[Hallc_running] [New Logentry] RC update, Feb. 27, 2024

[sanghwa at jlab.org]

Logentry Text:
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Yesterday we took DIS singles runs with LH2, LD2, Dummy targets until 1pm. The Carbon runs will need to be taken before we switch to the Positron data today. After the DIS data taking, we did Faraday cup measurements + out regular BCM calibrations.

Summary of BCM calibrations:
https://logbooks.jlab.org/entry/4257267 (Faraday cup measurments)
https://logbooks.jlab.org/entry/4257273 (BCM calibrations)

After the BCM calibrations at around 4pm, we took an escorted access to check the NPS crate temperatures as a couple of crates were reporting relatively higher temperature (~95F). During the access, we confirmed that the AC is working and placed box fans for those crates (https://logbooks.jlab.org/entry/4257294). 

We brought the hall back to beam permit around 4:30pm and took two 30min runs of 16uA LH2 data (4712, 4713) before we go back to the production data taking. We finished the second cycle of the production (first one with 8uA on LD2) during the owl. 
At around 7am, West arc box supplies dropped out and we lost the beam since then. The issue has been addressed, and MCC told us that they will be able to recover the beam to us soon.

Tomorrow we have Maintenance + Beam studies. MCC will turn off the beam at 7am. In the current schedule, the Maintenance work will be done by around noon and the beam study is scheduled until 21:00pm. 
We will go to controlled access tomorrow morning. RadCon will send someone to survey the hall after they are done with NL and SL surveys. The later part of the beam study includes sending CW and tune beam to Hall C. We will wrap up the access and bring the hall to beam permit before around 4pm. The schedule can be shifted a bit depending on how maintenance work goes during the day.

Access requests in the hall:
- NPS: Julie, Josh, Aaron to look at the temperature read back issue (3 keys almost whole access?)
- Walk-thru at 1pm: Joe + 5 FIU students (6 keys)
- Heidi: checking HMS dipole, needs one hour
- Bill: SHMS hut temperature sensor replacement 

Please let the RC know if you have any work to be done in the hall.

Other notes:
- Bill added NPS crate temperatures to MUNIN: https://hallcweb.jlab.org/munin/crates_det-day.html
- Hall temperature reading frozen in MUNIN: https://logbooks.jlab.org/entry/4257295

Daily RC meeting at 11am:
Zoom connection link:
https://jlab-org.zoomgov.com/j/1617015555?pwd=L09IQ216dml6ZmM5ODExVjFsMX
Meeting ID: 161 701 5555
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/4257619
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