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The following cavities have been unbypassed: 2L13-1

1 day 6 hours ago
Log Number: 4472999Logbook(s): Tags: Body: 

The following cavities have been unbypassed:
2L13-1
Username: evonda
Date/Time: 02-25-26_14:09:29
RF Status: Good
Tuner Status: Good
Comment: Unbypassed - stepped on -100k - Needed to unbypass the cavity to see if filament issues still exist; Zone was able to go back into HV and RF without issue.
Special Instructions:

Maintenance Tag: Component: Other

evonda

COMMENT ON Removal and Installation of Girders 2L25A & 2L26A

1 day 7 hours ago
Log Number: 4472985Logbook(s): Body: 

25A girder assembly. Pinpointed a small 8 range leak in the new topside isolation valve bonnet seal. We replaced the valve assembly with a standard all metal 2 3/4" right angle valve. Leak test was good after replacing valve. We'll do a final girder assembly leak check tomorrow morning before activating the Neg pump.

26A girder assembly. Neg pump activation completed. All metal gate valve is open. VIP2L26A currently on a local pig power supply until tomorrow. Vacuum pump and clean room removed from area.

fhumphry

COMMENT ON BPM Maintenance

1 day 7 hours ago
Log Number: 4472984Logbook(s): Body: 

02/25/2026 BPM Work:
SEE - IPM2L26 - BPM cables replaced and system tested - Ready for Beam

SL25 girder still has a clean room in place. Will need to wait until that is removed and access is available.

sethg

DecaRads Auto-off feature

1 day 7 hours ago
Log Number: 4472983Logbook(s): Body: 

All of the C100 zone DecaRad screens have a 3 hour Auto-off feature for the G-M tube bias voltage.
For the DecaRads on the Digi PortServers in zones 02-21, the timer duration is selectable (1-25) with a default of 3 hours.
Prior to starting an FE run, it would be best to cycle the HV button, if already on from previous testing.

This change was implemented to prevent burning out all ten DecaRad head$ shortly after commissioning and plasma testing, when nearby gradients are turned up and the G-M tubes are flooded with FE.

king

COMMENT ON VDP1L27 Activation

1 day 7 hours ago
Log Number: 4472982Logbook(s): Body: 

Good morning VDP1L27 NEG Activation> VIP1L27 B, C, D Off @ 10:00 am; Full Activation of NEG's Start @ 10:00 am, Stop @ 11:30 am. VIP1L27 B, C, D Start On @ 12:15pm, Turbo Pump Cart will stay attached to VDPVRV1L27 until next opportunistic time to remove + VBV1L27A and VBV1L27B 24 Vdc Connector's will also be reset on VBV's at that time.

marble

CREW CHIEF SIGN IN

1 day 8 hours ago
Log Number: 4472975Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 02-25-26
Time : 12:08:24
Day : Wednesday
Shift : Day

Crew Chief : Mock
Program Deputy: Schoene
Team : B
Arm : RADCON
Designated SSO: Thomas
LERF Operator:
Operators : Thomas

This stamp certifies that the above Crew Chief has read/reviewed/received the following:
mock

COMMENT ON Implement a Gamma IP controller for CEBAF gun anode biasing and current monitoring, following the method used in UITF

1 day 8 hours ago
Log Number: 4472971Logbook(s): Body: 

Please submit a service now request for the hostname and ip address for the Gamma controller.
https://jlab.servicenowservices.com
For Category select "Accelerator Computing Environment (ACE) and subcategory IP Address request.

The one you recently installed in the UITF is named spceitfgamma1, can we name this one spcein01gamma1?

You will also need to use the following form to submit the request for the software/EPICS controls.
https://ace.jlab.org/apps/software-request/

Once this is done we can get it connected to the network.

cumbia

JLab RTP Controls - two improvements

1 day 8 hours ago
Log Number: 4472973Logbook(s): Entry Makers: suleimanBody: 

1. If we could the heart beat to blink - easier to recognize that the communication is alive.

2. The setting in Figure 2 should be in ioc save/restore. Now, all these come back zeros after ioc reboot.

suleiman

Shift Information

Shift Swing
CEBAF Program
MCC Crew Chief Richardson
MCC Operators Chaudhary
Program Deputy Schoene
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