Trends in Heavy Ion Physics Research, Dubna, May Present and future physics possibilities at ISOLDE Karsten Riisager PH Department, CERN

Trends in Heavy Ion Physics Research, Dubna, May

Trends in Heavy Ion Physics Research, Dubna, May RIBs for 40 years40 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, May ISOLDE yields, 2006 ISOLDE target group M. Turrion

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

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

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

Trends in Heavy Ion Physics Research, Dubna, May  68,m Cu ( Sn (2.3 mg/cm 2 )  70 Cu ( Sn (2.3 mg/cm 2 ) 6 - (3 - ) 4 - (5 - ) 0 T 1/2 = 44.5 s 101 T 1/2 = 33 s (M1) No Doppler Corr. Doppler Corr. for A=70 85 T 1/2 = 7.84 ns 1+1+ (2 + ) (3 - ) 722 T 1/2 = 3.75 min (5 - ) 0 T 1/2 = 31.1 s (M1) < T 1/2 < 4 ns E2 Post-accelerated isomeric beams Coulomb excitation of 68,70 Cu 242 T 1/2 = 6.6 s 1 + I Stefanescu et al, PRL 98 (2007)

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

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

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

Trends in Heavy Ion Physics Research, Dubna, May An example: Mg 2 nd 0 + in 30 Mg at 1788 keV, weak mixing – Schwerdtfeger at Dec 07 ISOLDE workshop Schwerdtfeger Coulex of ( 30,32 Mg and) 31 Mg – Reiter doReiter Transfer d( 30 Mg, 31 Mg)p – Bildstein doBildstein Magnetic moments 31,33 Mg, COLLAPS – Yordanov et al, PRL 99 (2007) 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, May Decay ISOLDE previous IS414 results: H. Mach et al.

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

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

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

Trends in Heavy Ion Physics Research, Dubna, May Some extrapolated yields

Trends in Heavy Ion Physics Research, Dubna, May European Roadmap for RIB facilities Jan 07 agreement – Complimentarity; Collaboration EU EURISOL Design Study ESFRI list 10 7 € 10 8 € 10 9 € EU FAIR Design Study SPL (CERN) decision P. Butler

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

Trends in Heavy Ion Physics Research, Dubna, May Thanks to: The ISOLDE Physics Group The ISOLDE Technical Group The ISOLDE Collaboration Peter Butler Mats Lindroos Mark Huyse HIE-ISOLDE: the technical options - CERN HIE-ISOLDE: the scientific opportunities - CERN