Recent Log Entries
HYST AREA 6-3-2 Cycles Magnets
MBC5S08V trim card swapped
north linac gangphase drifting back and forth?
LERF L2HE J23 Pressurizing to 4K
LERF Vault is now ODH2
LERF Vault is now ODH2.
L2HE J23 will be brought up to 4K this afternoon, in preparation of this we are posting the LERF Vault ODH2.
Cabling of return valves on the L2HE Module pose a risk of venting reliefs, and generating an ODH hazard in the vault, any personnel accessing the vault must have appropriate ODH Training and equipment.
MYA2T01 check-up
Hall C -> 30 uA on LH2 (loop 2)
Hall C requests 30 uA on LH2 (loop 2). 2x2 raster is on. NPS and correctors are off.
Beam authorization: up to 40 uA CW
Ops restrictions for this target: up to 40 uA with minimum 2x2 raster always on
Ion chambers are set for this target with 30% margin. MaxJuice is 35 uA.
BCM calibration for Hall C
iCalibrate: Hall C
COMMENT ON Impluse response testing of 2L26
Change in plans. After talking to Rama about the scope of the task there is a concern that this could run late-ish into the evening. The new plan is to move the remote controlled hammer to the tunnel in a non-radiation area near the elevator tomorrow or in the alcove down near 2L18.
linac NDXs
I rearranged gradient in NL11 yesterday to bring that trace (slate grey, upper left) down. Something turned on in 1L22 (green trace) around 1900. C100 sums, lower right of figure 2, are less than half those of the last run.
"Hall C BCM calibration commencing"
The OPS DRVHs for the following cavities have been updated: 1L21-5
The OPS DRVHs for the following cavities have been updated:
1L21-5
Username: benesch
Date/Time: 09-25-23_12:04:24
RF Status: Good
Tuner Status: Good
Comment: DRVH=5.850 Arc Rate Management cut a bit less than I earlier thought
Previous OPS DRVH: 5.8
Special Instructions:
The OPS DRVHs for the following cavities have been updated: 1L14-5
The OPS DRVHs for the following cavities have been updated:
1L14-5
Username: benesch
Date/Time: 09-25-23_12:02:25
RF Status: Good
Tuner Status: Good
Comment: DRVH=7.200 Arc Rate Management four at 7.24, just a little cut
Previous OPS DRVH: 0
Special Instructions:
The OPS DRVHs for the following cavities have been updated: 2L02-6
The OPS DRVHs for the following cavities have been updated:
2L02-6
Username: benesch
Date/Time: 09-25-23_12:01:29
RF Status: Good
Tuner Status: Good
Comment: DRVH=8.300 Arc Rate Management six at 8.47, evenly spaced
Previous OPS DRVH: 0
Special Instructions:
iCalibrate: Hall C
COMMENT ON Replace Inner IR sensors on 1L07-7, 2L22-4, 2L24-2
COMMENT ON C100 scope mode extended multi-zone data gathering (phase 8)
BEM BPM Status/Connectivity intermittent
This has been happening for the East Arc BPMs. Master Switch cycle reconnects them but they should not lose connection as often as they have been lately. Contacted EESIC and they will look into it. Wanted to put something in the log about it. Spoke with Software Group and they said BEM gets the BPM signal from the High Level Status bit (HLST). That might be the first thing to investigate...