Aggregator
The following cavity histories have been updated: 1L09-2
The following cavity histories have been updated:
1L09-2
Username: holben
Date/Time: 06-24-26_12:18:09
RF Status: Good
Tuner Status: Good
Comment: Klystron changed
Special Instructions:
Maintenance Tag: Component: Tube {Removed SN: Varian 176, Replacement SN: Stellant 227}
Bleedthrough Measurements for Hall B
Bleedthrough Measurements for Hall B
Machine status
Bleedthrough Measurements for Hall C
COMMENT ON Prototype BPM front end testing NL27
COMMENT ON Vacuum Activities CEBAF 3/10/2026 through 3/14/2027
BSY went into Lockdown and is being reswept
COMMENT ON Replace ARC5 Shunt MXD5R01
Bleedthrough measurement script
Selected all lasers, set A for 10 uA, B for .32 uA slit 30, C for 70 uA, and D for 40 nA.
The script put all 4 into one log and didn't correctly log the results, but otherwise was performed correctly except for reporting all measured FC1 readbacks as 0 nA.
Looking at archiver data, the measurement indicate
.5 nA (.0029-.0024 uA baseline) of bleedthrough through the C slit from Hall B Laser
.2 nA from C laser into B slit at 30
.1 nA from A laser into B slit at 30
1.2 nA from A laser into A slit
.4 nA from B laser into A slit
11.6 nA from C laser into A slit










