spokesman’s update k. long imperial college london/stfc
DESCRIPTION
UPDATE Spokesman’s update 2 AugustTRANSCRIPT
SPOKESMAN’S UPDATEK. LongImperial College London/STFC
2
Contents• Update
• Step IV• Construct/commission/operate/analyse
• Papers
• NuFact15
• CM43
2 August 2015
UPDATESpokesman’s update
2 August 2015 3
42 August 2015
52 August 2015
62 August 2015
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Permission to operate• MICE is now operating under:
• “MICE Operating Instructions 01”: • Finally signed-off (i.e. all signatures attached) 22Jul15• Method statements and risk assessments in place 12Jul15
• OPI:• Defines process by which safety assurance has been given
• Procedures, responsibilities, sign-off:• “Safety Reviews” page on MICEmine
• MICE procedures for commissioning and operation• Sign-off responsibilities for each step in magnet commissioning
• Update to procedures:• Additional access arrangements being made• Experience gained in magnet training now being applied• Revision to some procedures being discussed• This is within “MICE competence”:
• Revised procedures will be shared with ISIS
2 August 2015
8
Magnet status• Upstream spectrometer solenoid:
• Issues identified in tests prior to training start
• Warm-up to rectify:• Issues (mis-wiring/insulation) addressed
• Now in pump-purge cycle• Cool-down will begin soon
• Downstream spectrometer solenoid:• Magnet and power supplies made
ready for training;• Initial training; 5 (of 15) quenches:
• Most recent 203A• Last quench:
• Power-supply/control issues:• Under investigation• Requires:
• Modifications to electrical h/w• E.g. lock-out/tag-out, magnet-off buttons
• Revision of some procedures
• Focus coil:• Magnet cooled down to
operating temperature• Power supply systems ready to
use• Thermal issue:
• Boil-off of LHe too fast• Thermal behaviour of cold mass
and thermal shield unsatisfactoruy• Many investigations
• Decision to warm up taken:• Monitor pressure (vacuum)• Gas composition
• Still need to diagnose cause of behaviour
2 August 2015
9
Tracker• Reconstruction:
• In good shape:• Chris Hunt mentioned in dispatches
• In MAUS 1.0.0 – used for first full processing (see later and DR)
• Readout:• Essentially debugged:
• Ed Overton mentioned in dispatches!• Period to establish stability end August early September:
• Ed Overton and Paul Rubinov (September)
• Hardware: outstanding issues:• Hall probes in tracker volume:
• Installed, ready to go but:• Not read out, not recorded
• Essential that this is complete before magnet training restart• Leak in diffuser top-hat; requires removal of PRY end-plates
• A big deal• Install gas monitor on exhaust lines; then fill with He gas
2 August 2015
STEP IVSpokesman’s update
2 August 2015 10
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Cycles 2015/01a and 01b• Data in the can:
• Field off data:• Large number of events through to TOF2;• Sufficient for straight-track alignment
• Field-on data:• One night-shift’s worth with:
• No field in SSU; 100A in SSD• Probably sufficient to work out magnetic axis of SSD
• Priority:• Complete alignment; may need bespoke belows
• Shift crews:• Working well; patience & flexibility; congratulations to all
• Expert cover:• An issue; particularly DAQ and detectors “DOC”
2 August 2015
12
Processing of data
• See Durga Rajaram’s talk:
• First consistent processing of Step IV data done.• Excellent!
• Please use it!• We need to know what is good, what is not so good;• We all need to be working from the same source!
2 August 2015
PAPERSSpokesman’s update
2 August 2015 13
142 August 2015
EMR paper ready for collaboration; see F. DrielsmaPion contam: up to draft 3 of note (and paper) with wise people
Work organised; KL/CR discussing how to expedite preparation
Draft in preparation; wise people to be identified by EB
Draft at advanced stage: issue in track-fit being debugged
Draft assembled!
Draft beingassembled.
Draft under review in the EMR group
EMR paper in good shape. Pressure! KL paper catching up. The other papers …
NUFACT 2015Spokespersons update
2 August 2015 15
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MICE talks at NuFact 2015
• Opportunity to promote our experiment
• Ball dropped on circulation draft talks …
• Please circulate a draft of your talk for comment:• Must be done sufficiently in
advance for people to comment
2 August 2015
CM43Spokespersons update
2 August 2015 17
182 August 2015