[Hallc_running] [New Logentry] RC Update

chandan at jlab.org chandan at jlab.org
Mon Apr 22 10:05:01 EDT 2024


Logentry Text:
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We have been taking data smoothly while the beam was available. Here are some notable things that have happened since yesterday, and the short-term run plan:
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<ul>
<li> Julie and Josh took escorted access to refill the chiller. They discovered some signs of water leakage from the chiller. We are planning to go to controlled access to work on the chiller at 10 am. <a href="https://logbooks.jlab.org/entry/4285670"> Chiller refilling </a> </li>
<li>Just after midnight, the cryo-target temperature went close to boil-off. The alarm handler didn’t give any alarm. Opened the JT values and temperature became stable. If you are TO, please check the TO GUI often. Will work with the target experts to find the reason. <a href="https://logbooks.jlab.org/entry/4285913"> Target problem </a></li>
<li>Shift workers during owl noticed that few NPS temperature shifts drastically. <a href="https://logbooks.jlab.org/entry/4285982"> Chiller temperature shift</a> </li>
<li>While we were taking data and planning to survey the Hall around 10 am, the chiller stopped controlling the temperature. Requested RadCon to start the survey as soon as they can. <a href="https://logbooks.jlab.org/entry/4286178"> chiller stopped working</a> </li>
<li>Here are the last three shift summaries from <a href="https://logbooks.jlab.org/entry/4285250"> yesterday's day </a>, <a href="https://logbooks.jlab.org/entry/4285643"> yesterday's swing </a>, and <a href="https://logbooks.jlab.org/entry/4285894"> and today's owl </a>. ABU for last 24 hours - 18.4 hours (up time 22.1 hours).</li>



<li> <FONT COLOR=" #ff0000"> Tomorrow and Wednesday day shift TO slots are open. Please sign up if you can. <a href="https://misportal.jlab.org/mis/apps/physics/shiftSchedule/index.cfm?experimentRunId=DVCS-NPS-2023"> Shift signup page </a></li>
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Updates from 8 am MCC meeting:
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<ul>
<li> Pass change tomorrow -starting at 9 am.</li>
<li> Beam studies are scheduled for Thursday. Hall C is not required for this. Hall may get some beam during this time if we want.</li>
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We will have a regular RC meeting at 11:00 am today in the CH conference room.
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People can join remotely via:
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<a href="https://jlab-org.zoomgov.com/j/1617015555?pwd=L09IQ216dml6ZmM5ODExVjFsMX"> Zoom link </a>
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Meeting ID: 161 701 5555
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Passcode: 288953
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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/4286194
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