Technical Report for the INTC and ISCC Meetings 16 th November
2009 Richard Catherall EN-STI-RBS
Slide 2
Outline Operations throughout 2009 Targets REX Operation, Linac
consolidation RILIS Incidents Robot failure, operations Safety
Safety Audit New Procedures, Alara, DIMR 2009/2010 Shutdown
Planning HRS Front End #3 exchange Vacuum controls consolidation
News from support groups HIE- ISOLDE Status
Slide 3
Targets Target Production Production of 23 targets, 12 UC2-C.
VADIS Versatile Arc Discharge Ion Source. Operated successfully
during 2009 Adapted to different variants of ion sources/transfer
lines. Generated interest at other institutes BeO target with
n_converter for 6 He production Successful tests at the beginning
of the year GdB6 line for laser ionization of Nd See presentation
by T. Stora at ISOLDE Workshop. Target drawings updated to Catia
Models used for simulations and developments
Slide 4
REX campaign 2009 (1) 72 Kr MINIBALL Coulex/shape measu. 2.85
MeV/u 9-gap vacuum failure: run cancelled (2) 94,96 Kr MINIBALL
Coulex 2.85 MeV/u Isolde vacuum failure half way through the run
(3) 62 Mn/Fe MINIBALL Coulex 2.86 MeV/u -> Fe isotopes produced
by in-trap decay of Mn PSB problems + linac RF (24h stop) (4) 138
Xe MINIBALL Coulex/g-factor meas. 2.87 MeV/u (5) 29,30 Na MINIBALL
Coulex 2.85 MeV/u (6) 200 Po MINIBALL Coulex/shape measu. 2.85
MeV/u -> Heavy beam 5% low energy eff. (7) 107,109 Sn MINIBALL
Coulex energy 2.85 MeV/u -> long run: 10 days (8) 11 Be Transfer
reactions at MINIBALL 2.86 MeV/u -> stripping foils +
isotopically pure buffer gas Cathode failure during setup (9) 66 Ni
Transfer reactions at MINIBALL 2.9 MeV/u -> long run: 10 days *
A number of failures: one run cancelled several runs hampered by
problems * Despite all problems we managed to deliver beams to
(almost) all users * Some promising results: 200 Po, in-trap decay,
transfer reaction of 66 Ni Courtesy of D. Voulot & F.
Wenander
Slide 5
REXTRAP control system upgrade Now foreseen for 2010-2011
shutdown All groups agree; detailed specification discussions
ongoing PAM - new PicoAmpere Meter for REXTRAP tested In-house
production by BE-BI Variable integration time, noise level few 100
fA, very promising To be implemented with the REXTRAP upgrade REX
separator shielding to WITCH magnetic field Tested beam transport
and A/q-scaling with B-field on transport can work for limited
B-field with large steering A/q-scaling does not work => WITCH
magnet should not be energized while REX is setting up or
delivering radioactive beam Mass resolution tests finished + new
in-trap decay results See D. Voulots talk at the ISOLDE workshop
REX-Low energy Courtesy of D. Voulot & F. Wenander
Slide 6
REX - Linac consolidation I Linac RF cooling and ventilation
New ventilation for the RF room + Modification of RF amplifier
(water cooling with heat exchangers) -> improve temperature
stability + cleanliness -> longer RF tube lifetime
(25kCHF/piece) Linac shielding Construction of shielding tunnel
around the linac -> remove lead boxes on cavities -> faster
and easier access to equipment -> less X-ray background at
Miniball Courtesy of D. Voulot & F. Wenander
Slide 7
Linac consolidation II Beam instrumentation controls Replace
old control system (RS485, MS Visual Basic Windows based system)
with control server based on VME crate + dedicated VME cards ->
CERN standard (piquet support, easier to maintain) -> modular
system (possibility of extension and modifications) New tuner
mechanics for the 7-gaps Improve reliability and stability ->
less RF interruptions -> under construction (maybe installed
next year) Courtesy of D. Voulot & F. Wenander
Slide 8
Polarized beams Beta-NMR setup from HMI Berlin Now under
installation after REX Preliminary installed after 2 nd beam-line
magnet sample chamber scintillators, light guides and PM tubes
vacuum system electronics beam-line quadrupole magnet Tests
foreseen for June 2010 Mobile Tilted Foil Setup at 2 nd beam line
Stepper motor operational for foil inclination/rotation New larger
foils arrived (40x12 mm2) Initial test scheduled for week 48 Coulex
of stable polarized 21Ne Use Miniball particle and gamma detectors
Courtesy of D. Voulot & F. Wenander
Slide 9
New Nd:YAG lasers at ISOLDE RILIS Copper Vapor Lasers are
replaced by Diode Pumped Solid State Nd:YAG Lasers Laser generates
3 beams at 10 kHz: Main green beam 532nm, 70-80 W, 8 ns Residual
green beam 532 nm, 12-28 W, 9 ns UV beam - 355 nm, 18-20 W, 11 ns
Main green beam Residual green beam UV beam Two lasers are
available: one in use, second as a backup Courtesy of V.
Fedosseev
Slide 10
RILIS operation in 1994-2009 2143 h - total 1994 h - on-line In
2009 Nd:YAG lasers have been used for ALL 14 RILIS runs Be, Ga, Ag,
Nd, Po, Mn, Mg, Po, Sn, Mg, Mn, Be, Zn, Ni Laser ON time in 2009:
Courtesy of V. Fedosseev
Slide 11
A new RILIS scheme for manganese - LARIS result Replacement of
the scheme which uses the CVL green beam. Fortuitous Auto-ionizing
transition at CVL wavelength Fortuitous Auto-ionizing transition at
CVL wavelength Outcome of RIS study of Mn at LARIS: Many new
auto-ionizing states found Various promising Nd:YAG based schemes
tested New scheme applied at RILIS Efficiency > 8 % Outcome of
RIS study of Mn at LARIS: Many new auto-ionizing states found
Various promising Nd:YAG based schemes tested New scheme applied at
RILIS Efficiency > 8 % AIS search at LARIS Courtesy of V.
Fedosseev
Slide 12
Correct target pick upTarget #407 failed pick-up Robot
Incidents HRS Robot failed to pick up target correctly and became
jammed at Front End. This after failing 2 weeks earlier. Human
intervention required to retrieve situation. High collective and
individual dose for participants. The failure, due to the robot
incorrectly pulling the target to its pre- defined position was
identified and correctedbut at a cost.
Slide 13
GPS a separate incident Door #3 Shelf 1 Shelf 2 Shelf 3 Left
1Right 2 Pre-programmed pick and place cycle Pre-defined locations
E.g. Take target from Front End to door position 322 Incident
occurred because 321 coordinates were saved as position 322. Human
error? Overwritten valuesSave as!! Program manipulation error,
software? Action: Do not use this shelf position this year. Test
other shelf positions without target before use. Re-program robot
correctly during next shutdown.
Slide 14
Operation - Incidents GPS.FC490 Bent due to collision with
deflector plate. Interlocks overridden? Beam losses in BTY
line/protons on converter Caused a reduction in p-beam intensity
during Ag run in May/June. Vacuum control problems including RFQ
vacuum Initiated by CERN-wide power cuts Water in the hall
Condensation in the air conditioning equipment situated above the
control room. Excessive sparking at FEs Dehumidifier fuse Including
dirty extraction electrode tip. HRS.FC20 isolated because of
impossibility to move it. Failure to remove target #415 from HRS
FE#3 last week. Nmr resets on HRS magnets Failure of plcs for
target and ion source power supplies Including 24V power supply
failures Linac 2 vacuum leak Repair of septa magnet in PS
Slide 15
Operations Despite all the problems, an overall successful year
for physics at ISOLDE. Thanks to the contributions of all the
support groups involved More support from other groups: BE-CO,
TE-MSC, EN-ICE, EN-MME, PH-ADO and all those boarding the
HIE-ISOLDE project.
Slide 16
Safety Two issues that have triggered a change in the approach
to safety at ISOLDE. The Internal Safety Audit and their
recommendations The failure of the HRS Robot to correctly retrieve
a used target x 2.
Slide 17
Internal Safety Audit An exercise recommended by the management
for all installations at CERN ISOLDE being the first after the LHC
A series of meetings between the appointed auditors and the various
groups associated with the operation of ISOLDE A report published
with recommendations for different departments The
inter-departmental sharing of tasks between the DSOs of EN and BE
with respect to ISOLDE remains to be formalized at the level of the
Sector. shall finalise the inventory of hazards and document the
control measures (procedures and systems) that all interventions
under their responsibility are carried out following the
optimization principles stipulated in the Safety Code F. ALARA: As
Low As Reasonably Achievable and the adoption of the ALARA
Committee.
Slide 18
Robot Incidents Three reports produced. Presented at FOM
(Facilities Operation Meeting), IEFC (Injectors and Experimental
Facilities Committee). Used as an example to endorse the adoption
of the DIMR: Dossier DIntervention en Milieu Radioactif Relatively
new procedure to the PS complex still under approval. Combined with
an ALARA committee Different procedures according to radiation
levels/contamination/expected absorbed dose of participants Most
interventions at ISOLDE are Level 3 (highest). Timely. No more
quick interventions without completing the DIMR. Knock on effects
for operation.
Slide 19
Shutdown Planning 2009/2010 2 major interventions projected for
the shutdown 2009/2010. Replacement of the HRS FE#3 by FE#6
Including Boris tube insulators and cables Motivation: FE#3 has
gone beyond its expected lifetime in terms of absorbed radiation
dose. Installation in controlled conditions. Failure of HRS
Frontend to decouple actual target as from last Wednesday.
Renovation of vacuum system controls All vacuum sections of ISOLDE
excluding REX Motivation: frequent vacuum control breakdowns, aging
and obsolete equipment. Benefit from support from the Vacuum
Group.
Slide 20
20ISOLDE WORKSHOP The New ISOLDE Frontends Stefano Marzari
& EN-STI-RBS team Frontends (1, 2), 3, 4Frontends (5), 6,
7
Slide 21
Front End #6 Improvements See presentations by S. Marzari and
T. Giles in ISOLDE workshop Smaller volume Improved optics Linear
potentiometers Ceramic insulator Improved alignment system
Detachable front part Compressed air motors New controls
Slide 22
Boris Tube Insulators The removal of the Front end provides a
unique opportunity to replace the repaired insulator (2007).
Implies a complete exchange of the cabling through the BT Salle HT
Faraday cage HRS Boris tube Sparateur HRS
Slide 23
Planning of FE exchange Phase 1 - Removal of FE#3 13 th 15 th
January Phase 2 - Removal of Boris tube cables and insulator
exchange 18 th 22 nd January Phase 3 - Cabling of BT and ground
elements 25 th January 12 th February Phase 4 - Installation of
FE#6, alignment 15 th 19 th February Phase 5 - Coupling, vacuum and
electrical 22 nd 24 th February Phase 6 - Tests, mechanical,
vacuum, power 3 rd March -> Key dates Cold check out 5 th April
Off-line run 19 th April Protons to ISOLDE 26 th April Warning:
Planning subject to change according to progress on both FE
installation and vacuum controls upgrade progress!!
Slide 24
Vacuum Complete renewal of ISOLDE vacuum controls Collaboration
between TE- VSC and EN-ICE New plcs, controllers and crates New
vacuum controls - PVSS Major cabling overhaul Work already started
on unused beam-lines Once startedno looking back! PID for ISOLDE
Courtesy of G. Vandoni
Slide 25
Courtesy of S. Blanchard Main Controlled Equipments 200 Valves
120 Gauges 50 Pumps 110 Crates New Cables (Installation EN/EL)
Tunnel HRS/GPS : 70 Cables Hall : 155 Cables CR&Primaire RA :
60 Cables Vacuum
Slide 26
News from Support Groups BE-OP Employment of D. Voulot as from
1 st January 2010. PH-SME Employment of technician J. Thiboud (2
years) for WITCH and REX SC-RP Supplementary RP technician for
shutdown period. EN-STI Successful negotiation of 2 Fellows in
collaboration with ESS, Lund. Target area upgrade and liquid metal
loop project. Approval of 3.5MCHF for target area upgrade project
starting 2010. Opening of post for a Safety Engineer within
EN-STI-RBS Technical student starting today (6 months) for safety
file of ISOLDE. Opening of post for Laser Physicist in EN-STI-LP
Increase in general consolidation to 250kCHF for 2010.
Slide 27
Courtesy of Y. Kadi and M. Pasini
Slide 28
HIE-ISOLDE Schedule Important milestones for Energy Upgrade:
Start project Jan 1 st 2010 Cryogenics building ready Dec 2011
Installation infrastructures completed Dec 2012 Cryogenics
installed and commissioned Jun 2013 High energy beam line (5.5
MeV/u) installed by March 2013 Full Linac (10 MeV/u) installed by
Jan 2014 Commissioning completed by June 2014 inline with L4 and
PSB commissioning (Oct. 2013 to July 2014)
Slide 29
Current Cost The current cost of HIE-ISOLDE 1 is 36 MCHF
materials and 124 FTE (71 staff + 53 Fellows/Phd) This includes the
beam quality improvement and part of the linac design study &
prototyping costs (5 MCHF including FTE) that have already been
spent, and necessary consolidation costs. Of the assured external
funding (see below) 5 MCHF remains unspent Materials
MCHFstaffFellows/students Beam quality improvements4 Prototyping,
Linac up to 5.5 MeV/u 82126 Infrastructure, management and safety
14307 Linac up to 10 MeV/u863 Design study for intensity upgrade
21417
Slide 30
R&D activity on HIE-LINAC Y. Kadi HIE-ISOLDE Proposal,
IEFC, August 21, 2009 RF Beam dynamics studies High cavity
prototype Copper substrate manufacturing Chemical etching Nb
sputtering RF sub-system prototypes Tuner Power coupler SC solenoid
prototype Cryomodule design In parallel preparation of a test stand
for QWR at CERN
Slide 31
Cage de faraday Zone au rez de chauss libre
Slide 32
High beta cavity final welding and cleaning THPPO010 M. Pasini
SRF09 Berlin, 20-25.09 2009
Slide 33
SC solenoid prototype (Nb3-Sn technology) Magnetic length0.16m
B 2 dz>16.2T2mT2m Max mechanical length
Summary (2/2) Fellow for RF Cavity Tests => launch
fabrication of 5 series cavities (50% paid by SPL) Fellow for
Cryomodule detailed design due by mid-2010 Fellow for radiation
protection => validate layout Prepare Resource-loaded Plan for
CERN Management => release resources as early as possible
(mid-2010/2011) If construction starts by mid-2010, then
installation and commissioning of the first 2 cryo- modules for
2013 M. Pasini SRF09 Berlin, 20-25.09 2009
Slide 37
Research Training Themes Addressed by this ITN Proposal Y. Kadi
HIE-ISOLDE Proposal, IEFC, August 21, 2009 HIE-ISOLDE
SubsystemResearch Training Theme No. ESR No. ER I. Linac 1.
Super-conducting Cavity RF (LLRF system)1- 2. Super-conducting
Cavity manufacturing1- 3. Beam Instrumentation11 4. Transfer Line
magnets1- 5. Linac Integration1- 6. Linac Alignment1- 7. Single
Cavity and complete Cryomodule tests1- 8. Linac commissioning and
control applications development 1- II. Design Study for intensity
upgrade 9. Target Material Development1- 10. Target design2- 11.
High voltage and high current systems1- 12. Extraction optics and
front-end design1- 13. Cooling and ventilation1- 14. Vacuum
systems1- 15. Low-Level controls1- 16. Off-line separator and HRS
magnet1- 17. RFQ cooler and Pre-separator1- 18. Beam lines
(REX-EBIS studies)1- III. Safety 19. Radiation protection systems
for the Linac.-1 20. Radiation protection studies for the Intensity
Upgrade1-