40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
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ID Date Author Type Category Subject Text Attachments
  16075   Thu Apr 22 14:49:08 2021 gautamUpdateComputer Scripts / Programsrossa added to RTS authorized keysThis is to facilitate running of scripts
like the CDS reboot script, mx_stream restart,
etc, from rossa, without being pwd prompted
  16074   Thu Apr 22 14:41:55 2021 ChubUpdatePSLNew HEPA speed controlWhen adjusting the blower speed, give the
blower at least 30 seconds to speed up or
slow down to the set speed.  The flywheel
  16073   Thu Apr 22 14:22:39 2021 gautamUpdateSUSSettings restoredThe MC / WFS stability seemed off to me.
Trending some channels at random, I saw that
the MC3 PIT/YAW gains were restored mixed
  16072   Thu Apr 22 12:17:23 2021 Anchal, PacoUpdateSUSMC1 and MC3 Suspension Optimization Summary    
  16071   Thu Apr 22 08:50:21 2021 AnchalUpdateSUSMC2 Suspension Optimization summaryYes, during the AC balancing, POS column
was set to all 1. This table shows the final
values after all the steps. The first 3 columns
  16070   Thu Apr 22 01:42:38 2021 KojiSummaryElectronicsHV Supply ComparisonNew HV power supply from Company 'M'
has been delivered. So I decided to compare
the noise levels of some HV supplies in the
  16069   Wed Apr 21 19:43:20 2021 KojiUpdatePSLNew HEPA speed controlThe new HEPA speed controllers are attached
at the middle of the HEPA unit (not at the
edge of the unit)... (Attachment
  16068   Wed Apr 21 19:28:03 2021 AnchalUpdatePSLPSL/IFO recovery[Anchal, Koji]

Removed the top sheet

first from the door side so that any dust
  16067   Wed Apr 21 18:49:29 2021 ranaUpdateSUSMC2 Suspension Optimization summarythe
POS column should be all 1 for the AC balancing.
  16066   Wed Apr 21 15:50:01 2021 Anchal, PacoUpdateSUSMC2 Suspension Optimization summary
Coil Balancing DC and AC Gains

  16065   Wed Apr 21 13:10:12 2021 KojiUpdateGeneralPSL HEPA MaintenanceIt's probably too late to say but there
are/were two boxes. (just for record)

  16064   Wed Apr 21 12:56:00 2021 JordanUpdateVACEmpty N2 TanksInstalled T2 today, and leaked checked
the entire line. No issues found. It could
have been a bad valve on the tank itself.
  16063   Wed Apr 21 11:38:27 2021 Anchal, PacoUpdateSUSMC2 Damping Gains OptimizedWe did a step response test with MC2 Suspensoin
Damping Gains and optimized them to get <5
oscillations in ringdown.
  16062   Wed Apr 21 11:09:57 2021 yehonathanUpdatePSLLaser amplifierI went to the TCS lab to take a look at
the chillers lying around. I spotted two
  16061   Wed Apr 21 11:01:37 2021 RanaUpdateCDS40m LSC simPlant modelThe controller would be in the c1sus model,
and connects to the c1sup plant model. So
the controller doesn't go in the plant
  16060   Wed Apr 21 10:59:07 2021 ranaSummaryCamerasnote on new GigE cam @ 1064Note
from Stephen on more sensitive Baslers.
  16059   Wed Apr 21 10:03:01 2021 Ian MacMillanUpdateCDS40m LSC simPlant modelSo I am stuck on how to add the control
block to my model. I am trying to make it
as simple as possible with just a simple
  16058   Wed Apr 21 05:48:47 2021 ChubUpdateGeneralPSL HEPA MaintenanceYikes!  That's ONE filter. 
I'll get another from storage.
  16057   Wed Apr 21 01:14:03 2021 KojiUpdatePSLPSL Table (sort of) covered / HEPA "chimney"I also located the (possible) HEPA filters
in the lab. (Attachments 1~3)

Oh! This is NO-NO! We can't
  16056   Wed Apr 21 00:08:15 2021 KojiUpdatePSLPSL Table (sort of) covered / HEPA "chimney"Shutdown Procedure:
PSL Shutter closed / MC Autolocker
disabled / PSL mechanical shutter closed
  16055   Tue Apr 20 18:19:30 2021 AnchalUpdateSUSMC2 coil balanced at DCFollowing up from morning's work, I
balanced the coils at DC as well. Attachment
1 is screenshot of striptool in which blue
  16054   Tue Apr 20 10:52:49 2021 Anchal, PacoUpdateSUSAC gain coil output balancing for IMC[Paco, Anchal]

We adopted the following
procedure to balance the coil output gains
  16052   Mon Apr 19 21:54:55 2021 YehonathanUpdateCDSUpdated c1auxey wiring planExcept for the feed-throughs that require
a DB9-M connector I finished wiring and labeling
the Acromag, following Jon's updated
  16051   Mon Apr 19 19:40:54 2021 YehonathanUpdateGeneralGlue Freezer completely frozen{Paco, Yehonathan}

We broke the last chunk of ice
and cleaned the fridge. We move the fridge
  16050   Mon Apr 19 13:15:20 2021 Ian MacMillanUpdateCDS40m LSC simPlant modelThe x1SUSsim model on the docker was made
in a more recent version of Simulink so I
updated Matlab (see
  16049   Mon Apr 19 12:18:19 2021 Anchal, PacoUpdateSUSTested proposed filters for POS colum in MC2 output matrixThe filters were somewhat successful, how
much we can see in attachment 1. The tip
about difference between eigenmode basis
  16048   Mon Apr 19 10:52:27 2021 YehonathanUpdateGeneralGlue Freezer completely frozen{Anchal, Paco, Yehonathan}

We took the glue fridge outside.
  16047   Mon Apr 19 09:17:51 2021 JordanUpdateVACEmpty N2 TanksWhen I came into the lab this morning,
I noticed that both N2 tanks were empty.
I had swapped one on Friday (4-16-21) before
  16046   Sun Apr 18 21:29:55 2021 ranaUpdatePSLLaser amplifier
Ideally, we put the chiller outside
of the interferometer area. The PSL chiller
used to be in the control room near the door
  16045   Fri Apr 16 19:07:31 2021 YehonathanUpdateGeneralGlue Freezer completely frozenThere is still a huge chunk of unmelted
ice in the fridge. I moved the content of
that fridge in the main fridge and put "do
  16044   Fri Apr 16 18:21:36 2021 YehonathanUpdatePSLLaser amplifierI surveyed a bit the 1X1/2 area to plan
for the installation of the laser amplifier.

There is a vacancy at the bottom
  16043   Fri Apr 16 15:47:58 2021 ranaUpdateSUSTested proposed filters for POS colum in MC2 output matrixLooks mostly right, but you
used the OSEM sensors as readbacks.
  16042   Fri Apr 16 11:36:36 2021 Anchal, PacoUpdateSUSTested proposed filters for POS colum in MC2 output matrixWe tried two sets of filters on the output
matrix POS column in MC2. Both versions failed.
Following are some details.
  16041   Fri Apr 16 11:31:00 2021 ranaUpdateelogelog stuck ~10 AM todayfound it unresponsive. Restarted fine using
procedure documented in wiki
  16040   Fri Apr 16 10:58:16 2021 YehonathanUpdateGeneralGlue Freezer completely frozen{Paco, Anchal, Yehonathan}

We emptied the fridge and moved
the amplifier equipment on top of the amplifier
  16039   Fri Apr 16 00:21:52 2021 KojiUpdateGeneralGlue Freezer completely frozenI was looking at the laser head/amp and
somehow decided to open the glue freezer.
And it was stuck. I've managed to open
  16038   Thu Apr 15 18:33:39 2021 KojiUpdateCDSMore 16bit ADC adapter boardsWe received 10x 16bit ADC adapter boards
from Todd. S2100687~S2100696

The number of soldered resistors
  16037   Thu Apr 15 17:24:08 2021 JonUpdateCDSUpdated c1auxey wiring planI've updated the c1auxey wiring
plan for compatibility with the new suspension
electronics. Specifically it is based on
  16036   Thu Apr 15 15:54:46 2021 gautamUpdateIOOWaveplate commissioning - hardware installed[jordan,
  16035   Thu Apr 15 11:41:43 2021 AnchalUpdateSUSProposed filters for output matrix aka F2A aka F2PHere' s aquick update before we leave
for lunch. We have managed to calculate some
filter that would go on the POS column in
  16034   Thu Apr 15 09:46:24 2021 YehonathanUpdatePSLLaser amplifierSome more relevant documents provided by

  16033   Wed Apr 14 23:55:34 2021 gautamUpdateElectronicsHV Coil driver assemblyI've occcupied the southernmost electronics
bench for assembling the 4 production version
HV coil driver chassis. I estimate it will
  16032   Wed Apr 14 19:48:18 2021 gautamUpdatePSLLaser amplifierA couple of years ago, I got some info
about the amplifier setup at the sites from
Terra - sharing here in case there is some
  16031   Wed Apr 14 17:53:38 2021 AnchalUpdateSUSPlan for calculating filter banks for output matrix aka F2A aka F2PPlan of action

the transfer functions of the suspension
plant from actuated DOF to sensed DOF. We'll
  16030   Wed Apr 14 16:46:24 2021 AnchalUpdateGeneralIFO StateThat makes sense. I assumed that IFO-STATE
is configured as you have proposed it to
be configured. This could be implemented
  16029   Wed Apr 14 15:30:29 2021 ranaUpdateGeneralSorry, it was meMaybe tighten the tensioner on the door
closer so that it closes by itself even in
the low velocity case. Or maybe just use
  16028   Wed Apr 14 14:52:42 2021 gautamUpdateGeneralIFO StateThe C1:IFO-STATE
variable is actually a bunch (16 to be precise)
  16027   Wed Apr 14 13:16:20 2021 AnchalConfigurationComputers40m Control Room Changes
I have confirmed that the old two
monitors' backlighting is not working.
One can see the impression of the display
  16026   Wed Apr 14 13:12:13 2021 AnchalUpdateGeneralSorry, it was meSorry about that. It must be me. I'll
make sure it doesn't happen again. I
was careless to not check back, no further
  16025   Wed Apr 14 12:27:10 2021 gautamUpdateGeneralLab left open againOnce again, I found
the door to the outside in the control room
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