Aggregator

RF Health Check

1 day ago
Log Number: 4529289Logbook(s): Tags: Body: 

Beam Conditions:
Total Linac Current (R2XXITOT) = 294.12
Hall A Current (IBC1H04CRCUR2) = 0
Hall B Current (IPM2C24A.IENG) = 3.22991
Hall C Current (IBC3H00CRCUR4) = 73.53
Hall D Current (IBCAD00CRCUR6) = 166.5
BSY Current (IBC4C00CRCUR5) = 0
INJ Energy (MMSINJEGAIN) = 119.615
NL Energy (MMSLIN1EGAIN) = 1060
SL Energy (MMSLIN2EGAIN) = 1060

Gradient Problems:
0L02-7 Klystron Cathode Current (KCCU)=0.00390625 (<=0.7A)
0L03-1 Local Oscillator Power (LOPW)=44.6 (<=70mW)
1L05-5 Klystron Cathode Current (KCCU)=0.00695801 (<=0.7A)
1L06-1 Measured Gradient (GMES)=0.154 (>=0.1) with RF OFF - Check De

michaelm

iCalibrate: Hall C

1 day ago
Log Number: 4529280Logbook(s): Body: Calibration ParametersHall:CTarget: Loop 1 10cmPass: 4Note: SHMS angle: -12.97, 1uACalibrated On:2026-Jul-19 17:59Calibrated By: yoonFile:C-2026-07-19_1759_Loop_1_10cm_Pass-4.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Co
chumphry

120VAC Outlets in NL24 and 25 Racks

1 day 1 hour ago
Log Number: 4529279Logbook(s): Entry Makers: moserBody: 

Earlier today ACE group swapped a UPS that was throwing errors for a linac roll-around PC cart, plugged into an NL24 rack 120VAC front-facing outlet near the floor. The UPS being swapped reported going down yesterday between 1830 and 1930. ACE found the unit to be cycling on and off and not booting up. Upon swapping the UPS, the same behavior was observed. Swapped the new UPS to power from NL25 racks, same problem. Swapped to NL26 racks, no issues. Tried the UPS back in 87, no issues.

Facilities was contacted by Ops both via x7400 and ServiceNow incident INC0566852 to investigate.

moser

2L05 HV Drop, CPS Breaker Trip

1 day 1 hour ago
Log Number: 4529252Logbook(s): Entry Makers: alexsBody: 

Zone dropped with no enunciated faults, tripping the CPS breaker. This happened on Saturday, also with no indications of a real fault or current surge. Root cause investigation is ongoing, but zone came right back without issue after resetting the breaker.

alexs

Hall D Helicity test

1 day 1 hour ago
Log Number: 4529229Logbook(s): Entry Makers: janakBody: 

Hall C was informed of the Helicity test in Hall D
Step 1:Under Reporting Delay selected No Delay (was previously 8 window) and set the Hall A IA DACs to 65000
Step 2: Selected 8 windows delay - DACs unchanged.
Step 3: Alternated between 1000 and 65000 on the DACs

janak

Shift Information

Shift Day
CEBAF Program
MCC Crew Chief Richardson
MCC Operators Humphry, Janak, Thomas
Program Deputy KLarrieu
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