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1L07 Cool Down Complete
COMMENT ON Install 8 kW circulators in 1L09
ATLis Comments Daily Digest
Cryo Daily Update
• 1L07 u-tube installation to support 4K cooldown
• CHL2 lower section of 4K cold box vacuum pump maintenance
• CHL2’s 2K Cold Box process piping – pump & backfills
• CHL2’s 2K Cold Box test fit of new o-ring
• The failed ODH cell in CHL2 Compressor Room was replaced. The new one was calibrated and successfully tested.
COMMENT ON Dominion Energy 40 and 33 MVA Substation PM
ACG Report
NL08 C75 Upgrade: (ACE TEAM) Installed and terminated network cables for the RF server, ups, Cryo diode, rf heater and src vacuum chassis's. Network ports configured. We will install the network cables to the rffcc, hpa, interlock and resonance chassis tomorrow.
Documentation for the new vacuum widget library.
COMMENT ON PSS General maintenance tasks for SAM 2026
Hall C daily summary
Today Hall C technicians worked on.
Semiannual safety warden inspection in Hall C
Wire rope inspection in Hall C
Weld inspections for PCS magnet skids.
Painting of PCS magnet skids.
NUCAT detector frame fabrication
Printing and test-fitting and modifying NUCAT parts
Assembling filament extrusion project.
Checked out laptop from help desk fro EPAS training
No cross division work planned for 11/03/26
COMMENT ON RF 1L08 Upgrade network infrastructure installation
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.










