Run Planning Meeting Notes, Feb 9-Feb 15, 2017
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Contents
Tuesday, February 14
- Accelerator Status
- Extended down Monday
- Hall-D/GlueX items
- Monitoring
- Low level
- High level
- Run Plan
- Tuesday Access
- Hovanes + Tom: cable running
- Sergei: TRD radiator change
- Adesh: FCAL bases tests
- Collimator insert
- Tom: Adjust PSpec magnet PS rheostat
- Alex D: Tagger hall
- Production
- Harp scan every 2 days. Monday
- Empty target run. 1 hour. 100 nA with diamond.
- Trigger efficiency studies (2 hours) Wednesday.
- Investigate Tagger and SC trigger
- If there's a Solenoid trip: TAC run and no field track measurement
- Tuesday Access
- Offline Analysis?
- Any Other Business?
Monday, February 13
- Accelerator Status
- Mostly smooth running over the weekend
- Cryogenics problems Monday Owl
- Mostly smooth running over the weekend
- Hall-D/GlueX items
- Running last 48 hours
- ABU: 31 hours (371+339+279+380+367+122)
- BANU: 5 hours (27+65+126+13+59+15)
- Triggers: 12 billion reached [4]
- How many are hadronic in the coherent peak?
- Auto CO2 bottle changeover didn't happen [5] [6]
- New valve purchased. Bottle will be changed preemptively in future.
- Nitrogen valve issue [7] [8]
- This was a controls issue, not quite clear. Under investigation.
- Rates vary with diamond orientations [9] [10]
- Evidence suggests this is low energy stuff. Seems like it will cancel to first order in PARA to PERP for both settings.
- Solenoid power supply transistor light persists [11] [12]
- Not a problem. Instruct shift crew to ignore this.
- DAQ disconnection [13]
- Memory allocation problem solved,
- network overloaded at certain hours of the day, RC timeout extended to 5 minutes
- ET system crashes - still mysterious. Under investigation.
- Running last 48 hours
- Monitoring
- Run Plan
- Tuesday Access
- Hovanes + Tom: cable running
- Sergei: TRD radiator change
- Adesh: FCAL bases tests
- Fit check collimator insert
- Tom: Adjust PSpec magnet PS rheostat
- Alex D: Tagger hall
- Production
- Harp scan every 2 days. Monday
- Empty target run. 1 hour. 100 nA with diamond.
- Trigger efficiency studies (2 hours) Wednesday.
- Investigate Tagger and SC trigger
- Raw (Full waveform) run?
- 10 minutes. 100 nA with diamond
- If there's a Solenoid trip: TAC run and no field track measurement
- Tuesday Access
- Offline Analysis?
- Any Other Business?
Saturday, February 11
- Accelerator Status
- 2 hour down overnight for RF problem, cavity "lost" its parameters somehow.
- Hall-D/GlueX items
- Running last 24 hours
- ABUs 15.4 hours
- Triggers
- Solenoid power supply transistor
- Harps scans show divergence in Y https://logbooks.jlab.org/entry/3457448
- Ask MCC to run Todd's script? Decide to leave it for now.
- Running last 24 hours
- Monitoring
- Low level
- Beam properties histogram: the issue was a change in the analysis cuts which applied to the new diamond but needed a new AMO reference
- Daily
- High level
- New features are nice
- Fits will be improved
- Beta plots need looking into.
- Low level
- Run Plan
- Production
- Harp scan every 2 days. Sunday
- Empty target run. Monday
- Trigger efficiency studies (4 hours) Wednesday
- Offline Analysis?
- Any Other Business?
Friday, February 10
- Accelerator Status
- Difficulties on Day Shift and into Swing. Owl smooth
- Hall-D/GlueX items
- Running last 24 hours
- ABUs 9 hours
- Triggers
- Coherent Peak Position
- Harp scans
- https://logbooks.jlab.org/entry/3457200
- If the beam returns from a down or if it's beam 2 days since the last scan.
- Running last 24 hours
- Monitoring
- Low level
- New channel out in FCAL; occupancy drift in single PS channel; LED signals still in some histograms, cuts coming; new statistics on some histograms (nice)
- High level
- Rho analysis, 30 kHz data before beam focus was tuned
- https://logbooks.jlab.org/entry/3456928
- timing calibration seems out; polarizations might not be good because of lack of accidental subtraction; signal to background looks great; 30% lower rho/trigger compared to Spring 2016(should improve with calibration); omega width 50% larger and yield lower by half
- Rho analysis, 30 kHz data before beam focus was tuned
- Low level
- Calibration
- Calibration jobs are on the farm right now, hopefully ready by Sunday/Monday.
- Run Plan
- Production
- Offline Analysis?
- Any Other Business?
Thursday, February 9
- Accelerator Status
- Slew of difficulties over Owl shift, pathlength drift, electronics problems, BPM problems
- Hall-D/GlueX items
- Running last day
- ABUs
- Triggers
- Coherent Peak Position difference
- 50 kHz running
- Smooth running, hodoscope up to 5.7 GeV turned off. Occasional glitches in the DAQ rate due to Java garbage collection (adding a few percent to deadtime.) 900 MB/s
- What is the data quality? (Normalized to trigger) Physics signals, (omega, rho: # per trigger, widths, backgrounds)
- Monitoring
- Low level monitoring coordinator (Thomas): Report every morning.
- High level monitoring coordinator (Alex): Report every morning.
- Cut on triggers for monitoring
- Run DAQ when beam is gone
- Threshold for alerting experts?
- Run coordinator should be called for problems that limit data taking
- Target IOC problem overnight
- Reboot should be done by shift crew if they know how, otherwise call Deur, then cal Ito.
- End run script and RCDB entries
- Running last day
- Run Plan
- Align coherent peaks?
- Production
- Offline Analysis?
- Any Other Business?