Vacuum recovering - Overboard ion pump came on and is at 540 uA. We'll leave this on and try to turn on the chamber ion pump tomorrow for checkout of leak valve, Cs and RGA as well as tests of long manipulator.
Cleanroom still in place in case we have to rework any of the components.
Completed installation of updated CHL2 horizontal and vertical ASME relief valves.
SCN CC4 unlocked and levitated
SCN CC4 time response damping, air-gap, and UPS battery testing completed on magnetic bearing control cabinet
Continued removing unused racks and other hardware from CHL control room
I activated the NEG pumps in the 1I beamline. This was last done when they were installed in 2021, so it was time for a reactivation anyway, and they saw a tiny leak due to the gun bakeout and a leak in the gun valve bonnet seal.
Since the pumps are distributed along ~10' of beamline, and I had a pump cart installed only in the upstream location, I activated them in a staggered start/staggered end, starting with the end farthest from the gun.
For reactivation, the NEG should be taken to about 75% of the temperature for full activation.
Spot checked HCO/SRM -- magnets that I looked at listed here have been downgraded to Not Ready. Perfect.
Description references an attached checklist. Please attach.
Otherwise, once the PTW is on-issue this task is approved. Added to SAM Cal and Work Map for next three days.
This work will happen under the new SAM 2026 ATlis https://tasklists.jlab.org/atlis/tasks/121248
| Shift | Day |
|---|---|
| CEBAF Program | |
| MCC Crew Chief | Deir |
| MCC Operators | |
| Program Deputy | Delk |
| Announcements |
