Terenziani - Atmospheric microwave plasma torches for advanced cleaning
•Download as PPTX, PDF•
1 like•2,141 views
Atmospheric Microwave plasma torches for advanced cleaning (Giovanni Terenziani - 30') Speaker: Giovanni Terenziani - Legnaro National Laboratories - INFN | Duration: 30 min. Abstract During the last years of research in the plasma field, more and more importance has been focused on Atmospheric Plasma sources. One of the biggest and most important possible application is to use them like a ultra-cleaning device. In fact experiments on Uranium or Thorium contaminated samples have shown that an Atmospheric Plasma surface treatments can decrease significantly the amount of contaminant species without adding any unwanted contamination. These experiments have been taken during the creation of an ultra-cleaning protocol for the C.U.O.R.E. experiment. This kind of results can also open great possibilities in the field of superconductivity physics. In fact devices like Atmospheric Plasma torches could be used in the future to clean the inside surface of resonant cavities used in the particle accelerators. During my work at Legnaro National Laboratories in the National Institute of Nuclear Physics I’ve developed an Atmospheric Plasma Semi-Metallic Torch. The principal aim of this device was to lower the content of radioactive contaminant in some Copper samples. The experimental results were encouraging and the study in this field seems to be very fruitful. One of the possible improvement that we took into account was the possibility of increase the ionized species population by adding to the carrier gas different miscellaneous of various gases or liquid. In particular it’s been noticed, from the literature, the strong effect produced by the O+ and O++ particles. Because of this, we thought that adding water vapor in the gas carrier flux can provide good improvement in the O+ and O++ population. So we reach what we called “The Burning Water Configuration”. The main idea was to introduce a water vapor flux, produced by a vapor generator, directly into the plasma in order to “burn” the biggest quantity of the water possible. Problems with pressure and temperature of the vapor was solved. In fact the condensation of the water on the quartz tube walls, even in the plasma region, could decrease the quantity of “burned” vapor. Increasing then the working temperature and decreasing the flux we reached a minimum in the condensation regime and the plasma with vapor has been obtained. A new development of this plasma source, for treating cavities, can be the creation of a bended plasma. This can be obtained by using a particular angular tube placed by the end of the plasma torch. This, with the help of a turbulent flux regime, can guide the plasma through the bended tube without hitting walls, avoiding in this case the melting of the tubes. With the possibility to bend the plasma flame we can be able to reach the most difficult part of the inner cavities surface. This should ensure more flexibility of operation to the whole system referring also to any other application field.
Report
Share
Report
Share
![Outline Plasma Introduction ,[object Object],Our Configuration ,[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
Atmospheric Pressure Plasma source
Design and Construction of Atmospheric Pressure Air Plasma Source. Low power, economic and energy efficient atmospheric pressure air plasma source.
Electrostatic precipitator design
1) The document discusses using computational fluid dynamics (CFD) modeling to design electrostatic precipitators (ESPs) for industrial applications in a multidisciplinary approach.
2) The design procedure involves drafting a design based on specifications, simulating gas flow and particle capture, and modifying the design as needed to meet efficiency specifications.
3) The CFD modeling approach involves time-dependent simulation of gas flow, electric fields, particle charging and migration, collection, and reentrainment to optimize ESP performance.
Electrostatic Precipitators (ESP) Analysis Using CFD
The initial design of the ESP was studied with the help of commercial CFD tool “ANSYS Fluent” and after understanding its ineffectiveness, the design was modified by the addition of a filter. The insertion of filter at the inlet helped delay the flow separation at the inlet evase and improved the distribution of velocity in a more uniform pattern around all the electrode plates thus improving the efficiency of the ESP from 25 \% to 95 \%. Hence, CFD has proven as a very cost effective and useful tool in designing the Electrostatic precipitator.
For my blogs kindly refer: https://www.learncax.com/knowledge-base/blog/by-author/ganesh-visavale
CENPA_4
Isabelle Smith spent her summer of 2013 working as an hourly employee at the University of Washington Center for Experimental Nuclear Physics and Astrophysics (CENPA) in Seattle. Her roles included maintaining and assisting with the operation of CENPA's particle accelerator, filling liquid nitrogen dewars, and keeping lab areas clean. She also worked with other students on projects created by engineers and professors. To work with the accelerator, she had to complete radiation safety training. Her tasks involved assisting with the startup, operation, and maintenance of both the ion source and accelerator.
The study of electrical description for non thermal plasma needle system
The document summarizes a study on the electrical characterization of a non-thermal plasma needle system. Key points:
- Researchers designed and manufactured a non-thermal plasma needle to operate with argon gas at atmospheric pressure.
- The electrical description of the system was studied using voltages of 4.9 kV and 8 kV. Results showed the system consumed small amounts (few microamps) of electrical current. Current increased with higher gas flow.
- At 8 kV and 4 L/min gas flow, a slight breakdown voltage occurred causing a small decrease in current. Overall, the study characterized the electrical properties and current-voltage relationship of the non-thermal plasma needle system.
plasma arc reactor
1. The document describes a plasma arc reactor technology for producing nanopowders. It uses electric arc generators to create low-temperature plasma that allows evaporation and gas-phase chemical reactions of initial materials to produce nanodisperse solid powders.
2. A specific plasma-arc reactor is described that uses a two-jet plasmatron with immobile electrode spots. This allows the initial powder material to be directly fed into the arc discharge for more efficient processing. Testing demonstrated the efficient production of ultrafine silicon carbide powder.
3. Analysis of the produced powder found particles ranging from 5-20 nm in size consisting of crystalline SiC and SiO2 phases as well as amorphous materials. Processing
Electrostatic Precipitator
This presentation is made for understanding the working of ESP in power plant. and also what are equipment are used with technical data.
The Effect of RF Power on ion current and sheath current by electrical circui...
Plasma is very important in the development of technology as it is applied in many electronic devices
such as global positioning system (GPS). In addition, fusion and process of plasma requires important elements,
namely, the electron energy distribution. However, plasma glow is a relatively new research field in physics.
There has not been found any previous study on the electric plasma modeling. Thus, this study was aimed to
study plasma modeling especially to find out what was the difference in the number of density and the
temperature of the electron in the plasma glow before and after heated and to discover how was the distribution
of electron and ion in the plasma. This research was conducted at Brawijaya University, Malang, Indonesia in
the Faculty of Science. This exploration began in the middle of June 2013. The data collection and data analysis
were done during a year around until August 2014. In this research, characteristics of plasma were studied to
build model of plasma. It utilized MATLAB dialect program examination framework which result in the
distribution of temperature and current density. The findings show that there has been a large increase in the
number of U, U2 with power, while figures of U1 is stable until middle of curve and then decrease as u but u2
after increase at point then stable. The differences appearing are probably due to the simplifying assumptions
considered in the present model. There was a curve between current in sheath and plasma. And time and sheath
current increased in the beginning then decreased before they experienced another increase.
Recommended
Atmospheric Pressure Plasma source
Design and Construction of Atmospheric Pressure Air Plasma Source. Low power, economic and energy efficient atmospheric pressure air plasma source.
Electrostatic precipitator design
1) The document discusses using computational fluid dynamics (CFD) modeling to design electrostatic precipitators (ESPs) for industrial applications in a multidisciplinary approach.
2) The design procedure involves drafting a design based on specifications, simulating gas flow and particle capture, and modifying the design as needed to meet efficiency specifications.
3) The CFD modeling approach involves time-dependent simulation of gas flow, electric fields, particle charging and migration, collection, and reentrainment to optimize ESP performance.
Electrostatic Precipitators (ESP) Analysis Using CFD
The initial design of the ESP was studied with the help of commercial CFD tool “ANSYS Fluent” and after understanding its ineffectiveness, the design was modified by the addition of a filter. The insertion of filter at the inlet helped delay the flow separation at the inlet evase and improved the distribution of velocity in a more uniform pattern around all the electrode plates thus improving the efficiency of the ESP from 25 \% to 95 \%. Hence, CFD has proven as a very cost effective and useful tool in designing the Electrostatic precipitator.
For my blogs kindly refer: https://www.learncax.com/knowledge-base/blog/by-author/ganesh-visavale
CENPA_4
Isabelle Smith spent her summer of 2013 working as an hourly employee at the University of Washington Center for Experimental Nuclear Physics and Astrophysics (CENPA) in Seattle. Her roles included maintaining and assisting with the operation of CENPA's particle accelerator, filling liquid nitrogen dewars, and keeping lab areas clean. She also worked with other students on projects created by engineers and professors. To work with the accelerator, she had to complete radiation safety training. Her tasks involved assisting with the startup, operation, and maintenance of both the ion source and accelerator.
The study of electrical description for non thermal plasma needle system
The document summarizes a study on the electrical characterization of a non-thermal plasma needle system. Key points:
- Researchers designed and manufactured a non-thermal plasma needle to operate with argon gas at atmospheric pressure.
- The electrical description of the system was studied using voltages of 4.9 kV and 8 kV. Results showed the system consumed small amounts (few microamps) of electrical current. Current increased with higher gas flow.
- At 8 kV and 4 L/min gas flow, a slight breakdown voltage occurred causing a small decrease in current. Overall, the study characterized the electrical properties and current-voltage relationship of the non-thermal plasma needle system.
plasma arc reactor
1. The document describes a plasma arc reactor technology for producing nanopowders. It uses electric arc generators to create low-temperature plasma that allows evaporation and gas-phase chemical reactions of initial materials to produce nanodisperse solid powders.
2. A specific plasma-arc reactor is described that uses a two-jet plasmatron with immobile electrode spots. This allows the initial powder material to be directly fed into the arc discharge for more efficient processing. Testing demonstrated the efficient production of ultrafine silicon carbide powder.
3. Analysis of the produced powder found particles ranging from 5-20 nm in size consisting of crystalline SiC and SiO2 phases as well as amorphous materials. Processing
Electrostatic Precipitator
This presentation is made for understanding the working of ESP in power plant. and also what are equipment are used with technical data.
The Effect of RF Power on ion current and sheath current by electrical circui...
Plasma is very important in the development of technology as it is applied in many electronic devices
such as global positioning system (GPS). In addition, fusion and process of plasma requires important elements,
namely, the electron energy distribution. However, plasma glow is a relatively new research field in physics.
There has not been found any previous study on the electric plasma modeling. Thus, this study was aimed to
study plasma modeling especially to find out what was the difference in the number of density and the
temperature of the electron in the plasma glow before and after heated and to discover how was the distribution
of electron and ion in the plasma. This research was conducted at Brawijaya University, Malang, Indonesia in
the Faculty of Science. This exploration began in the middle of June 2013. The data collection and data analysis
were done during a year around until August 2014. In this research, characteristics of plasma were studied to
build model of plasma. It utilized MATLAB dialect program examination framework which result in the
distribution of temperature and current density. The findings show that there has been a large increase in the
number of U, U2 with power, while figures of U1 is stable until middle of curve and then decrease as u but u2
after increase at point then stable. The differences appearing are probably due to the simplifying assumptions
considered in the present model. There was a curve between current in sheath and plasma. And time and sheath
current increased in the beginning then decreased before they experienced another increase.
Lecture 1 (vacuum technology)
This document discusses experimental techniques for vacuum technology research. It begins by defining vacuum and describing how vacuum can be produced in the laboratory using a mercury test tube and glass container. It then discusses different types of vacuum pumps used to create vacuum, including rotary vane pumps and turbomolecular pumps. The document outlines various vacuum measurement techniques like mechanical gauges, thermal conductivity gauges, and ionization gauges and how they work in different pressure ranges from atmospheric pressure down to ultra-high vacuum. It concludes by thanking the reader for their time and inviting feedback to improve the presentation.
Investigating Ways to Prevent Electrical Arc Flash
This presentation was given by GSE at the Petroleum & Chemical Industry Council (PCIC). It discusses different tools and technologies available to prevent arc flash hazards. Experiments and results are discussed. For more information, go to www.gses.com. Thanks for viewing.
IAS Report Final
This document describes two experiments conducted on plasma systems under varying magnetic fields. The first experiment observes the hysteresis curve in a plasma as the vertical and toroidal magnetic fields are changed. Data on voltage variations is recorded and analyzed for skewness, kurtosis, and Hurst exponent, showing hysteresis. The second experiment investigates intensity variations of argon plasma across Langmuir probes under different magnetic field configurations using a bar magnet. Video data shows localized ionization intensity decreases as the magnet is moved further from the cathode. Graphs of intensity over time for each magnet position demonstrate this effect and the chaotic nature of the intensity fluctuations.
SRIM Calculations Applied to Ionization Chambers Tyler Bailey
1) SRIM simulations were used to model the interaction of alpha particles in different gases to determine the ideal gas for an ionization chamber. Argon gas was found to be optimal as it produced the largest voltage signal for a given alpha energy due to its high atomic number and low ionization potential.
2) The simulations calculated ion pairs produced and voltage pulses for various alpha energies in different gases. Argon had the highest ion pair production and voltage pulses, making it suitable for compact ionization chamber designs.
3) The voltage pulses could be used to determine the alpha energy interacting in the chamber, allowing identification of radioactive sources. However, more sophisticated processing is needed to account for other radiation types.
inductively coupled mass spectrometer
The document describes an inductively coupled plasma mass spectrometer (ICP-MS). ICP-MS works by ionizing a sample with inductively coupled plasma and then using a mass spectrometer to separate and quantify the ions. It can detect metals and some non-metals at very low concentrations. Compared to other techniques, ICP-MS has greater speed, precision, and sensitivity. However, it also introduces more interfering species than some other mass spectrometry methods. ICP-MS has a wide variety of applications including medical, environmental, forensic, and geochemical analysis.
inductively coupled plasma ICP techniques & applications
It is a multi-element analysis technique that will separate a sample into its constituent atoms and ions and excite it to a higher energy level.
Cause them to emit light with a distinct wavelength, which will be analyzed.
Icp ms
ICP-MS is an analytical technique that combines an inductively coupled plasma source with a mass spectrometer to detect elemental ions. The ICP source converts atoms in a sample to ions at very high temperatures, which are then separated and detected based on their mass-to-charge ratio in the mass spectrometer. ICP-MS provides excellent detection limits and precision for elemental analysis and can detect many elements simultaneously while also allowing for isotopic analysis. The technique requires high vacuum and specialized components to generate the plasma, transmit ions into the mass spectrometer, separate ions by mass, and detect them.
E S P
This document provides information about computer modeling of electrostatic precipitators (ESPs). It begins with an introduction to ESPs, describing how they work to separate particles from gas streams. It then discusses different ESP types (dry and wet), installation, charging mechanisms, particle mobility, resistivity factors, and software used to model and control air pollution using ESPs. The document also includes C programming code examples for modeling parallel plate and cylindrical ESP designs.
ICPES , analytical, P KMani, BCKV
Inductively Coupled Plasma Emission Spectroscopy, Advantages and Utility, Basic principles, Saha's Equation etc.
v2o5
This document summarizes a study on dehydrogenation of methylcyclohexane (MCH) over 3 wt% Pt/V2O5 and 3 wt% Pt/Y2O3 catalysts for hydrogen delivery applications. The catalytic activity was tested using a spray-pulse mode reactor, which creates alternating wet and dry conditions on the catalyst surface. 3 wt% Pt/Y2O3 achieved a hydrogen evolution rate of 958 mmol/g/min at 350°C and nearly 100% hydrogen selectivity. 3 wt% Pt/V2O5 achieved 98% MCH conversion at 60 minutes using the spray-pulse reactor. The catalysts were characterized using techniques such as XRD, CO-chemisorption
INTRODUCTION TO PLASMA ARC MACHINING
Detailed explanation of Plasma arc machining, equipment of plasma arc machining, working of plasma arc machining, construction of plasma arc machining , modes of plasma gun , appliaction of PAM, Advantages of PAM, Disadvantages of PAM and some Youtube Links of PAM
X-Series ICPMS User Guide
The document provides a user guide for operating an ICPMS (inductively coupled plasma mass spectrometer) located in Lab 236 at Texas A&M University-Kingsville. It details procedures for preparing solutions such as a 2-3% nitric acid solution and tune solutions, operating components like the liquid argon tank and chiller, basic operation and troubleshooting tips, and maintenance activities. The guide supplements the manufacturer's manual by addressing issues specific to the lab's setup and inventory. It emphasizes safety practices and checking simple issues first when troubleshooting problems.
VG-ICP-MS
VG-ICP-MS combines a vapour generator, inductively coupled plasma, and mass spectrometer to analyze samples. The vapour generator converts analytes like hydrides into gas that is then ionized by the inductively coupled plasma. These ions are then separated and detected by the quadrupole mass filter. VG-ICP-MS offers advantages like measuring all samples simultaneously, achieving higher sensitivity through 100% transport efficiency to the plasma, and removing potentially interfering sample matrix components. While it provides better sensitivity and separation of interferences, it requires hydride reagents and has limitations processing samples with high salt content.
Icpms
This document discusses inductively coupled plasma mass spectrometry (ICP-MS), an analytical technique used to determine elemental composition. Liquid samples are nebulized and ions are generated via plasma torch and introduced into the quadrupole mass filter. The quadrupole separates ions by mass/charge ratio to analyze over 40 elements in under a second. ICP-MS allows for multi-element analysis with very low detection limits compared to other techniques like atomic absorption spectroscopy. The document also discusses using ICP-MS to test for heavy metals in pharmaceutical samples as an alternative to the 100-year old USP method.
ICP-MS
The document discusses inductively coupled plasma mass spectrometry (ICP-MS), an analytical technique used for elemental determinations. [1] ICP-MS can detect elements at very low concentrations, analyze all elements simultaneously, and provide isotopic information. [2] It has various applications in pharmaceutical analysis including drug development, quality control, clinical trials, and detection of impurities. [3] Next generation ICP-MS instruments offer improved stability, flexibility, and performance for pharmaceutical applications.
Pvd final 17 etmm10 mahfooz
Physical vapor deposition (PVD) involves vaporizing a material source and condensing it as a thin film on a substrate. Thermal evaporation and sputtering are two common PVD methods. Thermal evaporation heats a source material to vaporize it, while sputtering uses a plasma to bombard a target material and eject atoms to deposit on the substrate. PVD requires vacuum conditions to allow vapor transport without collisions between vapor particles and gases. Common applications of PVD thin films include electronics, optics, tool coatings, and decorative coatings.
Dma ppt
This document discusses differential mobility analyzers (DMAs) which are used to size and classify aerosol particles. [1] It provides a brief history of electrical mobility studies dating back to the 1920s and outlines the key components and process of DMAs. [2] DMAs work by charging particles, separating them based on electrical mobility in a sheath air flow, and detecting particles at the outlet based on their size-dependent mobility. [3] DMAs come in nano and long versions and have various applications including measuring aerosol size distributions and producing mono-disperse particle samples for further analysis.
Inductively coupled plasma mass spectrometry
ICP-MS has been widely used for elemental analysis in various fields such as environmental, clinical, and geological applications. It functions by inductively coupling plasma to generate ions from a sample, which are then sorted by mass and detected. Key advantages include excellent detection limits in the parts per trillion range, ability to detect multiple elements simultaneously, and capacity for isotopic analysis. The instrument features a sample introduction system that turns the sample into an aerosol, an ionization region where the plasma converts atoms into ions, ion extraction interfaces that transport ions into the mass spectrometer, and ion optics that focus the ion beam.
Atomic absorption spectroscopy
Atomic absorption spectroscopy is a technique that uses the absorption of light to detect metal and metalloid elements in samples. It works by converting the sample into gaseous atoms using a flame or electrothermal atomizer and measuring the absorption of light at specific wavelengths, which is proportional to the concentration of the element. The main components of an atomic absorption spectroscopy instrument are a hollow cathode lamp, nebulizer, atomizer, monochromator, and detector. It is a reliable and simple method that can analyze over 62 elements and determine metal concentrations in samples.
Rad.det.munich 07252011
this talk reviews radiation detection physics with emphasis on high resolution gamma ray detectors using semiconducors
Atomic Absorption Spectrophotometer (AAS) by ACMAS Technologies Pvt Ltd.
Atomic Absorption Spectrophotometer (AAS) by ACMAS Technologies Pvt Ltd.Acmas Technologies Pvt. Ltd.
Atomic Absorption Spectrophotometer is for determining the concentration of a particular metal(element) in a sample. Atomic Absorption Spectrophotometer can be used to analyze the concentration of over 62 different metals. For More Information Please Logon http://goo.gl/1dTEGlPlasma tech 3 types
This document provides an overview of plasma processing and discusses opportunities in the field. It outlines the key topics covered, including why plasma processing is studied, diagnostic tools used to analyze processes, common plasma processes like etching and deposition, different types of plasma discharges, and opportunities in plasma science. The document emphasizes that plasma processing requires an understanding of plasma physics, chemistry, and engineering and that opportunities exist in both academic research and industry to further develop knowledge and applications of plasma technology.
More Related Content
What's hot
Lecture 1 (vacuum technology)
This document discusses experimental techniques for vacuum technology research. It begins by defining vacuum and describing how vacuum can be produced in the laboratory using a mercury test tube and glass container. It then discusses different types of vacuum pumps used to create vacuum, including rotary vane pumps and turbomolecular pumps. The document outlines various vacuum measurement techniques like mechanical gauges, thermal conductivity gauges, and ionization gauges and how they work in different pressure ranges from atmospheric pressure down to ultra-high vacuum. It concludes by thanking the reader for their time and inviting feedback to improve the presentation.
Investigating Ways to Prevent Electrical Arc Flash
This presentation was given by GSE at the Petroleum & Chemical Industry Council (PCIC). It discusses different tools and technologies available to prevent arc flash hazards. Experiments and results are discussed. For more information, go to www.gses.com. Thanks for viewing.
IAS Report Final
This document describes two experiments conducted on plasma systems under varying magnetic fields. The first experiment observes the hysteresis curve in a plasma as the vertical and toroidal magnetic fields are changed. Data on voltage variations is recorded and analyzed for skewness, kurtosis, and Hurst exponent, showing hysteresis. The second experiment investigates intensity variations of argon plasma across Langmuir probes under different magnetic field configurations using a bar magnet. Video data shows localized ionization intensity decreases as the magnet is moved further from the cathode. Graphs of intensity over time for each magnet position demonstrate this effect and the chaotic nature of the intensity fluctuations.
SRIM Calculations Applied to Ionization Chambers Tyler Bailey
1) SRIM simulations were used to model the interaction of alpha particles in different gases to determine the ideal gas for an ionization chamber. Argon gas was found to be optimal as it produced the largest voltage signal for a given alpha energy due to its high atomic number and low ionization potential.
2) The simulations calculated ion pairs produced and voltage pulses for various alpha energies in different gases. Argon had the highest ion pair production and voltage pulses, making it suitable for compact ionization chamber designs.
3) The voltage pulses could be used to determine the alpha energy interacting in the chamber, allowing identification of radioactive sources. However, more sophisticated processing is needed to account for other radiation types.
inductively coupled mass spectrometer
The document describes an inductively coupled plasma mass spectrometer (ICP-MS). ICP-MS works by ionizing a sample with inductively coupled plasma and then using a mass spectrometer to separate and quantify the ions. It can detect metals and some non-metals at very low concentrations. Compared to other techniques, ICP-MS has greater speed, precision, and sensitivity. However, it also introduces more interfering species than some other mass spectrometry methods. ICP-MS has a wide variety of applications including medical, environmental, forensic, and geochemical analysis.
inductively coupled plasma ICP techniques & applications
It is a multi-element analysis technique that will separate a sample into its constituent atoms and ions and excite it to a higher energy level.
Cause them to emit light with a distinct wavelength, which will be analyzed.
Icp ms
ICP-MS is an analytical technique that combines an inductively coupled plasma source with a mass spectrometer to detect elemental ions. The ICP source converts atoms in a sample to ions at very high temperatures, which are then separated and detected based on their mass-to-charge ratio in the mass spectrometer. ICP-MS provides excellent detection limits and precision for elemental analysis and can detect many elements simultaneously while also allowing for isotopic analysis. The technique requires high vacuum and specialized components to generate the plasma, transmit ions into the mass spectrometer, separate ions by mass, and detect them.
E S P
This document provides information about computer modeling of electrostatic precipitators (ESPs). It begins with an introduction to ESPs, describing how they work to separate particles from gas streams. It then discusses different ESP types (dry and wet), installation, charging mechanisms, particle mobility, resistivity factors, and software used to model and control air pollution using ESPs. The document also includes C programming code examples for modeling parallel plate and cylindrical ESP designs.
ICPES , analytical, P KMani, BCKV
Inductively Coupled Plasma Emission Spectroscopy, Advantages and Utility, Basic principles, Saha's Equation etc.
v2o5
This document summarizes a study on dehydrogenation of methylcyclohexane (MCH) over 3 wt% Pt/V2O5 and 3 wt% Pt/Y2O3 catalysts for hydrogen delivery applications. The catalytic activity was tested using a spray-pulse mode reactor, which creates alternating wet and dry conditions on the catalyst surface. 3 wt% Pt/Y2O3 achieved a hydrogen evolution rate of 958 mmol/g/min at 350°C and nearly 100% hydrogen selectivity. 3 wt% Pt/V2O5 achieved 98% MCH conversion at 60 minutes using the spray-pulse reactor. The catalysts were characterized using techniques such as XRD, CO-chemisorption
INTRODUCTION TO PLASMA ARC MACHINING
Detailed explanation of Plasma arc machining, equipment of plasma arc machining, working of plasma arc machining, construction of plasma arc machining , modes of plasma gun , appliaction of PAM, Advantages of PAM, Disadvantages of PAM and some Youtube Links of PAM
X-Series ICPMS User Guide
The document provides a user guide for operating an ICPMS (inductively coupled plasma mass spectrometer) located in Lab 236 at Texas A&M University-Kingsville. It details procedures for preparing solutions such as a 2-3% nitric acid solution and tune solutions, operating components like the liquid argon tank and chiller, basic operation and troubleshooting tips, and maintenance activities. The guide supplements the manufacturer's manual by addressing issues specific to the lab's setup and inventory. It emphasizes safety practices and checking simple issues first when troubleshooting problems.
VG-ICP-MS
VG-ICP-MS combines a vapour generator, inductively coupled plasma, and mass spectrometer to analyze samples. The vapour generator converts analytes like hydrides into gas that is then ionized by the inductively coupled plasma. These ions are then separated and detected by the quadrupole mass filter. VG-ICP-MS offers advantages like measuring all samples simultaneously, achieving higher sensitivity through 100% transport efficiency to the plasma, and removing potentially interfering sample matrix components. While it provides better sensitivity and separation of interferences, it requires hydride reagents and has limitations processing samples with high salt content.
Icpms
This document discusses inductively coupled plasma mass spectrometry (ICP-MS), an analytical technique used to determine elemental composition. Liquid samples are nebulized and ions are generated via plasma torch and introduced into the quadrupole mass filter. The quadrupole separates ions by mass/charge ratio to analyze over 40 elements in under a second. ICP-MS allows for multi-element analysis with very low detection limits compared to other techniques like atomic absorption spectroscopy. The document also discusses using ICP-MS to test for heavy metals in pharmaceutical samples as an alternative to the 100-year old USP method.
ICP-MS
The document discusses inductively coupled plasma mass spectrometry (ICP-MS), an analytical technique used for elemental determinations. [1] ICP-MS can detect elements at very low concentrations, analyze all elements simultaneously, and provide isotopic information. [2] It has various applications in pharmaceutical analysis including drug development, quality control, clinical trials, and detection of impurities. [3] Next generation ICP-MS instruments offer improved stability, flexibility, and performance for pharmaceutical applications.
Pvd final 17 etmm10 mahfooz
Physical vapor deposition (PVD) involves vaporizing a material source and condensing it as a thin film on a substrate. Thermal evaporation and sputtering are two common PVD methods. Thermal evaporation heats a source material to vaporize it, while sputtering uses a plasma to bombard a target material and eject atoms to deposit on the substrate. PVD requires vacuum conditions to allow vapor transport without collisions between vapor particles and gases. Common applications of PVD thin films include electronics, optics, tool coatings, and decorative coatings.
Dma ppt
This document discusses differential mobility analyzers (DMAs) which are used to size and classify aerosol particles. [1] It provides a brief history of electrical mobility studies dating back to the 1920s and outlines the key components and process of DMAs. [2] DMAs work by charging particles, separating them based on electrical mobility in a sheath air flow, and detecting particles at the outlet based on their size-dependent mobility. [3] DMAs come in nano and long versions and have various applications including measuring aerosol size distributions and producing mono-disperse particle samples for further analysis.
Inductively coupled plasma mass spectrometry
ICP-MS has been widely used for elemental analysis in various fields such as environmental, clinical, and geological applications. It functions by inductively coupling plasma to generate ions from a sample, which are then sorted by mass and detected. Key advantages include excellent detection limits in the parts per trillion range, ability to detect multiple elements simultaneously, and capacity for isotopic analysis. The instrument features a sample introduction system that turns the sample into an aerosol, an ionization region where the plasma converts atoms into ions, ion extraction interfaces that transport ions into the mass spectrometer, and ion optics that focus the ion beam.
Atomic absorption spectroscopy
Atomic absorption spectroscopy is a technique that uses the absorption of light to detect metal and metalloid elements in samples. It works by converting the sample into gaseous atoms using a flame or electrothermal atomizer and measuring the absorption of light at specific wavelengths, which is proportional to the concentration of the element. The main components of an atomic absorption spectroscopy instrument are a hollow cathode lamp, nebulizer, atomizer, monochromator, and detector. It is a reliable and simple method that can analyze over 62 elements and determine metal concentrations in samples.
Rad.det.munich 07252011
this talk reviews radiation detection physics with emphasis on high resolution gamma ray detectors using semiconducors
What's hot (20)
Investigating Ways to Prevent Electrical Arc Flash
Investigating Ways to Prevent Electrical Arc Flash
SRIM Calculations Applied to Ionization Chambers Tyler Bailey
SRIM Calculations Applied to Ionization Chambers Tyler Bailey
inductively coupled plasma ICP techniques & applications
inductively coupled plasma ICP techniques & applications
Similar to Terenziani - Atmospheric microwave plasma torches for advanced cleaning
Atomic Absorption Spectrophotometer (AAS) by ACMAS Technologies Pvt Ltd.
Atomic Absorption Spectrophotometer (AAS) by ACMAS Technologies Pvt Ltd.Acmas Technologies Pvt. Ltd.
Atomic Absorption Spectrophotometer is for determining the concentration of a particular metal(element) in a sample. Atomic Absorption Spectrophotometer can be used to analyze the concentration of over 62 different metals. For More Information Please Logon http://goo.gl/1dTEGlPlasma tech 3 types
This document provides an overview of plasma processing and discusses opportunities in the field. It outlines the key topics covered, including why plasma processing is studied, diagnostic tools used to analyze processes, common plasma processes like etching and deposition, different types of plasma discharges, and opportunities in plasma science. The document emphasizes that plasma processing requires an understanding of plasma physics, chemistry, and engineering and that opportunities exist in both academic research and industry to further develop knowledge and applications of plasma technology.
Plasma tech 3 types
This document provides an overview of plasma processing by Matthew J. Plasma. It discusses why plasma processing is studied, diagnostic tools used to analyze processes, examples of plasma processes like etching and deposition, different types of plasma discharges, and opportunities in the field. The document outlines the complex interactions between plasma physics, gas phase chemistry, and surface chemistry that must be understood to optimize plasma-based manufacturing techniques.
LSS - Defense - 12-1-2014
The document summarizes a presentation on augmenting the velocity of supersonic molecular beams using a rotating source. Key points:
- A rotating nozzle source can increase the lab frame velocity of supersonic molecular beams, producing slower, colder beams for applications like precision spectroscopy and studies of cold molecular chemistry.
- Experimental results show the rotating source effectively shifts beam time-of-flight spectra and enhances beam density through centrifugal forces. Beam properties depend on parameters like gas type, source pressure and rotation speed.
- Improvements to the rotating source design aim to allow slowing of lighter molecules and higher operational frequencies. Future work may include secondary detection methods and dynamic rotor balancing for greater stability.
Vacuum Arc Deposition in interior cavities (Yan Valsky), Lecture Prof. R..LBo...
Vacuum Arc Deposition in interior cavities (Yan Valsky), Lecture Prof. R..LBo...Yan Valsky, MSc, MBA
This document discusses vacuum arc deposition (VAD), a physical vapor deposition technique used to apply hard coatings. It reviews the physics behind VAD, including cathode spot formation and plasma jet characteristics. Engineering considerations for VAD like arc ignition, heat removal and macroparticle control are also covered. Finally, it suggests approaches for using VAD to coat interior cavities, such as using the cavity as a vacuum chamber or miniature filtration systems, but notes the technical challenges involved.4.2.cappelli 06(3)
This document summarizes research into using laser excitation of cesium ions to enhance the performance of thermionic energy converters (TECs). The researchers have developed a particle-in-cell model of a planar diode discharge to simulate TEC operation and are using it to model the effects of laser excitation on current-voltage characteristics. They have also designed a laboratory test cell to experimentally validate the effects of laser excitation on TEC performance. Initial results suggest laser excitation could substantially improve TEC current density and efficiency over conventional ignited or triode configurations.
4.2.cappelli 06(2)
This document summarizes research into using laser excitation to enhance the production of cesium ions in thermionic energy converters (TECs). The researchers have developed a particle-in-cell model of a planar diode discharge to simulate TEC performance with and without laser ionization. They have also designed a laboratory test cell to experimentally validate the effect of laser excitation on TEC current-voltage characteristics. Future work will include refining the models, procuring parts for the test cell, and conducting experimental studies to analyze how laser excitation can increase TEC efficiency and be used in energy systems to reduce carbon emissions.
4.2.cappelli 06
This document summarizes research into using laser excitation to enhance the production of cesium ions in thermionic energy converters (TECs). The researchers have developed a particle-in-cell model of a planar diode discharge to simulate TEC performance with and without laser ionization. They have also designed a laboratory test cell to experimentally validate the effect of laser excitation on TEC current-voltage characteristics. Future work will include refining the models, procuring parts for the test cell, and conducting experimental studies to characterize optimized TEC performance with optical modulation. The goal is to increase TEC efficiency for applications in solar and combustion energy systems to reduce greenhouse gas emissions.
4.2.cappelli 06(1)
This document summarizes research into using laser excitation of cesium ions to enhance the performance of thermionic energy converters (TECs). The researchers have developed a particle-in-cell model of a planar diode discharge to simulate TEC operation and are using it to model the effects of laser excitation on current-voltage characteristics. They have also designed a laboratory test cell to experimentally validate the effects of laser excitation on TEC performance. Initial results suggest laser excitation could substantially improve TEC current density and efficiency over conventional ignited or triode configurations.
Performance analysis of a monopole antenna with fluorescent tubes at 4.9 g hz...
This document describes the analysis of a monopole antenna design with fluorescent tubes at an operating frequency of 4.9 GHz. The antenna structure consists of 12 commercial fluorescent tubes surrounding a monopole antenna located in the center of a circular ground plane. The performance of the antenna design is analyzed using CST Microwave Studio software. Parameters like return loss, radiation pattern, and gain are evaluated to analyze the antenna's performance. The fluorescent tubes act as plasma reflectors when electrified, trapping radiation inside and improving the antenna's performance for potential military applications.
Vacuum Science and Technology for Thin Film Device Processing
Delivered by Dr. Alastair Buckley, University of Sheffield as part of CDT-PV core level training, Jan 2016
GC MASS SPECTROMETERY
Gas chromatography–mass spectrometry (GC-MS) is an analytical method that combines the features of gas-chromatography and mass spectrometry to identify different substances within a test sample.[1] Applications of GC-MS include drug detection, fire investigation, environmental analysis, explosives investigation, food and flavor analysis, and identification of unknown samples, including that of material samples obtained from planet Mars during probe missions as early as the 1970s. GC-MS can also be used in airport security to detect substances in luggage or on human beings. Additionally, it can identify trace elements in materials that were previously thought to have disintegrated beyond identification. Like liquid chromatography–mass spectrometry, it allows analysis and detection even of tiny amounts of a substance.[2]
GC-MS has been regarded as a "gold standard" for forensic substance identification because it is used to perform a 100% specific test, which positively identifies the presence of a particular substance. A nonspecific test merely indicates that any of several in a category of substances is present. Although a nonspecific test could statistically suggest the identity of the substance, this could lead to false positive identification. However, the high temperatures (300°C) used in the GC-MS injection port (and oven) can result in thermal degradation of injected molecules,[3] thus resulting in the measurement of degradation products instead of the actual molecule(s) of interest.The first on-line coupling of gas chromatography to a mass spectrometer was reported in the late 1950s.[4][5] An interest in coupling the methods had been suggested as early as December 1954.
FRS-G Ceiling FY-QA1000D Air purifier Brochure
The document provides information on several air purification products from FRS-G including the FY-QA1000D air disinfection machine. Key details include:
1) The FY-QA1000D uses corona ring plasma (CRP) and graphene electrostatic dust removal (G-ESP) technology combined with triple-stage filters to disinfect and purify air in medium rooms.
2) It has a 5-speed fan, covers areas of 18.6-104.2 m2, treats air volumes of 45-250 m3/hour, and has a maximum power consumption of 90W.
3) Filters include a washable CRP module, G-ESP dust removal module
Tantawi - Measurements of RF properties of Novel Superconducting Materials
http://www.surfacetreatments.it/thinfilms
Measurements of RF properties of Novel Superconducting Materials (Sami Tantawi - 20')
Speaker: Sami Tantawi - SLAC National Accelerator Laboratory | Duration: 20 min.
Abstract
We have developed an X-band SRF testing system using a high-Q copper cavity with an interchangeable flat bottom for the testing of different materials. By measuring the Q of the cavity, the system is capable to characterize the quenching magnetic field of the superconducting samples at different power level and temperature, as well as the surface resistivity. This paper will present the most recent development of the system and testing results.
Atomic Fluorescence Spectroscopy (AFS)
Atomic fluorescence spectroscopy uses the same apparatus as atomic absorption spectroscopy but measures the emitted radiation from excited atomic species rather than absorbed radiation. It can determine the concentration of elements present using either line sources like lasers or hollow cathode lamps, or continuous sources like xenon arc lamps. Interferences can occur from chemical reactions interfering with atomization, ionization of analytes, overlapping spectra from other elements or molecules, and background emission or scattering. These issues can be addressed through techniques like chemical separation, modulation of the detector, and background correction methods.
Carbon nano materials
Carbon nanotubes have unique electrical, mechanical, and thermal properties that make them promising for a variety of applications. They have very high tensile strength and thermal conductivity. Their properties depend on their geometry, with single-walled nanotubes being metallic or semiconducting depending on their structure. Common synthesis methods include arc discharge, laser ablation, and chemical vapor deposition. Raman spectroscopy is useful for characterizing carbon nanotubes and can determine their diameter and identify defects. Potential applications of carbon nanotubes include use in electronics, gas sensors, field emission displays, and energy storage.
Plasma 4th types of matter.ppt
This document provides an overview of plasma processing from Matthew Goeckner of Plasma Laboratories. It discusses 1) why plasma processing is studied, 2) diagnostic tools used, 3) examples of plasma processes, 4) types of plasma discharges, and 5) opportunities in the field. Plasma processing is a complex interaction between plasma physics, gas phase chemistry, and surface chemistry that is important across many industries. Understanding these interactions enables improving processes and finished products.
Xray Production
The document discusses the key components of an X-ray production system, including the cathode, anode, generator, and tube rating charts. The cathode emits electrons via a heated filament towards the anode. X-rays are produced when electrons collide with the anode. Generators supply power to heat the cathode and accelerate electrons. Tube rating charts indicate safe operating limits based on heat loading to prevent damage. Automatic exposure control uses radiation detectors to optimize exposure time based on patient thickness.
FRS-G Wall-mounted FY-BA800D Air purifier Brochure
1. FRS-G plasma air sterilizer uses atmospheric plasma discharge to rapidly destroy airborne pathogens like viruses, bacteria, and fungi.
2. Plasma contains ions and active groups that can chemically react with microbes, disturbing their survival functions and causing rapid death.
3. Test results showed the plasma generator produced high density corona discharge plasma with densities of 5.34X1017-2.62X1018 m-3.
Plasma Cleaning of SEMs and Large Vacuum Systems_EK Review_101115
Plasma cleaning uses reactive radicals generated by plasma to chemically etch away hydrocarbon contamination on surfaces through free radical reactions. Optimal plasma cleaning occurs at lower pressures (10-50 mTorr) where radicals have longer mean free paths and cleaner surfaces further from the plasma source. Capacitive plasma sources are more efficient at lower pressures than inductively coupled sources as they generate electrons with higher energies above absorption thresholds. Downstream remote plasma cleaning avoids surface damage and increases cleaning rates and distances through UV desorption in the afterglow.
Similar to Terenziani - Atmospheric microwave plasma torches for advanced cleaning (20)
Atomic Absorption Spectrophotometer (AAS) by ACMAS Technologies Pvt Ltd.
Atomic Absorption Spectrophotometer (AAS) by ACMAS Technologies Pvt Ltd.
Vacuum Arc Deposition in interior cavities (Yan Valsky), Lecture Prof. R..LBo...
Vacuum Arc Deposition in interior cavities (Yan Valsky), Lecture Prof. R..LBo...
Performance analysis of a monopole antenna with fluorescent tubes at 4.9 g hz...
Performance analysis of a monopole antenna with fluorescent tubes at 4.9 g hz...
Vacuum Science and Technology for Thin Film Device Processing
Vacuum Science and Technology for Thin Film Device Processing
Tantawi - Measurements of RF properties of Novel Superconducting Materials
Tantawi - Measurements of RF properties of Novel Superconducting Materials
FRS-G Wall-mounted FY-BA800D Air purifier Brochure
FRS-G Wall-mounted FY-BA800D Air purifier Brochure
Plasma Cleaning of SEMs and Large Vacuum Systems_EK Review_101115
Plasma Cleaning of SEMs and Large Vacuum Systems_EK Review_101115
More from thinfilmsworkshop
V. Palmieri - Superconducting resonant cavities
There is no dubt that the subject of superconducting resonant cavities is a fascinating field both physical and engineering point of view.
The application of superconductivity to the world of resonant cavities has made achievable results unimaginable otherwise.
Independently of the special field of application, superconducting resonant circuits have superior performances compared to roo-temperatire circuits.
However the greatest resource of such devices stays not in the high quality of the results already obtained, but in all potential applications and new ideas that must be still developed.
V. Palmieri - The classical superconductivity
When hearing about persistent currents recirculating for several year in a superconducting loop without any appreciable decay, we realize that we are dealing with a phenomenon wich in nature is the closest we know to the perpetual motion.
The zero resistivity and the perfect diamagnetism in Mercury at 4.2 K, the discovery of superconducting materials, finally the revolution of the "liquid Nitrogen superconductivity": Nature discloses drop by drop its intimate secrets.
Nobody can exclude that the final surpreise must still come.
3 ej fccrf legnaro 2014-10-06
The document discusses plans to form an international collaboration to study future circular colliders at CERN, including a 100 TeV proton-proton collider (FCC-hh), a lepton collider (FCC-ee), and a lepton-hadron collider (FCC-he). It outlines initial parameters and opportunities for the superconducting radio frequency (RF) systems, which will need to provide up to 100 MW of continuous wave power to accelerate beams. Key areas of study for the large-scale FCC RF systems include cavity and cryomodule technology, reliability, efficiency, and operational aspects.
Tesi Master Andrea Camacho Romero
This works deals with the A15 compound synthesis on niobium samples and over the
internal surface of niobium cavities by means of induction heating. Specifically, three compounds were studied: Nb3Ga, Nb3Al and Nb-Al-Ga. As for the preparation of the niobium samples, they were treated with BCP solution in order to polish the surface. The niobium cavities were treated with centrifugal tumbling, BCP solution and high pressure water rising. Subsequent, the samples, or cavities, were placed into an inductor controlling the voltage, time, sample position, temperature, type and pressure of gas used. The highest critical temperature
obtained was 18 K and Tc 0,35 K, in Nb-Al-Ga#1 sample by inductive measurement.
Mapping analysis showed the uniform diffusion of aluminum into the niobium, and the gallium diffuses creating channels into niobium. The composition was measured by EDS obtaining (82±1)% wt. Niobium, (11,3±0,9)% wt. Gallium, (4,7±0,2)% wt. Aluminum and (1,9±0,1)% wt. Oxygen. Finally, RF test confirmed that the cavities obtained after the annealing were normal conductive indicating that the preparation parameters must still be optimized.
Tesi Bachelor Debastiani
In questi ultimi anni i problemi energetici e ambientali hanno favorito lo sviluppo di un nuovo settore della ricerca riguardo la produzione di energia pulita sfruttando fenomeni naturali. L'attenzione dei ricercatori è stata catturata dalla possibilità di convertire l'energia solare luminosa
in energia elettrica. Questo processo di conversione, nato nella prima metà del XX secolo, permette di produrre correnti elettriche anche in piccola scala, senza la realizzazione di imponenti impianti industriali e soprattutto senza la produzione si scorie inquinanti. Sono nate così le prime celle solari
a effetto fotovoltaico.
Gli sviluppi hanno portato a diversi risultati e al giorno d'oggi l'energia fotovoltaica ha ormai fatto il suo ingresso nella vita quotidiana. Sia i favori delle industrie, sia l'interesse dei privati cittadini, contribuiscono a espandere questo tipo di ricerca, ottenendo numerosi successi nell'aumento
dell'efficienza di conversione energetica. Dal punto di vista della scienza dei materiali la prima cosa che viene in mente pensando alle celle
fotovoltaiche è il silicio. A tutti gli effetti la maggior parte delle celle sul commercio sono costituite da silicio policristallino, per le sue ottime qualità e proprietà di resa. Tuttavia esistono anche una moltitudine di altri composti, alcuni più recenti di altri, che sono ancora nell'occhio dei ricercatori, un esempio ne sono i recenti foto-materiali organici. Spesso però i costi di realizzazione sono alti per ottenere rese elevate, rendendo così proibitive le realizzazioni su impianti industriali. L'ossido rameoso (Cu2O) è stato uno dei capostipiti dei materiali utilizzati nelle celle fotovoltaiche.
Fin dal suo primo utilizzo nel 1958 esso ha presentato le caratteristiche di semiconduttore necessarie alla realizzazione di impianti fotovoltaici. Rispetto ai sui cugini più nobili, presenta delle efficienze minori, ma anche un costo decisamente più basso. Il rame infatti, da innumerevoli anni, è un elemento largamente sfruttato in tutti i campi dell'elettronica e non solo, e la realizzazione di ossidi specifici non comporta processi troppo complessi o costosi.
La ricerca nel campo dell'ossido rameoso è riuscita a migliorare le sue qualità all'interno del mondo fotovoltaico rendendo possibile la realizzazione di celle solari a costi contenuti.
Per questo motivo il Cu2O è tutt'oggi un materiale in grado di competere nel moderno panorama della ricerca solare fotovoltaica.
Tesi Bachelor Giovanni Vergari
Il plasma è un supporto particolarmente attivo dal punto di vista chimico e fisico. In base al modo con cui viene attivato e alla potenza di lavoro, può generare temperature basse o molto elevate e viene definito rispettivamente come plasma freddo o caldo. Quest’ampio range di temperature lo rende adatto a numerose applicazioni tecnologiche: rivestimento di superficie, smaltimento rifiuti, trattamento dei gas, sintesi chimiche, lavorazioni industriali. La maggior parte di queste applicazioni del plasma non sono ancora state industrializzate, sebbene il loro sfruttamento rispetti strettamente le norme sull’inquinamento.
I plasmi caldi (specialmente quelli ad arco) sono ampiamente industrializzati, con particolare diffusione all’interno del settore aereonautico. La tecnologia dei plasmi freddi è stata sviluppata in microelettronica, ma le apparecchiature da vuoto richieste ne limitano l’applicabilità.
Al fine di evitare l’inconveniente associato al vuoto, molti laboratori hanno provato a trasferire a pressione atmosferica processi che attualmente lavorano in vuoto. Le ricerche condotte hanno portato alla scoperta di varie ed innovative sorgenti che verranno descritte in questo elaborato.
Dopo un riassunto sui differenti tipi di plasmi, saranno descritte le varie sorgenti in termini di design, condizioni di lavoro e proprietà del plasma. In seguito l’attenzione sarà spostata sulle varie applicazioni (analisi spettroscopica, trattamento dei gas e processi sui materiali).
Tesi master Ram Khrishna Thakur
The lowest possible surface resistivity and higher accelerating field are the paramount
considerations, hence are obligatory for accelerating cavities. Since, superconducting materials
are used to make radio-frequency cavities for future accelerators. In the case of rf cavities,
superconductors are being used in order to minimize the power dissipated and increase the
figures of merit of a radio-frequency cavity, such as the quality factor and accelerating gradient.
Hence, these could be achieved by improving surface treatment to the cavity, and processing
techniques must be analyzed in order to optimize these figures of merit.
The research work reported in this dissertation mainly carried out on tesla type seamless 6GHz
Nb and Cu cavities. We have developed two innovative techniques: firstly, for mechanical
polishing of cavities, and secondly for purification of these cavities at atmospheric pressure under
cover of 4Helium gas (for protection) and at ultra-high vacuum (UHV) system. These cavities are
fabricated by spinning technology to create seamless cavities.
The main advantages of 6 GHz bulk-Nb cavities are saving cost, materials and time to collect
statistics of surface treatments and RF test in a very short time scale. Cavities are RF tested
before and after high temperature treatment under atmospheric pressure (under cover of inert gas
atmosphere to protect inner and outer surface of cavity) inside transparent quartz tube, and under
UHV conditions. Induction heating method is used to anneal the cavity at temperatures higher
than 2000°C and close to the melting point of Nb for less than a minute while few seconds at
maximum temperature. Before RF test and UHV annealing, the surface treatment processes like
tumbling, chemical, electro-chemical (such as BCP and EP), ultrasonic cleaning and high
pressure rinsing (HPR) have been employed. High temperature treatment for few minutes at
atmospheric pressure allow to reduce hydrogen, oxygen and other elemental impurities, which
effects on cavity Q-factor degradation, hence recovers rf performances of these cavities. This
research work will address these problems and illustrate the importance of surface treatments.
Tesi master Goulong yu
6 GHz spun seamless Superconducting Radio Frequency (SRF) cavities are a very
useful tool for testing alternative surface treatments in the fabrication of TESLA cavity.
However, the spinning technique has also some drawbacks like contamination, surface
damage in internal part due to the collapsible mandrel line. The first important step of
the surface treatments is the mechanical polishing. For this purpose, a new, cheap, easy
and highly efficient tumbling approach based on vibration was developed.
Before this approach was conceived, a few other methods, such as Turbula,
Centrifugal Barrel Polishing (CBP), custom Zigzag tumbler and “flower brush” have
been studied and tested. But the result was not so satisfactory neither for the low erosion
rate nor for the unstableness of the system nor for the complicated polishing process. At
last, a vibration system with a simple structure, working stably was created after two
experiments.
Another important task of the thesis is to update the optical inspection system for 6
GHz cavities. 3 stepper motors motor was added to move and rotate the cavity and
realized auto focus of the miniature camera. A software was developed to achieve a full
cavity photographed by one key operation using LabVIEW.
A high-efficiency mechanical polishing system is generally judged by two aspects:
one is whether the surface property satisfies the demand after polishing; the other is
whether the erosion rate can reach and be stabilized at a high value which is comparable
or greater than the existing products. The Radio Frequency (RF) test result indicates that
the vibration system is feasible. The latest erosion rate 1 gram/hour i.e. removing 13
microns depth of inner surface materials per hour exceeds the performance of CBP,
which is widely used in other laboratories in the world.
The mechanical polishing process is elaborated and cavities that have been polished
are listed. Several influencing factors on the erosion rate, such as tumbling time, media,
signal and multi-cavities and plate direction are discussed at the end.
A preliminary design of 1.3 GHz vibration system as the future development is
provided for the next plan.
Tesi magistrale Akaberi Nazkhatoon
In questo lavoro di tesi verrà presentato un primo prototipo di un mini inceneritore al plasma per la pirolisi dei rifiuti medicali basato sulla tecnologia delle torce al plasma a microonde (MW) con tecnologia domestica a basso costo.
Si inizia con una breve e generale descrizione sulle problematiche dei rifiuti, della loro classificazione e delle norme che ne regolano lo smaltimento. Quindi si parlerà delle norme necessarie per l‟identificazione dei rifiuti medicali ed infine verrà riassunta la modalità di gestione dei rifiuti secondo la normativa in vigore.
Successivamente saranno descritti alcuni metodi di termodistruzione dei rifiuti ospedalieri come la combustione negli inceneritori tradizionali, e alcuni metodi alternativi, come il trattamento al plasma atmosferico, andando ad analizzare vantaggi e svantaggi di ogni tecnologia.
L‟attenzione sarà quindi focalizzata sul plasma atmosferico e sulla descrizione delle sue proprietà. Quindi saranno descritti diversi tipi di plasma atmosferico in base alle condizioni operative di alimentazione e delle loro strutture concentrando le nostre attenzioni verso le torce al plasma atmosferico basate sulle microonde.
Quindi si descriverà la realizzazione di una torcia al plasma atmosferico utilizzando i componenti a basso costo dei normali forni a microonde e con l‟obbiettivo di utilizzare questa torcia sia nel settore industriale che nella ricerca.
Tale torcia, realizzata con componenti commerciali domestici a basso costo, costituirà il cuore del prototipo di mini inceneritore che è stato progettato, realizzato, descritto e testato in laboratorio. Verrà quindi illustrata l‟efficacia di trattamento di materiale rappresentativo di rifiuti medicali come: carta, cotone idrofilo e tessuti organici biologici.
Infine verranno descritte le linee guida per gli sviluppi futuri del prototipo al fine di aumentarne l‟efficienza nel trattamento dei rifiuti, nel recupero dell‟energia derivante dalla combustione dei syn-gas e nella purificazione dei gas da agenti inquinanti.
Tesi master Acosta Gabriela
This document provides a thermo-mechanical design of a high power neutron converter for the SPIRAL2 Facility. It includes 3 key parts:
1. A description of the neutron converter design including the graphite neutron converter, cooling system, delay window, beam collimator, and other components.
2. Analysis of material activation, radiation damage effects, and lifetime considerations for the graphite and other materials used.
3. Thermo-mechanical design calculations for the 50kW and 200kW neutron converters including temperature distributions, stresses, and deformations to validate the design meets specifications. Testing results of graphite evaporation rates, delay window performance, and ball bearing performance are also summarized.
Tesi PhD Zhang Yan
This document is the dissertation of Zhang Yan for the degree of Ph.D. It summarizes his research on sputtering niobium films into RF cavities and sputtering of superconducting V3Si films. The dissertation contains 6 chapters that discuss sputtering techniques for niobium cavities, sputtering niobium films on an RFQ model, co-sputtering and reactive sputtering of V3Si films, and thermal diffusion of V3Si films. The research aimed to develop sputtering methods for producing superconducting coatings on RF cavities and investigate the properties of V3Si films for potential use in superconducting radio frequency applications.
Tesi federico della ricca
Preparazione di un protocollo di deposizione magnetron sputtering di films sottili di Nitruro di Titanio
Tesi master Vanessa Rampazzo
Creazione di un database di attacchi chimici ed elettrochimici per il trattamento superficiale di metalli e leghe ad uso industriale
Tesi master Paolo Modanese
Il forno in alto vuoto della TAV è stato costruito per l’Istituto Nazionale di Fisica Nucleare agli inizi degli anni novanta ed è installato presso i Laboratori Nazionali di Legnaro (PD) nello stabilimento Alte Energie.
E’ stato realizzato in collaborazione con la ditta milanese TAV, che ha sede a Caravaggio (MI), specializzata nella produzione di forni in vuoto. E’ stato così possibile realizzare un forno mai costruito prima e che rispondeva appieno alle esigenze richieste.
Il forno in vuoto allora in uso era un modello a caricamento orizzontale le cui pareti interne e le resistenze erano realizzate in grafite. Da allora il vecchio forno è stato congedato, mentre il nuovo impianto è entrato subito in funzione per eseguire le brasature e i trattamenti termici sulle cavità acceleratici superconduttive a quarto d’onda dell’impianto Alpi.
Da allora fino ad oggi, il nuovo forno è sempre stato operativo, e grazie ad esso è stato possibile realizzare una grande varietà di trattamenti termici e brasature, per le più svariate applicazioni e impieghi.
Tesi Master Diego Tonini
La tecnologia degli acceleratori di particelle è tradizionalmente un serbatoio da cui attingere per il trasferimento di conoscenze tecniche dall’ambito della ricerca di base all’industria; in questo campo i Laboratori Nazionali de Legnaro dell’Istituto Nazionale di Fisica Nucleare (LNL – INFN) vantano una lunga esperienza come ente di ricerca di alto livello sia in ambito italiano che internazionale, nello sviluppo di nuove tecniche di accelerazione e nell’applicazione di conoscenze e metodologie tipiche della scienza dei materiali al campo degli acceleratori di particelle. Il master in Trattamenti di superficie applicati a tecnologie meccaniche innovative per l’industria si inserisce in questo contesto e funge da ponte per il trasferimento del bagaglio di conoscenze maturate durante gli anni per il trattamento dei materiali delle cavità acceleratrici a realtà industriali presenti sul territorio nazionale.
Il trattamento superficiale di una cavità acceleratrice superconduttiva è un passaggio fondamentale nella sua realizzazione, in quanto predispone lo strato superficiale del risonatore stesso a sostenere le condizioni di vuoto, temperatura ed alti campi elettrici presenti durante il funzionamento nell’acceleratore; questi trattamenti presuppongono un’approfondita conoscenza della scienza dei materiali ed una robusta preparazione di tipo applicativo oltre che teorico.
Il lavoro di questa tesi prende l’avvio da due istanze fondamentali, cioè
dall’applicazione delle conoscenze fisiche, chimiche e meccaniche apprese nel corso del master e dalla tradizione nello sviluppo di nuove tecniche di accelerazione dei Laboratori Nazionali di Legnaro con il fine di realizzare e caratterizzare un nuovo tipo di strutture acceleranti basate sul concetto di cristallo fotonico o photonic band gap (PBG) applicato alle microonde.
Durante questo lavoro si sono quindi realizzati alcuni prototipi di cavità PBG risuonanti a 14 e 6 GHz, in rame ed in niobio superconduttivo, sviluppando un metodo realizzativo che permettesse di evitare il ricorso a costose saldature electron beam; le cavità così realizzate sono state trattate superficialmente adattando il protocollo di trattamento utilizzato per altre cavità costruite nei Laboratori e studiando nuove strade tecniche per la loro finitura superficiale. Infine si è proceduto ad adattare i sistemi criogenici e RF
integrandoli per caratterizzare le cavità costruite.Questo progetto si inserisce in una collaborazione fra i Laboratori Nazionali di Legnaro
e la sezione INFN di Napoli, che ha fornito il supporto teorico sulla teoria dei cristalli fotonici applicati agli acceleratori e ha contribuito al progetto delle cavità attraverso le simulazioni dei campi elettromagnetici in cavità; il gruppo di legnaro si è occupato, oltre che della costruzione, dei trattamenti di superficie e delle misure, anche della parte riguardante la superconduttività in Radiofrequenza.
Tesi Master Giorgio Keppel
L’obiettivo di questo lavoro consiste nella progettazione e costruzione di un sistema UHV multicamera per la deposizione di film sottili. La tecnica
utilizzata per crescere i ricoprimenti sottili in questo caso è l’arco catodico continuo e pulsato. Questa tecnica permette di depositare film di elevato spessore in tempi estremamente veloci. La sorgente è pressoché puntiforme in confronto allo sputtering ed i film possono essere più spessi e più puri.
L’arc vapour deposition è una tecnica di deposizione di film sottiliche cade nella grande famiglia del PVD. Essa consiste nella vaporizzazione, da un elettrodo, del materiale che si vuole depositare per mezzo di un arco. La tecnica è veloce, efficiente e relativamente poco costosa: di conseguenza è uno dei metodi più usati a livello industriale per ottenere deposizioni di film sottili con ottime proprietà meccaniche.
Negli ultimi anni si stanno effettuando numerose ricerche, sia sperimentali sia
teoriche, al fine di mettere in evidenza come questa tecnica possa essere molto utile per produrre dei film sottili in grado di aumentare le proprietà fisiche e chimiche dei rivestimenti (come ad esempio un aumento della densità, un miglioramento dell’adesione al substrato, della stechiometria dei composti e di ulteriori caratteristiche chimico-fisiche).
In particolare la letteratura russa tratta numerosi esempi di come la tecnica
dell’arco, proprio grazie all’alto grado di ionizzazione dei vapori prodotti, renda possibile la produzione di rivestimenti con determinate proprietà chimico-fisiche e strutturali per particolari condizioni di processo, non altrimenti ottenibili con altre tecniche competitive quali il magnetron sputtering o l’evaporazione tramite electron beam Come si vedrà in
seguito, infatti, l’arc vapour deposition ha il grandissimo vantaggio di controllare non solo la ionizzazione degli atomi che si vogliono depositare, attraverso una combinazione di campi elettrici e magnetici, ma anche l’energia con la quale gli ioni arrivano sul substrato.
Le sorgenti ad arco vengono inoltre utilizzate come sorgenti per LRQ EHDP che
devono produrre elevate densità di corrente.
Nel mondo industriale, infatti, questa tecnica riscuote molto interesse.Il deposito tramite arco catodico è un processo fisico sottovuoto che consente la
crescita di film duri, compatti ed aderenti su un ampio spettro di materiali al di sotto dei 300°C: Il film, estremamente sottile, ha durezze da 1000 a 3500 HV: le applicazioni industriali sono molte e variano dalla ricopertura di utensili da taglio agli tampi per le materie plastiche e lavorazioni meccaniche, da prodotti d’arredamento (maniglie, copri interruttori, pomoli, etc.) a componentistica da bagno (rubinetti, docce, tubi, etc.).
......
Tes master Tommaso Cavallin
Fu una scoperta sensazionale quando Jun Akimitsu e colleghi annunciarono la loro scoperta nel gennaio 2001 che il diboruro di magnesio diveniva superconduttore attorno ai 40 K. L’interesse degli autori era inizialmente rivolto verso il semiconduttore CaB6 , il quale diviene ferromagnetico a seguito di trattamento leggero di doping. La loro intenzione era quella di sostituire parzialmente degli atomi di carbonio con altri di magnesio, omologo come shells elettronici ma più leggero, e gli parve conveniente utilizzare il diboruro di magnesio (ben noto sin dal 1953) per questo scopo.
L’aspetto interessante è che il magnesio diboruro è un composto molto usato nelle reazioni di sintesi del boro, dei borani, o di bururi di metalli di transizione e facilmente reperibile in qualsiasi laboratorio di chimica. E’ dunque facile immaginarsi lo stupore del mondo scientifico quando fu
comunicato che il MgB2 diviene superconduttore a temperature mai raggiunte sino ad allora da sistemi basati su semplici leghe intermetalliche non ossidate. Le fievoli speranze ed il derivante
mitigato interesse che vi era attorno ai superconduttori all’inizio della seconda metà del 1900 era dovuto soprattutto a due figure ....
More from thinfilmsworkshop (20)
Recently uploaded
AI in the Workplace Reskilling, Upskilling, and Future Work.pptx
Discover how AI is transforming the workplace and learn strategies for reskilling and upskilling employees to stay ahead. This comprehensive guide covers the impact of AI on jobs, essential skills for the future, and successful case studies from industry leaders. Embrace AI-driven changes, foster continuous learning, and build a future-ready workforce.
Read More - https://bit.ly/3VKly70
"Scaling RAG Applications to serve millions of users", Kevin Goedecke
How we managed to grow and scale a RAG application from zero to thousands of users in 7 months. Lessons from technical challenges around managing high load for LLMs, RAGs and Vector databases.
AWS Certified Solutions Architect Associate (SAA-C03)
AWS Certified Solutions Architect Associate (SAA-C03)
Biomedical Knowledge Graphs for Data Scientists and Bioinformaticians
Dmitrii Kamaev, PhD
Senior Product Owner - QIAGEN
JavaLand 2024: Application Development Green Masterplan
My presentation slides I used at JavaLand 2024
Introducing BoxLang : A new JVM language for productivity and modularity!
Just like life, our code must adapt to the ever changing world we live in. From one day coding for the web, to the next for our tablets or APIs or for running serverless applications. Multi-runtime development is the future of coding, the future is to be dynamic. Let us introduce you to BoxLang.
Dynamic. Modular. Productive.
BoxLang redefines development with its dynamic nature, empowering developers to craft expressive and functional code effortlessly. Its modular architecture prioritizes flexibility, allowing for seamless integration into existing ecosystems.
Interoperability at its Core
With 100% interoperability with Java, BoxLang seamlessly bridges the gap between traditional and modern development paradigms, unlocking new possibilities for innovation and collaboration.
Multi-Runtime
From the tiny 2m operating system binary to running on our pure Java web server, CommandBox, Jakarta EE, AWS Lambda, Microsoft Functions, Web Assembly, Android and more. BoxLang has been designed to enhance and adapt according to it's runnable runtime.
The Fusion of Modernity and Tradition
Experience the fusion of modern features inspired by CFML, Node, Ruby, Kotlin, Java, and Clojure, combined with the familiarity of Java bytecode compilation, making BoxLang a language of choice for forward-thinking developers.
Empowering Transition with Transpiler Support
Transitioning from CFML to BoxLang is seamless with our JIT transpiler, facilitating smooth migration and preserving existing code investments.
Unlocking Creativity with IDE Tools
Unleash your creativity with powerful IDE tools tailored for BoxLang, providing an intuitive development experience and streamlining your workflow. Join us as we embark on a journey to redefine JVM development. Welcome to the era of BoxLang.
GlobalLogic Java Community Webinar #18 “How to Improve Web Application Perfor...
Під час доповіді відповімо на питання, навіщо потрібно підвищувати продуктивність аплікації і які є найефективніші способи для цього. А також поговоримо про те, що таке кеш, які його види бувають та, основне — як знайти performance bottleneck?
Відео та деталі заходу: https://bit.ly/45tILxj
QA or the Highway - Component Testing: Bridging the gap between frontend appl...
These are the slides for the presentation, "Component Testing: Bridging the gap between frontend applications" that was presented at QA or the Highway 2024 in Columbus, OH by Zachary Hamm.
Discover the Unseen: Tailored Recommendation of Unwatched Content
The session shares how JioCinema approaches ""watch discounting."" This capability ensures that if a user watched a certain amount of a show/movie, the platform no longer recommends that particular content to the user. Flawless operation of this feature promotes the discover of new content, improving the overall user experience.
JioCinema is an Indian over-the-top media streaming service owned by Viacom18.
The Microsoft 365 Migration Tutorial For Beginner.pptx
This presentation will help you understand the power of Microsoft 365. However, we have mentioned every productivity app included in Office 365. Additionally, we have suggested the migration situation related to Office 365 and how we can help you.
You can also read: https://www.systoolsgroup.com/updates/office-365-tenant-to-tenant-migration-step-by-step-complete-guide/
Northern Engraving | Nameplate Manufacturing Process - 2024
Manufacturing custom quality metal nameplates and badges involves several standard operations. Processes include sheet prep, lithography, screening, coating, punch press and inspection. All decoration is completed in the flat sheet with adhesive and tooling operations following. The possibilities for creating unique durable nameplates are endless. How will you create your brand identity? We can help!
ScyllaDB Tablets: Rethinking Replication
ScyllaDB is making a major architecture shift. We’re moving from vNode replication to tablets – fragments of tables that are distributed independently, enabling dynamic data distribution and extreme elasticity. In this keynote, ScyllaDB co-founder and CTO Avi Kivity explains the reason for this shift, provides a look at the implementation and roadmap, and shares how this shift benefits ScyllaDB users.
Northern Engraving | Modern Metal Trim, Nameplates and Appliance Panels
What began over 115 years ago as a supplier of precision gauges to the automotive industry has evolved into being an industry leader in the manufacture of product branding, automotive cockpit trim and decorative appliance trim. Value-added services include in-house Design, Engineering, Program Management, Test Lab and Tool Shops.
Mutation Testing for Task-Oriented Chatbots
Conversational agents, or chatbots, are increasingly used to access all sorts of services using natural language. While open-domain chatbots - like ChatGPT - can converse on any topic, task-oriented chatbots - the focus of this paper - are designed for specific tasks, like booking a flight, obtaining customer support, or setting an appointment. Like any other software, task-oriented chatbots need to be properly tested, usually by defining and executing test scenarios (i.e., sequences of user-chatbot interactions). However, there is currently a lack of methods to quantify the completeness and strength of such test scenarios, which can lead to low-quality tests, and hence to buggy chatbots.
To fill this gap, we propose adapting mutation testing (MuT) for task-oriented chatbots. To this end, we introduce a set of mutation operators that emulate faults in chatbot designs, an architecture that enables MuT on chatbots built using heterogeneous technologies, and a practical realisation as an Eclipse plugin. Moreover, we evaluate the applicability, effectiveness and efficiency of our approach on open-source chatbots, with promising results.
"Frontline Battles with DDoS: Best practices and Lessons Learned", Igor Ivaniuk
At this talk we will discuss DDoS protection tools and best practices, discuss network architectures and what AWS has to offer. Also, we will look into one of the largest DDoS attacks on Ukrainian infrastructure that happened in February 2022. We'll see, what techniques helped to keep the web resources available for Ukrainians and how AWS improved DDoS protection for all customers based on Ukraine experience
Dandelion Hashtable: beyond billion requests per second on a commodity server
This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
Recently uploaded (20)
AI in the Workplace Reskilling, Upskilling, and Future Work.pptx
AI in the Workplace Reskilling, Upskilling, and Future Work.pptx
"Scaling RAG Applications to serve millions of users", Kevin Goedecke
"Scaling RAG Applications to serve millions of users", Kevin Goedecke
AWS Certified Solutions Architect Associate (SAA-C03)
AWS Certified Solutions Architect Associate (SAA-C03)
Biomedical Knowledge Graphs for Data Scientists and Bioinformaticians
Biomedical Knowledge Graphs for Data Scientists and Bioinformaticians
JavaLand 2024: Application Development Green Masterplan
JavaLand 2024: Application Development Green Masterplan
Introducing BoxLang : A new JVM language for productivity and modularity!
Introducing BoxLang : A new JVM language for productivity and modularity!
GlobalLogic Java Community Webinar #18 “How to Improve Web Application Perfor...
GlobalLogic Java Community Webinar #18 “How to Improve Web Application Perfor...
QA or the Highway - Component Testing: Bridging the gap between frontend appl...
QA or the Highway - Component Testing: Bridging the gap between frontend appl...
Discover the Unseen: Tailored Recommendation of Unwatched Content
Discover the Unseen: Tailored Recommendation of Unwatched Content
The Microsoft 365 Migration Tutorial For Beginner.pptx
The Microsoft 365 Migration Tutorial For Beginner.pptx
Northern Engraving | Nameplate Manufacturing Process - 2024
Northern Engraving | Nameplate Manufacturing Process - 2024
Poznań ACE event - 19.06.2024 Team 24 Wrapup slidedeck
Poznań ACE event - 19.06.2024 Team 24 Wrapup slidedeck
Northern Engraving | Modern Metal Trim, Nameplates and Appliance Panels
Northern Engraving | Modern Metal Trim, Nameplates and Appliance Panels
"Frontline Battles with DDoS: Best practices and Lessons Learned", Igor Ivaniuk
"Frontline Battles with DDoS: Best practices and Lessons Learned", Igor Ivaniuk
Dandelion Hashtable: beyond billion requests per second on a commodity server
Dandelion Hashtable: beyond billion requests per second on a commodity server
Terenziani - Atmospheric microwave plasma torches for advanced cleaning
- 1. Atmospheric Microwave Plasma Torches for Advanced Cleaning Giovanni Terenziani FabrizioStivanello Antonio Alessandro Rossi
- 5. Cut Off
- 8. Electron density: 1021 – 1026 m-3
- 9. Inelastic collision create reactive species
- 10. (elastic one heat heavy particle)
- 11. Te >> Th
- 12. Electron density: <1019 m-3
- 13. Inelastic collision induce the plasma chemistry
- 15. Types of Atmospheric Plasmas DC and low frequency discharge RF waves Microwaves discharge Industrial sources Arc torch Corona and DBD (pulsed DC) ICP (Inductivelycoupled plasma) IST (pulsed) Laboratorydevelopment Microplasma APPJ, cold plasma torch, hollow cathode, microplasma CCμP TIA (torche à injection axiale), MTD (Microwave torch discharge), MPJ (Microwave plasma jet), MPT (Microwave plasma torch)
- 16. Types of Atmospheric Plasmas DC and low frequency discharge RF waves Microwaves discharge Industrial sources Arc torch Corona and DBD (pulsed DC) ICP (Inductivelycoupled plasma) IST (pulsed) Laboratorydevelopment Microplasma APPJ, cold plasma torch, hollow cathode, microplasma CCμP TIA (torche à injection axiale), MTD (Microwave torch discharge), MPJ (Microwave plasma jet), MPT (Microwave plasma torch)
- 17. Semi Metallic Plasma Torch
- 19. Microwave equipment (wave guide, tuning system, circulator)
- 20. An ignition system
- 22. Plasma Flame Compressed Air gas is used Plasma flame: 15 cm long Wave Guide 3 cm thick
- 23. Cleaning Trials – Metallized Alumina BEFORE AFTER
- 24. Ultra-Cleaning Results on Copper Po210 Before AP After AP
- 25. Improvements – Vapor Added Vapor Generator characterized by: Operative pressure from 4 to 6 bar / from 58 to 87 psi Vapor temperature from 155 to 160° C Vapor capacity 62 g/min. max.
- 26. Improvements – Vapor Added A narrowing it’s been created in the glass injector Analumina capillary it’s been placed at the end of the vapor injector Vapor Inlet a b Air Inlet Alumina Capillary
- 28. Improvements – Vapor Added
- 31. Plasma Flames with and without Cut-Off 17 cm 10 cm
- 32. Improvements – Plasma Bending Pyrex Glass
- 34. Possible Applications – Cavities Treatment? 1.5 GHz Cavity Bended Quartz Tube
- 36. Enhancement of O+ and O++is possible by adding water vapor
- 37. Application in the RF Superconductivity Physics for surface treatment of cavities
- 39. Microwave Source – The Magnetron Supplyconnectors Cooling Fins Antenna
- 40. Microwave Source – The Magnetron Antenna Anodic Cavities Cathode emitting e-
- 41. Microwave Equipment Circulator: protects Magnetron from back-scattered wave 3-Stub Tuner: used to determine the right position of E field maximum
- 42. Microwave Equipment Wave Guide Hole for the quartz tube ( Position of max E field)
- 43. Analysis of I-V Curve with double LP To evaluate the electron temperature we track a parallel to x axisand the intercept with the interpolation of the curve in the concavity changing point gives the value of 2kTe/e So kTe/e ≈ 9.65 eV Te = 11400 K ???????
- 44. Primary electrons measure? Double Probe Double Probe ruled by primary e-
- 45. Our Results