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IDdown Date Author Type Category Subject Text Attachments
  16771   Mon Apr 11 21:44:14 2022 KojiSummaryBHDPart IIa of BHR upgrade - POY11 debuggingWe took out the right most PD interface
board D990543 and removed the 74LS04 chips.
In fact two out of 4 were already replaced
 D990543A1.PDFPXL_20220412_023941730.jpgPXL_20220412_023950567.jpg 
  16770   Mon Apr 11 21:13:21 2022 PacoSummaryBHDPart IIa of BHR upgrade - POY11 debugging[Paco, Koji]

I asked Koji for some advice regarding
closing the loop on YARM using POY11. A few
  
  16769   Mon Apr 11 11:00:30 2022 JancarloUpdateVACC1VAC Reboot and Nitrogen tanks[Paco, JC, Ian, Jordan, Chub]

Checking in the morning, I walked
over to the Nitrogen tanks to check the levels.
  
  16768   Fri Apr 8 17:21:31 2022 Ian MacMillanSummaryBHDPart IIa of BHR upgrade - IR laser alignment on Yarm[Ian, Paco, Tega]

Paco and I opened the ETMY and
ITMY chamber to work on yesterdays efforts
  
  16767   Fri Apr 8 16:03:58 2022 ranaUpdateElectronicsRFSoC 2x2 board -- setup for remote work & BALUN sagaSeems like it should be possible to just
remove the transformer (aka as a BALUN ...
BALanced, UNbalanced), or replace it with
  
  16766   Thu Apr 7 21:15:04 2022 YehonathanUpdateBHDInitial BHD modeling: AS - LO mode matchingOk, it turns out these optics were purchased
on purpose, as this elog
shows. Jon considered building a mode-matching
  
  16765   Thu Apr 7 20:41:15 2022 TommyUpdateElectronicsRFSoC 2x2 Board -- Gain PlotterIn this file (under Tommy), we have a notebook
which runs through a spectrum of frequencies
and determines the gain response of the attached
 Screen_Shot_2022-04-07_at_8.40.23_PM.pngUnknown-3.pngUnknown-4.png 
  16764   Thu Apr 7 20:37:06 2022 TommyUpdateElectronicsRFSoC 2x2 Board -- Simple Tone GeneratorIn the "Tommy" sub folder, I
created a new notebook called "SimpleToneGenerator".
This tunes the DAC and ADC mixers to a single
  
  16763   Thu Apr 7 20:33:42 2022 TommyUpdateElectronicsRFSoC 2x2 board -- setup for remote workTo access the board remotely through the
40m lab ethernet port, use

ssh -N -L localhost:1137:localhost:9090
  
  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.
  
  16761   Thu Apr 7 11:47:22 2022 YehonathanUpdateBHDInitial BHD modeling: AS - LO mode matching

I begin modeling the initial BHD
  
  16760   Wed Apr 6 22:51:47 2022 KojiSummaryBHDPart IIa of BHR upgrade - IR laser alignment on Xarm[Yuta Koji]

We took out the two coil driver
units for PR3 and the incorrect arrangement
 PXL_20220406_213356237.MP.jpgPXL_20220406_212936502.MP.jpg 
  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
  
  16758   Wed Apr 6 01:20:48 2022 KojiSummaryBHDPart IIa of BHR upgrade - IR laser alignment on XarmPR2/PR3 Output R for fame OSEMS reduced
from 1.2K to 1.2K//100Ohm

I
 PXL_20220406_060846581.jpgPXL_20220406_014205726.jpgPXL_20220406_060324812.jpgPXL_20220406_015259326.jpg 
  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
  
  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 
  16755   Mon Apr 4 15:49:06 2022 TegaUpdateOptical LeversSimplified sketch on BS tableI have updated the BS table using feedback
from Koji and Paco and the attached
pdf document is the latest iteration.
 BS_Table.drawio.pdf 
  16754   Sat Apr 2 15:46:13 2022 ranaSummaryPEMParticle counter setup near BS Chambernice - please update the particle counter
page in the 40m wiki. Its probably years
out of date.
  
  16753   Fri Apr 1 22:22:29 2022 KojiUpdateOptical LeversSimplified sketch on MC tablePossibility to swap BS and ITMX
tables:
BS table, which Tega said MC table,
  
  16752   Fri Apr 1 17:02:02 2022 KojiUpdateOptical LeversSimplified sketch on MC tableWe are supposed to have BS Oplev Beams.
We don't like the shallow angle reflections
(i.e. AOI>45deg).
  
  16751   Fri Apr 1 14:26:50 2022 TegaUpdateOptical LeversSimplified sketch on MC tableHere is an early sketch
of the MC table. 

 
 MC_Table.drawio.pdf 
  16750   Fri Apr 1 14:26:19 2022 Ian MacMillanSummaryPEMParticle counter setup near BS ChamberI mounted the particle counter over the
BS chamber attached to the cable tray as
seen in Attachment 1. The signal cable runs
 IMG_1407.jpg 
  16749   Thu Mar 31 18:58:16 2022 Ian MacMillanSummaryBHDPart IIa of BHR upgrade - IR laser alignment on Xarm[Ian, Paco]

We continued to try and lock the
IR laser to the x-arm. Last time we adjusted
  
  16748   Tue Mar 29 17:35:54 2022 PacoUpdateSUSDamping fix on BS, AS4, PR2, and PR3[Ian, Paco]


We removed the "cheby"
filters from AS4, PR2 and PR3 which had been
  
  16747   Tue Mar 29 15:07:11 2022 TegaSummaryVACOpening of MC and ETM chambers[Anchal, Chub, Ian, Paco, Tega]

Today, we opened the MC chamber,
ETMX chamber and ETMY chamber.
  
  16746   Mon Mar 28 16:25:34 2022 Ian MacMillanUpdateSUSETMY SUS Electronics Replacement - QuestionsThe point of changing the gains was to
return the system to its origional state.
ie I wanted the over all gain of the physical
  
  16745   Sat Mar 26 13:04:38 2022 PacoSummaryBHDPart IIa of BHR upgrade - Green laser alignment on YarmI came for a bit to check on the "1Y0
burning smell" reported by Koji last
evening. I agree that there's a toasty
  
  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
  
  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
  
  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
  
  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.
  
  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:
  
  16739   Mon Mar 21 18:00:05 2022 Ian MacMillanUpdateBHDXARM AUX alignment cont.[Ian, Paco]

Continuing with the previous alignment
that we stoped on friday, we re set up my
 PXL_20220322_015247138.jpg 
  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
  
  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
  
  16736   Fri Mar 18 18:39:13 2022 YehonathanSummaryCDSc1auxey1 slow controls acromag chassis installed, powered{Yehonathan, Anchal}

We connected the c1auxey1 chassie
to the different boxes (coil drivers, SAT
  
  16735   Fri Mar 18 17:15:19 2022 PacoUpdateBHDXARM AUX alignment cont.[Paco, Ian]

First, we re-balanced the ITMX
OSEMs so that they would damp at around half-a-shadow.
 Screen_Shot_2022-03-18_at_4.09.38_PM.png 
  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
  
  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
  
  16732   Thu Mar 17 16:50:53 2022 PacoUpdateBHDXARM AUX alignment[Ian, Paco]

We opened the ITMX chamber and


Inspected PR2 and LO1 and
  
  16731   Thu Mar 17 11:40:41 2022 PacoUpdateSUSETMY green PZT HV supply[Anchal, Paco]

We installed a HV kepco power supply
for the green PZT steering the YAUX beam.
  
  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
  
  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
  
  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:
  
  16727   Tue Mar 15 13:49:44 2022 Ian MacMillanBureaucracyTreasureNew Screwdriver BitsI have received the new screwdriver bits
that will work with the two electric screwdrivers
we have. I have distributed them in the 40m.
  
  16726   Tue Mar 15 11:52:34 2022 AnchalSummaryCDSc1su2 model updated for sending Run/Acquire Binary Output to Binary Interface cardI routed the XXX_COIL_DW signals from the
7 SOS blocks in c1su2.mdl (located at /cvs/cds/rtcds/userapps/trunk/sus/c1/models/c1su2.mdl)
to the binary outputs from the FE model.
 c1su2.pdf 
  16725   Tue Mar 15 10:45:31 2022 PacoUpdateGeneralAssembled small in-vac optics[Paco]

This morning I assembled LO3,
LO4 and AS3 (all
  
  16724   Mon Mar 14 12:20:05 2022 AnchalSummaryCDSc1susaux2 slow controls acromag chassis installed[Anchal, Yehonathan, Ian]

We installed c1susaux2 acromag
chassis in 1Y0 with c1susaux2 computer. We
 BHD_WatchDogs.png40mBHD_C1SUSAUX2_Acromag_Chassis.pdf 
  16723   Fri Mar 11 16:43:03 2022 Ian MacMillanUpdateSUSETMY SUS Electronics ReplacementI updated the gain of the ct2um filter
on the OSEMS for ETMY and decreased their
gain by a factor of 9 from 0.36 to 0.04.
  
  16722   Thu Mar 10 10:05:49 2022 PacoUpdateSUSAS1 free swing test[Paco, Ian]


Begin free swinging test
for AS1 at 10:05 AM, set for ~ 2.04 hours.

Test
 SUS_Input_Matrix_Diagonalization.pdf 
ELOG V3.1.3-