Aggregator

Log Number: 4480265Logbook(s): 

• ELOG

Entry Makers: moserBody: 

SWList 119862 for CATS Corrective Action

STR-2025-06-01-13 Action Description:
JAM update to add RADCON / Doors, Gates, Fences, and other Barriers to Hall B.

Before any changes, Figure 1, all Credited Controls needed before Beam Authorization to Hall B can be granted.

Figure 2: Description of Credited Control to be added to Hall B.

Figure 3: After addition of Credited Control to Hall B.

Log Number: 4480264Logbook(s): 

• ELOG
• BTLOG

Body: Fopt results from /usr/ntfs/public/optics/diforb/26mar261120
Comment: 5th pass B beam to 2C dumplette
HOSTNAME: opsl03
CED WORKSPACE: OPS CED LOGIN KEY: pro
MYA DEPLOYMENT: ops
CONFIG PATH: /cs/prohome/apps/q/QTSnyder_QT5/1-2/fileio/config/cs.conf
DIFORB PATH: /usr/ntfs/public/optics/diforb

Log Number: 4480263Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Fopt 7.9 completed successfully. The runtime settings include a sample count of 15, a minimum current of 4, and an operating regime of Standard with Excitation in 1S Region. The corrector and RF kicks applied were 0.488208 and 0.488208 volts respectively. The max. amplitude setting was 1 millimeters. The files for this run were saved in the directory /cs/opshome/hlapps/optics/diforb/26mar261120. The X and Y stability of the machine during the run was 0.0983021 and 0.068233 (mm) respectively.

Log Number: 4480262Logbook(s): 

• ELOG

Entry Makers: mockBody: 

Tried cleaning up some of the transport steering to the 2C dumplette. MXXAT01 and MZAAT03 were found off design and 2C00V corrector with alot of BDL pushing down in order to get through the B hole.

I tried a little bit of shunt steering to see if we can zero 2C01 with just shunts but doesn't seem like we are able to. We end up losing beam at the entrance of the lambertson.

Able to get AAT03 closer to design but AT01 a little further. Took alot of corrector use out of 2C00V though.

Figs 1-6 Before
Figs 7- After

Log Number: 4480254Logbook(s): 

• ELOG

Body: 

Performed HCO of Hall B and C

Items of note:

HALLB

• VIP2H04 - HV and Status Alarm

HALLC

Log Number: 4480248Logbook(s): 

• ELOG
• INCLOG

Body: 

Hall B BCM and BPM cavities tuned - https://logbooks.jlab.org/entry/4480247

Log Number: 4480247Logbook(s): 

• ELOG
• INCLOG

Body: 

IBC2C24 - cavity tune complete, center frequency set to 1497.0000 MHz

IPM2C24A - I X Y cavity tune complete, center frequency set to 1497.0000 MHz

IPM2C21A - I X Y cavity tune complete, center frequency set to 1497.0000 MHz

Log Number: 4480242Logbook(s): 

• ELOG

Body: 

Hall B: VBV2C21 24 Vdc connector is connected to Solenoid; VBV2C21 is Open. Tried Starting VIP2H04 several times was unsuccessful, informed Hall B Tech Morgan Cook IV; to keep trying every 10 minutes to turn On, if unable to start today turn Digitel Controller Off and continue to Pump with Turbo Pump Cart, then try again tomorrow.

Log Number: 4480241Logbook(s): 

• ELOG

Entry Makers: mockBody: 

Noticed xBD not colinear in the upper passes. Checked 2nd pass separation and they we not colinear but ~0.5mm. Adjusted separator phase to bring them closer to alignment.

xC transport steering still needs work.

Log Number: 4480239Logbook(s): 

• ELOG

Entry Makers: mockBody: 

Log Number: 4480238Logbook(s): 

• ELOG
• BTLOG

Tags: 

• Autolog

Body: dogCalc V0-14 download

hostname: opsl03
CED workspace: OPS
CED login_key: pro

Log Number: 4480237Logbook(s): 

• ELOG

Entry Makers: mockBody: 

When first sending B beam past 9R dumplette, found that B beam is recirculating and D beam extracting. Must be additional fallout from the laser phase flip that occurred on Owl shift (linked logs).

Adjusted Hall B and Hall D laser phase +180 degrees to restore 5th pass horizontal extraction.

Log Number: 4480236Logbook(s): 

• ELOG

Entry Makers: bbarkerBody: 

Experinced this a few days ago, passed manuel test this time too

Log Number: 4480231Logbook(s): 

• ELOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.1383 Peak 2 - u Sigma: 0.3504 Peak 3 - y Sigma: 0.6460

Log Number: 4480228Logbook(s): 

• POLOG
• ELOG

Body: 

there is a divider in the chassis that provides 499,249.5,70 and 35 MHz frequencies to the laser rf system. If the divider changes state due to any glitch in the power, that would cause the phase flip. It would cause all the operating lasers to flip the phase and it won't be visible. I believe only C laser was running at this time, that's why it was only noticed on C. FSD functionality was implemented on the phase flip for this very reason. Operator intervention is required to find the phase set points again, whenever this happens. Should I add this as guidance for phase flip?

Log Number: 4480223Logbook(s): 

• ELOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.2022 Peak 2 - u Sigma: 0.1678 Peak 3 - y Sigma: 0.3723

Log Number: 4480222Logbook(s): 

• ELOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.1520 Peak 2 - u Sigma: 0.2838 Peak 3 - y Sigma: 0.3063

Log Number: 4480220Logbook(s): 

• ELOG

Entry Makers: kazimiBody: 

We have beam setups for different Wien angles to the ILD saved, 0,-3,-51 (listed below).
My recommendation is to start with -51 angle while Hall D is down.

Log Number: 4480218Logbook(s): 

• ELOG

Body: ACC=>VACUUM=>WEST_ARC=>ARCA=>VIPAA02 has been enabled in alarm handler

Setpoint for VIPAA02 to 1e-5 and changed the voltage output from 5200V to 4800V. Now showing better readback.
https://logbooks.jlab.org/entry/4480211

Log Number: 4480219Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Fig 1: Main screen only shows a readback for the three plates, with 8.4 for Plate 0, 14.6 for Plate 1, 20.8 for Plate 2. This seems pretty high.

Fig 2: Expert screen shows the input field for these are set to a much lower value. These values match a log entry I was reading that had screenshot of the dump limits from a tech note. ELOG is linked.

Fig 3: Archiver shows Plate 0 flipping between the values in the setpoin field and the readback field.

Fig 4: Shows a reboot/restore of iochlc3 at one of the time periods on the plot.