Off-line Tests and first On-Line Off-line Tests and first On-Line Installation Installation of the Laser Ion Source Trap LIST of the Laser Ion Source Trap LIST - - Application for Test of CVC and CKM Application for Test of CVC and CKM Unitarity Unitarity F. Schwellnus 1 , T. Gottwald 1 , C. Mattolat 1 , V. Sonnenschein 1 , K. Wendt 1 , R. Catherall 2 , B. Marsh 2 , F. Österdahl 3 , V. Fedosseev 2 , K. Blaum 1,4 , H.-J. Kluge 4 , S. Schwarz 5 1 Institut für Physik, Johannes Gutenberg Universität Mainz 2 CERN Physics Department 3 Department of Physics, Royal Institute of Technology, Stockholm 4 Gesellschaft für Schwerionenforschung, Darmstadt 5 NSCL, Michigan State University, East Lansing Proposal to the INTC, 21. May 2007
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F. Schwellnus 1 , T. Gottwald 1 , C. Mattolat 1 , V. Sonnenschein 1 , K. Wendt 1 ,
Proposal to the INTC, 21. May 2007. Off-line Tests and first On-Line Installation of the Laser Ion Source Trap LIST - Application for Test of CVC and CKM Unitarity. F. Schwellnus 1 , T. Gottwald 1 , C. Mattolat 1 , V. Sonnenschein 1 , K. Wendt 1 , - PowerPoint PPT Presentation
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Off-line Tests and first On-Line Installation Off-line Tests and first On-Line Installation
of the Laser Ion Source Trap LISTof the Laser Ion Source Trap LIST
--
Application for Test of CVC and CKM Unitarity Application for Test of CVC and CKM UnitarityF. Schwellnus1, T. Gottwald1, C. Mattolat1, V. Sonnenschein1, K. Wendt1,
R. Catherall2, B. Marsh2, F. Österdahl3, V. Fedosseev2,
K. Blaum1,4, H.-J. Kluge4, S. Schwarz5
1 Institut für Physik, Johannes Gutenberg Universität Mainz
2 CERN Physics Department
3 Department of Physics, Royal Institute of Technology, Stockholm
4 Gesellschaft für Schwerionenforschung, Darmstadt
5 NSCL, Michigan State University, East Lansing
Proposal to the INTC, 21. May 2007
INTC Meeting 21.05. – 22.05.2007
OverviewOverview
• The idea:
Development of an ion source which combines very high selectivity with
excellent control over the ion beam properties.
• The basis:
The successfull joint material and laser tests for RILIS
at the off-line separator in Jan. 2007
• The method:
Combination of the advantages of a laser ion source with those
of a radio frequency quadrupole cooler and buncher.
• The physics case:
Test of CKM unitarity and constant vector current hypothesis CVC by mass
measurements on 62Ga and 62Zn using ISOLTRAP
• The proposal:
Request for off-line and on-line beam time on 62Ga & 62Zn at ISOLDE in 2008
INTC Meeting 21.05. – 22.05.2007
Motivation for RILIS & LIST
1. Atomic Beam Source
3. Mass Separator 4. Laser System
Proton Beam
Ion Repeller
to Experiments
Laser- Beams
HV Platform
ISOLDE RILIS
Source
IonBeam
Ti:Sa 1
Ti:Sa 2
Ti:Sa 3
Nd:YAG
Laser System
Mass Separator
with Surface Ion Reppeler
Gas filledRFQ Trap
2. Gas filled RFQ Trap Section for Bunching and Cooling
Production of isobarically pure ion beams with optimum spatial and
temporal ion pulse control using a gas-filled RFQ structure
INTC Meeting 21.05. – 22.05.2007
Principle of the LISTPrinciple of the LIST
Electron Repeller
Ion Repeller
Z
Release
10 mmEnd Plate
SIMION 7.0: simulation of the potential distribution
Laser IonsSurface Ions
UDC
Atomizer
Electrons
Laser BeamsAtoms Ions
SwitchableElectrodes
RFQ SegmentsRFQRFQ SegmentsSegments
Accumulate
Helium Buffer Gas ~ 10-3 mbar
Laser Ionization
Electron Repeller
Ion Repeller
Z
Release
10 mmEnd Plate
SIMION 7.0: simulation of the potential distribution
Laser IonsSurface Ions
UDCUDC
Atomizer
Electrons
Laser BeamsAtomsAtoms IonsIons
SwitchableElectrodes
RFQ SegmentsRFQRFQ SegmentsSegments
Accumulate
Helium Buffer Gas ~ 10-3 mbar
Laser Ionization
INTC Meeting 21.05. – 22.05.2007
Technical RealizationTechnical Realization
LIST prototypes developed and characterized in off line tests @ Mainz RISIKO MS
LIST 1 LIST 2 LIST 3 (in preparation)
Efficient resonance ionization via an all-solid state Ti:sapphire laser system:
INTC Meeting 21.05. – 22.05.2007
60 kV RISIKO Mass Separator @ UMz
ISOLDE 2 Frontend
UMz Ti:Sa laser system
Orsay EmittanceMeter
60 kV RISIKOMass Separator
@ IPhy, UMz
INTC Meeting 21.05. – 22.05.2007
Pump laser: Photonics Industries Nd:YAG, 532 nm, >80 W at 10 kHzTunable lasers: 2 single & 1 double sided UMz Ti:Sapphire lasers
- frequency doubling, tripling and quadrupling- computerized temporal and spectral control - efficient ionization of 19 elements demonstrated
tested or in user at: IKch&IPhy@UMz, TRIUMF, JYFL, Oak Ridge, LLN, ISOLDE, UNagoya
commercialized at the International Laser Fair, Munich, June 2007