Post on 21-Jan-2016
Technical report for ISOLDEINTC 19 May 2007
Mats Lindroos
Mats Lindroos
Outline
• Shutdown work– Planning– Ventilation– Water cooling system for Front-Ends– Front-End 6– REX-ISOLDE
• HIE-ISOLDE– Where are we?
Mats Lindroos
Shutdown planning
Mats Lindroos
Start-up period
Mats Lindroos
5
Major changes for 2008 Release of activated air
HRS GPS0.00E+00
5.00E+02
1.00E+03
1.50E+03
2.00E+03
2.50E+03
chim
ney
mo
nit
or
kBq
/m3
April to December
2007 2006 2005
Radiation monitor PMVG170C showing higher levels compared to 2 previous years
Proton beam current to GPS limited to 1µA (norm. 2µA)
Modification of Ventilation System
• In order to reduce the activated air emissions encountered during 2007, the ventilation system has been reversed and measures have been taken to improve the air-tightness of the area.
• Tests to be carried out over the next few weeks.
GPS HRS
GPS HRS
Actual situation
Modification
Target Cooling Water Panel
• Orphan• Dependant on
vacuum controls. The failure of one affects the other
• Difficult to access (inside primary zone)
• No spares
• Maintained by ST-CV• Completely
independent from vacuum sequence
• Easily accessible during operation.
• Spares available• Easy to operate user
interface
Before >
< After
Aluminium oxide blocking pneumatic systems
9
‘Meyrin’ compressed
air
Isolde facility
Compressed air system: Broken
filter inside one of the air dryer tanks
Low energy shutdown works: main projects
REX- ISOLDE
* REXTRAP - exchanged insulators etc at internal structure
Done. Some discharges when starting up, but conditioning helps.
• REXTRAP - enlarge the internal differential pumping diaphragms Partially done. Preliminary test show an efficiency >60% Followed up with dedicated radioactive ion deposition test, e.g. 42K
* REXTRAP - adjust and consolidate the RF excitation electronics Done, but still not possible to avoid antiresonance for all masses. -> adjust the amplifier for the desired mass range -> wait for a new version in connection with the REXTRAP upgrade
* REXTRAP - proposal for complete trap consolidation
Awaiting AB management decision
* REXEBIS – find the reason for the LHe filling blockage Inspected inside. No blockage found.
* REXEBIS – identify the reason for large N2 peaks Much time invested. Gate valve exchanged. Peaks smaller but still present.
REX linac shutdown works
• IHS cavity stability above 50kWCoupling loop dismounted and cleaned, checked cavity adaptation, loop gain… -> Problem not fully solved, still too many interruption due to reflected power
• Linac water cooling circuits consolidationNew interlocks, replacement of damaged pipes, maintenance of IHS closed circuit
• Amplifier cavities and RF tubes cleaningLong time without maintenance, insufficient air filtration
• RF room ventilationChanged to a close circuit ventilationUnfortunately the cooling unit is not adapted to this mode of operation -> Need a new cooling unit
• Replacement of magnetic steerersA project has been started for the replacement of the linac steerers during shutdown 2008-09
REX- ISOLDE
REX status
The whole REX machine is up running (diffciult startup as always)
Tricky 9C(O) and 10C(O) beams first experiment -> After some struggle 10C beam could be accelerated
Linac well setup – scaleable:- A beam of 10C was delivered at 2.9MeV/u during the first run- Sstripping foils were used 10C3+ -> 10C6+ (80% efficiency / background free)
1. Test mass separation inside the trap Improve the REX decay analyses prog. + verify this with tests
2. Beam (cw and pulsed) from RFQ cooler into REX dedicated tests necessary (no time during the startup)
3. 35Ar/35Cl suppression postponedno time before the C(O) runafter the run the target ion source broke
4. Emittance measurements for linac started
5. Injection of Minimono (1+ ECRIS) into REXTRAP
REX- ISOLDE
Diploma student A. Gustafsson
Pre
sen
t st
atu
sIm
med
iate
d
evel
opm
ent
pro
ject
s
FE6 and Off-line
• Vacuum equipment installed
• Extensive testing of beam optics
• Preparation for installation– Specifications for software
and hardware under way
• Beam energy measurement device installed for the precise measurement (+/- 0.1V) of secondary beams.
• Rapid gas leak valve integrated into off line to simulate effusion processes through target and ion source systems
Upgrade of RILIS lasers at ISOLDE
Two dye lasers were applied at 1st step of excitation - x 2.2
More power could be delivered to HRS target at the 2nd step of excitation
Ga ion beam has been produced with the SSL
Diode Pumped Solid State Nd:YAG Lasers as replacement of Copper Vapor Lasers:
Green Beams 45 W @ 511 nm
Yellow Beams 35 W @ 578 nm
CVL
Green Beams 92 W @ 532 nm
UV Beam 18 W @ 355 nm
IR Beam 45 W @ 1064 nm
SSL15 ns @ 11 kHz 8 ns @ 10 kHz
CVL 2
DL2
11
SSL 2
DL2
11
46%54%46%
Improvement of ionization efficiency by SSL :
And CVLs are still available for runs …
Total all parts of project
Staff MaterialFTE kCHF
1a LINAC prototyping and cryo design 5.5 4251b LINAC 3.0 - 5.5 MeV/u 25.5 6,8881c Linac 5.5 - 10 MeV/u 19.0 3,3501d LINAC lower energies 9.5 1,3251e Beam lines for experimental area 1.0 5002 REX trap and charge breeder 12.1 2,2383 TS consolidation 2,000
REX UPGRADE 72.6 16,7264 Targets & Front-ends 25.8 8,1005 PSB 900 ms 9.0 2,000
PROTON DRIVER BEAM 34.8 10,1006 RFQ cooler 0.0 5007 RILIS upgrade 0.0 2,4008 High-charge state beams 1.1 8009 New HRS 0.8 1,100
BEAM QUALITY 1.9 4,80010 Radiation protection consolidation 1.0 75011 Vacuum consolidation 8.5 2,408
CONSOLIDATION 9.5 3,158TOTAL 118.8 34,784Total MaterialTotal Personnel
Swiss Francs
Still required
34,78410,000
HIE-ISOLDE: Where are we?
• External grant from Belgium– 1 engineer post – Matteo– 1.3 MCHF for R&D on SC linac
• Second grant from Belgium approved for both physics programme and SC linac construction for HIE-ISOLDE
– 2.7 MCHF (540 kCHF per year for 5 years) for the SC linac construction
• WP in EUCARD proposal for R&D on thin film techniques– 1.5 MCHF in total budget (30% from EU)– 500 kCHF for HIE-ISOLDE relevant items (30% external)– Partners should be: IPJ-Polen, CI, LNL-INFN, IN2P3-IPNO, DESY
• Proposal in the UK to finance SC linac development and construction• RFQ cooler WP and RILIS WP financed and (almost) completed• Statement of Interest for proposal in the US to develop new high
intenity EBIS/T for HIE-ISOLDE, FRIB, HRIBF and ISAC-II– Support letter ISC and ISOLDE
• UK Phd Student and Post-doc starting at ISOLDE in July • Pre-study of new remote handling system in Finland, Univ. of Tampere• Discussions with CERN Mgt on CERN contribution.
HIE-ISOLDE: Where are we?
Staff Material Staff MaterialFTE kCHF FTE kCHF
1a LINAC prototyping and cryo design 0.0 425 5.51b LINAC 3.0 - 5.5 MeV/u 25.5 2,416 4,4721c Linac 5.5 - 10 MeV/u 19.0 3,3501d LINAC lower energies 9.5 1,3251e Beam lines for experimental area 1.0 0 5002 REX trap and charge breeder 12.1 2,2383 TS consolidation 2,000
REX UPGRADE 67.1 11,754 5.5 4,9724 Targets & Front-ends 25.8 8,040 605 PSB 900 ms 9.0 2,000
PROTON DRIVER BEAM 34.8 10,040 0.0 606 RFQ cooler 0.0 0 5007 RILIS upgrade 0.0 0 2,4008 High-charge state beams 1.1 8009 New HRS 0.8 1,100
BEAM QUALITY 1.9 1,900 0.0 2,90010 Radiation protection consolidation 1.0 75011 Vacuum consolidation 8.5 2,408
CONSOLIDATION 9.5 3,158 0.0 0TOTAL 113.3 26,852 5.5 7,932Total MaterialTotal PersonnelPHASE I 27.5 5,591 5.5 7,932Total Material Phase ITotal Personnel Phase I 2,778
Swiss Francs
Still required Received
34,78410,000
13,523
HIE-ISOLDE R&D status
Work has started on the main work packages, namely Cavity RF design, cavity manufacturing, cryomodule design, cryogenic system design and beam dynamics. Preparatory work on other work packages has started, we are still in line for the delivery of the Technical Design Report by end 2009.
High QWR with beam port corrected for steering effect
Sputtering chamber