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Present and future physics possibilities at ISOLDE

Present and future physics possibilities at ISOLDE. Karsten Riisager PH Department, CERN http://www.cern.ch/isolde. ISOLDE@CERN. RIBs for 40 years. High-energy proton beam 600 MeV → 1.4 GeV Accumulated experience in RIB-production and -manipulation targets and ion sources

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Present and future physics possibilities at ISOLDE

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  1. Present and future physics possibilities at ISOLDE Karsten Riisager PH Department, CERN http://www.cern.ch/isolde Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  2. ISOLDE@CERN Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  3. RIBs for 40 years • High-energy proton beam • 600 MeV → 1.4 GeV • Accumulated experience in RIB-production and -manipulation • targets and ion sources • charge breeding • cooling, bunching, ... • Many experimental tools Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  4. ISOLDE yields, 2006 ISOLDE target group M. Turrion Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  5. Efficiencies for beams 2006 Tot. eff. = Trap × BTS × EBIS × Sep 27Al 116Cd 7Li 238U Rex efficiencies So far: 53 radioactive isotopes of 20 elements – reaching 188Hg F. Wenander Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  6. The Coulex program 20 40 50 82 184,186,188Hg 82 106,108,110Sn 50 122,124Cd 138,140Xe 140,148,150Ba 70Se 96Sr, 88Kr, 92Kr 28 74,76,78,80Zn 67,69,71,73Cu, 68Cu, 70(m)Cu 68Ni 30,31,32Mg 20 Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  7. Collective properties studied by Coulomb excitation CD – detector Double sided Si strip detector DE-E detector Miniball PPAC Beam dump detector 30,32Mg REX- ISOLDE E=2.86 MeV/u 107Ag Beam Beam • 24 - 6-fold segmented Ge detectors • flexible geometry • efull energy(@ 1.33 MeV)  7 % • fully digital electronics + pulse shape analysis (PSA) • electronic segmentation and PSA: 50-100 fold increase in granularity • r from central core • f from induced charge in neighboring segments • low-multiplicity g-ray experiments with weak exotic beams impurities Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  8. Post-accelerated isomeric beamsCoulomb excitation of 68,70Cu (5-) • 68,mCu (2.83 MeV/u) @ 120Sn (2.3 mg/cm2) 4- 956 No Doppler Corr. E2 178 (M1) 778 0.7 < T1/2 < 4 ns (3-) 6- 722 T1/2 = 3.75 min 693 84 (2+) 85 T1/2 = 7.84 ns 1+ 0 T1/2 = 31.1 s • 70Cu (2.83 MeV/u) @ 120Sn (2.3 mg/cm2) (5-) 506 Doppler Corr. for A=70 242 T1/2 = 6.6 s 1+ 4- 228 E2 127 (M1) (3-) 101 T1/2 = 33 s 6- 0 T1/2= 44.5 s I Stefanescu et al, PRL 98 (2007) 122701 Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  9. Combination of b-g spectroscopy, laser ionization and mass measurements  (6–) state = gs 101(3) keV Unambiguous state assignment!  (3–) state = 1.is ME of ground state is 240 keV higher than literature value! Excellent agreement with decay studies. 242(3) keV with cleaning of 6– state R  1·10-7  1+ state = 2.is     Intensity ratio: 16% 80% 4%  normalized to the area  Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  10. 186Pb A.Andreyev et al. Nature, 405, 430 (2000) Nilsson-Strutinsky Shape coexistence in the Pb region 182Pb: T1/2 55 ms 1 count/min ISOLDE; more than 30 years ago Resonant Laser Ionization H. De Witte et al. PRL 98, 112502 (2007) Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  11. More evidence Resonant Laser Ionization of Po isotopes T. Cociolis et al., preliminary results Coulomb excitation of 184,186,188Hg isotopes N. Bree, A.Petts et al., preliminary results Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  12. An example: 30-33Mg • 2nd 0+ in 30Mg at 1788 keV, weak mixing – Schwerdtfeger at Dec 07 ISOLDE workshop • Coulex of (30,32Mg and) 31Mg – Reiter do • Transfer d(30Mg,31Mg)p – Bildstein do • Magnetic moments 31,33Mg, COLLAPS – Yordanov et al, PRL 99 (2007) 212501 • Masses, MISTRAL – Lunney et al, Eur. Phys. J. A28 (2006) 129 • Level lifetimes – Mach et al, Eur. Phys. J. A25 (2005) 105 • Radii, beta-decay studies,... Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  13. Decay studies @ ISOLDE previous IS414 results: H. Mach et al. Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  14. Aims of the upgrade • Intensity • Energy • Coulex for all RIB • Transfer reactions • Efficiency low energy + accelerated • Selectivity • Beam “quality” • Reduced phase space • Bunching • Polarization ..... Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  15. HIE-ISOLDE at CERN Increase in REX energy from 3 to 5.5 MeV/u (later increase to 10 MeV/u possible) Increase proton intensity 2  6 A (LINAC4, PSB upgrade) - target and front-end upgrade RFQ cooler, REX-TRAP, REX-EBIS REX-ECR upgrades Super-HRS for isobaric separation RILIS upgrade & LIST Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  16. ... already ongoing RFQ cooler UK, JYFL, Mainz.. RILIS upgrade Sweden (Wallenberg) REX extension UK (Cockcroft Institute..), Leuven.. + in CERN white paper “4. theme” Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  17. Bunched-beam laser spectroscopy: 44K Trends in Heavy Ion Physics Research, Dubna, 21-25 May E. Mane

  18. SC linac Max energy for different A/q : M. Pasini Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  19. Some extrapolated yields Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  20. European Roadmap for RIB facilities EU EURISOL Design Study 107 € Jan 07 agreement – Complimentarity; Collaboration SPL (CERN) decision 108 € ESFRI list EU FAIR Design Study 109 € P. Butler Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  21. Beta-Beams 2 x 1013 ions/s 6He and 18Ne Trends in Heavy Ion Physics Research, Dubna, 21-25 May

  22. Thanks to: The ISOLDE Physics Group The ISOLDE Technical Group The ISOLDE Collaboration Peter Butler Mats Lindroos Mark Huyse http://hie-isolde.web.cern.ch/HIE-ISOLDE/ HIE-ISOLDE: the technical options - CERN-2006-013 HIE-ISOLDE: the scientific opportunities - CERN-2007-008 Trends in Heavy Ion Physics Research, Dubna, 21-25 May

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