| Work Permit | Date | Description | alog/status |
| 6546.html | 03/27/17 04:05 PM | Create and test a Guardian node that will turn on and adjust a set of Cal lines for later analysis. | 35153 |
| 6545.html | 03/27/17 01:43 PM | Inject blip-like glitches to test performance of NOISEMON channels | 35116 |
| 6544.html | 03/27/17 01:20 PM | We will add a new signal path in h1omc and h1calcs models in order to implement the DCPD cross correlation scheme (whose ECR, E1700107, has been approved). Because this implementation is independent of the main interferometer control signals, we don't expect any impact on locking or sensitivity. DAQ restart is required. | 35156, 35139, 35115 |
| 6543.html | 03/27/17 09:56 AM | Upgrade LHO CDS login servers cdsssh, cdslogin and opslogin to Debian8. Needed because current OS is near end-of-support. | 35119 |
| 6542.html | 03/27/17 09:03 AM | Repair underground water leak on feed line to VPW. This will require digging up asphalt and digging down to the PVC line. | |
| 6541.html | 03/27/17 08:40 AM | Perform scheduled maintenance to scroll compressors at Y-MID vent/purge-air supply skid. Maintenance activity will require for the compressors to run for brief periods of time to check compression. Lock-out/tag-out power to skid as required. | 35149 |
| 6540.html | 03/23/17 12:57 PM | Reduce crontab tasks on h1hpipumptrcl[l0,EX] to be that used on EY unit. Check local clocks are correct. | 35141 |
| 6539.html | 03/23/17 11:36 AM | We would like to "borrow" a HWS PCIe card from one of the end stations (whichever one we can get to on Tuesday) and put it on the spared HWS machine at the corner station so we can get HWSY running. | Transfer of PCIe card completed. |
| 6538.html | 03/23/17 11:03 AM | Remove the INSTAIR alarms for the MX compressor from the cell phone text alarm system. | |
| 6537.html | 03/23/17 07:04 AM | Swap out the harmonic frequency generator with a spare to see if this is the cause of glitches in the RF 45. | Swap complete, now monitor for glitches. |
| Updates to previous Work Permits | |||
| 6527.html | 03/19/17 09:36 PM | Access to pcal system and camera to take pictures and possibly move the pcal beams | 34980, 35137 |