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Vacuum Group Summary 2026-02-18

11 hours 19 minutes ago
Log Number: 4471894Logbook(s): Body: 

2L03
- NEG activation successful
- All metal valve open
- Pump cart and cleanroom removed

2L25
- New V-blocks manufactured
- Install tomorrow morning, anticipate no problems with the magnets

MYBBS06
- Beamlines reconnected
- Pumping down, leak check tomorrow morning

duzik

CREW CHIEF SIGN IN

11 hours 33 minutes ago
Log Number: 4471887Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 02-18-26
Time : 15:20:39
Day : Wednesday
Shift : Swing

Crew Chief : Forman
Program Deputy: Buttles
Team : F
Arm : RADCON
Designated SSO: Schaumloffel
LERF Operator:
Operators : Yoon, Schaumloffel

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

COMMENT ON C75-05 (2L03) SRF Cryomodule Commissioning

12 hours 9 minutes ago
Log Number: 4471878Logbook(s): Body: 

Installed DecaRad system on 2L03 for SRF Commissioning.
2L03 Readbacks via SRF DecaRad screen sl05a
__Drad Ch.__ /__Location__
DRADS05ASRF1 1L10 WG 1&2
DRADS05ASRF2 n/c
DRADS05ASRF3 1L10 WG 3&4
DRADS05ASRF4 n/c
DRADS05ASRF5 1L10 top cl
DRADS05ASRF6 1L10 WG 5&6
DRADS05ASRF7 1L10 WG 7&8
DRADS05ASRF8 n/c
DRADS05ASRF9 1L10 Supply (US) BL
DRADS05ASRF10 1L10 Return (DS) BL
DRADS05AHVMON
All 7 chs. read normal background counts ~13:45 on 18Feb2026. HV bias is off.

king

COMMENT ON SL25 and SL26 vacuum controls and cable installation for reworked 2L25/2L26 girders

12 hours 24 minutes ago
Log Number: 4471875Logbook(s): Body: 

Finished installation at 2L25.
Waiting for warm region girder to be installed and vacuum to be establish to connect cables downstairs.
C100 chassis needs to be flashed with new firmware and screens updated for new gauging.

Began work at 2L26.
Installed B-Rax controllers in rack and began routing cables in rack.
HV and convectron cable has been terminated downstairs for 2L26.
Will continue work at 2L26 tomorrow morning.

mathewam

COMMENT ON Post SAM FE onset measurements C75 and C100 cryomodules

12 hours 26 minutes ago
Log Number: 4471874Logbook(s): Body: 

Moved DecaRad system to 1L25 to support post-plasma checks (removed from 1L23.)
1L25 Readbacks are via the 1L25 C100 RF Expert screen/RF DecaRAD, (Rf12ExpertMenu.edl)
__Drad Ch.__ /__Location__
R1PXDRAD01 1L25 WG 1
R1PXDRAD02 1L25 WG 2
R1PXDRAD03 1L25 WG 3
R1PXDRAD04 1L25 WG 4/5
R1PXDRAD05 1L25 top cl
R1PXDRAD06 1L25 WG 6
R1PXDRAD07 1L25 WG 7
R1PXDRAD08 inop (1L25 WG 8)
R1PXDRAD09 1L25 Supply (US) BL
R1PXDRAD10 inop (1L25 Return (DS) BL)
R1PXDHVMON

8 out of 10 chs. show normal background counts.
HV bias is now off.
1L25 ch.

king

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MCC Crew Chief Price
MCC Operators Christian
Program Deputy Buttles
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