[Hallc_running] [New Logentry] RC Report: Friday, August 12
mdiefent at jlab.org
mdiefent at jlab.org
Fri Aug 12 18:50:02 EDT 2022
Logentry Text:
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<p><strong><span style="font-family: Helvetica; font-size: 12px;">Resuming Production Running: RC Report August 11-12 </span></strong><br style="font-family: Helvetica; font-size: 12px;"><br style="font-family: Helvetica; font-size: 12px;"><strong><span style="font-family: Helvetica; font-size: 12px;">Accelerator Status</span><span style="font-family: Helvetica; font-size: 12px;"> </span></strong></p><ul><li><span style="font-family: Helvetica; font-size: 12px;">Recovery from Maintenance Day took until the end of swing shift on August 11. </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Energy measurement during day shift on August 12. Beam energy is 8.4786 GeV</span><span><span style="color: #313131; font-family: 'Trebuchet MS', 'Helvetica Neue', Arial, Helvetica, sans-serif;"><span style="caret-color: #313131; font-size: 14px;"> </span></span><span style="font-family: Helvetica;"><span style="font-size: 12px;">(https://logbooks.jla!
b.org/entry/4027952). </span></span></span></li><li><span style="font-family: Helvetica; font-size: 12px;">Bleed through is a significant problem for Hall B (https://logbooks.jlab.org/entry/4027979). Work on bleed through affects production running for Hall C. </span></li></ul><div><span style="font-family: Helvetica;"><span style="font-size: 12px;"><br></span></span></div><p><strong><span style="font-family: Helvetica; font-size: 12px;">Experimental Status</span></strong></p><ul><li><span style="font-family: Helvetica;"><span style="font-size: 12px;">In the current configuration, we are rate limited to a beam current of about 38 uA. As part of the work on the bleed through, the shift crew accepted beam current of 80uA without the moving target out and stopping the run. SHMS HB tripped and was restored about two hours later. </span></span></li></ul><div><span style="color: #313131; font-family: 'Trebuchet MS', 'Helvetica Neue', Arial, Helvetica, sans-ser!
if;"><span style="caret-color: #313131; font-size: 14px;"><br>!
</span></span></div><p><strong><span style="font-family: Helvetica; font-size: 12px;">Data taking for the Pion-LT experiment (E12-19-006) </span></strong><span style="font-family: Helvetica; font-size: 12px;"><strong>with a beam energy of 8.487 GeV</strong></span></p><ul><li><span style="font-family: Helvetica; font-size: 12px;">Currently taking data for the Q2 = 3.85 GeV^2, W = 3.07 GeV, x = 0.31 low epsilon setting.</span><span style="font-family: Helvetica; font-size: 12px;"> </span></li><li><span style="font-family: Helvetica; font-size: 12px;">In the current HMS and SHMS configuration, we are rate limited and aim for a beam current of 35-38 uA.</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><span style="font-family: Helvetica; font-size: 12px;"> </span></strong></p><ul><li><span style="!
font-family: Helvetica; font-size: 12px;">Summary of run plan: </span><span style="font-family: Helvetica; font-size: 12px;">https://logbooks.jlab.org/entry/4027584</span><span style="font-family: Helvetica; font-size: 12px;"> </span></li><li><span style="font-family: Helvetica; font-size: 12px;">Starting from Friday, August 19, we need volunteers for shifts: </span><span style="font-family: Helvetica; font-size: 12px;">https://misportal.jlab.org/mis/apps/physics/shiftSchedule/index.cfm?experimentRunId=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 Saturday, August 13, at 11:00 a.m. (EDT).</span><span style="font-family: Helvetica; font-size: 12px;"> </span></li></ul>
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