Aggregator
Box Supplies Were Cycled
The following box supplies were CYCLED by version 2-16 of the Box Supply Cycling Script:
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
XSEP2T Ramp Rate = 5.386 A/s
XSEP4T Ramp Rate = 5.149 A/s
XSEP6T Ramp Rate = 9.209 A/s
XSEP8T Ramp Rate = 14.597 A/s
XSEPAT Ramp Rate = 16.476 A/s
Hall B JAM Update
SWList 119862 for CATS Corrective Action
STR-2025-06-01-13 Action Description:
JAM update to add RADCON / Doors, Gates, Fences, and other Barriers to Hall B.
Before any changes, Figure 1, all Credited Controls needed before Beam Authorization to Hall B can be granted.
Figure 2: Description of Credited Control to be added to Hall B.
Figure 3: After addition of Credited Control to Hall B.
Fopt 26mar261120 results: 5th pass B beam to 2C dumplette
Comment: 5th pass B beam to 2C dumplette
HOSTNAME: opsl03
CED WORKSPACE: OPS CED LOGIN KEY: pro
MYA DEPLOYMENT: ops
CONFIG PATH: /cs/prohome/apps/q/QTSnyder_QT5/1-2/fileio/config/cs.conf
DIFORB PATH: /usr/ntfs/public/optics/diforb
Fopt - 5th pass beam to 2C dumplette
5th pass transport orbit to 2C dumplette
Tried cleaning up some of the transport steering to the 2C dumplette. MXXAT01 and MZAAT03 were found off design and 2C00V corrector with alot of BDL pushing down in order to get through the B hole.
I tried a little bit of shunt steering to see if we can zero 2C01 with just shunts but doesn't seem like we are able to. We end up losing beam at the entrance of the lambertson.
Able to get AAT03 closer to design but AT01 a little further. Took alot of corrector use out of 2C00V though.
Figs 1-6 Before
Figs 7- After
HCO of Hall B and C - no Hall C restart
COMMENT ON BCM System - maintenance and repairs
Hall B BCM and BPM cavities tuned - https://logbooks.jlab.org/entry/4480247
Hall B BCM and BPM cavity tune
COMMENT ON Vacuum Activities CEBAF 3/10/2026 through 3/14/2027
Hall B: VBV2C21 24 Vdc connector is connected to Solenoid; VBV2C21 is Open. Tried Starting VIP2H04 several times was unsuccessful, informed Hall B Tech Morgan Cook IV; to keep trying every 10 minutes to turn On, if unable to start today turn Digitel Controller Off and continue to Pump with Turbo Pump Cart, then try again tomorrow.
Adjustment to 2nd Pass Separator phase - xBD now colinear at 2nd pass
QuickPic - GP-PL-GP
dogCalc V0-14 download
Laser phase flip on xBD laser - Found xB beam not being extracted 5th pass
When first sending B beam past 9R dumplette, found that B beam is recirculating and D beam extracting. Must be additional fallout from the laser phase flip that occurred on Owl shift (linked logs).
Adjusted Hall B and Hall D laser phase +180 degrees to restore 5th pass horizontal extraction.
1L21-5 Arc Test Latch Fault
HarpFitter: IHAAE01 - After 51 Wien - B laser
Follow-up Re: C Laser IF phase changed by 180?
there is a divider in the chassis that provides 499,249.5,70 and 35 MHz frequencies to the laser rf system. If the divider changes state due to any glitch in the power, that would cause the phase flip. It would cause all the operating lasers to flip the phase and it won't be visible. I believe only C laser was running at this time, that's why it was only noticed on C. FSD functionality was implemented on the phase flip for this very reason. Operator intervention is required to find the phase set points again, whenever this happens. Should I add this as guidance for phase flip?










