1. L.M. Fraile, CERN PH/IS ISOLDE scientific coordinator’s report INTC meeting, 15 February 2007 ISOLDE scientific coordinator’s report INTC meeting, 15 February 2007 Impact of technical issues Running statistics 2006 Report from SGUI Planning for 2007

2. INTC 15 February 2007 L.M. Fraile Failures 2006 (affecting Physics): Startup Switchyard was blocked → deflector at GHM bent when repaired Line polarity left inverted from 2005 Tape station not working Compressed air → The white powder phantom → Problematic target changes (i.e. UC x -W 322, 10 May) Broken CeO HP 319 target + other (HV) CONSECUENCES IS427cancelled 11 shift lost rescheduled IS401/442modified physics aim+ lost 2.5 shifts IS358 no physics outcome+ lost 4.5 shifts[also RILIS] IS383/428cancelled17 rescheduled IS413little physics outcome5[also power cuts] IS442modified collections3

3. INTC 15 February 2007 L.M. Fraile Failures 2006: CERN Power cuts 15 May ~ 6:40 16 May ~ 14:00 Ventilation PLC problem already appeared (security chain) GPS survived / HRS (UC W 272) affected (IS413/IS442) 17 Jun ~ 2:40 22 Jun ~ 1:40 23 Jun, ventilation problem (security chain) Delays, shortened runs 29 Jul ~ 7:45 Again VENTILATION controllers (PLCs) It had happened before (see above), took until 4 Aug to repair IS397 + REX-MD cancelled IS413 cut short IS434 (15 shifts) cancelled + IS368 not successful

4. INTC 15 February 2007 L.M. Fraile Main failures 2006: Beam issues et al. Beam issues → Beam sent to ISOLDE without request, 19 Jun 2006 Seen by contaminants on stable beam tuning → Focused beam on Ti W 323 target [IS437] → NORM beam (not staggered) onto Pb HP 256 [IS360/IS448 saved!] → Steering due to MBL201 losses / beam on converter UC W n q 338, beam on target [IS411] Protons hitting the target and not converter, UC W n q 330 [IS411] BTY.QDE209 leak → 10 days to repair IS397 cancelled + REX-MD (simultaneous EBIS cathode problem) Delays IS393/IS413 and following week Robot (target handling) → Delays, UC W n 330 IS413 cut short, IS393 affected (ended by power cut) Other: HV, target heating…

5. INTC 15 February 2007 L.M. Fraile Request for Schedule 2006 Requested = 481 shifts → Schedule allows up to 350 Maximum 10 UC x targets (+ developments) → Requests ~ 265 shifts RILIS operation → Requests for 2006 amount to 230 experiment shifts → More than 2000 hours on line (exp. + dev. + prep.) REX-ISOLDE → Beam requests = 174 shifts Operations limited Target development

6. INTC 15 February 2007 L.M. Fraile ISOLDE beam time summary 2006 ISOLDE delivered 350.5 RIB shifts → 280 (80%) experiments INTC → 70.5 (20%) other Standard target check + TISD + REX-MD Coordinators reserve: recovery, LoIs → 34 research projects (“experiments”) → Integrated # protons = 7.55E+19 Indicator… (cf. Ti target) Far from 2E+20 radioprotection average limit → flexibility required → Recovered from the middle of the year → Running for 214 days (includes extension) 183 in 2005

7. INTC 15 February 2007 L.M. Fraile Other conditions Limit on average p intensity → 2006: 7.5E19 protons Far from the 2E20 limit PSB → ISOLDE → Beam issues → VISTAR PS inflector zone → Decouple from PSB Security chains for ISOLDE areas → Reset key in CCC Prevessin Response of controls Shipping of radioactive samples Frequent changes of supercycles

8. INTC 15 February 2007 L.M. Fraile ISOLDE beam time summary 2006

9. INTC 15 February 2007 L.M. Fraile ISOLDE shift distribution 2006

10. INTC 15 February 2007 L.M. Fraile Shift distribution 1998-2006 Number of shifts

11. INTC 15 February 2007 L.M. Fraile Key resources: targets Actinide targets → 196 shifts (out of 350.5) [56%] → 11 new units (includes prototypes) → Fabrication for 2007 started

12. INTC 15 February 2007 L.M. Fraile Key resources: RILIS 164 total RIB shifts → 146.5 shifts for INTC shifts 2132 hours for online work → includes setup, etc → 120 h offline (development Hg [Po], offline Cu) 20 IS projects + 1 LoI Beams: Mg, Cu, Ag, Mn, Zn, Cd, Sb, Sn, Po, Be

13. INTC 15 February 2007 L.M. Fraile REX-ISOLDE 2006 114 RIB shifts delivered to experiments → 9 more RIB shifts for development → Stable beam, setup time … → 11 experiments Allocated time for REX-MD → Optimized setup/tuning by REX machine supervisors E ≤ 2.9 MeV/u → Limited energy [9-gap] → E=3.15 MeV/u ( 8 Li) Efficiency > 5% average → Range 2.8% - 9.6% Reliable → Good success rate

14. INTC 15 February 2007 L.M. Fraile REX-ISOLDE 2002-2006

15. INTC 15 February 2007 L.M. Fraile REX-ISOLDE 2006 IS438: Elastic scattering and fusion studies in the reactions 10,11 Be+ 64 Zn (Catania) IS412: Towards the doubly magic 78 Ni (Leuven) IS411: B(E2) measurements around 132 Sn (Munich) IS418: Towards the doubly magic 100 Sn (CERN/Lund) IS435: Coulex of Cu isotopes, N=40 (CERN/Leuven) IS415: g-factors in Xe/Te (Bonn) IS446: Investigation of the 8 Li(d,p) 9 Li reaction at REX- ISOLDE (CERN) IS409: Fusion reactions with n-rich Mg (Köln) IS410: Single particle and collective effects in n-rich Mg (Heidelberg) IS444: Exploring halo effects in scattering of 11 Be on heavy targets at REX (Madrid/Sevilla)

16. INTC 15 February 2007 L.M. Fraile REX ISOLDE 2006 New REX radioactive beams for Physics in 2006 → 8 Li 3+ → 10 Be 3+ → 29,31 Mg 9+ → 67,71,73 Cu 19+,20+ → 80 Zn 21+ → 144 Xe 34+ 45 radioactive isotopes of 17 elements → 5 years after 1 st post-accelerated RIB (30 Oct 2001) Charge breeding of heavy elements successful Other developments

17. INTC 15 February 2007 L.M. Fraile Standing group for the upgrade of ISOLDE Target priorities First priority: approved experiments Second priority: letters of intent Third priority: research and development

18. INTC 15 February 2007 L.M. Fraile Priority 1 [Approved experiments] REX-ISOLDE 17 F IS424 LaF + /F + ongoing n-rich Ba IS411 BaF + EBIS problem 2006 n-rich Te IS411/IS415 Quartz/RILIS 11 Li IS399 Yield… Sr beams IS451 SrF + EBIS problem 2006 182-184 Hg IS452 Breeding/bckg Ni IS412 C coating low yields

19. INTC 15 February 2007 L.M. Fraile Priority 1 [Approved experiments] n-deficient Mg, 21 Mg → IS427 COLLAPS [ongoing: Ti, SiC yields vs. Na background] Br beams → IS431 NICOLE + I59 (decay) [ongoing: negative ion sources] 62 Ga → IS413 ISOLTRAP + IS406 TAGS [ongoing: TiO 2 -free ZrO 2, RILIS?] n-deficient Te beams → IS428 COMPLIS [ongoing: CeO + FEBIAD tested] MiniMono ECR source → IS445 (REX + decay), IS420 (decay), [IS413] [Offline tests] C beams → IS445 (REX + decay) [HfO target + MiniMono]

20. INTC 15 February 2007 L.M. Fraile Priority 2 [Letters of intent] Po beams → LoI I57 In source spectroscopy [RILIS, done 2006] Al beams ( 25 Al, 26m Al) → LoI I63 Astrophysics [SiC tested, AlF + ] Ge beams → LoI I58 REX-ISOLDE (GeS + ) [on hold]

21. INTC 15 February 2007 L.M. Fraile Priority 3 [R&D] LIST RILIS + suppression of alkalis [ongoing] Negative ion sources LaB 6, KENIS, new developments [ongoing] Studies of nanomaterials Systematic studies of actinide targets EURISOL Other studies

22. INTC 15 February 2007 L.M. Fraile Accelerator schedule 2007 Approved 29 Nov 06 ISOLDE dates 2007 → Protons start 16 Apr → Physics start 23 Apr → Protons stop 12 Nov i.e. 29 weeks for Physics Expected frequent changes of supercycles (as 2006)

23. INTC 15 February 2007 L.M. Fraile ISOLDE schedule 2007 Support restricted by LHC startup Limits in key resources → RILIS → UC x REX available end of May → Miniball ready for Physics ~25 June Schedule: → 580 RIB shifts left for approved experiments → New proposals and addenda INTC 15-16 Feb 2007

24. INTC 15 February 2007 L.M. Fraile Some highlights 2006

25. INTC 15 February 2007 L.M. Fraile IS412: CoulEx of 80 Zn @ REX-ISOLDE 80 Zn @ REX-ISOLDE → 4.5 days stable data taking → RILIS on/off E(2 + ) and B(E2,2 + → 0 + ) [J. van de Walle et al.]

26. INTC 15 February 2007 L.M. Fraile IS435: CoulEx of Cu isotopes I. Stefanescu et al. 71 Cu (1/2 - ) 5/2 - 120 Sn DC for A=71 104 Pd 7/2 - 71 Cu 71 Ga (1/2 - ) 454 keV DC for A=71 (3/2 - ) (5/2 - ) (1/2 - ) (7/2 - ) 71 Cu 42 454 534 981 1190 (  f 7/2 ) -1  p 3/2  2 + ( 70 Ni) new [I. Stefanescu et al.]

27. INTC 15 February 2007 L.M. Fraile IS441: ATD in Sn region Very pure Sn beam newly extracted as Sn 34 S + molecule 134 Sn, 136 Sn decays studied → 135 Sb structure New level at 523 keV, T 1/2 = 1.2 ns B(E2;1/2 + → 5/2 + ) ~ 14 W.u. (collective) 136 Te: B(E2, 2 + → 0 + ) 5231/2+ Ge-1 Beta BaF 2 -1 BaF 2 -2 ISOLDE beam [H. Mach et al.]

28. INTC 15 February 2007 L.M. Fraile ZXZX A Z-1 Y A e+e+ + not produced at ISOLDE 20 cm z (mm) 4 He e+e+ e+e+ ZXZX A ZXZX A e+e+ ZXZX A Z-1 Y A A A ZXZX A e+e+ ZXZX A e+e+ [A. Herlert et al.] IS413: in-trap decay mass spectroscopy Preparation trap 61 Fe +

29. INTC 15 February 2007 L.M. Fraile 38 Ca simulation ISOLDE molecular 38 Ca 19 F + beam Break-up and cleaning of daughter 38m K at REXTRAP → pure 38 Ca source Half-life measurement after REXTRAP Simultaneous mass measurement at ISOLTRAP (beam sharing) [B. Blank et al.] β-decay half-life and Q β value of the superallowed 0 + →0 + β-decay of 38 Ca IS437: Trap-assisted decay spectroscopy at REXTRAP

30. INTC 15 February 2007 L.M. Fraile IS427 - COLLAPS: 33 Mg [D. Yordanov, G. Neyens et al.] Preliminary results g = - 0.4971(4)I = 3/2 NMR 33 Mg, MgO A/g ≈ const HFS 33 Mg NMR |A| (I+1/2) ≈ -AI/2>0 ≈ A (I+1)/2<0 |A| (I+1/2)

31. INTC 15 February 2007 L.M. Fraile IS448:Pb(II) and Hg(II) binding to de novo designed proteins [L. Hemingssen et al.] 199mHg-perturbed angular correlation of γ-rays (PAC) spectroscopy Fundamental knowledge of Pb(II) and Hg(II) interaction with proteins Structure and dynamics at de novo designed metal ion binding sites Clues to the molecular basis of toxicity of these heavy metals pH 8.7 pH 7.9 pH 6.5 pH Titration of Hg-TRIL9C. Fourier transform of the PAC data (thin line) and of the fit (bold faced line). For all three experiments the TRIL9C:Hg(II) ratio was 12:1 (excess of peptide). Transition from linear [HgS2] complex (pH 6.5) to trigonal [HgS3]-complex pH is a regulatory switch