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Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 JRA-11 (TRAPSPEC) Improvements and developments of.

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Presentation on theme: "Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 JRA-11 (TRAPSPEC) Improvements and developments of."— Presentation transcript:

1 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 JRA-11 (TRAPSPEC) Improvements and developments of ion traps, spectrometers and detectors for low-energy nuclear physics experiments K.U.Leuven LPC-Caen GSI Jyväskylä Univ. CERN-ISOLDE Krakow Jagell.Univ. Univ. Mainz RMKI-Budapest (ass.)

2 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 Design and development of multi-purpose set-ups for precision decay spectroscopy in ion traps  -particles and CE electrons: Si, MCP, wire chamber recoil ions: MCP detector, channeltron with CDEM Design and development of new trap configurations cryogenic Penning trap  - superheavy elements - doubly and triply charged ions measurements on daughter isotopes of those originally trapped system to monitor phase space of trapped ion cloud

3 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 Performance enhancement of Penning-trap experiments by using dedicated new electron- and ion sources electron & ion sources: - reference masses - study of systematic effects - off-line studies Retardation spectrometers for recoil-ion spectroscopy for trap-assisted beta-neutrino correlation measurements  -decay of exotic ions neutron  -decay

4 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 Task T-J11-2: Extended Paul trap set-up at SPIRAL-GANIL (LPC-Caen) sched.realiz.remark Chamber arrangement defined and fixed12/0504/08 Detectors defined and built 06/07 Ion cloud monitoring system ready09/07  -recoil coincidences from decays in Paul trap12/0805/05 * - 2005, 2006: > 10 5 beta-ion coincidences - planning modified - all milestones will be realized in time

5 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 6 He  -recoil coincidences LPC-Caen V-A theory

6 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 Task T-J11-3: Improved set-up for SHIPTRAP (SHIPTRAP-GSI) sched.realiz.remark Detector concept for in-trap decay ready12/0512/06 Test of cryogenic Penning trap system 12/06 DAQ and control system ready 06/07 First measurements 12/08 - some delay due to problems to find postdoc; solved as of 01/07 - steady progress; milestones not at stake - 52 masses (17 new; accuracy 5 x 10 -8 )

7 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 SHIPTRAP-GSI cryogenic trap test set-up

8 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 Task T-J11-4: New detector and in-trap mass spectrometry with ISOLTRAP (CERN-ISOLDE) sched.realiz.remark Test set-up for CDEM 09/0508/05 Software development 03/0601/06 Test CDEM 12/0605/06 * Mass spectrometry 12/0808/06 * - all milestones realized - detection efficiency improved by factor ~3 - masses of A = 61-63 Fe nuclides (not produced at ISOLDE)

9 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 ISOLTRAP/CERN-ISOLDE

10 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 Task T-J11-5: In-trap spectrosc. & high-resol. mass spectrom. with JYFLTRAP (Jyväskylä Univ.) sched.realiz.remark Data acquisition operational 03/06 80% New trap available12/07 06/06 * Results of multiply charged ions study 12/06 60% First measurements with upgraded system 12/0709/06 * - 1 st version of DAQ succesfully tested; being improved - tests with doubly-charged ions already performed - preparations for higher charge states in progress - 110 masses measured (accuracy up to 8 x 10 -9 )

11 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 Jyväskylä Univ. in-trap CE spectrum new decay scheme

12 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 Task T-J11-6: Electron tracking detector for beta-decay experiments (UJ-Krakow) sched.realiz.remark Concept of prototype available 12/0512/05 Prototype operational 12/08 Readout and DAQ system available 12/08 - MWDC operating at P>0.3 bar - ~ linear response (t drift vs. pos.) - spatial resolution ~1.5 mm - detector for LPC-Caen in progress

13 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 MWDC detector 90 Sr source scintillator PMT UJ-Krakow Test set-up

14 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 Task T-J11-7: Detector development for WITCH (KU-Leuven) sched. realiz. remark Operation of MCP+pin diodes in high B-field 06/06 12/06 Normalization for recoil ion counting 12/05 12/07 Measurement of recoil ion energy spectrum 12/06 11/06 Detector set-up for beta-spectroscopy 12/08 - tests of MCP finished; Si pin diode ongoing - new concept for normalization (scintillator i.s.o. Si pin diodes) - first recoil ion spectrum measured (normalization via t 1/2 ) - Geant-4 code for simulation of beta-spectra available

15 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 KU-Leuven 124 In recoil spectrum MCP in magnetic field 124 In recoil spectrum 39 K

16 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 Task T-J11-1 & 8: Neutron decay retardation spectrom. + simulations and calculations (U-Mainz; Budapest) sched. realiz. remark Design calculations finished12/0612/05 * Systematic effects understood06/08 Data analysis under control12/08 Spectrometer tested 12/05 10/05 Electron source (replaced by He source) 06/06 09/07 System tested and operational 03/08 First experiment 12/08

17 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 U-Mainz; Budapest magnetic shielding proton detector

18 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006 JRA-11 (TRAPSPEC) Improvements and developments of ion traps, spectrometers and detectors for low-energy nuclear physics experiments

19 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006

20 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006

21 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006

22 Nathal Severijns, JRA-11 TRAPSPEC TRAPSPEC JRA-11 EURONS PCC Meeting, Groningen, 11-12 December 2006

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