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ID Date Authorup Type Category Subject Text Attachments
  16728   Tue Mar 15 14:10:41 2022 AnchalSummaryCDSc1su2 model remade, reinstalled, restarted after the updateI have restarted c1su2 model with the connections
of Run Acquire switch to analog filters on
coil drivers. Following steps were taken:
  
  16729   Tue Mar 15 18:42:37 2022 AnchalSummaryBHDPart IX of BHR upgrade - AS1 resuspended and OSEMs tunedhttp://nodus.ligo.caltech.edu:8080/40m/16722

http://nodus.ligo.caltech.edu:8080/40m/16716
  
  16730   Tue Mar 15 18:45:12 2022 AnchalSummaryBHDPart X of BHR upgrade - BHDBS Path setup[Paco, Anchal]

BS Chamber work


ASL
was positioned in nominal place.
PR3
  
  16733   Thu Mar 17 17:23:22 2022 AnchalSummaryBHDPart IIa of BHR upgrade - Green laser alignment[Anchal, Yehonathan] (on Y Arm)

We first checked if the PZT mirrors
M1 and M2 can be controlled. They indeed
  
  16734   Thu Mar 17 19:12:44 2022 AnchalSummaryCDSc1auxey1 slow controls acromag chassis installed, not powered[Anchal, Tega]

We installed c1auxey1 computer
and the acromag chassis in 1Y4. The computer
  
  16737   Fri Mar 18 19:10:51 2022 AnchalSummaryCDSc1auxey1 slow controls issuesI started the modbusIOC service on c1auxey1
and added PD variance channels for UR and
SD as well.  There are unfortunately
  
  16738   Mon Mar 21 14:22:52 2022 AnchalUpdateSUSETMY Alignmnet offsets needed to be changedI'm not sure why but the PIT and YAW
offset values of +2725 and -2341 were not
sufficient for the reflected OPLEV beam to
  
  16740   Mon Mar 21 18:24:07 2022 AnchalSummaryBHDPart IIa of BHR upgrade - Green laser alignment on Yarm[Anchal, Tega]

We did the following alignment
steps on Yarm today:
  
  16741   Mon Mar 21 18:42:06 2022 AnchalSummaryCDSc1auxey1 slow controls issuesAnother issue, Green Y Shutter can not
be controlled with the EPICS controls right
now. This needs to be investigated.
  
  16742   Thu Mar 24 19:20:28 2022 AnchalSummaryBHDPart IIa of BHR upgrade - Green laser alignment on Yarm[Anchal, Paco]


Uneloged: yesterday, Paco
and Ian tried locking the green laser on
  
  16743   Fri Mar 25 11:39:14 2022 AnchalUpdateSUSETMY SUS Electronics Replacement - QuestionsAfter Ian updated the cts2um filters for
OSEM, shouldn't the damping gains be
increased back by factor of 10 to previos
  
  16744   Fri Mar 25 18:20:28 2022 AnchalSummaryBHDPart IIa of BHR upgrade - Green laser alignment on Yarm[Anchal, Paco, Shruti]


Today we found out that
the laser controller at the Yend had it's
  
  16756   Mon Apr 4 17:03:47 2022 AnchalSummaryCDSc1susaux2 slow controls acromag chassis fixed and installed[Anchal, JC, Ian, Paco]

We have now fixed all issues with
the PD mons of c1susaux2 chassis. The slow
 Screenshot_2022-04-04_17-03-26.png 
  16757   Tue Apr 5 18:15:06 2022 AnchalSummaryBHDPart IIa of BHR upgrade - IR laser alignment on Xarm[Paco, Anchal, Ian, JC]

We attempted the alignment of IR
beam into the arm cavities. We used PR2 and
  
  16759   Wed Apr 6 12:03:51 2022 AnchalSummaryBHDPart IIa of BHR upgrade - IR laser alignment on Yarm[Anchal, Paco]

After Koji reduced the output resistors
on PR2/PR3 coil drivers, we got much better
  
  16762   Thu Apr 7 17:59:51 2022 AnchalSummaryBHDPart IIa of BHR upgrade - IR laser alignment on Yarm[Anchal, Paco, JC, Tega]

Today we have aligned the Yarm
cavity for IR, with verified 1.5 roundtrips.
  
  16804   Fri Apr 22 12:09:51 2022 AnchalUpdateCoil DriversPlease update DCC pagesNice. Please put this information on the
DCC pages of the coil driver units. You'll
find links to all the units in this document
  
  16805   Fri Apr 22 12:15:08 2022 AnchalUpdateBHDCable post installationIf someone gets time, let's put in
all the cable posts and clean up our cable
routing on the tables.
  
  16810   Mon Apr 25 16:57:57 2022 AnchalUpdateBHDCable post installation[Anchal, Tega, JC]

We installed cable posts in ITMY,
BS, and ITMX chambers for all the new suspensions.
  
  16811   Mon Apr 25 17:24:06 2022 AnchalUpdateCDSDAQ still downI investigated this issue today. At first,
it seemed that only new suspension testpoints
are inaccessible. I was able to use diaggui
  
  16815   Wed Apr 27 16:28:57 2022 AnchalSummaryBHDBHD Upgrade - Retreiving arm cavity alignment[Anchal, Paco, JC]

We had to open ITMY, ETMY chamber
doors to get the cavity aligned again. Once
  
  16816   Thu Apr 28 09:12:18 2022 AnchalUpdateBHDRestoring arm alignmentThis would be a daily first task in the
morning. We'll need to check the status
of arm alignment and optimize it back to
  
  16817   Thu Apr 28 11:53:10 2022 AnchalSummaryBHDPOP_SM4 and POP_SM5 AssemblyPOP_SM4

I
tried out this stack today and found some
change of plans.
  
  16818   Thu Apr 28 17:45:53 2022 AnchalUpdateBHDPOX Beam issues[Anchal, Paco]

We investigated the low power issue
with POX11 photodiode.
 PXL_20220429_002703686.jpg 
  16819   Thu Apr 28 18:07:04 2022 AnchalUpdateBHDRestoring arm alignment at EODRestored arm algiment to get 0.8 max flashing
on YARM and 1 max flashing on XARM. I had
to move input alignment using TT2-PR3 pair
  
  16824   Mon May 2 17:51:30 2022 AnchalUpdateBHDPOX Beam aligned on RFPD, YARM locked[Paco, Anchal]

We found that one of the Y1-1037-45P
marked mirror that we used was actually curved.
  
  16826   Tue May 3 14:02:09 2022 AnchalSummaryBHDInstalled POP path in ITMX Chamber[Anchal, JC]

I installed POP_SM4 and POP_SM5
in the ITMX chamber in the nominal positions.
  
  16829   Wed May 4 13:09:42 2022 AnchalUpdateBHDIMC table balanced again, IMC is locking, YARM is locking[Paco, JC, Anchal]

We balanced the IMC table back
again to point that got us 50% of nominal
  
  16832   Thu May 5 14:46:22 2022 AnchalUpdateBHDPOP beam height lowered, POP_SM4 raised[Anchal, JC]

We first aligned the single arm
cavity resonance for both arms to get maximum
  
  16835   Fri May 6 13:48:34 2022 AnchalUpdateBHDWFS loop instability fixed[Yuta, Anchal]

We investigated why WFS loop wasn't
working. It seemed like WFS1 PIT error signal
  
  16837   Mon May 9 18:43:03 2022 AnchalUpdateBHDITMX table layout correctedAs I went to correct the ITMX Oplev mirrors,
I found that both mirrors were placed in
very different positions than the design
  
  16849   Thu May 12 20:11:18 2022 AnchalUpdateBHDBHDBS Output beams steered out to ITMY tableI successfully steered out the two output
beams from BHD BS to ITMY table today. This
required significant changes on the table,
 signal-2022-05-12-201844.jpeg 
  16854   Mon May 16 10:49:01 2022 AnchalUpdateDAQDAQ troubleshooting[Anchal, Paco, JC]

Thanks Chris for the fix. We are
able to access the testpoints now but we
  
  16859   Mon May 16 19:14:17 2022 AnchalUpdateBHDCamera set on AS path and BHDBS output path[Anchal, Paco, Yuta]


We aligned AS path avoiding
any clipping to the AP table where we setup
  
  16860   Tue May 17 18:43:38 2022 AnchalUpdateBHDPlaced SRM in ITMY Chamber[Anchal, Paco, Yuta]

SRM Placement


SRM
was moved from its parked location to the
  
  16862   Wed May 18 09:02:52 2022 AnchalUpdateBHDWFS1 PD centeredI centered WFS1 PD so that IMC WFS Servo
does not go out of range.

 
  
  16863   Wed May 18 17:23:15 2022 AnchalUpdateBHDPlaced PRM in BS Chamber[Anchal, Paco, Yuta, JC]

SRM Oplev setup


We
setup SRM oplev path for the aligned position
  
  16866   Thu May 19 19:05:59 2022 AnchalUpdateBHDBS Chamber all work finished, BHD path setup[Anchal, Paco, Yuta]

BS Oplev Path


The
changed position of PRM (40m/16863)
  
  16872   Tue May 24 15:21:13 2022 AnchalUpdateBHDFreeswing tests of new SOS startedI modified the script freeSwing.py
to use damping loop output switches to free
the optic instead of watchdog or coil output
  
  16899   Tue Jun 7 19:40:45 2022 AnchalUpdateSUSITMY changed output matrix to disable use of UL coilSince UL coil actuation is lost, we modified
the output matrix of ITMY to use only UR,
LR and LL face coils for POS, PIT and YAW
 ITMY_PIT_to_POS-PIT-YAW_Coupling.pdfITMY_YAW_to_POS-PIT-YAW_Coupling.pdf 
  16913   Tue Jun 14 18:45:43 2022 AnchalUpdateSUSLO2 lower magnets are stuck in coil, won't come off[Anchal, Yuta]

In the weekend, I ran a free swing
test on all optics. During this test, LO2
  
  16915   Tue Jun 14 20:57:15 2022 AnchalUpdateASCYarm ASS working nowI finally got YARM AS to work today. It
is hard to describe what worked, I did a
lot of monkey business and some dirty offset
  
  16925   Thu Jun 16 18:30:07 2022 AnchalUpdateSUSNew diagonalized input matrices appliedI used the same fre swing data to diagnolize
input matrices of following optics:
MC1, MC2, MC3
 SUSInpMatDiag_MC1_MC2_MC3_BS_IMTX_ETMX_ETMY_AS1_AS4_SR2_PR2_PR3.pdf 
  16931   Tue Jun 21 08:36:50 2022 AnchalUpdateSUSDiagonalized input matrices for LO1, freeSwing on ITMY and ITMXOver the weekend, I ran freeSwing test
with sequential kicks in specific DOFs for
LO1, ITMY, ITMX. LO1 results were successfully
 SUSInpMatDiag_LO1.pdf 
  16938   Wed Jun 22 14:44:03 2022 AnchalUpdateBHDFixed DC error in c1su2, added new library model for suspensionsThe 0x2000 error in c1su2 happens whenever
we make it and install it as the default
data acquisition rates are too much in the
  
  16946   Sat Jun 25 14:29:48 2022 AnchalUpdateIOOWFS issuesThis issue is very weird and still unresolved.
Without WFS loops, we'll have to realign
IMC often and we might loose IMC alignment
  
  16957   Tue Jun 28 17:07:47 2022 AnchalUpdateCalibrationAdded Beatnote channels in demodulation of c1calI added today demodulation of C1:LSC-BEATX/Y_FINE_I/Q
in the c1cal demodulation where different
degrees of freedom can be dithered. For McCal
  
  17010   Mon Jul 18 04:42:54 2022 AnchalUpdateCalibrationError propagation to astrophysical parameters from detector calibration uncertaintyWe can calculate how much detector calibration
uncertainty affects the estimation of astrophysical
parameters using the following method:
 BNSparamsErrorwrtfdError-merged.pdfBBHparamsErrorwrtfdError-merged.pdfBNSparamsEPSwrtCalError.pdfBBHparamsEPSwrtCalError.pdf 
  17016   Mon Jul 18 21:41:42 2022 AnchalSummaryLSCFPMI locking procedure using REFL55 and AS55Now that you have found a working configuration,
I suggest we update CARM and DARM filter
banks so that they are used in locking those
  
  17017   Tue Jul 19 07:34:46 2022 AnchalUpdateCalibrationError propagation to astrophysical parameters from detector calibration uncertaintyAddressing the comments as numbered:


Yeah, that's correct,
that equation normally 
 BNSparamsErrorwrtfdError.pdfBBHparamsErrorwrtfdError.pdfBNSparamsEPSwrtCalError.pdfBBHparamsEPSwrtCalError.pdf 
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