mice wrap-up michael s. zisman center for beam physics accelerator & fusion research division...

MICE Wrap-up

Michael S. ZismanCenter for Beam Physics

Accelerator & Fusion Research DivisionLawrence Berkeley National Laboratory

MICE Collaboration Meeting 22—RALOctober 21, 2008

October 21, 2008 Wrap-up and Action Items-Zisman

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Outline•Introduction•Meeting Goals•Installation Meeting•Items from Technical Board•Beam Line Issues•Cooling Channel Issues•Detector Issues•Infrastructure Issues•Simulation/Analysis Issues•Controls/DAQ Issues•Commissioning Issues•Uncertainties•Final Remarks


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Introduction (1)•Progress continues

— spectrometer solenoid 2 fabrication well alongo making modifications based on magnet 1 results

– better thermal connections to shield; better “plumbing” for LHe heat exchanger; larger vent pipes

o second magnet will be shipped first– modifications will then be “retrofitted” into magnet 1

o MOU signed for “loan” of equipment— some “issues”

o there are some financial issues to be reconciled with vendor– these are causing further delays

o the placement errors on the stands will be accommodated in the field– still need some factory modifications to support stands avoid interference

with iron shield brackets— GVA detectors working well and have been workhorse of beam line testing

o TOF0 is likewise extremely useful...but a bit lonely


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Introduction (2)•Spectrometer solenoid 2 ready for assembly

Improved thermal connection for shield


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Introduction (2)— large test winding for coupling coil nearly completed at ICST

o expect completion this month– review at Harbin scheduled for December 6-8, 2008

— we have started detailed ISIS beam loss investigationso have temporary permission to increase loss limits (0.05 0.50)– need to calibrate ISIS BLMs and our production rate

o this uses most of the pulses remaining for the installed target

Winding large test coil at ICST


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Introduction (3)— first two FCs now being designed

o Production Readiness Review scheduled for week of November 3— very good news: ISIS will run in February

•Still have some problems to overcome:— need robust target solution

o no off-line target running right nowo approaching pulse limit on installed target

— must diagnose and repair decay solenoido should have better assessment soon

— delays in magnets continueo spectrometer solenoidso coupling coils

— water leaks in beam line quadrupoleso could probably be run without water (moot point now)

— developing plans to deal with each of these


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Introduction (4)•US funding frozen (“continuing resolution”) until March 2009— still need about $1M more from NFMCC over next 2 years to

make our schedule

•Plans for upcoming MICE meetings— Harbin (January 13-17 2009)— RAL (Spring 2009, exact dates tbd)— LBNL (Fall 2009, exact dates tbd)


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Goals for Meeting•Review status of the various parts of the project

— construction status— operations (MOM report)— software and analysis

•Take stock of new issues and proposals— near-term (e.g., MICE luminosity measurement)— long time scale (e.g., MANX or other 6D cooling proposal)

•Make sure work is coordinated and prioritized

•Rebaseline experiment schedule based on latest inputs


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MICO Meetings•Key issues

— check all MICE Hall equipment for compatibility with magnetic fields

o microswitches, electronics, tools, etc.– also watches and credit cards!

•With AN’s oversight, meetings are going well— MOM is supposed to write minutes for these

o it appears that very few do this– I would like to see this task resumed


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Items from Technical Board (1)•Decay solenoid testing

— need to understand problems

•Need to push for reviews as needed (not as wanted)— several being held in conjunction with CM22

•Remember that there is ~6-8 week “setup time” for new equipment— should be included in schedule— most components delivered like Xmas gifts (“some assembly

required”)o and, like the gifts, the instruction manual is sometimes missing or incomplete


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Items from Technical Board (2)•Must update L3 schedules and milestones for all systems (“Phase 2” planning)— need internal review when ready

o present plan indicates substantial delay for Step 5o still no UK commitment for Step 6

— aspirational schedule is only as real as the detailed schedules behind it

•Should TB serve as safety committee?— or is separate committee needed

o plan is to try TB option first

•Infrastructure still a big deal— improved communication with DL is really helping— need upgrade to electrical infrastructure (£600K)

o long lead time; need STFC funding


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Beam Line Issues (1)•Review plans to replace production target

— this is critical— is mechanical damping in Sheffield apparatus a key difference?— use rounded edge bearings (electroless Ni coated)

o make sure this does not give magnetic dust— want new target tested by January 15, 2009

•Understand production rate vs. loss rate in ISIS— making progress here, but need x500 ultimately (x50 soon)— different target orientation study under way (Adam Dobbs)

o this is nice work

•Upstream beam line appears misaligned wrt target position— assess consequences

o with and without decay solenoid


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Beam Line Issues (2)•Decay solenoid is another critical issue

— understanding magnet vs. refrigerator problems is needed

•Still need to fill out emittance-momentum matrix— hopefully not a 1x1 matrix

•Need to evaluate need for beam line monitors— with GVA counters and TOFs operational, are these redundant?


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Cooling Channel Issues (1)•Magnets

— develop written operational procedures for all devices— FC bobbin design stresses need further investigation

o already slowing down fabrication process— FC quench protection (active or passive) decision needed

•H2 R&D system— need more effort here; in conflict with decay solenoid effort

o review this week; fabrication progress is slow— issues: ATEX certifications (diagnostics); operational effect of He gas;

PPS implications (operate under controlled access)

•Absorbers— must bring RAL safety committee on board for using LiH disk in Step

3.1

— thermal tests of LH2 absorber may be done at KEK, not RAL

– RAL cryostat needs modifications to be big enough— desirable to define non-contact QA procedure for thin windows


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Cooling Channel Issues (2)•RF

— define required interlocks— test of high power amplifier at Daresbury

o schedule continues to slip; need updateo suggest retesting amplifiers at high power after installation at RAL– has PPS implications (bing worked on)

— is NEG regeneration compatible with magnetic fields?— define alignment specifications— installation issues need work (portable clean room, installation

tooling)— final design review for RFCC later today

o need travelers for fabrication QC— need risk assessment in case of breaking Be window— evaluate need for

o hybrids to deal with reflected powero pressurization of coax power lines (N2 or SF6?)

— specify phase determination requirements


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Cooling Channel Issues (3)•Vacuum

— need <150 G for turbo pump operationo pumps that must remain on all the time should be far away

– not an ideal place to locate them


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Detector Issues (1)•Need to deliver TOF1 to RAL before end of the year

— need to get cables installed in advance of deliveryo there is a bottle of champagne riding on timely delivery now!

— may need new diode laser for calibrating— running at somewhat lower voltage likely to help voltage spikes— would be good to monitor phototube performance (starting with

TOF0) by looking for high voltage pulses (data logger? DAQ?)

•Considering using passive divider for TOF2— workable but would limit count rate— need to assess magnetic forces and shielding of redesigned

systemo Gregoire needs CAD drawings to do this

— some front-end electronics (TDC + 3 flash ADCs) still needed

•PID effort level looks uncomfortably low— look for EuCARD help?


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Detector Issues (2)•Need to build new “trolley” for KL and EMR

— requesting INFN funds for this next month

•EMR design well along (Giannini, Graulich)— need to confirm INFN funding (hopefully next month)

o thereafter, need design write-up and fabrication milestones

•Tracker issues— Hall will be ready to accommodate tracker in mid-December

o should we install it in January, before Spectrometer Solenoid is ready?

o pros:– allows early integration with DAQ

saves overall schedule time and minimizes risk of subsequent schedule delay

o cons– additional risks from handling device multiple times

o is it worth the risk?


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Infrastructure Issues•Need air conditioner system operating for Linde refrigerator

•Need UK safety approval for remaining building modifications— should not be a big deal, but must be done

•Cable issues important— should plan for cable installation before equipment arrives RAL— need to think about how many spare cables required

•Likely we will need crane-covered preassembly space at or near RAL— not clear that R5.2 will have sufficient space


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Simulation/Analysis Issues•Need to learn how to correlate particles with RF phase— could we use ISIS RF signal to develop/validate approach?

•Define and document all alignment tolerances

•Can/should we keep TRD updated?— a parameter list would also be useful, especially to engineers


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Controls/DAQ Issues (1)•Send spectrometer solenoid power supplies to Daresbury for testing with control system in advance

•Need configuration save and restore

•Need to start on RF control logic

•Database inputs needed soon— may be hard to “retrofit” missing categories later

•Multiple user interfaces on multiple computers cumbersome— Tom Roberts will look into streamlining this aspect of our system

o can we run from a single console?


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Controls/DAQ Issues (2)•Controls/monitoring data is orphan

— needs better connection with DAQ datao for example, want run summary sheet via DAQ that encompasses all relevant run information

•Should we avoid temptation to integrate beam line into G4MICE?— cost-benefit ratio is questionable at best— similar question probably applies to G4beamline

•Replace ALICE picture with MICE picture on DAQ top page— we deserve to be famous too!


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Commissioning Issues•Common funds now due at RAL

— need report on what has been paid

•MOMs— schedule posted at http://mice.iit.edu/mico/momshifts.html

o these people have been really effective at keeping things on track

o too much switching around will defeat the purpose and should be avoided

— need to enforce use of e-log by all shifts— need contact list for all MICE personnel, not just experts— need more structured MOM-to-MOM communications

o “passing the baton” is sometimes inefficient

Note: No system should be left unattended. Our folks must be there!


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Schedule•Best present estimate


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Uncertainties•Step 6 remains vulnerable

— have DOE or FAC write letter to STFC?

•Infrastructure support proposed for Phase 2 appears under funded

•Need additional help for decay solenoid and LH2 R&D efforts— probably new hires


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Final Remarks•MICE management is grateful for the continued hard work of the collaboration

•Please continue to support Andy Nichols— cooperate with requests in a complete and timely fashion— make use of MICE Liaison Office (Rose Hayes)

•We are making good progress— still a rush to get everything built and installed

o we continue to move inexorably forward– we must do so with safety in mind

•Be vigilant about opportunities to publicize MICE


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Kudos•Thanks to Alain Blondel and Debbie Loader (CM22 organizers)— for a good meeting and a great dinner!

•Welcome to “new recruit” Linda Coney— our newest “MOM”

See you in Harbin Dress warmly!

Need hotel confirmations BEFORE December 15, 2008

Need to check whether invitation letter needed for visa

mice wrap-up michael s. zisman center for beam physics accelerator & fusion research division...

Documents

issues o

icst o

delays o

production rate o

beam line quadrupoles

financial issues

robust target solution

o production readiness