Start of shift: Hall C performing momentum delta scans requiring intermittent beam.&nbs
At the request of the hall. I established a good orbit and all FFB BPMs were less than .5 mm. However, I was not able to get FFB on in relative mode as the 3C02V corrector would saturate immediately in relative mode, so in the end unsuccessful. It might be worthwhile to complete this as a BSList. Attached is the help given the saturation fail. Keep in mind this with the slow lock off and the FF zeroed, so the corrector itself may be bad.
Seems that after the cavity was brought back on the phase hase varied +/- a degree or so. Talked to RF on call, and he said they'll discuss tomorrow about a possible fix. However, it doesn't seem to be disrupting orbit, so were going to raise the alarm limits for now. Fig one is noise now, fig 2 is noise before the trip, anf fig 3 has both.
Unfortunately had little no no effect on the 1A spot with all 4 available cavities brought back on resonance. I had locks off and energy seemed to drift slightly as indicated by the 1A stats, but nothing drastic as seen like the abrupt phase changes. The ARC1:dpp saw the draining as expected.
The following cavities have been GSET 0:
1L12-8
Username: samari
Date/Time: 03-29-26_13:23:38
RF Status: Good
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - end of test, low energy '26
Special Instructions: , HPA breaker tripped
Maintenance Tag: Component: Operator Entry - See SME
The following cavities have been UnGSET 0:
1L12-8
Username: samari
Date/Time: 03-29-26_13:10:04
RF Status: Good
Tuner Status: Good
Comment: UnGSET 0 - stepped on -100k - test for BSList 119881
Special Instructions: , HPA breaker tripped
Maintenance Tag: Component: Operator Entry - See SME
The following box supplies were CYCLED by version 2-16 of the Box Supply Cycling Script:
ARC1A Ramp Rate = 7.400 A/s
ARC2A Ramp Rate = 7.131 A/s
ARC3A Ramp Rate = 9.272 A/s
ARC4A Ramp Rate = 10.118 A/s
ARC5A Ramp Rate = 9.280 A/s
ARC6A Ramp Rate = 8.810 A/s
ARC7A Ramp Rate = 9.277 A/s
ARC8A Ramp Rate = 11.432 A/s
ARC9A Ramp Rate = 9.300 A/s
ARCAA Ramp Rate = 11.712 A/s
LAM3C Ramp Rate = 8.825 A/s
MYA2T01 Ramp Rate N/A
MYA4T01 Ramp Rate N/A
MYA6T01 Ramp Rate N/A
MYA8T01 Ramp Rate N/A
MYAAT01 Ramp Rate N/A
RSEP8A Ramp Rate = 10.544 A/s
RSEP9A Ramp Rate = 4.774 A/s
XSEP2T
| Shift | Swing |
|---|---|
| CEBAF Program | |
| MCC Crew Chief | Forman |
| MCC Operators | Schaumloffel, Yoon |
| Program Deputy | Malace |
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