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Sparc Ebit September 2008
 

Sparc Ebit September 2008

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- An Introduction to the R&D Cooperation of GSI with the TU Dresden and DREEBIT GmbH -

- An Introduction to the R&D Cooperation of GSI with the TU Dresden and DREEBIT GmbH -

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Sparc Ebit September 2008 Sparc Ebit September 2008 Presentation Transcript

  • Supported within the scope of the technological support by the European Regional Development Fund (EFRE) 2007 - 2010 and by the Freistaat Sachsen A. Silze, E.Ritter, R. Mertzig, G. Zschornack TU Dresden · Institute of Applied Physics O. Kester, S. Geyer, A. Sokolov, D.F.A. Winters GSI F. Großmann, V.P. Ovsyannikov, F.Ullmann DREEBIT GmbH Subsidized by the R&D project “ Design of an EBIS/T injector for HITRAP and FLAIR and an EBIS/T charge breeder for MATS“ The SPARC-EBIT: A New Test Injector for HITRAP - An Introduction to the R&D Cooperation of GSI with the TU Dresden and DREEBIT GmbH -
    • About SPARC-EBIT
    • a room-temperature
    • Electron Beam Ion Trap
    • of the Dresden EBIT type
    • in operation at GSI since
    • November 2007
    The source provides bunches or low-emittance beams of highly charged ions , e.g. Xe 44+ , as well as high-current low-emittance beams of low charged ions such as protons, alpha particles, ... The SPARC-EBIT
  • electron gun ion extraction drift tubes axial potential radial potential electron beam Highly charged ions are produced by impact ionization in a high-density electron beam which is compressed by a strong magnetic field permanent magnets in Helmholtz configuration The SPARC-EBIT
    • Advantages of the Dresden EBIT
    • tabletop source of HCIs
    • transportable system
    • easy to operate
    • long-term stable
    • low initial, operational, and
    • maintenance costs
    • allows for spectroscopic
    • investigations on HCIs
    10 cm Be window Highly charged ions of various low- and high -Z elements can be produced very efficiently and investigated in different ways at variable electron energies of up to 15 keV The SPARC-EBIT
  • Xenon: Pulsed mode trap time: 5 s Argon: variable trap time Ion production (Ions/s) Extraction spectra taken at Dresden facilites The SPARC-EBIT 10,000 12,500 Xe 36+ 500 10,000 Xe 44+ - 6,000 Ar 18+ 400,000 1,000,000 Ar 16+ - 600,000 Ne 10+ Leaky mode Pulsed mode Species
  • Current activities: Test measurements at “Heckhalle“ Use of the SPARC-EBIT at GSI Source characterization  X-ray spectroscopy  Magnetic scanning  Time-of-Flight spectroscopy Investigation of the properties of the Dresden EBIT as a charge breeder
  • Use of the SPARC-EBIT at GSI Source characterization  X-ray spectroscopy  Magnetic scanning  Time-of-Flight spectroscopy Investigation of the properties of the Dresden EBIT as a charge breeder Current activities: Test measurements at “Heckhalle“
  • Use of the SPARC-EBIT at GSI Current activities: Simulations of charge breeding with the SPARC-EBIT
  • t = 0 µs t = 1.5 µs t = 50 µs
    • estimated charge breeding
    • efficiency: 1-2 %
    •  difficult but possible
    • experimental investigation
    • at “Heckhalle“ and in Dresden
    Use of the SPARC-EBIT at GSI Current activities: Simulations of charge breeding with the SPARC-EBIT K 1+ K 2+
  • towards the experiments LEBT & cooler trap 5 m 4MeV/u 0.5MeV/u 6keV/u 5keV*q EBIT
    • Plans for the SPARC-EBIT after test phase
    • transport and installation at HITRAP
    •  offline test injector
    • lower level
    Use of the SPARC-EBIT at GSI
    • Plans for the SPARC-EBIT after test phase
    • transport and installation at HITRAP
    •  offline test injector
    • upper level
    EBIT SPECTRAP g-factor measurement surface experiment MOT Use of the SPARC-EBIT at GSI
  • Injector: EBIT/S + RFQ LSR USR HITRAP #1: Design of an optimized EBIT / EBIS injector for FLAIR Future Projects of the R&D Cooperation
    • Charge breeding in an
    • EBIT/S will be an essential
    • component of MATS facility
    • for high-precision mass
    • measurements using HCIs
    • Two candidates as possible
    • charge breeders of this
    • project:
    • MSU EBIT or
    • Dresden EBIS-SC
    EBIT/S #2: Development of a high efficiency charge breeder for MATS Future Projects of the R&D Cooperation
  • Dresden EBIT Dresden EBIS Dresden EBIS-A 20 cm Three existing generations of room temperature electron beam ion traps/sources: Ion Source Development in Dresden 400 25 250 6 Dresden EBIS 600 250 B (mT) 30 15 Max. electron energy (keV) 6 2 Trap length (cm) 500 50 Max. electron current (mA) Dresden EBIS-A Dresden EBIT Parameter
  • Experimental possibilities Investigation of the ionization process in general (energy and time resolved X-ray spectroscopy, determination of ionization cross sections) Electron current density measurements (essential for charge breeding) Ion pulse length measurements (important injector property) Ion Source Development in Dresden KLL Dielectronic Recombination of Kr q+
  • Experimental possibilities Investigation of the ionization process in general (energy and time resolved X-ray spectroscopy, determination of ionization cross sections) Electron current density measurements (essential for charge breeding) Ion pulse length measurements (important injector property) Ion Source Development in Dresden Kr 32+ Kr 31+ Kr 30+ Kr 29+ Kr 28+
  • Dresden EBIS: <j e >= 260 A/cm 2 Experimental possibilities Investigation of the ionization process in general (energy and time resolved X-ray spectroscopy, determination of ionization cross sections) Electron current density measurements (essential for charge breeding) Ion pulse length measurements (important injector property) Ion Source Development in Dresden
  • Experimental possibilities Investigation of the ionization process in general (energy and time resolved X-ray spectroscopy, determination of ionization cross sections) Electron current density measurements (essential for charge breeding) Ion pulse length measurements (important injector property) Ion Source Development in Dresden C 6+ pulse extracted from Dresden EBIS-A trap open ion flight time
  • Experimental possibilities Investigation of the ionization process in general (energy and time resolved X-ray spectroscopy, determination of ionization cross sections) Electron current density measurements (essential for charge breeding) Ion pulse length measurements (important injector property) Ion Source Development in Dresden C 6+ pulse extracted from Dresden EBIS-A
  • Experimental possibilities Investigation of the ionization process in general (energy and time resolved X-ray spectroscopy, determination of ionization cross sections) Electron current density measurements (essential for charge breeding) Ion pulse length measurements (important injector property) Ion Source Development in Dresden 3 µs 45 µs
  • Time-of-Flight-Secondary Ion Mass Spectroscopy using Highly Charged Ions Dresden EBIT NanoFIBcolumn Sample stage control Focused Ion Beam machine using Highly Charged Ions Further activities Ion Source Development in Dresden
  • Compact ion source setup with Wien filter module Further activities Ion Source Development in Dresden
  • In order to reach higher electron currents and electron current densities and thus higher ionization factors magnetic flux densities beyond 1 Tesla are required Dresden EBIS-SC Superconducting magnet system based on the most modern refrigeration and electron beam technologies The Dresden EBIS-SC – A new ion source generation Ion Source Development in Dresden Higher charge states Higher ion output
  • The Dresden EBIS-SC – A new ion source generation Ion Source Development in Dresden Magnetic field created by superconducting solenoid coils with use of cryogen-free refrigerators (cooling without liquid gases) and soft iron components Advantages like compact size and economic efficiency are kept by using up-to-date superconducting and refrigerating technology approx. 50 cm Total length up to 30 keV Electron energy up to 6 T Magnetic field (on axis) 3·10 8 ions (pulsed mode)  max. current of Xe 44+ up to 5·10 10 e  Trap capacity 20 cm Trap length up to 1000 A/cm 2  Electron current density 1 A Electron current Value Parameter
  • The new EBIS-SC test facility Ion Source Development in Dresden 1 m
  • The new EBIS-SC test facility Ion Source Development in Dresden 1 m Analysing magnet EBIS-SC Quadrupole Liquid Metal Ion Source Charge breeding test setup
    • The SPARC-EBIT
    • New transportable source of highly charged ions available at GSI
    • The use of the SPARC-EBIT at GSI
    • Characterization experiments to determine its capabilities as test
    • injector and charge breeder are currently in progress
    • Later on it will be used for tests of the cooler trap and the low energy
    • beamline at HITRAP
    • Future projects of the R&D cooperation
    • Design of an EBIT/S injector for FLAIR
    • Development of a high-efficiency charge breeder for MATS
    Summary
  •