2L09-1 and 6 recovered (RFCM), 2L13-1,3,7 recovered and cav 5 2.5W amp replacement in works. 2L12 and 2L20-8 cavities recovered from KMAI and no clamp. Other GSET 0 cavities that I Ungset 0 and tuned in, I forget them all !! C. Kerns and T. Johnson. EPASS printer problems remain on new Chrome and Redhat 9 are worse than the first four years and need help again. Time spent on EPASS paperwork is over 4 hrs. each day to print and lockout 1 task ! Ridiculous when paperwork makes you more frustrated and makes you feel more unsafe through frustration !
KMAS was set and saved at 2kV to help recoverying or struggling tubes and sometimes in the soft startup program, KMAS is doesnt set back to 0 kV or if the Mod Anode program is started by an arcing tube or weak tube, the program will set it to 2Kv to give the struggling klystron output a boost. Set KMAS back to 0kV while monitoring the KMAI to make sure it doesn't shoot up past the warning point of 2.25ma or rise too fast and trips on KMAI fault at 3.75 ma.
The following cavity histories have been updated:
2L20-8
Username: kerns
Date/Time: 04-22-26_17:21:42
RF Status: Good
Tuner Status: Good
Comment: Recovered klystron with KMAS 1kV and ODVH=8.1 Mv/m. Will monitor klystron overnight but looks good now.
Special Instructions:
Maintenance Tag: Component: Tube
The following cavity histories have been updated:
2L12-7
Username: kerns
Date/Time: 04-22-26_16:50:58
RF Status: Good
Tuner Status: Good
Comment: Cavity recovered after discoverting Clamp at 0v in RF. Restored to 10.5 Mv/m and optimized.
Special Instructions:
Maintenance Tag: Component: Other
GSET 0 with no clue why . It said it was UnGSET 0 for the loss of 2L03 but I found no Clamp voltage when I put it in RF which means the clamp was saved by procedure or micro was saved and cavity wasn't in RF. This sometimes happens in software and and not by operator or RF Xperts because operator OLT experts screens don't even have this function. Full RF expert screens do and even show the klystron running values along with Helium, State Machine, Cavity, and Micro Temperatures that can be used to troubleshoot. No KCCU- NO Gradient : NO 10v -NO RF Gradient !!!
Matt Jehle and I spent the majority of the day trying to duplicate the fault signature of the trips of pass 2 and could not. IOT 1 is now bypassed to facilitate troubleshooting of the recent Separator Pass 2 trips. We are operating RF into the Pass 3 cavities. If the system now trips we are suspecting the crowbar in the HVPS as the source of trips.
| Shift | Owl |
|---|---|
| CEBAF Program | |
| MCC Crew Chief | Price |
| MCC Operators | Smith |
| Program Deputy | Sereno |
| Announcements |
