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New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Type Category Subject Text Attachments
  16780   Thu Apr 14 18:34:51 2022 PacoSummaryBHDITMY Oplev reinstalled (Re: 2 in oplev mirrors incompatible with LMR2V)[Paco, Yehonathan]

We installed ITMYOL1 and ITMYOL2
on the ITMY chamber. We aligned the ITMY
  
  16779   Thu Apr 14 11:52:57 2022 yehonathanSummaryBHDPart IIa of BHR upgrade - POY11 debugging{JC, Paco, Yehonathan, Ian}

POY lens was moved to infront of
the POY steering mirror to make the POU beam
 Screenshot_2022-04-14_15-53-39.pngPXL_20220414_220616875.jpg 
  16778   Thu Apr 14 10:18:35 2022 PacoSummaryBHD2 in oplev mirrors incompatible with LMR2V[Paco, JC]

We realized the 2 in oplev mirrors
(Thorlabs BB2-E02) for ITMYOL, SRMOL, and
  
  16777   Thu Apr 14 09:04:30 2022 JordanUpdateVACRGA Volume RGA ScansPrior to venting the RGA volume on Tuesday
(4/12/2022) I took an RGA scan of the volume
to be vented (RGA+TP1 volume+Manual Gate
 40mRGA_Overlay.pdfRGAVolume_4_12_22.PNG 
  16776   Wed Apr 13 18:55:54 2022 KojiUpdateCamerasCamera Battery TestI believe that the Nikon has an exposure
problem and that's why we bought the
Canon.
  
  16775   Wed Apr 13 16:23:54 2022 Ian MacMillanUpdateGeneralSmell in 40m[Ian, Paco, JC]

There is a strange smell in the
40m. It smells like a chemically burning
  
  16774   Wed Apr 13 15:57:25 2022 Ian MacMillanUpdateCamerasCamera Battery TestTested the Nikon batteries for the camera.
they are supposed to be 7V batteries but
they don't hold a charge. I confirmed
  
  16773   Wed Apr 13 12:50:07 2022 TegaUpdateVACNew Pressure Gauge Install/Pump Spool Vent[Jordan, JC, Tega]

We have installed all the FRGs
and updated the VAC medm screens to display
 VAC_FRG_UPGRADE.png 
  16772   Tue Apr 12 09:05:21 2022 JordanUpdateVACNew Pressure Gauge Install/Pump Spool VentToday, Tega and I would like to vent the
pump spool an dinstall the new FRG-400 Agilent
Pressure Gauges (per elog 15703). The attached
 6x 
  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.
  
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