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

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#* When adjusting a procedure, please contact the expert before doing so to make sure the changes you make are okay.  
 
#* 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.
 
#* ~1hr 20 mins of DAQ issues while the target was filling and we could not run in raw mode.
 +
#* [https://logbooks.jlab.org/entry/3559321 PS scalers] (Alexandre)
 +
 
# Reports:
 
# Reports:
 
#* [https://logbooks.jlab.org/entry/3558945 Correlation between beam Y position and CDC HV current] (Beni)
 
#* [https://logbooks.jlab.org/entry/3558945 Correlation between beam Y position and CDC HV current] (Beni)
 
#* [https://logbooks.jlab.org/entry/3559014 Attenuation lengths] (Lubomir)
 
#* [https://logbooks.jlab.org/entry/3559014 Attenuation lengths] (Lubomir)
 
#* [https://logbooks.jlab.org/entry/3559057 PS acceptance from TAC run with 1/3 of data] (Sasha)
 
#* [https://logbooks.jlab.org/entry/3559057 PS acceptance from TAC run with 1/3 of data] (Sasha)
−
#* [https://logbooks.jlab.org/entry/3559321 PS scalers] (Alexandre)
+
#* [https://logbooks.jlab.org/entry/3559309 Low Level Monitoring Report] (Thomas)
−
#* [https://logbooks.jlab.org/entry/3559309 Low Level Monitoring Report]
+
 
# Run Plan
 
# Run Plan
 
#* Pass change this morning
 
#* Pass change this morning
 
#** Short access to install copper and tungsten shields
 
#** Short access to install copper and tungsten shields
 +
#** Move muon chamber back into beam line
 
#* Production running
 
#* Production running
 
#** Harp scan when beam comes back
 
#** Harp scan when beam comes back
Line 30: Line 32:
 
== Friday, April 13 at 08:45 ==
 
== Friday, April 13 at 08:45 ==
 
# Notes from the previous 24 hours:
 
# 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
 +
#* [https://logbooks.jlab.org/entry/3559451 Muon chamber installed with the steel bar]
 +
#* [https://logbooks.jlab.org/entry/3559446 New radiator on GEM TRD]
 +
#* [https://logbooks.jlab.org/entry/3559412 Shields installed on profiler]
 
#Issues:
 
#Issues:
−
#*  
+
#* Bill noticed some minor inconsistencies with monitoring plots (beta vs. p, beam energy, and trigger bit)
 
# Reports:  
 
# Reports:  
−
#*  
+
#* [https://logbooks.jlab.org/entry/3559655 Harp scan] (Hovanes)
 +
#* [https://logbooks.jlab.org/entry/3559691 Materials scan] (Lubomir)
 +
#* [https://logbooks.jlab.org/entry/3559958 Low level monitoring] (Thomas)
 
# Run Plan
 
# 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)
 +
#* [https://halldweb.jlab.org/wiki/index.php/File:Spring18_week14.jpg Production and switching to the thin diamond next week]
 +
 
 
# AOB
 
# 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 ==
 
== Saturday, April 14 at 08:45 ==
 +
No meeting
 +
 
== Sunday, April 15 at 08:45 ==
 
== Sunday, April 15 at 08:45 ==
 +
No meeting
 +
 
== Monday, April 16 at 08:45 ==
 
== Monday, April 16 at 08:45 ==
 +
# Notes from the previous 48 hours:
 +
#* Accelerator ran OK this weekend- downtime events every shift
 +
#* [https://logbooks.jlab.org/entry/3560156 Low current AC test delayed due to voltage adapter problem.] Tentative postponement until Wednesday?
 +
 +
#Issues:
 +
#* [https://logbooks.jlab.org/entry/3560256 Low yield of physics signals] (Mark D.)
 +
#** [https://logbooks.jlab.org/entry/3560621  Larger variations in detector timing than normal] (Sean)
 +
#** [https://logbooks.jlab.org/entry/3560651 Range of interesting timing features] (Mark D.)
 +
#* [https://logbooks.jlab.org/entry/3561130 Newly inefficient PS channel] (Dave)
 +
#* [https://logbooks.jlab.org/entry/3561374 Trouble putting rootspy histograms in logbook] (Mark I.)
 +
#** We will not tolerate identity theft
 +
#* [https://logbooks.jlab.org/entry/3561601 Transmission last night] (Beni)
 +
#Reports
 +
#*[https://logbooks.jlab.org/entry/3560188 New preamp (and calibration) fixes noisy CDC channels] (Naomi)
 +
#*[https://logbooks.jlab.org/entry/3560023], [https://logbooks.jlab.org/entry/3560036], [https://logbooks.jlab.org/entry/3560023 (Revised entry)] Figure of merit vs. virtual electron spot size (Justin)
 +
#*[https://logbooks.jlab.org/entry/3561136 Sunday's harp scan] (Hovanes)
 +
#* [https://logbooks.jlab.org/entry/3561327 PS baselines adjusted] (Sasha)
 +
#* [https://logbooks.jlab.org/entry/3561535 Low level monitoring] (Thomas)
 +
# 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
 +
 +
# AOB
  
 
== Tuesday, April 17 at 08:45 ==
 
== Tuesday, April 17 at 08:45 ==
 +
# Notes from the previous 48 hours:
 +
#* Reinstalled 50 micron W and removed Cu shields
 +
#* [https://logbooks.jlab.org/entry/3561679 Active collimator voltage adapters repaired]
 +
#* 9 FCAL bases replaced
 +
#* Sean let me know he was checking on calibrations
 +
#* Trickles of beam at 6 pm
 +
 +
#Issues:
 +
#* [https://logbooks.jlab.org/entry/3561700 Noisy CDC channel] (Naomi)
 +
#* [https://logbooks.jlab.org/entry/3561979 TAGH volatages not turned off after TAC run], [https://logbooks.jlab.org/entry/3561878 PS baselines adjusted] (Sasha)
 +
#Reports
 +
#* [https://logbooks.jlab.org/entry/3561920 Materials Scan] (Lubomir)
 +
#* [https://logbooks.jlab.org/entry/3561887 Harp scan] (Hovanes)
 +
#* [https://logbooks.jlab.org/entry/3562167 Low level monitoring] (Thomas)
 +
 +
# 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
 +
 +
# AOB
  
 
== Wednesday, April 18 at 08:45 ==
 
== Wednesday, April 18 at 08:45 ==
 +
# Notes from the previous 48 hours:
 +
#* Moved AC to 3.5 mm collimator
 +
#* RF recovery took longer than expected
 +
#* Last night once we got beam back, it was seen that we could not lock on the AC. We went into controlled access and have a radcon escort into the collimator cave so Alex B. could fix AC. He first thought it was the traditional voltage adapter problem, but it turned out to be a cable issue.
 +
#Issues:
 +
#* [https://logbooks.jlab.org/entry/3562479 Goniometer unresponsive- vertical stage trip]
 +
#* [https://logbooks.jlab.org/entry/3562539 Cable issue on AC] (Alex B.)
 +
#* Another issue with the AC lock: Notice that the Active Collimator (AC) lock is not on. MCC tells us that the AC is showing an invalid status and cannot be used for beam locking.
 +
#** Concern that the optimal AC position lock for the 3.4 mm collimator may not be the same as that for the 5 mm collimator.
 +
#**Beam position was checked with the gamma profiler, even though there is no radiator plate attached. Rates look OK.
 +
#** After tests look OK, the crew decided to go ahead with the program, trusting that the AC lock is roughly centers the beam on the 3.4 mm collimator.
 +
#* [https://logbooks.jlab.org/entry/3562653 Coffee maker broken] (Mark I.)
 +
#* [https://logbooks.jlab.org/entry/3562372 Noisy CDC channel]
 +
#Reports
 +
#* [https://logbooks.jlab.org/entry/3562185 Electron beam energy monitoring] (Alexandre)
 +
#* [https://logbooks.jlab.org/entry/3562382#comment-14949 1], [https://logbooks.jlab.org/entry/3562360 2] (Sean)
 +
#* [https://logbooks.jlab.org/entry/3562745 Low level monitoring] (Thomas)
 +
#* [https://logbooks.jlab.org/entry/3562677 Run conditions at 3.4 mm collimator] (Sasha)
 +
#* [https://logbooks.jlab.org/entry/3562783 Radiation monitors for thin diamond] (Alexandre)
 +
#* [https://logbooks.jlab.org/entry/3562782 TAGH and TAGM rates constant with previous running](Mark D.)
 +
# Run Plan
 +
#* Running with thin diamond
 +
#** With Sasha on shift last night, it was decided to run by normalizing to PS rates
 +
#** Do not run above 500nA until some counters are turned off
 +
#* What else would we like to do with the thin diamond?
 +
#* Beam tune, fast raster scan, and low current AC lock test?
 +
#AOB
 +
#* Mark D. takes over as RC

Latest revision as of 08:42, 18 April 2018

<- Back to Run Coordination Meetings:Fall2017 Spring2018 Run

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:
  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:
  2. Issues:
    • Bill noticed some minor inconsistencies with monitoring plots (beta vs. p, beam energy, and trigger bit)
  3. Reports:
  4. Run Plan
  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:
  1. Issues:
  2. Reports
  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:
  1. Issues:
  2. Reports
  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
    • RF recovery took longer than expected
    • Last night once we got beam back, it was seen that we could not lock on the AC. We went into controlled access and have a radcon escort into the collimator cave so Alex B. could fix AC. He first thought it was the traditional voltage adapter problem, but it turned out to be a cable issue.
  2. Issues:
    • Goniometer unresponsive- vertical stage trip
    • Cable issue on AC (Alex B.)
    • Another issue with the AC lock: Notice that the Active Collimator (AC) lock is not on. MCC tells us that the AC is showing an invalid status and cannot be used for beam locking.
      • Concern that the optimal AC position lock for the 3.4 mm collimator may not be the same as that for the 5 mm collimator.
      • Beam position was checked with the gamma profiler, even though there is no radiator plate attached. Rates look OK.
      • After tests look OK, the crew decided to go ahead with the program, trusting that the AC lock is roughly centers the beam on the 3.4 mm collimator.
    • Coffee maker broken (Mark I.)
    • Noisy CDC channel
  3. Reports
  4. Run Plan
    • Running with thin diamond
      • With Sasha on shift last night, it was decided to run by normalizing to PS rates
      • Do not run above 500nA until some counters are turned off
    • What else would we like to do with the thin diamond?
    • Beam tune, fast raster scan, and low current AC lock test?
  5. AOB
    • Mark D. takes over as RC
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