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L.M. Fraile, CERN PH/IS. Impact of technical issues Running statistics 2006 Report from SGUI Planning for 2007. ISOLDE scientific coordinator’s report INTC meeting, 15 February 2007. Failures 2006 (affecting Physics): Startup. Switchyard was blocked deflector at GHM bent when repaired - PowerPoint PPT Presentation
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L.M. Fraile, CERN PH/ISL.M. Fraile, CERN PH/IS
ISOLDE scientific coordinator’s reportISOLDE scientific coordinator’s reportINTC meeting, 15 February 2007
ISOLDE scientific coordinator’s reportISOLDE scientific coordinator’s reportINTC meeting, 15 February 2007
Impact of technical issuesRunning statistics 2006Report from SGUIPlanning for 2007
L.M. Fraile INTC 15 February 2007
Failures 2006 (affecting Physics): Failures 2006 (affecting Physics): StartupStartup
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. UCx-W 322, 10 May)
Broken CeO HP 319 target + other (HV)
CONSECUENCESIS427 cancelled 11 shift lost rescheduledIS401/442 modified physics aim + lost 2.5 shiftsIS358 no physics outcome + lost 4.5 shifts [also RILIS]IS383/428 cancelled 17 rescheduledIS413 little physics outcome 5 [also power cuts]IS442 modified collections 3
L.M. Fraile INTC 15 February 2007
Failures 2006: Failures 2006: CERN Power cutsCERN 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 ~ 7:45Again 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
L.M. Fraile INTC 15 February 2007
Main failures 2006: Main failures 2006: Beam issues Beam issues et al.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…
L.M. Fraile INTC 15 February 2007
Request for Schedule 2006Request for Schedule 2006
Requested = 481 shifts→ Schedule allows up to 350
Maximum 10 UCx 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
L.M. Fraile INTC 15 February 2007
ISOLDE beam time summary 2006ISOLDE 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
L.M. Fraile INTC 15 February 2007
ISOLDE shift distribution
0
50
100
150
200
250
300
350
400
2000 2001 2002 2003 2004 2005 2006
Nu
mb
er o
f sh
ifts
0.0
0.5
1.0
1.5
2.0
2.5
Sh
ifts
/da
y
Delivered shifts HRS shiftsGPS shifts Shifts per day
ISOLDE beam time summary 2006ISOLDE beam time summary 2006
L.M. Fraile INTC 15 February 2007
ISOLDE shift distribution 2006ISOLDE shift distribution 2006
Development experiments
1.7%
Target & IS development (+REX
MD)13.8%
Coordinator's reserve
6.3%
Biology and Medicine
0.4%
Particle and Astrophysics
3.7% Atomic Physics11.1%
Solid State Physics10.0%
Weak Interaction and Nuclear
Physics53.2%
L.M. Fraile INTC 15 February 2007
Shift distribution 1998-2006Shift distribution 1998-2006
0
20
40
60
80
100
120
140
160
180
200
Biology and Medicine
Particle and Astrophysics
Atomic Physics
Solid state physics
Weak Interaction andNuclear Physics
Num
ber
of s
hifts
L.M. Fraile INTC 15 February 2007
Key resources: targetsKey resources: targets
Target distribution 2006
UC/ThC 56%
CeO 4%
Ti 4%
SiC 3% Sn 3% Pb 2%
ZrO 1%TISD 1%
Ta 11%
LaC 6%
Nb 6%
MgO 4%
Actinide targets→ 196 shifts (out of 350.5) [56%]→ 11 new units (includes prototypes)
→ Fabrication for 2007 started
L.M. Fraile INTC 15 February 2007
Key resources: RILISKey resources: RILIS
RILIS % from INTC shifts 2006
Rest 48%
RILIS52%
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
L.M. Fraile INTC 15 February 2007
REX-ISOLDE 2006REX-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 (8Li)
Efficiency > 5% average→ Range 2.8% - 9.6%
Reliable→ Good success rate
REX % from INTC shifts 2006
Rest ISOLDE59%
REX41%
L.M. Fraile INTC 15 February 2007
REX-ISOLDE 2002-2006REX-ISOLDE 2002-2006
REX-ISOLDE RIB shift distribution
0
25
50
75
100
125
150
2002 2003 2004 2005 2006
Nu
mb
er o
f sh
ifts
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
REX-ISOLDE shiftsREX-ISOLDE shifts with MDPercentage of INTC shifts
L.M. Fraile INTC 15 February 2007
REX-ISOLDE 2006REX-ISOLDE 2006
IS438: Elastic scattering and fusion studies in the reactions 10,11Be+64Zn (Catania)
IS412: Towards the doubly magic 78Ni (Leuven)
IS411: B(E2) measurements around 132Sn (Munich)
IS418: Towards the doubly magic 100Sn(CERN/Lund)
IS435: Coulex of Cu isotopes, N=40 (CERN/Leuven)
IS415: g-factors in Xe/Te (Bonn)
IS446: Investigation of the 8Li(d,p)9Li 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 11Be on heavy targets at REX (Madrid/Sevilla)
L.M. Fraile INTC 15 February 2007
REX ISOLDE 2006REX ISOLDE 2006
New REX radioactive beams for Physics in 2006→ 8Li3+
→ 10Be3+
→ 29,31Mg9+
→ 67,71,73Cu19+,20+
→ 80Zn21+
→ 144Xe34+
45 radioactive isotopes of 17 elements→ 5 years after 1st post-accelerated RIB (30 Oct 2001)
Charge breeding of heavy elements successfulOther developments
L.M. Fraile INTC 15 February 2007
Standing group for the upgrade of ISOLDEStanding group for the upgrade of ISOLDE
Target priorities
First priority: approved experiments Second priority: letters of intent Third priority: research and development
L.M. Fraile INTC 15 February 2007
Priority 1 [Approved experiments]Priority 1 [Approved experiments]
REX-ISOLDE 17F IS424 LaF+/F+ ongoing
n-rich Ba IS411 BaF+ EBIS problem 2006
n-rich Te IS411/IS415 Quartz/RILIS
11Li IS399 Yield…
Sr beams IS451 SrF+ EBIS problem 2006
182-184Hg IS452 Breeding/bckg
Ni IS412 C coating low yields
L.M. Fraile INTC 15 February 2007
Priority 1 [Approved experiments]Priority 1 [Approved experiments]
n-deficient Mg, 21Mg→ IS427 COLLAPS [ongoing: Ti, SiC yields vs. Na background]
Br beams→ IS431 NICOLE + I59 (decay) [ongoing: negative ion sources]
62Ga→ IS413 ISOLTRAP + IS406 TAGS [ongoing: TiO2-free ZrO2,
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]
L.M. Fraile INTC 15 February 2007
Priority 2 [Letters of intent]Priority 2 [Letters of intent]
Po beams→ LoI I57 In source spectroscopy [RILIS, done 2006]
Al beams (25Al, 26mAl)→ LoI I63 Astrophysics [SiC tested, AlF+]
Ge beams→ LoI I58 REX-ISOLDE (GeS+) [on hold]
L.M. Fraile INTC 15 February 2007
Priority 3 [R&D]Priority 3 [R&D]
LISTRILIS + suppression of alkalis [ongoing]
Negative ion sourcesLaB6, KENIS, new developments [ongoing]
Studies of nanomaterialsSystematic studies of actinide targetsEURISOLOther studies
L.M. Fraile INTC 15 February 2007
Accelerator schedule 2007Accelerator 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)
L.M. Fraile INTC 15 February 2007
ISOLDE schedule 2007ISOLDE schedule 2007
Support restricted by LHC startup Limits in key resources
→ RILIS
→ UCx
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
L.M. Fraile INTC 15 February 2007
Some highlights 2006Some highlights 2006
L.M. Fraile INTC 15 February 2007
IS412: CoulEx of IS412: CoulEx of 8080Zn @ REX-ISOLDEZn @ REX-ISOLDE
80Zn @ REX-ISOLDE
→ 4.5 days stable data taking
→ RILIS on/off• E(2+) and B(E2,2+→ 0+)
[J. van de Walle et al.]
L.M. Fraile INTC 15 February 2007
IS435: CoulEx of Cu isotopesIS435: CoulEx of Cu isotopes
I. Stefanescu et al.
71Cu(1/2-)5/2-
120Sn
DC for A=71
104Pd
7/2-
71Cu
71Ga
(1/2-)454 keV
DC for A=71
(3/2-)
(5/2-)
(1/2-)
(7/2-)
(7/2-)
71Cu42
454
534
981
1190
(f7/2)-1
p3/22+ (70Ni)
new
[I. Stefanescu et al.]
L.M. Fraile INTC 15 February 2007
IS441: ATD in Sn regionIS441: ATD in Sn region
Very pure Sn beam newly extracted as Sn34S+ molecule 134Sn, 136Sn decays studied
→ 135Sb structure• New level at 523 keV, T1/2 = 1.2 ns
• B(E2;1/2+ → 5/2+) ~ 14 W.u. (collective) 136Te: B(E2, 2+ → 0+)
523 1/2+Ge-1Beta
BaF
2 -1
BaF
2-2
ISOLDE beam
[H. Mach et al.]
L.M. Fraile INTC 15 February 2007
ZXAZ-1YA e++
not producedat ISOLDE
100 mm
0
50
main electrodes
correction electrodes
Uz (V)
0
50
100
-50
-100
0 40 80
20 c
m
z (
mm
)
4He
4He
4He
4He
4He
4He
4He
4He
4He
4He
e+
e+
ZXA
ZXA
e+
ZXA
Z-1YA
Z-1YA
Z-1YA
ZXA
e+
ZXA
e+
[A. Herlert et al.]
IS413: in-trap decay mass spectroscopyIS413: in-trap decay mass spectroscopy
Preparation trap -6 -4 -2 0 2 4 6
240
260
280
300
320
mea
n T
OF
/ µ
s
(c - 1490700.3 Hz) / Hz
61Fe+
L.M. Fraile INTC 15 February 2007
38Ca simulation
• ISOLDE molecular 38Ca19F+ beam• Break-up and cleaning of daughter 38mK at REXTRAP → pure 38Ca source• Half-life measurement after REXTRAP• Simultaneous mass measurement at ISOLTRAP (beam sharing)
[B. Blank et al.]
β-decay half-life and Qβ value of the superallowed 0+→0+ β-decay of 38Ca
IS437: Trap-assisted decay spectroscopy at REXTRAPIS437: Trap-assisted decay spectroscopy at REXTRAP
L.M. Fraile INTC 15 February 2007
IS427 - COLLAPS: IS427 - COLLAPS: 3333MgMg
[D. Yordanov, G. Neyens et al.]
Preliminary results
g = - 0.4971(4) I = 3/2
NMR 33Mg, MgO
A/g ≈ const
HFS 33Mg
NMR
|A| (I+1/2) ≈ -AI/2>0≈ A (I+1)/2<0
|A| (I+1/2)
L.M. Fraile INTC 15 February 2007
IS448:Pb(II) and Hg(II) binding to de novo IS448:Pb(II) and Hg(II) binding to de novo designed proteinsdesigned 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