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Future for (Stopped) RISING .....the road to DESPEC.

Future for (Stopped) RISING .....the road to DESPEC. D. Rudolph et al., RISING, Feb/Mar'06. Stopped Rising Array @ GSI: 15 x 7 element CLUSTERs Photopeak efficiency ~11% at 1.3 MeV....best array in the world for such studies....bar none. γγ Coincidence Spectra. D. Rudolph.

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Future for (Stopped) RISING .....the road to DESPEC.

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  1. Future for (Stopped) RISING .....the road to DESPEC.

  2. D. Rudolph et al., RISING, Feb/Mar'06

  3. Stopped Rising Array @ GSI: 15 x 7 element CLUSTERs Photopeak efficiency ~11% at 1.3 MeV....best array in the world for such studies....bar none.

  4. γγ Coincidence Spectra D. Rudolph

  5. Decay Scheme of 54Ni D. Rudolph

  6. 131In 130Cd Fission and fragmentation studies in A=130 region Many new isomers New systematics Isomeric ratios from two reaction mechanism

  7. 100Sn vs 132Sn H. Grawe: N=50 TBME scaled by (88/132)1/3 to N=82 SPE from99In and 131In, respectively

  8. Cd 86Tc 88Zr Ga S. Pietri et al., RISING data 107Ag beam

  9. Possible Physics to be addressed by Next (Isomer) Campaign? • 238U beam.... • 128Pd82 (96Pd50 mirror.... holes in N=82) • 202Os126....(holes in N=126) • Neutron-rich ~Pb (212-214Pb).... • 190W-170Dy (K-isomerism as a probe of def.) • Highest spins in fragmentation (> 144Tb).... • 208Pb at high spins? I ~ 30 hbar? • Fission fragment studies, shape evolution (N~60-70...Gary Simpson....) • Other beams.. • Isospin Sym. Tz=-2, 52Ni24:52Cr28 ....(Dirk Rudolph...) • N=Z ~100Sn (Bob Wadsworth, Magda Gorska...)

  10. Highest angular momentum states observed in fragmentation March 2006: 148Tb I=27ћ 147Gd I=49/2ћ Angular momentum 148Tb year of publication • I nucleus published year and first author: • 19/2 43Sc 1994 W-D Schmidt-Ott et al. • 54Fe 1995 R. Grzywacz et al. • 25/2 205Tl, 205Pb 1998 M. Pfutzner et al. • 35/2 175Hf, 179W, 181Re 2002 M. Pfutzner et al. • 43/2 215Ra 2006 Zs. Podolyák et al. • 27 148Tb 2007(?) E. Werner-Malento, Zs. Podolyák et al.

  11. Open questions in nuclear physics limit of existence, neutron skins, change in the shell structure, weak binding effects, nucleosynthesis …

  12. Far future: FAIR yields

  13. Future βdecay: RISING active stopper (2007) (J.Benlliure, P. Regan et al.) isomeric decay: CERN-ISOLDE

  14. Advanced GAmma Tracking Array High photo-peak efficiency Good angular resolution <1degree FWHM=10 keV at β=50% = 5 keV at β=20% Ideal for high velocity beams

  15. Grant success: Advanced Implantation Detector Array (AIDA) Part of UK contribution to FAIR EPSRC grant to: Universities of Edinburgh and Liverpool Daresbury and Rutherford Grant award £2.25M 4 year grant DESPEC ‘Active Stopper’ (AIDA) funded in the UK AIDA Si strip detectors ASIC readout Microelectronics Electronics and DAQ

  16. Stopped Rising Array @ GSI: 15 x 7 element CLUSTERs Photopeak efficiency ~11% at 1.3 MeV...next array must be even better (....for Stopped Beams.)

  17. Members of the DESPEC Ge array working group Meetings 1) Daresbury Laboratory UK 2) University of Liverpool UK 3) University of Surrey UK 4) UAM Madrid Spain 5) Universidad de Salamanca Spain 6) IFIC Valencia Spain   7) GSI Darmstadt Germany 8) Universit ät zu Köln Germany 9) IFIN-HH Bucharest Romania 10) University of Camerino Italy 11) University of Jyvaskyla Finland 12) University of Sofia Bulgaria 13) Royal Inst. of Tech., Stockholm Sweden 14) IReS Strasbourg France • 11 February, 2005 GSI, Germany • 7 April, 2005 Surrey, UK • 4 November, 2005 Madrid, Spain • 22 February, 2006 GSI, Germany http://www.ft.uam.es/Nuclear/Nuc_Exp_Inv_DESPEC_home.htm DESPEC ‘active stopper’ funded in last round (Liv. + Edin. + DL. + RAL)

  18. Alternative: array of 6/8 Clover detectors DESPEC gamma-ray array major UK Grant to be: Surrey, Liverpool, CLRC, Daresbury, York, Brighton, Manchester, Paisley….

  19. THE question ...... Array of stacks of seg- mented planar Ge detectors Array of CLOVER detectors ? • prototype • simulations

  20. DESPEC (DEcay SPECtrocsopy) γ-ray tracking cluster Stanislav Tashenov GSI, Darmstadt

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