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Autolog save

2 days 1 hour ago
Log Number: 4468932Logbook(s): Tags: Body: saver ran from opsl03

Saved: msmith 02-07-26 00:37:13 {A:5 B:3 C:1 E:340 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in. Autosave prior to restore.
msmith

Bypassed 1L07-4 (again?)

2 days 1 hour ago
Log Number: 4468933Logbook(s): Entry Makers: kpriceBody: 

This cavity is "not ready" by RF in SRM. It was bypassed as recently as last night but the most recent entry in cavity history was 29 Jan. I just went ahead and re-bypassed it so the RF on button doesn't keep trying to wake it up.

kprice

Operator SIGN IN

2 days 2 hours ago
Log Number: 4468930Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             02/06/2026
SHIFT:               Owl

The operator has read the following:
  • ELOG
  • PD Shift Plan
  • Radiation Surveys for PSS Segments in Controlled Access
  • PSS Log
msmith

Minimizing ILM0L02

2 days 2 hours ago
Log Number: 4468927Logbook(s): Entry Makers: bschaumlBody: 

ILM0L02 was tripping with ~8 uA of CW only when sending the B laser. Seems to improve considerably when the 0L02.XPOS is made more negative. With the pictured orbit, the BLM is quiet with ~40 uA CW from all four lasers.

bschauml

CREW CHIEF SIGN IN

2 days 3 hours ago
Log Number: 4468926Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 02-06-26
Time : 23:04:42
Day : Friday
Shift : Owl

Crew Chief : Price
Program Deputy: Mock
Team : D
Designated SSO: Smith
LERF Operator:
Operators : Smith

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

Improving Collinearity

2 days 3 hours ago
Log Number: 4468925Logbook(s): Entry Makers: bschaumlBody: 

I'm not going to bother too much with the C laser at the moment as the orbit is a bit wacky off the cathode; if it gets better, so be it.

Some better centering through the choppers and solenoids improved the horizontal collinearity of A and B, with the remaining mismatch able to be fixed by tweaking chopper X phases. I am unsure whether one should prioritize collinearity through the 0I and early 0L, or through the late 0L and 0R. I decided to let the prior suffer to the point of being just outside our 0.5 mm spec in exchange for what seems like very good orbits through the latter.

bschauml

Checking 0L03 & 0L04 Phase

2 days 5 hours ago
Log Number: 4468920Logbook(s): Entry Makers: bschaumlBody: 

With the booster properly phased again, 0L03 and 0L04 need to be checked. Both zones were around 23ish degrees off. Yesterday I had to add 0.2 MV/m total to the lock cavities relative to LEMi setpoints, perhaps to compensate for the booster phase being off, but today I had to reduce them by 0.2 MV/m relative to LEMi setpoints.

bschauml

Checking Booster Phasing

2 days 6 hours ago
Log Number: 4468919Logbook(s): Entry Makers: bschaumlBody: 

Found both cavity phases were not nominal. Crested both on the viewer (Fig. 1 & 2) and added the 26 (per Yan) degree offset to the seven cell (2L02-8). Set MDL0L02 for 6.74 MeV/c, cycled, and found that I needed to reduce the GSET of the seven cell to the value (10.09 MV/m) it was at for the prior run.

bschauml

Shift Information

Shift Owl
CEBAF Program
MCC Crew Chief Price
MCC Operators Smith
Program Deputy Mock
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