December 6, 2023

RC Meeting Information

RC Daily Meetings are at 11:00 (am) via Zoom and in person in the counting house meeting room (2nd floor)

• Zoom remote connection information: https://logbooks.jlab.org/entry/4229331

Useful Links

• Shift Signup (Read only)
  • Shift Signup

• Hall-C Controls
• Hall-C Logbook
• MCC White Board

Current Status

• Re-establishing beam last night was fairly straightforward.
  • Harp scan: https://logbooks.jlab.org/entry/4230234
  • Carbon hole: https://logbooks.jlab.org/entry/4230269
  • YAG viewer not working
• Target was ready so we proceeded with run plan
  • Injector expert called back in because MCC for some reason thought we didn't need high current (>5-10uA)
  • Discovered that the HMS DC had no gas due to having been tripped by someone shutting off the fan in the HMS hut. This likely happened this morning when we think facilities was investigating the AC issue here: https://logbooks.jlab.org/entry/4230022. This interlock is a bit scary because we didn't have a lot of other strong indications, and we had no problem running the HV. Unfortunately, we had to spend a couple hours recovering the chambers.

Current Run Plan

• Moller measurement on day shift
• Continue run plan: https://hallcweb.jlab.org/wiki/index.php/Short_Term_Run-Plan

Notices in Effect for Shift Crew

• All shifts should come in as planned.
• Heidi on vacation 7-13 Dec. Contact Steve L for cryo during that time.
• cc Heidi on any cryo logbook entry (fansler@jlab.org)