Present ISOLDE facility Aims of HIE-ISOLDE upgrade First steps towards HIE-ISOLDE

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1 The HIE-ISOLDE ISOLDE Project Alexander Herlert, CERN Present ISOLDE facility Aims of HIE-ISOLDE upgrade First steps towards HIE-ISOLDE Hirschegg Workshop 2008

2 B. Jonson s talk at the last ISOLDE workshop The first 40 years of physics at ISOLDE ISOLDE PHYSICS WORKSHOP AND USERS MEETING December 17-19, 2007

3 ISOL isotope separation on-line 40 years of operation continuous target and ion source development large variety of beams 350 RIB shifts per year two target stations (GPS/HRS)

4 H ISOLDE Table of elements ION SOURCE: + SURFACE Li Be hot PLASMA cooled B C N O F Ne Na Mg LASER Al Si P S Cl He Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

5 ISOLDE yields (2006) ~70 elements > 800 nuclides ISOLDE target group M. Turrion

6 Next generation RIB facilities in Europe ISOLDE THEORY GSI GANIL/SPIRAL GANIL B. Jonson

7 Aims of HIE-ISOLDE upgrade Increase of REX-ISOLDE energy Coulex for all RIB Transfer reactions Increase of primary beam intensity Higher RIB yields Improvement of secondary beam production efficiency for low energy and accelerated beams Improvement of beam purity Selectivity Improvement of secondary beam optical quality Reduction of phase space bunching

8 HIE-ISOLDE - in more detail REX-ISOLDE energy upgrade o o Upgrade in 3 stages: 5.5MeV/u and 10MeV/u as well as low energy capacity REX-TRAP and charge breeder upgrade ISOLDE proton driver beam-intensity upgrade o o o o Faster cycling of booster (900ms instead of 1.2s) Linac4 with upgrade from 2μA to 6μA New ISOLDE target stations New targets and target handling system ISOLDE RIB quality o o o o Smaller longitudinal and transverse emittance (ISCOOL) Higher mass resolution Target and ion source development, e.g. RILIS Higher charge states for selected users

10 REX-ISOLDE Uses 50% of ISOLDE running time has accelerated more than 43 different RIB * charge breeding * 1+ ions to n+ Optional stripper 9-GAP MHz MASS SEPARATOR 7-GAP MHz IH RFQ Rebuncher REXEBIS ISOLDE beam ISOLDE Primary target High energy driver beam Experiments 3.0 MeV/u 2.2 MeV/u 1.2 MeV/u * 6 cavities * 100 and 200 MHz, ~100 kw * 300 kev/u to 3 MeV/u 0.3 MeV/u 60 protons kev REXTRAP * longitudinal accumulation and bunching * transverse phase space cooling D. Voulot, F. Wenander

67,68,69,70,71,73 68 69 70 71 73 Cu 74,76,78,80 Zn 70 Se 88,92 Kr 96 Sr 122,124,126 Cd 108 In

11 The REX smörg rgåsbord (F. Wenander) 8,9,11 Li 10,11,12 Be 17 F 24,25,26,27,28,29 Na 28,29,30,31,32 Mg 68 Ni 67,68,69,70,71, Cu 74,76,78,80 Zn 70 Se 88,92 Kr 96 Sr 122,124,126 Cd 108 In 106,108,110 Sn 138,140,142, Xe 140,142,148 Ba 148 Pm 153 Sm 156 Eu 53 radioactive isotopes of 20 elements 184,186,188 Hg A selection of charge bred stable elements

12 REX efficiencies Al Efficiencies for beams 2006 Tot. eff. = Trap BTS EBIS Sep % Cd 5.0 7Li 238U A F. Wenander

13 The REX-ISOLDE - MINIBALL physics program: Towards the doubly magic 100 Sn (Lund, CERN) Mixed symmetry states in 88 Kr (Warsaw) Shape coexistence in 70 Se (Liverpool) g-factors in Te isotopes (Bonn) Stellar reaction 14 O(a,p) 17 F (Edinburgh) B(E2) measurements around 132 Sn (Munich) Towards the doubly magic 78 Ni (Leuven) N=40: Coulex of 68 Ni and 68,70,m,g Cu (CERN, Leuven) Island of inversion at N=20 (Heidelberg) K. Riisager (2005) Fusion reactions with neutron-rich nuclei (Köln) Neutron transfer reactions on 30 Mg (Darmstadt)

14 REX-ISOLDE upgrade M. Lindroos

15 Coulomb barrier for RIB HIE-ISOLDEISOLDE Current REX-ISOLDE K.Riisager

16 The present REX accelerator MHz Mhz M. Pasini

17 SC post-accelerator linac Design based on the solution adopted d for Spiral2 (A/q=3) SC linacs maintain beam quality for energy variable machines The maximum effective voltage can be applied to lighter masses so to have a higher final energy SC linacs provide the highest flexibility of operation, i.e. scaling and phase retuning for optimum energy/phase spread M. Pasini

18 Example of a cryo-module Courtesy of R. E. Laxdal M. Pasini

19 Layout stage 1 M. Pasini

20 Layout stage 2 (FULL)

21 Maximum energy for different A/q A/q = 3.0 A/q = 3.5 Beam en nergy (MeV V/u) 10 7 A/q = 4.0 A/q = Cavity number (#) K. Riisager

22 Schedule for REX-ISOLDE upgrade R&D on several issue of the SC linac has started Preparation work for cavity prototype is ongoing In order to make a better linac for the users feedback needed! A full TDR is planned to be released end of 2009 If funding will become available, construction of loaded cryo-modules will be completed in 2010 with installation and beam commissioning in M. Pasini

23 Estimated yields after REX-ISOLDE upgrade A. Gustaffson, Annex of CERN

24 ISCOOL - RFQ cooler and buncher for ISOLDE P. Delahaye, H. Franberg

ISCOOL preliminary results (test run) 90%

mrad 10pA of 133 Cs at 30KeV 70pA of 133 Cs

25 ISCOOL preliminary results (test run) 90% emittance: 8π mm.mrad 90% emittance 3.5π mm.mrad 10pA of 133 Cs at 30KeV 70pA of 133 Cs at 30KeV No buffer gas cooling He flow of 8X10-11 mbar l/s 10% transmission 70% transmission E. Mané, ISOLDE ISCOOL acceptance P. Delahaye, 20 < 40 H. Franberg The emittance at the exit of the RFQ is ~ independent of the incoming beam.

26 Installation at ISOLDE (2007) HRS 2 nd magnet Cooler To the experiments Switchyard H. Franberg

27 Installation at ISOLDE (2007) H. Franberg

28 Emittance measurements at ISOLDE H. Franberg

29 ISCOOL transmission H. Franberg

30 Bunched-beam laser spectroscopy: 44 K E. Mane

31 Resource needs Staff / person-year Budget / kchf Linac prototyping t Linac MeV/u Low energy stage Targets etc RFQ cooler RILIS upgrade Total K. Riisager

32 Thanks to: The ISOLDE Physics Group The ISOLDE Technical Group The ISOLDE Collaboration Karsten Riisager Mats Lindroos Peter Butler HIE-ISOLDE: ISOLDE: the technical options - CERN HIE-ISOLDE: the scientific opportunities - CERN

Atoms and the Periodic Table

Atoms and the Periodic Table Parts of the Atom Proton Found in the nucleus Number of protons defines the element Charge +1, mass 1 Parts of the Atom Neutron Found in the nucleus Stabilizes the nucleus