Aggregator

COMMENT ON Investigate Noisy 20A Trims (2026)

11 hours 14 minutes ago
Log Number: 4528555Logbook(s): Body: 

Checked terminals on the DC output cable for tightness for MQK5R09. Each terminal was able to be tightened by about a quarter turn. The supply was turned over to ops following the inspection.

DC Power will continue to monitor to see if the noise returns.

delk

HYST AREA 7-0 Cycles Magnets

11 hours 17 minutes ago
Log Number: 4528553Logbook(s): Body: 
HYST AREA Version 7-0 has FAILED to cycle:

MQA5A06 -- E301B11 -- ea3mag -- Failed to set after 2 cycle attempts


HYST AREA Version 7-0 has successfully cycled the following:

Area.Linacs.North
Area.Linacs.South
Area.Arcs.Arc1.Spreader
Area.Arcs.Arc1.Arc
Area.Arcs.Arc1.Recombiner
Area.Arcs.Arc1.Extraction
Area.Arcs.Arc2.Spreader
Area.Arcs.Arc2.Arc
Area.Arcs.Arc2.Recombiner
Area.Arcs.Arc2.Extraction
Area.Arcs.Arc3.Spreader
Area.Arcs.Arc3.Arc
Area.Arcs.Arc3.Recombiner
janak

HYST AREA 7-0 Cycles Magnets

11 hours 30 minutes ago
Log Number: 4528539Logbook(s): Body: 
HYST AREA Version 7-0 has FAILED to cycle:

MBC1C01H -- BS04B09 -- sb4mag -- Failed to set after 2 cycle attempts
MBC1C02V -- BS04B09 -- sb4mag -- Failed to set after 2 cycle attempts
MBC1C03H -- BS04B09 -- sb4mag -- Failed to set after 2 cycle attempts
MBC1C04H -- BS04B09 -- sb4mag -- Failed to set after 2 cycle attempts
MBC1C05V -- BS04B09 -- sb4mag -- Failed to set after 2 cycle attempts
MBC1C06H -- BS04B09 -- sb4mag -- Failed to set after 2 cycle attempts
MBC1C07H -- BS04B09 -- sb4mag -- Failed to set after 2 cycle attempts
janak

RF On/Off turned RF On

11 hours 41 minutes ago
Log Number: 4528534Logbook(s): Tags: Body: RF was turned on in:
R12
R13
R14
R15
R17
R18
R19
R1G
R1O
R1N
R1F
R1M
R1L
R1D
R1K
R1J
R1B
R1A
R1I
R1Q
R22
R24
R25
R26
R27
R29
R2H
R2F
R2C
R2B
R2A
R2Q
R2J
R2K
R2M
R2O
R2N
R2P
janak

Box Supplies Turned on and Cycled Once

11 hours 54 minutes ago
Log Number: 4528533Logbook(s): Tags: Body: 

The following box supplies were TURNED ON AND CYCLED ONCE by version 2-16 of the Box Supply Cycling Script:
ARC1A Ramp Rate = 8.127 A/s
ARC2A Ramp Rate = 6.939 A/s
ARC3A Ramp Rate = 9.725 A/s
ARC4A Ramp Rate = 10.989 A/s
ARC5A Ramp Rate = 9.961 A/s
ARC6A Ramp Rate = 9.222 A/s
ARC7A Ramp Rate = 9.973 A/s
ARC8A Ramp Rate = 11.962 A/s
ARC9A Ramp Rate = 9.370 A/s
ARCAA Ramp Rate = 12.584 A/s
LAM1C Ramp Rate = 8.295 A/s
LAM3C Ramp Rate = 11.408 A/s
RSEP8A Ramp Rate = 10.612 A/s
RSEP9A Ramp Rate = 5.058 A/s
XSEP2T Ramp Rate = 5.803 A/s
XSEP4T Ramp Rate = 5.311 A/s
XSEP6T Ramp Rate =

alarms

Autolog restore

11 hours 54 minutes ago
Log Number: 4528531Logbook(s): Tags: Body: saver ran from opsl03
Data from: /usr/opdata/burt/allsnap/07-21-26_06:23:34
Restored file: /tmp/07-21-26_14:40:14.snap


Restore after mauntenance day
chumphry

Autolog save

11 hours 55 minutes ago
Log Number: 4528530Logbook(s): Tags: Body: saver ran from opsl03

Saved: chumphry 07-21-26 14:39:56 {A:i B:1 C:4 E:1060 A=BS B=BS C=BS D=BS 0R08=0.00 A B C dump(s) in. Autosave prior to restore.
chumphry

Follow-up Re: Field Emission variations in 1L07

12 hours 24 minutes ago
Log Number: 4528513Logbook(s): Body: 

New NDX I400 unit at 1L07-1L08 behaves well, also improving the spread of the measured currents. The unit still needs to be Autobiased using the downtime today to make fine adjustments for the currents' biases. Other NDX units in NL show corrected biases close to zero (with the 1S01 unit with a small shift that may be corrected). In the SL, there's a similar case of 2L16, that has the largest current measurement spread, and may benefit from I400 replacement. Not a critical issue (don't have to "fix a working thing"). 2L06 would benefit from the autobiasing.

pavel

MBF0L06 cycling limits fixed.

12 hours 36 minutes ago
Log Number: 4528501Logbook(s): Entry Makers: kazimiBody: 

Figures attached show the magnet cycle has changed from 20 days ago (2026-07-01 compared to now 2026-07-21). The magnet was correctly cycling between 60A and 2A then and now it is cycling between 60A and -60A.
Figures 1 and 4 are now and Figures 2 and 3 show correct cycling sequence from 20 days ago

We changed the magnet limits from (-60A and +60A) to (2A and +60A).
Figure 5 shows that after changing the max and min limits the magnet cycle is working properly.

kazimi

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CEBAF Program
MCC Crew Chief Howard
MCC Operators Price, Chaudhary, Christian
Program Deputy KLarrieu
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