RC meeting and Run Plan, Friday Nov. 17, 2023

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RC Meeting Information

Time: Monday - Friday at 3:30pm

  • Location: Counting house conference room
  • ZoomGov Meeting Connection Information

https://sbs.jlab.org/cgi-bin/DocDB/private/ShowDocument?docid=431

Useful Links

Procedures

Hall A call-in instructions:

  • Call RC first.
  • Techs on site 7am-4:30pm Mon-Thu, 7-11am Fri. RC will call Hall A work coordinator (Zak) during normal working hours. After hours, RC calls Tech on-call.
  • After 9 pm everything non-emergency needs to be deferred. What is an emergency and what's not? Call RC. RC talks with Mark to decide.

Hall Access procedure:

  • The Access checklist (binder on the counting room desk) needs to be filled out before making *any* access.
  • Scan (take pictures with phone) and post it to the logbook.
  • Any work inside the SBS, BB boundary needs to have PS locked out -- requires two QEWs to throw the big switch. Exception: field measurements.

Status Update

Overall Summary

General

Here are some notable things/issues that have happened since yesterday:

  • The SL for the last Swing and Owl shift were canceled. Today's Day's SL is in standby mode. TO reported since the last swing - the magnets and target LASER were on. Thanks to Jimmy, Eric, and Jackson for signing up for the shift on short notice.
  • Kate took cosmic runs with magnets on and produced HVs for production - Production HV settings
  • One hodoscope HV channel tripped -(halog entry from Jimmy) Gary is looking into it
  • Bill Henry performed a preliminary EPR calibration- EPR from Bill
  • A further look on EPR calibration by Jackson- EPR from Jackson
  • Hunter is at the CH to perform the FINAL EPR calibration

Hopefully, by then the 2L22 cryomodule work will be complete.

We projected to start at some time in the swing at the earliest.

  • The run plan from the spokesperson is attached.
  • Hall C is planning to perform a Moller measurement either Saturday or Monday. MCC doesn't prefer simultaneous Moller measurements in Hall A and C. So, we have to plan accordingly for the Moller measurement.
  • Yesterday, I contacted Ellen regarding whether BB magnet polarity can be changed remotely or not - her answer was NO. So, we should plan accordingly when to change polarity.


Shift Plan

Beam

  • None!

Hall A Dump Repair

  • There was no sign of water inside any of the electrical panels
  • The main pump was turned on yesterday. Everything looks okay.
  • Today, there are a couple of hours for work to pump ~180 gal of water from the sump area in building 91 to a storage tank.
  • After that, we most likely get the Beam authorization in the hall.


Accelerator status

  • Unfortunately, we didn't get authorization for the CW beam in Hall A yesterday swing - Beam Authorization
  • Even if we had beam authorization, there would not have been any beam in the hall overnight due to the 2L22 cryomodule issue - 2L22 Cryomodule issue

    • Data collected :

    None!

    Hall A Subsystems Status

    Target

    • Ready

    Detectors

    Magnets

    • SBS and BB are ready to turn on.

    Hall access requests

    We are in power permit.

    Shift schedule

    IMMINENT OPEN SHIFTS

    • The shift schedule is very empty for the next 2 weeks. Please sign up if you can!!

    Please check when your shifts are!

    https://misportal.jlab.org/mis/physics/shiftSchedule/?experimentRunId=SBS-GEn-2022

    Please sign up for any open shifts!

    Running Plan

    • Restore the beam as soon as we can!

    ==> List of items in case He3 production running isn’t ready:

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