J. Kissel, E. Merilh, J. Warner, B. Weaver
As we begin to figure out what it means to be on the relocking team, we've made our best attempt at organizing / coordinating all planned maintenance day activities such that we understand their impact on the IFO and can recover from them as quickly as possible. See below. Have patience while we figure this "new" "system" out with you!
All tasks have been arranged and coordinated so as to not conflict with one another. All tasks and estimated times for completion will be added to the reservation system when they are scheduled, and after the task manager has checked in with the operator. PLEASE PAY ATTENTION TO THE RESERVATION SYSTEM (to help, we're going to put it on the big projector during maintanence). As always, please keep the operators informed of your activities as accurately as possible / reasonable throughout this maintenance day so the reservation list can be adjusted accurately. We appreciate your cooperation!
Maintenance Day Timeline:
- SDF system for affected front end computers cleared out (Operators on Shift, Re-Locking Team)
- EX/EY SEI/SUS systems brought to OFFLINE / SAFE via gaurdian (Operators on Shift, Re-Locking Team)
- IMC brought to OFFLINE via guardian (though check to see if bringing HAM2/HAM3 SEI to damped does it for you!) (Operators on Shift, Re-Locking Team)
- CS SEI systems brought to OFFLINE via guardian (Operators on Shift, Re-Locking Team)
- PSL - Re-Align PMC/FSS - scheduled to start at 08:00PDT ET ~2hrs (J. Oberling)
- Replace EX/EY SUS FE Computers - ET ~2hrs This will impact anything on the Dolphin Network and ALL End Station Models - This requires the IFO to be placed in a state for such activities to be performed. (R. McCarthy / J. Batch)
- TMDS EX Piping - ET ~4hrs (B. Gateley)
- PEM Positioning - This will be going on in multiple places in VEAs. Sensor correction will be turned off during these activities - ET ~2hrs (V. Roma, J. Palamos, F. Clara)
- HEPI CS Pump Maintenance (CS) - ET ~2hrs - This requires the IFO to be placed in a state for such activities to be performed. (H. Radkins)
- VAC MY Leak Hunting - ET~ 4hrs (K. Ryan, G. Merano)
- 9.1MHz VCO Install (swap only) - ET ~1hr (testing to be done in the afternoon) (F. Clara)
- ISS Servo Box Install (swap only) - ET ~1hr (S. Karki, K. Izumi)
- PSL - Periscope Alignment (to be done immediately following PMC/FSS Re-alignment. ET ~4hrs (R. Schofield)
- PEM CAL - This will be going on in multiple places in VEAs. Sensor correction will be turned off during these activities - ET ~2hrs (V. Roma, J. Palamos)
- Quad FE model changes - ET ~1hr (J. Kissel)
- ODC FE model changes - ET ~1hr (S. Ballmer)
- HEPI EX/EY Pump Maintenance - ET ~ 2hrs (H. Radkins)
- Epics Gateway Restart (D. Barker)
- Reconfigure FE EDCU (D. Barker)
- DAQ Restart (D. Barker)
- post-swap testing of 9.1MHz VCO and ISS Servo box (K. Izumi)
- Beckhoff Restart (P. Thomas?, if not D. Barker, J. Batch, S. Dwyer)
Kissel typically fleshes out the above task lists on the Monday before the Tuesday maintenance period and (with help from the operator) shops around for interferences and conflicts. This week we set the timeline of tomorrows task list order on the CR whiteboard such that all parties know roughly when their slated time frame is during the maintenance window. The operator will keep the parties on track tomorrow. The attached picture is of the whiteboard "hand-gant" in the event you want to see the above list in a different format.