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MICE Wrap-up Michael S. Zisman Center for Beam Physics Lawrence Berkeley National Laboratory MICE Collaboration Meeting—Osaka March 3, 2006.

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Presentation on theme: "MICE Wrap-up Michael S. Zisman Center for Beam Physics Lawrence Berkeley National Laboratory MICE Collaboration Meeting—Osaka March 3, 2006."— Presentation transcript:

1 MICE Wrap-up Michael S. Zisman Center for Beam Physics Lawrence Berkeley National Laboratory MICE Collaboration Meeting—Osaka March 3, 2006

2 Wrap-up and Action Items-Zisman2 Outline Introduction Meeting Goals Meeting Checklist Items from Technical Board Beam Line Issues Cooling Channel Issues Detector Issues Simulation Issues Controls/DAQ Issues Final Remarks

3 March 3, 2006Wrap-up and Action Items-Zisman3 Introduction (1) Progress on many fronts is encouraging —PSI solenoid arrival —spectrometer solenoid purchase moving forward —201-MHz cavity testing now under way (28 kW; 1.3 MV/m) —RF power source refurbishment under way at Daresbury —asymmetric heating of windows estimated and looks okay —progress on tracker design and definition of PID approach —hydride bed ordered (delivery in May) —new group (Kyoto) accepted into collaboration Plans for upcoming MICE meetings —June 8-11, 2006 at Fermilab (changed due to EPAC) —October 8-11, 2006 at RAL o in future consider two meetings at RAL, one elsewhere ACTION-CERN ACTIONS ACTION

4 March 3, 2006Wrap-up and Action Items-Zisman4 Cavity Ready for Testing 4616HT power supply being built at Daresbury for May 2006 test 201-MHz cavity at Fermilab MTA

5 March 3, 2006Wrap-up and Action Items-Zisman5 Introduction (2) Plans for upcoming ISS meetings —April 25-28, 2006 at RAL (with BENE) o Accelerator Group workshop April 21-24, 2006 (also RAL) —August 21-22, 2006 at UC-Irvine Need to make Video Conferences more effective —provide expanded system status reports in more formalized “news” section —exercise proper phone etiquette o know where mute button is! Web issues —new hardware and software coming o automated uploading (works for “just in time” delivery) —need to give Yağmur more than 1-day notice to set up meetings A real strength of our collaboration...thanks to Yağmur! ACTION

6 March 3, 2006Wrap-up and Action Items-Zisman6 Goals for Meeting Where are we on preparations for Steps 1 and 2? Issues —beam line, target, optics, tuning/correction algorithms, diffuser —TOF, CKOVs, MUCAL, tracker, spectrometer solenoids —trigger, DAQ, controls/monitoring —software (PID, reconstruction) —analysis (run plan, “beam” reconstruction, emittance, transmission) —installation/cabling  - STEP I: April 2007 = 394 days away! STEP II: October 2007 PHASE I

7 March 3, 2006Wrap-up and Action Items-Zisman7 Meeting Checklist - Step 1 Beam Line —optics for full range of emittances and energies (almost) —orbit-correction and collimator requirements (under way) —rapid-changeover diffuser solution (done) o define required no. of different thicknesses (under way) Step 1 —hall layout and cabling (first pass starting) —fix positions of TOF0 and TOF1 (almost) TOF0 in or out restricted area? —establish MUCAL configuration (after Frascati test) can already establish dimensions —determine need for CKOVs (almost; needs documentation) —electronics for TOF, MUCAL —trigger, DAQ strategy, controls/monitoring software (progress) —run plan and analysis approach ACTIONS

8 March 3, 2006Wrap-up and Action Items-Zisman8 Meeting Checklist - Steps 2, 3 Step 2 —articulate case for TOF2 (under way) —initiate spectrometer solenoid bid process (almost) —understand tracker light losses (almost) —analysis issues (making progress) o determination of emittance, transmission, tolerances, betas Step 3 —simulation of systematics —optics, including scraping issues

9 March 3, 2006Wrap-up and Action Items-Zisman9 Meeting Checklist - Steps 4+ Step 4 —H 2 safety review response (started; process defined) —controls and monitoring issues (under way) o RF voltage, LH 2 thickness, alignment determination —choice of cryocooler (done) —RF status o power, window heating, installation issues, LN cooling (under way) o test program progress (launched) Miscellaneous —video conference frequency o back to biweekly? —training and certification requirements (planning begun) —offices for MICE personnel (planning begun) —MOUs with RAL/CCLRC —as always, FUNDING

10 March 3, 2006Wrap-up and Action Items-Zisman10 Items from Technical Board (1) Power requirements need to be defined precisely —especially cryocoolers (about 10 kW per unit) —need efficient operation plan to stay below 700 kW (if possible) Likewise for water requirements Target test schedule is tight —prefer to be testing vibration, vacuum, reliability issues in March, not May —need milestones to monitor readiness for testing —investigate whether commercial solution for 40 A programmable current source is available o need a spec on drive system (what is required, not how to do it!) —additional effort would help (maybe Lancaster group?)

11 March 3, 2006Wrap-up and Action Items-Zisman11 Items from Technical Board (2) Need to “freeze” beam line front end —hold review by mid-April —generate standard files for G4Beamline Need sign-off on main features of Hall layout —ask for written list of objections/omissions —aim for formal sign-off at next Tech Board meeting Miscellaneous issues —hold review of tracker by “referees” by end of April (at ISS meeting?) —decide on front-end electronics by end of August (after NuFact06) o awaits Frascati test in July o approve by RAL Collaboration Board meeting ACTIONS

12 March 3, 2006Wrap-up and Action Items-Zisman12 Items from Technical Board (2) Miscellaneous issues (cont’d) —consider choice of ALICE on-line system, if allowed —give CERN a milestone for delivery of refurbished RF equipment o need equipment by end of 2007 —organize proper HAZOP with external help by April —post reviewers report (need permission to do so) —post schedule for design and safety reviews o get okay from all groups —encourage the submission of change requests at early stage o details come in subsequent change note if approved —put all of Phase 1 activities into critical path

13 March 3, 2006Wrap-up and Action Items-Zisman13 Beam Line Issues (1) Get safety sign-off on shielding approach by April —can CKOV1 shielding be reversed to avoid trapping detector? Investigate matching to different solenoid fields rather than fixed 4 T —not high priority Understand what happens to collimated particles Explore use of ISIS target station 2 correctors —can we piggyback on their order? Define tolerances (alignment, field strength, field quality) for all elements

14 March 3, 2006Wrap-up and Action Items-Zisman14 Beam Line Issues (2) Develop optimizer for beam line design Define diagnostic needs for beam line —need to beef up optics effort Target issues —try to complete target system tests at RAL before end of May o carry out full test in ISIS in June —interlock “park” mode to be sure mechanism is withdrawn from beam —evaluate position reproducibility requirements o is performance worse with 40 A drive than with 5 A? —put time gap in test run (e.g., 1 week) to assess reproducibility —resolve engineering issues and develop reliable milestones —complete materials evaluation for vacuum compatibility

15 March 3, 2006Wrap-up and Action Items-Zisman15 Beam Line Issues (3) Validate 200 mm clear diameter for diffuser mechanism Assess options in case of failure of changing mechanism —should be okay to disassemble and repair on bench if spare parts available —need to be able to assemble mechanism accurately o engineering solution must ensure this Need indicator to verify which diffuser is in Revisit CKOV1 shielding (put hole upstream, not downstream)

16 March 3, 2006Wrap-up and Action Items-Zisman16 Cooling Channel Issues (1) Magnets —decide on AFC changes and formalize (e.g., using cooling pipes rather than liquid cooling) o is this needed for all magnets? —formalize maximum force design values (50  70 tons) o implies bigger heat leak o add low-field polarity check to operational procedures —understand calculation results on effects of Match Coil thickness changes —decide on power supply specs (300  350 A) o need to watch out for “scope creep” —formalize adoption of pulse-tube coolers rather than GM o requires vertical mounting and shielded rotary valve o prefer use of pulse tube cooler for H 2 R&D system! o note that compressors also need to be away from magnetic field

17 March 3, 2006Wrap-up and Action Items-Zisman17 Cooling Channel Issues (2) Magnets (cont’d) —decide on proper interface between AFC module and absorber o use dummy absorber o use pipe template for absorber fabrication —design must be done by end of 2006 o develop milestones to reach this result H 2 R&D system —complete and document formal HAZOP process —evaluate practicality of non-flammable MLI —define credible worst-case accident scenario —avoid creating hydrogen zone in experimental area —finalize response to reviewers and send to Tech Board for approval o review by Design and Safety group o approve by Exec Board o got approval from Collaboration Board on this approach

18 March 3, 2006Wrap-up and Action Items-Zisman18 Cooling Channel Issues (3) RF —method to measure voltage at 1% level is not in hand o likely to require beam-based measurements to achieve this

19 March 3, 2006Wrap-up and Action Items-Zisman19 Detector Issues (1) Avoid late-night technical discussions Need to resolve—and get buy-in—on technical decisions —sandwich calorimeter vs. KLOE design o do we need one KL layer, or all plastic? —need for CKOV2 (almost ready; probably not needed) o need to document case better —design for CKOV1 (ring imaging?) —seems late days to be doing all this o what is needed to converge? Do not preclude Step 2.5 case —use reentrant design rather than welded ring —can we pre-qualify Japanese magnet vendors

20 March 3, 2006Wrap-up and Action Items-Zisman20 Detector Issues (2) Wrap up spectrometer spec by mid-March Need plan for final magnetic mapping with field sensors Be aware of delays associated with large purchases Need to pay more attention to QA/QC —wiring errors —connector misalignments —build a fifth station using full QA procedures —other detectors need to show similar discipline Need to develop analysis software —incorporate test beam QA techniques into G4MICE to use in the actual experiment

21 March 3, 2006Wrap-up and Action Items-Zisman21 Detector Issues (3) Understand 201 MHz RF backgrounds —has implications for operation of AFE IIt board (count rate capability) —MTA tests with Coupling Coil would go a long way toward answering which regime we’ll be in Check need for radius on spectrometer solenoid end plate Reserve 2 m clear space around spectrometer solenoid (in “out” position) for UV-free tent during installation —mark footprint on Hall layout drawings Consider need for dual Fe shields at TOF2 to lower B r —a non-trivial perturbation on present design, if needed

22 March 3, 2006Wrap-up and Action Items-Zisman22 Detector Issues (4) Evaluate possible benefits of “almost-equal” station spacing Evaluate need for, and availability of, 60 Hz power for VLPC cryocoolers Understand light loss for all stations Do we want to use tracker without solenoid in initial beam line tests? Finalize positions of TOF0, CKOV1, MUCAL —fix size and segmentation of MUCAL

23 March 3, 2006Wrap-up and Action Items-Zisman23 Simulation Issues Evaluate Step 3A cooling measurement for thinner absorber (5% rather than 13%) Understand predicted lack of cooling with large ΔE —consultation with Palmer and Fernow recommended (at RAL in April, or earlier at BNL?) Evaluate use of TOF2 to constrain timing at RF location Resolve discrepancy between ICOOL acceptance and analytic estimate Need run plan for Steps 1, 2 from Analysis Forum —also “beam” reconstruction and emittance determination techniques —collimation of beam to improve purity/generate pencil beam

24 March 3, 2006Wrap-up and Action Items-Zisman24 Controls/DAQ Issues Develop trigger scheme Specify/evaluate all required hardware, especially front-end electronics —assemble a test system Finalize DAQ scheme at Fermilab (CM15); approve at RAL (CM16) —architecture: PC + VME + Ethernet Need PID + track reconstruction algorithms for Step 1 —also front-end electronics specification (late!)

25 March 3, 2006Wrap-up and Action Items-Zisman25 Final Remarks We continue to make progress but some things are moving more slowly than hoped Be vigilant about opportunities to publicize MICE —muon program got good press at HEPAP AARD Subpanel —need to think about journal publication(s) MICE management continues to be grateful for the hard work of the collaboration Now 394 days to target date for first beam See you at Fermilab

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