From Ciswikidb
Revision as of 08:54, 11 August 2021 by Michaelm (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Meeting Information


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: (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



Long Term Schedule: Gantt (Outstanding tasks)

  1. 8/9/21 Start Hot Check-out
  2. 8/16/21 Start commissioning (2 weeks)
  3. 8/23 BNNT cooldown in CMTF
  4. 8/30/21 Perform experiment (2 weeks)
  5. 10/18 C50R in CMTF
  6. Booster qualification following experiment until cryo trade to CMTF

New items for discussion:


Reports by Group:



  • Gun operating at 180kV w/o Field Emission following rebuild, HV conditioning, and Kr processing (Many thanks to all involved!!)
  • Y-dipole interlock unbypassed in Glassman HVPS. Resistor tank removed; gun cabled directly to HVPS.
  • Gun HVPS locked out , reconnect gun valve, charge NF3, degas heater/puck, get UITF laser on (8/4)

Gun bake pump hi-potted.

  • Make photocathode (8/5) [Joe/Max]
  • Align laser to photocathode, using retro and QE (8/5) [Shukui]
  • Gun rebuild wiki

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. Many polarity checks completed. 501 correctors re-designated
  • 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/Vennekate/McCaughan]

  • Recable 2 viewers in keV whose channels & hardware were appropriated for HDice (done)
  • Reconnect IYGM401 insertion depth adjusted
  • ITVM703 limit switch requires attachment; 800-line viewers non-communicating.
  • Brian Freeman available for adViewer work for video camera for ITVM604A? Dome focusing still required...

Wire Scanners [Delacruz/Poelker]

  • Harps all pass signal injection and stroke.

Chopper Controls (Windham/Lu)

BPMs (Windham / Hesse / McCaughan)

  • Re-label IOCs/BPMs locally.

Faraday Cups / Picoammeters (Francis)

  • FC2 unlocked for HCO
  • Connections removed for shielding installation per RCG.
  • Picoammeters all good - some screen work required.

Vacuum (Ketchum/Kortze)


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



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

FSD inputs (original)

  • Target motion (now software interlock)
  • Solenoid (Now engineered control)
  • BCM current clamp system
  • Update gold masking

ME / Installation:

  • Pb stacked; RCG required modification due to permanent shielding req delay.
  • 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!
  • Songsheet being updated by Shaun; be sure to let him know when changes are made!
  • Permanent shielding purchase in progress - FML (Russ) for most current details
  • Unistrut mounting for cables when available
  • 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.

Back to Main Meeting Minutes Page