2021-08-04

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Meeting Information

Connecting

To connect to the meeting, please do the following: Time: Wednesday at 9:00 AM EST.

  1. To join via a Web Browser, go to the page [1] https://bluejeans.com/984025598.
  2. To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 984025598.
  3. To join via phone, use one of the following numbers and the Conference ID: 984025598.
    • Dial Either +1 408 740 7256 or +1 888 240 2560 for US or Canada

Agenda

Schedule

Comments from Matt

Long Term Schedule: Gantt (Outstanding tasks)

  1. 8/9/21 Start Hot Check-out
  2. 8/16/21 Start commissioning (2 weeks)
  3. 8/30/21 Perform experiment (2 weeks)
  4. Booster qualification following experiment until cryo trade to CMTF

New items for discussion:

General:

Reports by Group: Experiment:

  • Past Experiment (HDIce) off floor largely; dilution refrigerator / pump cart craned out & high bay control room reconfigured for High-B. (With many thanks to install group for roofing tile gyrations!)
  • Elevated beam line decommissioned upstream of M901 quad and terminated in roughing valve.
  • COO/ESAD/RSAD prepared; committee response in progress.
  • Control room reconfigured
  • Pull Heliax from Spectrum analyzer/Control room >> Buncher for beam study

CIS/EGG:

  • Gun operating at 180kV w/o Field Emission following rebuild, HV conditioning, and Kr processing (Many thanks to all involved!!)
  • Many improvements and modifications made to prep chamber. New pucks prepared as well.
  • HV tests with a GaAs puck (#8) in the gun (8/3) [Carlos]
  • Gun HVPS locked out , reconnect gun valve, charge NF3, degas heater/puck, get UITF laser on (8/4)
  • Make photocathode (8/5) [Joe/Max]
  • Align laser to photocathode, using retro and QE (8/5) [Shukui]
  • Gun rebuild wiki
  • Racks and Mott crate staged for later experiments

Old insulator (punctured) & Old puck manipulator/schneedle for reference; both replaced. Very modest SF6 leak id-ed on top of HV tank; will repair when practical.


DC Power:

  • Trims:
    1. Trim magnets near gun re-cabled.
    2. Wastewater beam line trims cabled up.
    3. Trim magnets near FC#3: 401H/V (completed) & 501H/V correctors + 501 quad
  • Former PEPPo solenoid repaired, mapped, and installed.
  • Solenoid PS being installed. Supply placed, cables pulled, cabled, and LCW hooked up.
  • MHB magnet re-designation to MLH to avoid confusion: Chris Gould making nomenclature changes / Gary Croke & Michele Joyce making controls changes / Eric Forman to update Quick Reference Drawing / Shaun to take care of song sheets
  • Changes made in UED workspace for names and field maps; ready to merge soon. (Thanks Gary/Michele!)
  • Replacement of cards and utility chassis' acquired for CEBAF under way...


Instrumentation and Controls:


Viewer system status [IC; Norris / McCaughan]

  • Recable 2 viewers in keV whose channels & hardware were appropriated for HDice (done)
  • Reconnect IYGM401 (formerly ITV, now YAG)
  • Drag cable and connect IYGM603 and IYGM603 (appropriated from HDice line, swapped ITV > YAG).
  • Brian Freeman available for adViewer work for video camera for ITVM604A? Dome focusing still required...


Wire Scanners [Delacruz / Poelker]

  • IHAM703 Status (Scanner swapped out)


Chopper Controls (Windham/Lu)

  • STAC5 Controls replacement (done)
  • Encoder mapping (divide steps /10 over last controller)
  • Controls transparent to user


Chopper Controls (Windham/Lu)


BPMs (Windham / Hesse / McCaughan)

  • Install new BPMs on line (completed)
  • Map DR receivers to appropriate chassis (completed)
  • Correct all naming and controls issues
  • Re-label locally.


Faraday Cups / Picoammeters (Francis)

  • FC cups 3 & 4 installed in new locations and under vacuum
  • Cables / air lines /etc pulled to new locations and installed
  • Connections removed for shielding installation per RCG.
  • Picoammeters all good - some screen work required.


Vacuum

  • VBVM501 & VBVM602 slow valve connections. VBVM602 is new installation.
  • VFVM401 Fast Valve installation
  • VCGM604 Cathode Gauge installed
  • VGPM401, 603, 604, and 703 NEG pumps - installation completed, activated, status of remote powering?
  • Numerous VIPs installed, functional, on EPICS, and archived.
  • Thin Ti window installed by experiment, pumped down, leak checked , and signage / PPE posted.


BCM

  • BCM project software integration under way between Musson/Seaton and Sue Witherspoon


RF:

  1. 6GHz > 1.5GHz Down-converter installed for bunch length system
  2. Laser RF HCO


SSG:

  1. BLM installation underway:
    • Replace those previously removed
    • Additions
      1. In crotch of MeV/Wastewater selecting dipole.
      2. Near 1st new diagnostic cross d.s. of solenoid
      3. Near 2nd new diagnostic cross by FC4
      4. D.S. of target after lead shielding
  2. FSD inputs (original)
    • Target motion (now software interlock)
    • Solenoid (Now engineered control)
    • BCM current clamp system
    • Update gold masking

ME / Installation:

  1. Pb stacked; RCG required modification due to permanent shielding req delay.
  2. New designs for FC3 and FC4 with a great many thanks to Shaun for the design work and John/Xi for Pb arrangement and table construction!
  3. Songsheet being updated by Shaun; be sure to let him know when changes are made!
  4. Permanent shielding purchase in progress - FML (Russ) for most current details
  5. Unistrut mounting for cables when available
  6. Mount gas bottle rack in Labyrinth (Staged); remove gas bottles to rack.

Sys Admin:

  • 4th terminal system in Control room under assembled/rebuilt
  • Wall server configured
  • Need to configure wall monitors and install small networked printer.


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