Difference between revisions of "Run Planning Meeting Notes, Apr12-Apr 18, 2018"

Revision as of 18:10, 17 April 2018

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• Trigger graphs
• Trigger Spreadsheet
• Run Plan Google Calendar
• Accel. Plan Google Calendar

Thursday, April 12 at 08:45

1. Notes from the previous 24 hours:
   • TAC run (evening strip chart) was finished around 10pm. Took data with both the 750um and 75um converter.
   • Production started around 11 pm and has continued through the night.
2. Issues:
   • When adjusting a procedure, please contact the expert before doing so to make sure the changes you make are okay.
   • ~1hr 20 mins of DAQ issues while the target was filling and we could not run in raw mode.
   • PS scalers (Alexandre)

1. Reports:
   • Correlation between beam Y position and CDC HV current (Beni)
   • Attenuation lengths (Lubomir)
   • PS acceptance from TAC run with 1/3 of data (Sasha)
   • Low Level Monitoring Report (Thomas)
2. Run Plan
   • Pass change this morning
     • Short access to install copper and tungsten shields
     • Move muon chamber back into beam line
   • Production running
     • Harp scan when beam comes back
   • Fast raster scan postponed to Monday
   • Any more systematic studies we want to do?
3. AOB

Friday, April 13 at 08:45

1. Notes from the previous 24 hours:
   • No beam until 4pm
   • Finished materials scan at 5:35pm
   • Finished raw mode run
   • Bill broke the 7hr mark for ABU during his shift- first time a hall has done that this spring
   • Muon chamber installed with the steel bar
   • New radiator on GEM TRD
   • Shields installed on profiler
2. Issues:
   • Bill noticed some minor inconsistencies with monitoring plots (beta vs. p, beam energy, and trigger bit)
3. Reports:
   • Harp scan (Hovanes)
   • Materials scan (Lubomir)
   • Low level monitoring (Thomas)
4. Run Plan
   • Todd wants to try a low current lock on the active collimator at ~1pm
   • Trigger studies (~2hr)
   • Hovanes and Sasha need to test V wire and lock on active collimater (~10 minutes)
   • Production and switching to the thin diamond next week

1. AOB
   • Have Lubomir for opportunistic access to remove Cu and half of W shield- any others? Beam studies on Monday and RF recovery Tuesday
   • Run meeting this weekend?

Saturday, April 14 at 08:45

No meeting

Sunday, April 15 at 08:45

No meeting

Monday, April 16 at 08:45

1. Notes from the previous 48 hours:
   • Accelerator ran OK this weekend- downtime events every shift
   • Low current AC test delayed due to voltage adapter problem. Tentative postponement until Wednesday?

1. Issues:
   • Low yield of physics signals (Mark D.)
     • Larger variations in detector timing than normal (Sean)
     • Range of interesting timing features (Mark D.)
   • Newly inefficient PS channel (Dave)
   • Trouble putting rootspy histograms in logbook (Mark I.)
     • We will not tolerate identity theft
   • Transmission last night (Beni)
2. Reports
   • New preamp (and calibration) fixes noisy CDC channels (Naomi)
   • [1], [2], (Revised entry) Figure of merit vs. virtual electron spot size (Justin)
   • Sunday's harp scan (Hovanes)
   • PS baselines adjusted (Sasha)
   • Low level monitoring (Thomas)
3. Run Plan
   • 8hr beam studies today
     • Controlled access to adjust shielding, replace AC voltage adapter, FCAL bases, and other technician work
   • Finish materials scan
   • Production this evening
   • RF recovery tomorrow
     • Switch AC to 3.5 mm collimator
       • Take data through Thurs. with this setting: 150 nA, 75 micron converter, 0/90, AMO
       • proper beam tuning?
   • Best time to try to try the low current lock on the AC for the next TAC run? Tentatively postponed until Wed. before raster tests

1. AOB

Tuesday, April 17 at 08:45

1. Notes from the previous 48 hours:
   • Reinstalled 50 micron W and removed Cu shields
   • Active collimator voltage adapters repaired
   • 9 FCAL bases replaced
   • Sean let me know he was checking on calibrations
   • Trickles of beam at 6 pm

1. Issues:
   • Noisy CDC channel (Naomi)
   • TAGH volatages not turned off after TAC run, PS baselines adjusted (Sasha)
2. Reports
   • Materials Scan (Lubomir)
   • Harp scan (Hovanes)
   • Low level monitoring (Thomas)

1. Run Plan
   • RF Recovery
     • Switch AC to 3.5 mm collimator
       • Settings to run at from beam line group? Last I heard was 75 um converter, ~300nA (normalize DAQ rates), 0/90 PARA/PERP x2, AMO x2
       • Talked to Todd about a performing a beam convergence. Will be available all day tomorrow
     • Reinstall shielding

1. AOB

Wednesday, April 18 at 08:45

1. Notes from the previous 48 hours:
   • Moved AC to 3.5 mm collimator
2. Issues:
   • Noisy CDC channel
3. Reports
   • Calibrations (Sean)
   • BCAL Z position calibration, run dependence(Mark D.)
4. Run Plan
   • Running with thin diamond
   • Beam tune, fast raster scan, and low current AC lock test
5. AOB
   • Mark D. takes over as RC