[Sbs] [New Logentry] Hall-A RC Update April 21, 2025

[adr at jlab.org]

Logentry Text:
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<p>Dear Collabortors,<br><br>We have been continuing taking production data since yesterday day shift pretty smooth. Right now the accelerator is down and it is not entirely clear when we will be back up again. Following is the progression of most important things happened starting yesterday day shift:</p><ul><li>We were continuing to take production data at 8 uA for most of the day shift. </li><li>At early swing shift, Jhih-Ying and Kip found a bug in their code they used to calculate the new ECal HV settings Friday. So they fixed it: https://logbooks.jlab.org/entry/4361855</li><li>After the new HV settings were implemented, ECal rate went down and we increased the beam current to 12 uA.</li><li>Mark decided to stay at 12 uA over night - he decreased the ECal threshold for get our trigger rate up: https://logbooks.jlab.org/entry/4361910</li><li>We continued taking production data at 12 uA over the OWL shift. Some DAQ trouble as usual. </li><li>Don took an opportunistic acces
 s right 
 now to re-start ECal AC.</li></ul><p>Plans for today:</p><ul><li>Accelerator is down right now. But the issue seems to be resolved. We are in the process of going back to beam permit right now.</li><li>Ben will do the firmware update for ECal and HCal VTPs and we plan to start using the coin-match trigger soon. After that, we wil increase the beam current step by step and hopfully run at a higher beam current (TBD) and will be collecting good elastic events at a higher rate.</li></ul><p>We will have RC meeting today at 1:00 pm in the meeting roon on the 2nd floor of the Counting Hourse and via Zoom: <a href="https://jlab-org.zoomgov.com/j/1616220064">https://jlab-org.zoomgov.com/j/1616220064</a><br>Meeting ID: 161 622 0064<br> Passcode: 314159<br><br>Wiki page: https://sbs.jlab.org/wiki/index.php/RC_meeting_and_Run_Plan,_Monday,_April_21st<br><br>Best regards,<br>Anuruddha Rathnayake<br>Hall-A RC.</p>

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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/4362267
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