Sep 17, 2022

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:

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 Meeting ID: 160 710 0885
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 Meeting ID: 160 710 0885
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Useful Links

• Condensed CaFe Run Plan
• CaFe Run Plan
• Hall-C Controls
• Hall-C Logbook
• MCC White Board

Current Status

• Harp Scans completed (Sep 16 Swing) IHA3H07A --> https://logbooks.jlab.org/entry/4042622 | IHA3H07B --> https://logbooks.jlab.org/entry/4042625
• Downstream beamline valve was shutoff --> https://logbooks.jlab.org/entry/4042671 The issue was resolved by Hall C techs today at 7AM
• Currently receiving tune beam

Current Run Plan

• page 4 of CaFe Run Plan

• Resume beam tune to Hall C / Ion Chamber calibration with "No target" ( DONE )
• Do "Aluminum Hole" check to center BEAM on target ( DONE )
• Do Ion Chamber calibration for solid (using Thorium, 6% R.L.), and cryotargets (LH2, LD2) ( IN-PROGRESS )
• Ramp back up SHMS magnets to do trigger checkout using LH2 ( PENDING )
• Do SHMS Hodo HV test / proton absorption / heep normalization ( PENDING )
• Proceed to CaFe production @ mean-field kinematics for all targets ( PENDING )
• Proceed to CaFe production @ src kinematics for all targets ( PENDING )

• Whenever MCC is able to deliver 70-75 uA stable beam current:
  • coordinate with D. Mack to do BCM calibrations ( PENDING )
  • do Target Boiling study whenever we have LD2 target in place (to save time of having to do target changes) ( PENDING )

Notices in Effect for Shift Crew

• Instructions for moving the target to "Hole" ---> https://logbooks.jlab.org/entry/4042703

Current Issues

• Target is unbale to move to "Hole" position, encoder position has to be put in by hand. D. Meekins / C. Keith currently working on diagnosis. All other targets were tested, and motion was verified.
• During shift checklist, Holly noticed some minor issues --> https://logbooks.jlab.org/entry/4042694