Difference between revisions of "December 19, 2022"
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** [https://logbooks.jlab.org/entry/4103094 Swing 12/18] | ** [https://logbooks.jlab.org/entry/4103094 Swing 12/18] | ||
** [https://logbooks.jlab.org/entry/4103227 Owl 12/19] | ** [https://logbooks.jlab.org/entry/4103227 Owl 12/19] | ||
| − | * Today | + | |
| − | ** Hall C in | + | * Today (12/19) |
| − | + | ** Beam taken away at 7am as scheduled to begin the scheduled accelerator down. | |
| + | ** Hall C in Restricted Access. | ||
** SHMS and HMS magnets ramped to zero. | ** SHMS and HMS magnets ramped to zero. | ||
| − | ** | + | ** SHMS and HMS HVs are off. |
| + | ** Dave Meekins arrived at 8:30AM to begin warming up the target. | ||
| + | |||
| + | *Yesterday (12/18) | ||
| + | ** Shortly after (12/18) Owl shift started, there was another PSS communication failure and Hall C suddenly dropped to restricted access. | ||
| + | *** The tech on-call wasn't able to restore the system. | ||
| + | *** The expert arrived at 8AM and made hardware replacements. | ||
| + | *** Hall C back to beam permit at 12:30 PM. | ||
| + | *** [https://logbooks.jlab.org/entry/4103028 All hardware related to communication interface in the hall has been replaced. Radiation damage is the suspect.] | ||
| + | ** Smooth running on Setting 2 of high x HMS 35 degrees until beam was taken away at 7am as scheduled. | ||
| + | ** A bit more than half of Setting 2 is complete. | ||
| + | |||
| + | |||
= Current Run Plan = | = Current Run Plan = | ||
| − | * | + | * Is there any work that needs to be coordinated by RC today? |
| + | ** (I don't think so) | ||
| + | * No Hall C meeting today. | ||
= Notices in Effect for Shift Crew = | = Notices in Effect for Shift Crew = | ||
| Line 46: | Line 61: | ||
= Current Issues = | = Current Issues = | ||
| − | * | + | * Beam Energy Measurement |
| + | ** I was assured at the 8:00AM meeting today that they are taking the incident seriously and are still investigating. | ||
| + | ** Doug mentioned that they are considering reporting it as an "incident" to the DOE in part due to all the equipment damage. | ||
| + | * PSS issues. | ||
| + | ** Should be fixed now with the new hardware. | ||
| + | ** BUT it seems very wired to me that the failure mode is to drop to restricted access. | ||
| + | * Unser | ||
| + | ** Front end electronics suspected to be damaged from the radiation from the beam energy measurement. | ||
| + | *** (Might be a good idea to find some evidence of this with the scalers). | ||
| + | ** [https://logbooks.jlab.org/entry/4103102 Dave Mack has been coming up with a plan to debug it and will work on it before we come back in January]. | ||
| + | * Radiation Damage in general. | ||
| + | ** We should be on the lookout for other hardware that may have been damaged by radiation. | ||
| + | |||
= Planned Accesses to the Hall = | = Planned Accesses to the Hall = | ||
| Line 55: | Line 82: | ||
= Special Requests = | = Special Requests = | ||
| − | * | + | * Happy Holidays! |
Latest revision as of 11:24, 19 December 2022
RC Meeting Information
RC Daily Meetings are at 11:00 (am) via Zoom and in person in the counting house meeting room (2nd floor)
- Zoom remote connection information:
Join ZoomGov Meeting https://jlab-org.zoomgov.com/j/1607100885?pwd=ZFBsRTFsYm5Zb0laZ0tyZXNjcEE0QT09 Meeting ID: 160 710 0885 Passcode: 595071 One tap mobile +16692545252,,1607100885# US (San Jose) +16468287666,,1607100885# US (New York) Dial by your location +1 669 254 5252 US (San Jose) +1 646 828 7666 US (New York) +1 669 216 1590 US (San Jose) +1 551 285 1373 US 833 568 8864 US Toll-free Meeting ID: 160 710 0885 Find your local number: https://jlab-org.zoomgov.com/u/ab2CekLXgQ
Useful Links
Current Status
- Shift Summaries
- Today (12/19)
- Beam taken away at 7am as scheduled to begin the scheduled accelerator down.
- Hall C in Restricted Access.
- SHMS and HMS magnets ramped to zero.
- SHMS and HMS HVs are off.
- Dave Meekins arrived at 8:30AM to begin warming up the target.
- Yesterday (12/18)
- Shortly after (12/18) Owl shift started, there was another PSS communication failure and Hall C suddenly dropped to restricted access.
- The tech on-call wasn't able to restore the system.
- The expert arrived at 8AM and made hardware replacements.
- Hall C back to beam permit at 12:30 PM.
- All hardware related to communication interface in the hall has been replaced. Radiation damage is the suspect.
- Smooth running on Setting 2 of high x HMS 35 degrees until beam was taken away at 7am as scheduled.
- A bit more than half of Setting 2 is complete.
- Shortly after (12/18) Owl shift started, there was another PSS communication failure and Hall C suddenly dropped to restricted access.
Current Run Plan
- Is there any work that needs to be coordinated by RC today?
- (I don't think so)
- No Hall C meeting today.
Notices in Effect for Shift Crew
Current Issues
- Beam Energy Measurement
- I was assured at the 8:00AM meeting today that they are taking the incident seriously and are still investigating.
- Doug mentioned that they are considering reporting it as an "incident" to the DOE in part due to all the equipment damage.
- PSS issues.
- Should be fixed now with the new hardware.
- BUT it seems very wired to me that the failure mode is to drop to restricted access.
- Unser
- Front end electronics suspected to be damaged from the radiation from the beam energy measurement.
- (Might be a good idea to find some evidence of this with the scalers).
- Dave Mack has been coming up with a plan to debug it and will work on it before we come back in January.
- Front end electronics suspected to be damaged from the radiation from the beam energy measurement.
- Radiation Damage in general.
- We should be on the lookout for other hardware that may have been damaged by radiation.
Planned Accesses to the Hall
Planned Accelerator Configuration Changes
Special Requests
- Happy Holidays!
