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Hall D 5C11B PID lock parameters changed to reduce orbit oscillation

19 hours 59 minutes ago
Log Number: 4494193Logbook(s): Entry Makers: alexsBody: 

Hall D's positions have been very swingy since bringing them up, and it appears the PID orbit locks are partially to blame. When the PID locks are engaged, almost every change to the associated magnet has been the maximum allowed value, 150 BdL, suggesting the PID parameters are not set to helpful values. I am also no expert on these loops, but for the time being, changing the max change from 150 to 30 has reduced the amplitude of the X position oscillations.

alexs

Bypassed OM216 for HI alarm

20 hours 16 minutes ago
Log Number: 4494190Logbook(s): Entry Makers: alexsBody: 

Received an ODH alarm that appeared to be coming from the LERF, but could not tell remotely due to no local readbacks. Contacted Software and SSG, and both are aware of the issue and confirmed that even though we don't have readbacks on EPICS, an alarm will propagate to the PSS panel if one of the heads goes into alarm (as it just did). Locally inspected the ODH racks in the LERF and determined the culprit to be OM216 reading high. The adjacent OM215 head is still functioning (figure 2, old picture), so bypassed OM216.

alexs

iCalibrate: Hall D

20 hours 35 minutes ago
Log Number: 4494179Logbook(s): Body: Calibration ParametersHall:DTarget: JD70-107 55um 45/135 degPass: 5.5Note: Calibrated On:2026-May-03 18:47Calibrated By: alexsFile:D-2026-05-03_1847_JD70-107_55um_45_135_deg_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)
alexs

iCalibrate: Hall D

20 hours 46 minutes ago
Log Number: 4494175Logbook(s): Body: Calibration ParametersHall:DTarget:JD70-107 55um 45/135 degPass:5.5Note:Calibrated On:2026-May-03 18:47Calibrated By:alexsFile:D-2026-05-03_1847_JD70-107_55um_45_135_deg_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)
alexs

Hall D removing collimator

21 hours 31 minutes ago
Log Number: 4494161Logbook(s): Entry Makers: lrichardBody: 

Requested IC calibration on JD70-107 55um 45/135 deg. Runners responding to ODH at LERF. Letting the hall remove the collimator for now until runners return.

lrichard

Operator SIGN IN

23 hours 27 minutes ago
Log Number: 4494135Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Shenenberger
DATE:             05/03/2026
SHIFT:               Swing

The operator has read the following:
alexs

Operator SIGN IN

23 hours 31 minutes ago
Log Number: 4494131Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Anthony
DATE:             05/03/2026
SHIFT:               Swing

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

Autolog save

23 hours 51 minutes ago
Log Number: 4494121Logbook(s): Tags: Body: saver ran from opsl05

Saved: lrichard 05-03-26 15:43:49 {A:i B:5 C:2 E:345 A=BS B=BS C=CW D=CW 0R08=7.05 No dumps in.
lrichard

CREW CHIEF SIGN IN

23 hours 55 minutes ago
Log Number: 4494119Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 05-03-26
Time : 15:38:11
Day : Sunday
Shift : Swing

Crew Chief : Richardson
Program Deputy: Sereno
Team : X
Arm : Shenenberger
Designated SSO: Anthony
LERF Operator:
Operators : Anthony, Shenenberger

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

Shift Information

Shift Swing
CEBAF Program
MCC Crew Chief Schoene
MCC Operators Barker, Christian
Program Deputy Sereno
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