[Hallc_running] [New Logentry] RC Report: Sunday, August 14

mdiefent at jlab.org mdiefent at jlab.org
Sun Aug 14 17:50:01 EDT 2022


Logentry Text:
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<p><strong><span style="font-family: Helvetica; font-size: 12px;">Per Aspera Ad Astra: RC Report August 13-14</span></strong><br style="font-family: Helvetica; font-size: 12px;"><br style="font-family: Helvetica; font-size: 12px;"></p><p><strong><span style="font-family: Helvetica; font-size: 12px;">Accelerator Status</span></strong></p><ul><li><span style="font-family: Helvetica;"><span style="font-size: 12px;">Nothing new to report. </span></span></li></ul><p><br style="font-family: Helvetica; font-size: 12px;"><strong><span style="font-family: Helvetica; font-size: 12px;">Experimental Status</span></strong></p><ul><li><span style="font-family: Helvetica; font-size: 12px;">Problems with spectrometer rotation (</span><span style="font-family: Helvetica; font-size: 12px;">https://logbooks.jlab.org/entry/4028616</span><span style="font-family: Helvetica; font-size: 12px;"> , </span><span style="font-family: Helvetica; font-size: 12px;">https://logbooks.jlab.org!
 /entry/4028617</span><span style="font-family: Helvetica; font-size: 12px;">). Joe Beaufait and Eric</span><span style="font-family: Helvetica; font-size: 12px;"> fixed the problem. Lost almost three hours of data taking. </span></li><li><span style="font-family: Helvetica; font-size: 12px;">SHMS Q2 interlock (</span><span style="font-family: Helvetica; font-size: 12px;">https://logbooks.jlab.org/entry/4028669</span><span style="font-family: Helvetica; font-size: 12px;">). Lost almost 1.5 hours of data taking. </span></li></ul><p><br style="font-family: Helvetica; font-size: 12px;"><strong><span style="font-family: Helvetica; font-size: 12px;">Data taking for the Pion-LT experiment (E12-19-006) with a beam energy of 8.487 GeV</span></strong></p><ul><li><span style="font-family: Helvetica; font-size: 12px;">Data taking for the Q2 = 3.85 GeV^2, W = 3.07 GeV, x = 0.31 low epsilon setting: </span></li><ul><li><span style="font-family: Helvetica; font-size: 1!
 2px;">Completed data taking for SHMS right (theta = 5.50 degre!
 es) and SHMS center configurations (theta = 7.47 degrees) in the last days. </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Lowered statistics goal for the SHMS left configuration (theta = 9.47 degrees) from 16,500 coincidence events to 12,000. </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Completed data taking in this configuration during owl shift. </span></li></ul><li><span style="font-family: Helvetica; font-size: 12px;">Data taking for the Q2 = 2.45 GeV^2, W = 3.20 GeV, x = 0.21 middle epsilon setting. </span></li><ul><li><span style="font-family: Helvetica; font-size: 12px;">Lowered statistics goal for the SHMS left configuration (theta = 8.93 degrees) from 17850 coincidences to about 14,000 coincidences. </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Completed data taking in this configuration during day shift. </span></li></ul><li><span style="font-family:!
  Helvetica; font-size: 12px;">Completed data taking for the heep-check coincidence runs. </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Ongoing data taking for the calibrations runs with SHMS at negative polarity. </span></li></ul><p><br style="font-family: Helvetica; font-size: 12px;"><strong><span style="font-family: Helvetica; font-size: 12px;">Instructions for shift crew </span></strong></p><ul><li><span style="font-family: Helvetica; font-size: 12px;">Regarding the insulating vacuum alarms for the SHMS: Please read the instructions from Heidi Fansler: </span><span style="font-family: Helvetica; font-size: 12px;">https://logbooks.jlab.org/entry/4028513</span><span style="font-family: Helvetica; font-size: 12px;"> </span></li></ul><p><br style="font-family: Helvetica; font-size: 12px;"><strong><span style="font-family: Helvetica; font-size: 12px;">Planning </span></strong></p><ul><li><span style="font-family: Helvetic!
 a; font-size: 12px;">Monday, August 15, at 8:00 a.m. (EDT), we will hav!
 e a controlled access of up to six hours for the aerogel exchange. </span></li><li><span style="font-family: Helvetica; font-size: 12px;">This might be an opportunity to work on the HMS Q2 LH2 temperature sensor (</span><span style="font-family: Helvetica; font-size: 12px;">https://logbooks.jlab.org/entry/4028490</span><span style="font-family: Helvetica; font-size: 12px;">). </span></li><li><span style="font-family: Helvetica; font-size: 12px;">In preparation of the controlled access, we have requested a radiation survey at 7:00 a.m. (EDT). </span></li><li><span style="font-family: Helvetica; font-size: 12px;">The pass change will be moved from Tuesday, August 16, to Wednesday, August 17. </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Starting from August 17, we need volunteers for shifts: </span><span style="font-family: Helvetica; font-size: 12px;">https://misportal.jlab.org/mis/apps/physics/shiftSchedule/index.cfm?ex!
 perimentRunId=HALLC-PIONLT-2022</span><span style="font-family: Helvetica; font-size: 12px;"> </span></li><li><span style="font-family: Helvetica; font-size: 12px;">We will have a Hall C RC meeting on Monday, August 15, at 11:00 a.m. (EDT). </span></li></ul>

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