This document summarizes work being done at the Flerov Laboratory of Nuclear Reactions in Dubna, Russia on preliminary signal processing for a nuclear physics experiment. It describes the Dubna Gas-Filled Recoil Separator used to separate nuclear reaction products and a new focal plane detector with silicon strip detectors. It also provides schematics and details of the analog detection system being developed to read out signals from the detector, including preamplifiers, position encoding, pulse shaping amplifiers, and data acquisition.
Spektralanalyse am technologischen Limit: Anwendungen in der Radioastronomie
Wo Prozessoren in ihrer Leistungsfähigkeit nicht mehr ausreichen, wird programmierbare Logik in Form von FPGAs (Field Programmable Gate Arrays) eingesetzt. Hunderte von Rechenoperationen können damit innert Nanosekunden erledigt werden. Diese Technologie eignet sich vorzüglich für die Echtzeit-Spektralanalyse von Signalen.
Typische Anwendungen finden sich in der Radioastronomie oder der Atmosphärenphysik. Typisch sind die enormen Abtastraten von mehreren Giga-Samples pro Sekunde bei Wandler-Auflösungen von ³ 10 Bit, Signal-Bandbreiten von > 1 GHz, aufgelöst in ³ 16'384 Kanälen. Die Leistungsgrenze wird in diesen Bereichen stetig nach oben geschoben.
Mit dem präsentierten Projekt wurde ein neuer Meilenstein punkto Funktionalität und Verarbeitungsgeschwindigkeit gesetzt. So ist das realisierte Spektrometer 1- oder 2-kanalig konfigurierbar, in der 2-kanaligen Version können beispielsweise die Summen- und Differenzspektren gerechnet werden, oder das Kreuzleistungs-Spektrum. Anstelle der "normalen" Fast Fourier Transform (FFT) wurde eine digitale Filterbank implementiert.
Im Vortrag werden aktuelle und künftige Anwendungen im Bereich der Radioastronomie vorgestellt. Es sind Anlagen und Projekte, die weltweit in Betrieb sind oder in Planung stehen. Messresultate zeigen die enorme Leistungsfähigkeit, aber auch die Grenzen der digitalen Spektralanalyse.
Bruno Stuber, Hochschule für Technik FHNW und Christian Monstein, ETH Zürich
Spektralanalyse am technologischen Limit: Anwendungen in der Radioastronomie
Wo Prozessoren in ihrer Leistungsfähigkeit nicht mehr ausreichen, wird programmierbare Logik in Form von FPGAs (Field Programmable Gate Arrays) eingesetzt. Hunderte von Rechenoperationen können damit innert Nanosekunden erledigt werden. Diese Technologie eignet sich vorzüglich für die Echtzeit-Spektralanalyse von Signalen.
Typische Anwendungen finden sich in der Radioastronomie oder der Atmosphärenphysik. Typisch sind die enormen Abtastraten von mehreren Giga-Samples pro Sekunde bei Wandler-Auflösungen von ³ 10 Bit, Signal-Bandbreiten von > 1 GHz, aufgelöst in ³ 16'384 Kanälen. Die Leistungsgrenze wird in diesen Bereichen stetig nach oben geschoben.
Mit dem präsentierten Projekt wurde ein neuer Meilenstein punkto Funktionalität und Verarbeitungsgeschwindigkeit gesetzt. So ist das realisierte Spektrometer 1- oder 2-kanalig konfigurierbar, in der 2-kanaligen Version können beispielsweise die Summen- und Differenzspektren gerechnet werden, oder das Kreuzleistungs-Spektrum. Anstelle der "normalen" Fast Fourier Transform (FFT) wurde eine digitale Filterbank implementiert.
Im Vortrag werden aktuelle und künftige Anwendungen im Bereich der Radioastronomie vorgestellt. Es sind Anlagen und Projekte, die weltweit in Betrieb sind oder in Planung stehen. Messresultate zeigen die enorme Leistungsfähigkeit, aber auch die Grenzen der digitalen Spektralanalyse.
Bruno Stuber, Hochschule für Technik FHNW und Christian Monstein, ETH Zürich
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Session 2 Technology Showcase
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VINETA II is an experiment to investigate magnetic reconnection in a controlled laboratory environment. The purpose of this work is to test the Langmuir probe diagnostics system by measuring the time evolution of 2D profiles of highly reproducible transient argon plasma discharges generated by an array of 7 electron guns. This is done by positioning the tip of a Langmuir probe at various positions on a 2D plane and by biasing it with an AC voltage with amplitude in the range 60V-80V and frequency in the range 10 kHz – 100 kHz. The end result is a 2D profile evolving in time for each parameter that can be extracted from the probe (T_e, n_e).
2019-06-07 Characterization and research of semiconductors with an FTIR spect...LeonidBovkun
2019-06-07 Educational seminar at EP-3 University of Wuerzburg
I will present particular experiments and related results with FTIR spectrometer, so one may consider these experiments complimentary for you research.
Tra Trieste e Nova Gorica per lo studio dei fenomeni ultraveloci / Between Trieste and Nova Gorica for the study of ultra-fast phenomena - by Cesare Grazioli
HPLC works on the principle of the separation of the material according to their molecular weight and polar FTIR spectroscopy deals with the quantitative measurement of the interaction between IR radiation and materials. FTIR reveals molecular-vibrational transitions and provides characteristic information on molecular structure.
Medical Imaging - Opportunities for Business Seminar
24/01/12
Session 2 Technology Showcase
Three technologies developed or enhances at the University of Leicester are presented
Technical details of one of the two first color-flow Doppler two- dimensional real-time cardiac ultrasound systems.
Moving blood flow is displayed in color in real time superimposed on a real-time grayscale anatomical image.
Langmuir probe diagnostics at VINETA II experimental apparatusTiziano Fulceri
VINETA II is an experiment to investigate magnetic reconnection in a controlled laboratory environment. The purpose of this work is to test the Langmuir probe diagnostics system by measuring the time evolution of 2D profiles of highly reproducible transient argon plasma discharges generated by an array of 7 electron guns. This is done by positioning the tip of a Langmuir probe at various positions on a 2D plane and by biasing it with an AC voltage with amplitude in the range 60V-80V and frequency in the range 10 kHz – 100 kHz. The end result is a 2D profile evolving in time for each parameter that can be extracted from the probe (T_e, n_e).
Jyväskylän yliopiston kiihdytinlaboratorio - perustutkimusta ja uusia avauksi...
Schlattauer Leo
1. Preliminary Processing of the
Signals in a Nuclear Physics
Experiment
Supervisor: Dr. Alexey Anatolievich Voinov
Participants: Jakub Navařík 1
Brett Rosiejka 2
Leo Schlattauer 1
1 Plucky University Olomouc
Faculty of Science
Department of Experimental Physics
17. Listopadu 12, Olomouc, Czech Republic
2 University of Wisconsin – La Crosse
Department of Physics
1725 State Street, La Crosse Wisconsin 54601
United States of America
2. Synopsis
• Flerov Laboratory of Nuclear Reactions (FLNR)
• Dubna Gas-Filled Recoil Separator (DGFRS)
• Schematics of Amplifiers
3. Founder Georgy Nikolayevich Flerov
• 1913-1990
• Flerovium 114, 2012
Element 105, Dubnium
• 1997
Synthesis and Properties of Superheavy Nuclei
• Vladimir Utyonkov, Head of Sector
• Alexey Voinov, Head of Measuring Equipment
Group
• Currently Z = 117
• Dubna Gas-Filled Recoil Separator (DGFRS)
• 1989
• Elements 108, 110, 112, 113, 114, 115, 116, 118
Flerov Laboratory of Nuclear
Reactions est. 1957
9. Focal Plane Detector
Consists of Double-Sided Silicon Strip Detector (DSSSD)
Old New
For the new DSSSDs, modifications of the
current electronics system are required.
• Three 40 x 40 mm detectors
• Total of 12 vertical strips
• Total of 20 horizontal cells
• Equal to 240 single detectors
with space resolution ≈ 20 mm2
• Single 120 x 120 mm detector
• 128 vertical strips
• 48 horizontal cells
• Equal to 6144 single detectors
with space resolution ≈ 1 mm2
11. Why both systems in parralel?
• For comparison and verification of results
obtained by two totally different systems.
• Only the analog system can execute
experimental stop-beam conditions in real
time.
12. focalplane
detector
Preamplifier
Coder for horizontal and vertical
strips with fast discriminator.
Returns position where nuclei was
implanted.
register
PLC CAMAC
controller
Spcetroscopic
amplifier
PC
with
software
Block Diagram of Analog Detection System being Developed in Dubna
position logic code in x,y
addressofevent
to A
A
α range
SF range
multiplexer
withcoder
ADconverterADconverter
memory
memory
183channels
183
channels
128 channel coder
48channels
fromfrontsidedetector
48
channels
48
channels
1 ch. of event which is in discrimination window and
has to be measured
Asignal from 1 ch.
VITO detector
code of the selected strip which has
signal in the discrimination window
trigger
trigger
AD converter memory
trigger
trigger system
multiplexer
withcoder
code of strip
13. focalplane
detector
Preamplifier
Coder for horizontal and vertical
strips with fast discriminator.
Returns position where nuclei was
implanted.
register
PLC CAMAC
controller
Spcetroscopic
amplifier
PC
with
software
position logic code in x,y
addressofevent
to A
A
α range
SF range
multiplexer
withcoder
ADconverterADconverter
memory
memory
183channels
183
channels
128 channel coder
48channels
fromfrontsidedetector
48
channels
48
channels
1 ch. of event which is in discrimination window and
has to be measured
Asignal from 1 ch.
VITO detector
code of the selected strip which has
signal in the discrimination window
trigger
trigger
AD converter memory
trigger
trigger system
multiplexer
withcoder
code of strip
Block Diagram of Analog Detection System being Developed in Dubna