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Linda R. Coney – 24th September 2009 MOM Update Linda R. Coney 24 September, 2009
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Linda R. Coney – 24 Sept 2009 Outline Last VideoConference Target Taking Data Operations Continued Run Plan Progress Made
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Linda R. Coney – 24 Sept 2009 At Last VC End of August Shutdown MICE getting ready to take data for first time in 9 months New target reassembled, tested and in ISIS Beamline tested Getting detectors ready MICE Rehearsal… Since then: 1 week of Machine Physics 10 days of User Run MICE again running a target in the ISIS beam TAKING DATA!
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Linda R. Coney – 24 Sept 2009 Data Taking Program Machine Physics: u Run experiment while testing target Pion beam at 333 MeV/c Proton beam at 333 MeV/c Muon beam at 252 MeV/c with Decay Solenoid and w/o ISIS activation study Beam Loss vs Particle Rate Study Use GVA1, TOF0, TOF1, FNAL BPMs, CKOVs, and now KL USER RUN: u Working on DAQ issues s Running at higher particle rate – DS operational, high loss levels in ISIS s Necessitates changes in DAQ to accommodate high particle rate u Pion beam at 330 MeV/c – Decay Solenoid beam dynamics study s Nominal setting at 550 A (3.1 T) s 9 settings higher and lower in steps of 0.15 T s Only required ~60 target pulses/point to get sufficient counts in TOF0
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Linda R. Coney – 24 Sept 2009 Target Operations & Data Taking Pulsed 50,000 in test stand in R78 Installed in ISIS u Run for 12,000 pulses..inspected – PASSED u Run for 10,000 pulses..inspected – PASSED u Run for 20,000 pulses..inspected – PASSED Target is working beautifully – NO problems Target Operation: u Machine Physics – 5 days of MICE running u User Run – 3 days Target operation Studies u Search for ideal timing wrt ISIS cycle u Search for ideal depth into beam u Found edge of beam at injection for purposes of understanding what we need to avoid on the outswing of our target u Took data with modified voltages on capacitor bank u Studies with ISIS running at 50 Hz (Normal User Run conditions)
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Linda R. Coney – 24 Sept 2009 MICE IN ISIS Without and with MICE Target at 2V
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Linda R. Coney – 24 Sept 2009 Target Operations Target I stability from 5 Sept 2009 All plots to follow show characteristic two peaks (exact capture position). The two peaks are always the same distance apart - 0.13 mm - corresponding to the resolution on the optical readout of 0.15 mm. The widths of the peaks has not changed since the start of running in ISIS on 5/9/09
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Linda R. Coney – 24 Sept 2009 Target Operations II Target I stability from 16 Sept 2009 deltaD for 5 th =.13 and for 16 th =.12 Running at same depth – consistent behavior
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Linda R. Coney – 24 Sept 2009 Target Operations III Beam Center Distance over Evening shift Wednesday Shows the time series for the last run, patchy because we were stopping and starting the target a lot. The important thing is the BCD consistency.
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Linda R. Coney – 24 Sept 2009 Target Operations IV Beamloss (in Sector 7) for the entire Activation Study run (13 hr) Note that there do seem to be two distinct peaks although Paul has only fitted a single gaussian.
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Linda R. Coney – 24 Sept 2009 Target Target Group at MICE
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Linda R. Coney – 24 Sept 2009 MICE Timing New tool to understand MICE timing wrt ISIS
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Linda R. Coney – 24 Sept 2009 Taking Data MICE at work
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Linda R. Coney – 24 Sept 2009 Sept 6 Data Run 945 Sept 06 2009 pion beam 333 MeV/c with 400mV losses protons
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Linda R. Coney – 24 Sept 2009 Sept 6 Data Run950_Sept062009_protonBeam333MeVc_D2nominal
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Linda R. Coney – 24 Sept 2009 Sept 12 Data Preliminary: Beam Loss vs Particle Rate Study first draft, means of distributions judged by eye, no error calcs, etc full analysis is to follow rates of beam loss seem very high because not yet been calibrated to nominals u last time the reduction factor was about 0.4, PH thinks more this time. unsure at present as to what units have for the GVA1 (why are no units for them, again to be sorted out for full analysis)
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Linda R. Coney – 24 Sept 2009 Beam Loss vs Particle Rate Not the full story Problems with GVA1 trigger Problems with GVA1 detector at very high rates Need to rerun study – plan to use TOF0 as counter
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Linda R. Coney – 24 Sept 2009 Beam Stop Open! Remote operation of Beam Stop
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Linda R. Coney – 24 Sept 2009 Sept 10 Data Run 972 Sept 10 2009 pion beam 333 MeV/c with 500mV losses protons
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Linda R. Coney – 24 Sept 2009 Sept 10 Data Run977_Sept102009_piBeam333MeVc_400pulses
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Linda R. Coney – 24 Sept 2009 Sept 12 Data Run1006_Sept122009_pimuBeam336.85-256 MeV/c 120 pulses
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Linda R. Coney – 24 Sept 2009 Recent Data Beginning to calibrate TOFs Last year’s data……………..This year… Making progress..need more data..
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Linda R. Coney – 24 Sept 2009 Operations I Updated documentation - DONE Some trips of beamline magnets u usually trip on power supply water flow DAQ – See talk by Vassil u having some trouble with new fADCs u Possible timing issue with TDC and fACD signals u Possible fix this week “invalid” alarms problem – FIXED!
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Linda R. Coney – 24 Sept 2009 Operations II Electrical u Sent list of typical magnet current combinations to Daresbury u Calculations being done to determine if running near limits of distribution box on wall Shifters u New list of instructions for novice shifters – Paul Harrison will upload to MICE shifter schedule website u New shifter folder with operating instructions and safety class requirements u Shifters need to be prepared before arriving in MICE LCR for shift! s Big responsibility, full time attention required, mistakes could be critical eLOG u Still hanging and making operations difficult u Need it to work smoothly u Moving to heplnw17 this week – mirror on MICE website from IIT Slow ramp on beamline magnets u In progress
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Linda R. Coney – 24 Sept 2009 Next Run Plan for this week: u Commission Decay Solenoid – DONE s Pion optics - Scan through decay solenoid current settings s Compare beam profile in detectors to simulation u Commission FNAL BeamProfileDetectors - DONE u Commission DAQ s Adjust to higher particle rate s Change TOF0 trigger to AND of two planes instead of OR s Set up TOF1 trigger – necessary due to increased particle rate s Figure out why TDC and fADC information for particles not saved appropriately s Commission TOF1 and KL DAQ s Check with Analysis code u Calibrate TOF system s 330 MeV/c pion beam, 150 MeV/c e+ beam, 100 MeV/c e+ beam u Optimize Upstream Beamline s Marco and Chris Rogers s Optimize Q1-Q3 s Move quads to maximize rates in detectors
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Linda R. Coney – 24 Sept 2009 Conclusions Within the last month: We are running again New target Higher loss limits Decay Solenoid Operational! Routinely used. Detectors working DAQ work ongoing u NOTE: Last year < 50 particles/spill, Now: over 200 u This is why we need to spend time working on the DAQ Good NEWS – u Learning a LOT u We have seen MUONS!
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