Run Planning Meeting Notes, September 10 - 16, 2020

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Integrated trigger count

GlueX Statistics Run Sheet


MEDCON 5 restrictions (Bob May email)

  1. adhere to counting room capacity restrictions
  2. maintain 6 ft. separation (briefly passing another person inside 6 ft. while moving about the counting room is inevitable and is OK)
  3. wear masks anytime more than one person present in the counting room
  4. at MEDCON 5 the lab has no cafeteria services because eating "cafeteria style" (eating in common from prepared food) is inconsistent with COVID-19 controls. Staging food in the counting room to share is inconsistent with MEDCON 5 COVID-19 controls.
  5. food and drink consumption - because it requires removing face coverings to consume - should be limited to packaged food and drink brought for personal use that is consumed while maintaining at least 6 ft. from the nearest person and ideally, consumed in a separate room from others.

Wednesday, September 16 at 8:45

  1. Last 48 hours:
    • Production
    • On Monday:
      • Gluex Production from 6am-10am. Then 2h of beam study,
      • Production resumed from noon to 2:20pm when the beam went down due to power supply failure in the injector. When beam came back (6pm), it was used for 5:30h of beam study.
      • Production resumed at 23:30.
    • On Tuesday:
      • Production until 7:45am when South Linac went down due to cryo problem (compressor 4 controller problem in SL CHL). Production resumed at 21:50. Meanwhile Beni did ST efficiency runs and cosmic runs.
  2. Accesses:
        • Monday 10am: Vladimir Berdnikov (PS area)
        • Monday 10am, tagger vault. Josh F.
        • Monday 4:15pm: Lubomir and Kondo (PS area, 1-2h), to install and check a HV module for the GEM setup.
        • Monday Vladimir and Alex Somov, in the PS area (other side).
  3. Reports/issues:
  4. Run plan
    • Continue production runs
    • Friday Sept. 18th, 6am: Hall C pass change from 5 to 1 pass. We should request to run on our own slit.
    • Next RC meetings at 8:30am?
    • Special tasks remaining:
      • Periodic harp scans (last one done on Sept. 5th). The rates and transmission have been stable
      • Check CCal active basis with 2nA beam. 2h. A. Somov. To be scheduled when Hall C is at 1-pass, Hall A is down and we have our own slit.
      • Pair Spec. test. 1h. A. Somov. After the CCal check.

Monday, September 14 at 8:45

  1. Last 72 hours:
    • Production
    • On Friday:
      • After being down since 2am (vacuum issue), the beam came back at 9am and a empty target run started (target was emptied during the beam down time). Beam down after 30min due to NLvacuum issue and 5th pass separator issue. Beam came back at 15:15. Another empty target run (1h+) was taken and then production resumed.
      • During beam down time, Kondo accessed the Hall to install a new power supply for a GEM (PS area).
    • Saturday: production
      • Beam off from 4pm to 6:30pm due to Klystron change. Sergey accessed the Hall for GEM/TRD work.
    • Sunday:
      • Owl, 1am: scheduled Raster test (Richard Jones. Mike McCaughan). Beam went down at 1:12am, (Chopper + 2L13 issues) and the test had to be postponed. Beam came back at about 4pm.
      • swing: A. Somov worked on SRC trigger fine tuning. Started data taking with SRC trigger at 11pm until rather test at 3:45am next day.
    • Monday:
  2. Reports/issues:
  3. Run plan
    • Continue production runs
    • Monday Sept. 14th: beam study.
      • 10am - 11am/noon: beam study (access to hall allowed).
      • 11am - 16:15: physics beam.
      • 16:15 - 21:15: beam study (access to hall allowed).
      • Access list:
        • 10am: Vladimir Berdnikov (PS area, 1h)
        • 10am, tagger vault. Josh F.
        • 4:15pm: Lubomir and Kondo (PS area, 1-2h), to install and check a HV module for the GEM setup.
    • Friday Sept. 18th, 6am: Hall C pass change from 5 to 1 pass. We should request to run on our own slit.
    • Special tasks remaining:
      • Periodic harp scans (last one done on Sept. 5th). The rates and transmission have been stable
      • Beam rastering test
      • Check CCal active basis with 2nA beam. 2h. A. Somov. To be scheduled when Hall C is at 1-pass, Hall A is down and we have our own slit.

Friday, September 11 at 8:45

  1. Last 24 hours:
    • Production, but RF recovery+NL troubles+vacuum issue resulted in only about 6h of useable beam.
    • Hall accesses by Lubomir (to reset a crate) and Mark D. (to fix non-working BCal pulser) during scheduled beam down time.
    • Hall access by Vladimir Berdnikov (PS area) to reinsert crystals and check communication.
  2. Reports/issues:
  3. Run plan
    • One last empty target run (2h) (current diamond radiator config., 350 nA)
    • Continue production runs
    • SRC trigger fine tuning + taking data with SRC trigger. 1 shift (Saturday swing). A. Somov
    • Monday Sept. 14th: 10am-16:00: 6h of beam study.
    • Tuesday Sept. 15th: due to All Hand Meeting at 9am, RC meeting is cancelled (unless something important happens).
    • Thursday or Friday Sept. 17th/18th: Hall C pass change from 5 to 1 pass. We should request to run on our own slit.
    • Special tasks remaining:
      • Periodic harp scans (last one done on Sept. 5th). The rates and transmission have been stable
      • Beam rastering test
      • Check CCal active basis with 2nA beam. 2h. A. Somov. To be scheduled when Hall C is at 1-pass, Hall A is down and we have our own slit.

Thursday, September 10 at 8:45

  1. Last 24 hours:
    • Production, with beam available for most of the day. A lot of beam trips however, which will be taken care of by impromptu RF recovery tomorrow.
  2. Reports/issues:
  3. Run plan
    • Continue production runs
    • Large amount of beam trips due to Hall A beam steering problem. Beam will be down at (tentatively) 9am today for an expected 1 or 2h to address the problem.
    • Tuesday Sept. 15th: 3h of beam study expected
    • Thursday or Friday Sept. 17th/18th: Hall C pass change from 5 to 1 pass
    • Special tasks remaining:
      • Beam rastering test
      • Periodic harp scans (last one done on Sept. 5th). The rates and transmission have been stable
      • Empty target run?