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COMMENT ON Dominion Energy 40 and 33 MVA Substation PM
Previous guidance was not turn off anything that can be but rather avoid any high power device operations. High power devices such as cold compressors, Box Power Supplies, and RF High Power Amplifiers. Colleagues should not power off their desk electronics etc. for this work, correct? If so, please amend the description of task to be more precise. Thanks.
COMMENT ON Disconnect, Remove 20 Amp Trim Power Supplies For Bench Repair
The 2 North Access power supplies previously removed were reinstalled in their racks.
Removed, repaired, reinstalled 4 additional power supplies:
NL01B09 ch 4 (MQK4R07)
NL01B11 ch. 4 (MCB1L01A)
NL27B14 ch. 5 (MQN1S04)
E101B07 ch. 3 (MQL1S07)
Humphry, Chaudhary
COMPLETED Install external fans on Shunt chassis
COMMENT ON Install external fans on Shunt chassis
COMMENT ON Shunt System PM for SAM 2026
COMMENT ON SAM 2026 Box Supply Work Preventative Maintenance/interlock checks
APPROVED SAM26 PSS replace the ILD air cylinder actuator
Survey and Alignment work summary
COMMENT ON Magnet Disconnect for Electrical Testing of Arc Dipoles
All dipoles listed below have been disconnected, and magnet leads have been moved out of the way. The attached checklist has been printed and filled out. The magnet group can now perform their magnet testing.
MJC5A03
MJC5A04
MJC5A21
MJC5A22
MJC5A23
MJC5A28
MJC5A30
MJC5A31
MJA9A03
MJA9A04
MJA9A21
MJA9A22
MJA9A23
MJA9A28
MJA9A30
MJA9A31
-O'Brien, Crespo
COMMENT ON Install C-100 style Vacuum Controls and Cable Install NL08 (2026 SAM)
Re-configured new interlock chain for NL07, NL08 and NL09.
Was able pull back and reuse interlock cable from 6 GeV SRF Vacuum crate to NL09 for NL08.
New configuration for interlock is:
- NL06 (6 GeV) to NL07 (existing cable just re-pinned)
- NL07 to NL08 (cut cable from 6 GeV to NL09 in half)
- NL08 to NL09 (same cable that was cut in half)
Will verify correct interlock chain during HCO/Commissioning.
C100 chassis at NL08 has been powered on in preparations to Network cables being installed this week.
ced2Epics modified EPICS PVs
COMMENT ON SAM26 PSS replace the ILD air cylinder actuator
SSG will perform this task on Tuesday 11/2/2026.
A planned repair of this Credited Control device was screen through Safety Concern Form SC-2026-1102.
Even though we don't anticipate a need to remove credited shielding surrounding this component, we've contacted RadCon informing them about SSG work near the shielding.
COMPLETED Extending Laser beam Passthrough of CEBAF Laser Room
COMMENT ON Dominion Energy 40 and 33 MVA Substation PM
COMMENT ON SL 1427 MHz Driveline Amplifier Work
The permit is on issue.
Important items are staged.
Tomorrow's work will focus solely on removing the current amplifier installed in the rack (this is the one SRF lent to us). No one will be running RF in the SL for the next few weeks, and the work on Friday Nov 6 will take the MO down (sitewide) anyway.
Once (and while) the amplifier is out (over the next few weeks), RF will coordinate measurements we cannot perform with the system in its normal state.
COMMENT ON Vacuum Activities CEBAF 9/09/2026 through 12/31/26 (SAM26)
1L23 - Replaced Agilent scroll pump at 1L23 gate valve open turbo at full speed. Old pump staged for RADCON survey.
1L25 - Replaced Agilent scroll pump at 1L25 gate valve open turbo at full speed. Old pump staged for RADCON survey. 1L25 twistorr turbo pump also replaced on the 1L25 cryomodule. Work on 1L25 was done on 10-30-2026










