| Work Permit | Date | Description | alog/status |
| 6608 | 4/26/2017 13:22 | Add EPICS channels to the new FMCS IOC to report on the run status of the fire pumps in the WS. Setup verbal alarms and cell phone text alarms if the pumps are started. | |
| 6607 | 4/25/2017 13:48 | Make the new nds2-client 0.14.0 the default on debian 8 systems. This includes updating the matlab config for /ligo/apps/debian/matlab* to automatically load the 0.14.0 client. This will NOT change the nds client for the guardian. This was a request of commissioning/recovery staff after the client was installed. | 35781 |
| 6606 | 4/25/2017 10:55 | engage more aggressive CHARD Y cut off, add to guardian | |
| 6605 | 4/25/2017 10:28 | Investigate how oplev glitches are coupling to DARM with damping off. Unplug fiber from laser so that no light goes into chamber, watch for glitches in DARM. Borrow PEM ADC channel that is monitoring sus rack power to monitor the current fed to the laser diode to see if this witnesses oplev laser glitches. This will involve leaving the cooler lid ajar. No viewports will be exposed. | 35774, 35798 |
| 6604 | 4/25/2017 10:22 | Remove black glass beam dump from POP path on ISCT1 (temp. replace with the razor dump). Drag wipe glass pieces. Re-install black glass dump. | 35636 |
| 6603 | 4/25/2017 9:24 | rack up new Sun X2200 as a 4th DMT machine (h1dmt3). Requires powering down h1dmt2 and relocating it to make space. | 35783 |
| 6602 | 4/25/2017 9:21 | Revert calibration code running on the DMT from gstlal-calibration-1.1.5 to gstlal-calibration-1.1.4. This is the recommendation from SCCB and John Zweizig is available to help with this. 1.Run "yum downgrade gstlal-calibration" to revert to gstlal-calibration-1.1.4 on the DMT computers. 2. Edit /home/dmtexec/pars/H-DQmod_O2.json to remove SRC channels. 3. Aaron to update the calibration configuration/filter files. 4. Aaron to restart htCalib_H1, htCalibR_H1 and DMTDQ_H1 monitors. | 35783, 35772 |
| 6601 | 4/25/2017 8:26 | Taking Indian visitors on tours of LVEA and around site. | |
| 6600 | 4/24/2017 17:39 | Leak test LN2 vaporizers located outside next to Dewars. We will flow LN2 from Dewar into vaporizer (with a 15 psi pressure relief valve at exit) to locate any cracked, leaky welds. We will also install new GN2 flow meters. This should not disrupt observing, but we will let the operator know when we do this work. | |
| 6599 | 4/24/2017 16:37 | Re-measure the alignment sensing matrix to reproduce measurements from alog 35694 | 35694 |
| 6598 | 4/24/2017 15:04 | I would like to check the HWS beam health at the end stations and test Elli's PZT offsets from alog 17860 with PZT output drifts taken into account. | |
| 6597 | 4/24/2017 14:26 | Comment out a line in violin mode damping 1 and 2 that turns on the damping gain for 4.7kHz (meaning, the mode will not be damped by Guardian). Then wait and see if the mode become less of a problem. | 35759 |
| 6596 | 4/24/2017 13:13 | Soft close GV5 & GV7 to protect beam tube before craning activities, GVs will be open when craning activities are finished. | |
| 6595 | 4/24/2017 12:37 | Extend the current operator DMT restart instructions to cover bad HofT no linked to CDS-CRC errors. Requires additional Verbal Alarm. | |
| 6594 | 4/24/2017 11:31 | Install the latest nds2_client (0.14.0) on the Debian 8 cds workstations (Dave has requested that I do not install this for Ubuntu12 as those workstations are being removed and guardian is not being updated). This will not be set as the default and should not impact running software. | 35783, 35771 |
| 6593 | 4/24/2017 11:12 | Tweak output power of oplev laser to attempt to lessen frequency and severity of glitching. No viewports will be exposed during this work. BRSy will need to be disabled, as the oplev laser is located next to the BRSy enclosure. | |
| 6592 | 4/24/2017 10:36 | Move engine hoist into bier garden. Move clean room into bier garden after BRS removal. All of this work is in preparation for the upcoming vent on 05/08/2017. | 35785, 35768 |
| 6591 | 4/24/2017 10:33 | Swap the laser in the ITMy optical lever. Current laser (SN 191) was found to be running very warm, which is increasing the glitching of the laser. Will install a known working laser (SN 189-1) and investigate laser SN 191 in the Pcal lab. No viewports will be exposed during this work. | 35776 |
| 6590 | 4/21/2017 14:05 | Move all U12 workstations from LVEA and End Stations to CUR for updates. Replace with Debian8 as available. | 35783 |
| 6589 | 4/19/2017 10:18 | Until the DMT calibration code bug is fixed, provide a mechanism for the operator to restart the DMT calibration code if a DAQ error caused by a SUS-EY glitch has triggered the marking of all HofT frames invalid. | |
| Past WPs | |||
| 6584 | 4/17/2017 14:37 | Run new cabling for temperature sensors from the mechanical room into the LVEA. Runs in the LVEA are to the following chambers: HAM2, HAM3, HAM4, HAM5, BSC1, and BSC3. Work will require climbing on some of the chambers. This work is part of the HVAC upgrade being done by Apollo. | 35643, |
| 6577 | 4/14/2017 11:39 | Remove the channels that have already been migrated to BACNet during the FMCS upgrade from the existing FMCS IOC where they are now invalid. Start and run a separate BACNet IOC for these channels and additional ones created during the upgrade. Continue this process as the upgrade continues. | 35792, 35783 |