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MOLLER Install Update 05/26/2026

22 hours 1 minute ago
Log Number: 4505266Logbook(s): Tags: Entry Makers: jonesgaskelldwineskashydougberdnikciprianBody: 

Hall A techs continued pouring of grout first part of work day. Second part of day team removed de-installed items from hall to CMSA laydown area. EIC continued with installation of 1 inch waterlines for MPS. Target group continued with installation of 4 inch and 6 inch piping along truck ramp for Helium feed to Hall.

lhurt

Beam position excursion just prior to xB valve closure

22 hours 17 minutes ago
Log Number: 4505259Logbook(s): Entry Makers: eformanBody: 

It appears that there was a position excursion on the Hall B lock BPMs just prior to the beam trip/valve closure. One can see the lock correctors responding to the position shift in fig. 1.

Fig. 1: Hall B valves & target pressure on top plot, BPMs on middle plot, lock correctors on bottom plot.

eforman

(iocnl26rffcc1) watchdog alarm - restored fine

22 hours 18 minutes ago
Log Number: 4505257Logbook(s): Entry Makers: dchriBody: 

given the guidance for response, looks like we may contact software.
Have not attempted to reboot IOC due to guidance

I did a quick scan through the list of PV's on this IOC, nothing critical stood out to me and the cryo heaters are unaffected

As I'm typing this (Fig. 5) IOC came back online. All is well

dchri

xB activity around their target (valves closed)

23 hours 1 minute ago
Log Number: 4505248Logbook(s): Entry Makers: dchriBody: 

Not sure what has happened. Pressure at the target spiked. Valves closed. Hopefully xB can deduce some conclusions on whats going on...

No beam to xB, dumplett is in due to bleed through. Halo's have sky rocketed with bleed-through alone.

Downstream & Midstream Halo's tracks with pressure swings

FIG. 5
Rad monitor #30 had increased until the dumplett went in

dchri

Vacuum Group Summary 2026-05-27

23 hours 35 minutes ago
Log Number: 4505230Logbook(s): Body: 

VIP1L06B
- Installed simulated load on VIP1L06B, closed VBV1L05B and VBV1L07A
- Kept VBV1L06A, VBV1L06B open
- Isolated 1L06 and adjacent girders, watched VIP1L06A, VIP1L07A, and VIP1L07B for pressure rises or problems
- No obvious problems with cryomodule, pressures declined or remained flat
- Decision was to keep running the machine, watch for trouble
- Still plan to install appendage pump on VIP1L06B next week

duzik

Operator SIGN IN

23 hours 57 minutes ago
Log Number: 4505216Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Christian
DATE:             05/27/2026
SHIFT:               Swing

The operator has read the following:
dchri

Operator SIGN IN

1 day ago
Log Number: 4505214Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Yoon
DATE:             05/27/2026
SHIFT:               Swing

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

Operator SIGN IN

1 day ago
Log Number: 4505213Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Thomas
DATE:             05/27/2026
SHIFT:               Swing

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

CREW CHIEF SIGN IN

1 day ago
Log Number: 4505212Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 05-27-26
Time : 16:02:50
Day : Wednesday
Shift : Swing

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

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

Shift Information

Shift Swing
CEBAF Program
MCC Crew Chief Richardson
MCC Operators Christian, Schaumloffel, Thomas, Yoon
Program Deputy Saitiniyazi
Announcements

Access Status

Recent PSS History

recent pss history graph