TITLE: 02/21 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY:

Primary Ongoing Activities

1. CDS Work is unfinished (facing some delays that started with the last switch they went to in the mechanical room).
2. HAM8 Vent is done
3. SQZT work is ongoing

Control Room Log (02/20) so far..

• 16:00 SUSEX and ISI to safe states
• 16:30 Dolphin EX fencing from ctrl rm
  • Had to disable long range switch that supports EY, EX so EY no longer communicating with End Station
• 17:00 UTC ISI EX Stage 1,2 watchdog tripped - CDS Work ongoing
• 17:00 UTC SEI EX SW watchdog tripped
• 17:57 UTC HAM8 SEI set to offline (in prep for work)
• 18:39 -
  • Dave, MX
  • Fil, Tony, Jonathan, Ryan S, EX
• 19:28 UTC - Xarm is Done - Moving to FCES after lunch

• 20:15 Richland bomb squad doing exercises - won’t affect us.
• Morning-Noon: Two Tours
• 20:38 UTC - CDS FCES CDS Work Done
• 20:40 UTC - CDS EY, MY CDS Work Started
• 21:14 UTC - SEI Keeping eye on HAM 5,6,7 SEI States per VAC work
• 21:19 UTC - SEI Restored HAM1-4, BSC2, IY, IX back to “normal” seismic states
• 22:00 UTC - VAC HAM 8 Vent Complete
• 22:43 UTC - CDS Y-Arm Work is now Done (and recovered)
• 22:45 UTC - CDS Now moving onto mechanical room - the last switch of the day
  • This did not go as expected and they will need more time for this tomorrow, potentially undoing some work from today (morale seemed high though).

LOG:

TCS Chiller Water Level Top-Off BiWeekly - Closes FAMIS 26168

Neither chiller was under its threshold min

TCS Y - Added ~300ml

TCS X - Added ~150ml

Leak Tub is dry

Closes Weekly FAMIS Task 25979

ETMX_ST1_CPSINF_V2 BSC High Freq noise is elevated.

FAMIS 20016

PMC reflected power has continued to increase while transmitted power has been decreasing.

LVEA is STILL in LASER HAZARD

Primary Ongoing Activities

1. CDS Work is done in EX, MX and is planning to begin FCES after lunch
   1. Initial plan was EY/MY after lunch but re-coordinated to FCES.
2. HAM8 pump is ongoing
3. SQZT work is ongoing

Control Room Log (02/20) so far..

• 16:00 SUSEX and ISI to safe states
• 16:30 Dolphin EX fencing from ctrl rm
  • Had to disable long range switch that supports EY, EX so EY no longer communicating with End Station
• 17:00 UTC ISI EX Stage 1,2 watchdog tripped - CDS Work ongoing
• 17:00 UTC SEI EX SW watchdog tripped
• 17:57 UTC HAM8 SEI set to offline (in prep for work)
• 18:39 -
  • Dave, MX
  • Fil, Tony, Jonathan, Ryan S, EX
• 19:28 UTC - Xarm is Done - Moving to FCES after lunch

WP11693 Vicky, Camilla, Chris. 

In preparation for the for HAM8 +Y door removal, after HAM8 was been vented, we put guillotine in the viewport and removed the bellows between HAM8 and SQZT8. Bellows is wrapped in foil on top of SQZT8. We rolled SQZT8 enclosure out of the way of the door crew (it's position was already marked and parts on table secured 75831, 75829).

Tue Feb 20 08:10:02 2024 INFO: Fill completed in 9min 58secs

Jordan confired a good fill curbside. Note this fill ran at 8am today before the CDS network upgrade work commenced.

TITLE: 02/20 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 5mph Gusts, 4mph 5min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.37 μm/s
QUICK SUMMARY:

Control room workstations were updated and rebooted.  Operating system packages and conda packages were updated.

In conda, ndscope was updated to 0.19.1, with numerous improvements.

Diaggui was updated to 4.0.4, which fixes a crash when loading certain xml files.

Daniel, Dave:

h1ecatc1, the Beckhoff slow controls system, crashed at 15:38 this afternoon. The EDC is showing 35365 disconnected channels. The computer is completely unresponsive, including its management port. It will need a manual reset.

The alarms system restarted itself at this time. The ongoing HAM6 alarms remain bypassed, and in addition I have bypassed some invalid temperatures channels

Bypass will expire:
Tue Feb 20 03:49:26 AM PST 2024
For channel(s):
    H0:VAC-LX_Y0_PT110_MOD1_PRESS_TORR
    H0:VAC-LY_Y1_PT120B_PRESS_TORR
    H1:PEM-C_CER_RACK1_TEMPERATURE
    H1:PEM-C_MSR_RACK1_TEMPERATURE
    H1:PEM-C_MSR_RACK2_TEMPERATURE
    H1:PEM-C_SUP_RACK1_TEMPERATURE
 

WP11702

The file copy completed at 12:23 Sun 18th Feb. This morning I reconfigured NDS1 daqd to serve the past 6 months of data from the permanent archive area, daqd was restarted at 08:44 this morning.

The old files were then deleted from TW1's SSD-RAID between 08:53 and 10:54, taking 2hours 1min.

Mon Feb 19 10:11:56 2024 INFO: Fill completed in 11min 52secs

Start time has been changed to 08:00 for tomorrow's early fill prior to CDS network upgrades.

Sun Feb 18 10:10:41 2024 INFO: Fill completed in 10min 37secs

Sat Feb 17 10:10:46 2024 INFO: Fill completed in 10min 42secs

WP11702 TW1 offload

I've started the process of offloading the past 6 months of raw minute trends from TW1's SSD-RAID to h1ldasgw1's permanent storage.

The first step was to freeze the almost full directory and switch TW1 over to writing to a new empty area, and then temporarily configuring NDS1 to serve data from the frozen dir while the file copy is in progress.

To this end, NDS1 daqd was restarted at 10:14 PST this morning.

Today's activities:
- HAM7 pumpdown status: ~3.3E-6 Torr
- Corner pumpdown status: ~3.9E-1 Torr. On Tuesday, transitioning to Turbo (Y-manifold; OMC; HAM6)
- EX pumpdown status: 3.75E-8 Torr: the post-vent RGA scan is ready, the results will be in the comment comment section, once they are published. The comparison with past RGAs is also coming next week. If the results will be considered satisfactory, the Ion-pump will be valved in. The GV will remain closed during FAC works
- The purge air supply at FCES is switched on, in order to start HAM8 vent first thing next week

Naoki, Nutsinee, Daniel

We installed all the optics for PMC and locked the PMC with p-polarization. We will lock the PMC with s-polarization and align SHG, CLF, seed next week.

First we put a HWP before PMC and changed the beam to the p polarization since the p-pol has much lower finesse in PMC and it is easy to align. The HWP angle is 152 for p-pol and 108 for s-pol. 

We aligned two steering mirrors before PMC. Fig. 1 and 2 show the PMC trans (blue) and refl (red) with PMC scan. The mode matching is 93% and the refl dip reaches 88% from the maximum.

We found that the label of the pick off mirror before PMC REFL PD says R=5% for s-pol, but it was actually R=90% for s-pol and R=70% for p-pol. The PMC REFL power is ~30mW and more than 20mW was injected to PMC REFL PD, which is a lot. So we replaced this mirror with the mirror which is R=8% for s-pol and R=1% for p-pol.

Then we adjusted the demod phase of PMC PDH signal and locked the PMC with p-pol. The UGF is 1.3 kHz and phase margin is 67 deg as shown in Fig. 3. We accepted the SDF related to PMC as shown in Fig. 4. 

Note that we will have 20 times more optical gain with s-pol because of higher finesse. Also we will have 8 times more power at PMC REFL PD with s-pol because of the pick off mirror. So we need to reduce the gain by 160 with s-pol to have the same UGF as p-pol.