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  17158   Fri Sep 23 19:07:03 2022 TegaUpdateComputersWork to improve stability of 40m models running on teststand [Chris, Tega]

Timing glitch investigation:


Moved dolphin
 dolphin_state_all_green.pngdolphin_state_IPC_glitch.png 
  17157   Fri Sep 23 19:04:12 2022 AnchalUpdateBHDBH55 LSC Model Updates - part IIIBH55

I further
updated LSC model today with following changes:


BH55 whitening switch binary
  
  17156   Fri Sep 23 18:31:46 2022 ranaUpdateBHDBH55 RFPD installed - part IA design flaw in these initial LIGO RFPDs
is that the SMA connector is not strain releieved
by mounting to the case. Since it is only
  
  17155   Fri Sep 23 14:10:19 2022 RadhikaUpdateBHDBH55 RFPD installed - part I[Radhika, Paco, Anchal]

I placed a lens in the B-beam
path to focus the beam spot onto the RFPD
 IMG_3766.jpegIMG_3770.jpegIMG_3773.jpeg 
  17154   Fri Sep 23 10:05:38 2022 JCUpdateVACN2 Interlocks triggered [Chub, Anchal, Tega, JC]

After replacing an empty tank this
morning, I heard a hissing sound coming from
 Screenshot_2022-09-23_10-19-39.pngScreenshot_2022-09-23_10-22-45.png 
  17153   Thu Sep 22 20:57:16 2022 TegaUpdateComputersbuild, install and start 40m models on teststand [Tega, Chris]

We built, installed and started
all the 40m models on the teststand today.
 dolphin_state_plus_c1shimmer.pngFE_status_overview.png 
  17152   Thu Sep 22 19:51:58 2022 AnchalUpdateBHDBH55 LSC Model Updates - part III updated follwoing in teh rtcds models
and medm screens:


c1lsc

Added
  
  17151   Wed Sep 21 17:16:14 2022 TegaUpdateComputersSetup the 6 new front-ends to boot off the FB1 clone[Tega, JC]

We laid 4 out of 6 fiber cables
today. The remaining 2 cables are for the
  
  17150   Wed Sep 21 17:01:59 2022 PacoUpdateBHDBH55 RFPD installed - part I[Radhika, Paco]

Optical path setup

We
realized the DCPD - B beam path was already
 IMG_3760.jpegIMG_3764.jpeg 
  17149   Wed Sep 21 10:10:22 2022 YehonathanUpdateCDSC1SU2 crashed{Yehonathan, Anchal}

Came this morning to find that
all the BHD optics watchdogs tripped. Watchdogs
  
  17148   Tue Sep 20 23:06:23 2022 TegaUpdateComputersSetup the 6 new front-ends to boot off the FB1 clone[Tega, Radhika, JC]

We wired the front-ends for power,
DAQ and martian network connections. Then
 IMG_20220921_084220465.jpgdolphin_err_init_state.pngdolphin_final_state.png 
  17147   Tue Sep 20 18:18:07 2022 AnchalSummarySUSETMX, ETMY damping loop gain tuning[Paco, Anchal]

We performed local damping loop
tuning for ETMs today to ensure all damping
  
  17146   Tue Sep 20 15:40:07 2022 yehonathanUpdateBHDTrying doing AC lockWe resume the LO phase locking work. MICH
was locked with an offset of 80 cts. LO and
AS beams were aligned to maximize the BHD
 Screenshot_2022-09-20_15-38-44.png 
  17145   Tue Sep 20 07:03:04 2022 PacoSummaryGeneralPower Outage 220916 -- restored all[JC, Tega, Paco ]

I would like to mention that during
the Vacuum startup, after the AUX pump was
  
  17144   Mon Sep 19 20:21:06 2022 TegaUpdateComputers1X7 and 1X6 work[Tega, Paco, JC]


We moved the GPS network time server
 IMG_20220919_204013819.jpgIMG_20220919_203541114.jpgIMG_20220919_203458952.jpg 
  17143   Mon Sep 19 17:02:57 2022 PacoSummaryGeneralPower Outage 220916 -- restored allRestore lab

[Paco, Tega, JC,
Yehonathan]

We followed the instructions 
  
  17142   Thu Sep 15 21:12:53 2022 PacoUpdateBHDLO phase "dc" controlLocked the LO phase with a MICH offset=+91.
The LO is midfringe (locked using the A-B
zero crossing), so it's far from being
 lophase_oltf.pdflophase_noise_spectra.pdf 
  17141   Thu Sep 15 16:19:33 2022 YehonathanUpdateLSCPOX-POY noise budgetDoing POX-POY noise measurement as a poor
man's FPMI for diagnostic purposes. (Notebook
in /opt/rtcds/caltech/c1/Git/40m/measurements/LSC/POX-POY/Noise_Budget.ipynb)
 XARM_Actuation_Plot.pdfYARM_Actuation_Plot.pdfSensitivity_Plot_1347315385.pdf 
  17140   Thu Sep 15 11:13:32 2022 AnchalSummaryASSYARM and XARM ASS restoredWith limited proof of working for a few
times (but robustly), I'm happy to report
that ASS on YARM and XARM is working now.
  
  17139   Wed Sep 14 15:40:51 2022 JCUpdateTreasurePlastic ContainersThere are brand new empty plastic containers
located inside the shed that is outside
in the cage. These can be used for organizing
 B0DD2BEC-E57E-4AA2-8672-2ABB41F44F84.jpeg 
  17138   Tue Sep 13 14:12:03 2022 YehonathanUpdateBHDTrying LO phase locking again[Paco, Yehonathan]

Summary: 
We
 Screenshot_2022-09-13_17-41-33.png 
  17137   Thu Sep 8 16:03:25 2022 YehonathanUpdateLSCRealignment, arm locking, gains adjustments{Anchal, Yehonathan}

We came this morning and the IMC
was misaligned. The IMC was realigned and
  
  17136   Thu Sep 8 12:01:02 2022 JCConfigurationLab OrganizationLab OrganizationThe floor cable cover has been changed
out for a new one. This is in Section X11.
 F41AD1DA-29E9-4449-99CB-5F43AE527CA6_1_105_c.jpegFF5F2CE8-85E8-4B6F-8F8A-9045D978F670.jpeg 
  17135   Thu Sep 8 11:54:37 2022 JCConfigurationLab OrganizationLab OrganizationThe arms in the 40m laboratory have now
been sectioned off. Each arm has been divided
up into 15 sections. Along the Y arm, the
 1A7026BC-82A9-49E9-BA22-1A700DFEC5D2.jpeg2A904809-82F0-40C0-B907-B48C3A0E789E.jpegCB4B8591-B769-454D-9A16-EE9176004099.jpeg 
  17134   Wed Sep 7 14:32:15 2022 AnchalUpdateSUSUpdated SD coil gain to keep all coil actuation signals digitally same magnitudeThe coil driver actuation strength for
face coils was increased by 13 times in LO1,
LO2, SR2, AS1, AS4, PR2, and PR3.
  
  17133   Tue Sep 6 17:39:40 2022 PacoUpdateSUSLO1 LO2 AS1 AS4 damping loop step responsesI tuned the local damping gains for LO1,
LO2, AS1, and AS4 by looking at step responses
in the DOF basis (i.e. POS, PIT, YAW, and
 LO1_Step_Response_Test_2022-09-06_17-19.pdfLO2_Step_Response_Test_2022-09-06_17-30.pdfAS1_Step_Response_Test_2022-09-06_17-53.pdfAS4_Step_Response_Test_2022-09-06_18-16.pdf 
  17132   Tue Sep 6 09:57:26 2022 JCSummaryGeneralLab cleaningDB9 Cables have been assorted and placed
behind the Y-Arm. Long BNC Cables and Ethernet
Cables have been stored under the Y-Arm. 
 982146B2-02E5-4C19-B137-E7CC598C262F.jpeg0FBB61AC-E882-458D-A891-7B11F35588FF.jpeg 
  17131   Fri Sep 2 15:40:25 2022 AnchalSummaryALSDFD cable measurements[Anchal, Yehonathan]

I laid down another temporary cable
from Xend to 1Y2 (LSC rack) for also measuring
 ICableOpenEnd_2022-09-02_3_08_34_PM.pngICableShortedEnd_2022-09-02_3_04_43_PM.pngQCableOpenEnd_2022-09-02_3_09_49_PM.pngQCableShortedEnd_2022-09-02_3_00_55_PM.pngDFD_Delay_Measurement.pdf 
  17130   Fri Sep 2 15:35:19 2022 AnchalUpdateGeneralAlong the Y arm part 2[Anchal, Radhika]

The cables in USPS open box were
important cables that are part of the new
  
  17129   Fri Sep 2 15:30:10 2022 AnchalUpdateGeneralAlong the X arm part 1[Anchal, Radhika]

Attachment 2: The custom
cables which were part of the intermediate
  
  17128   Fri Sep 2 15:26:42 2022 YehonathanUpdateGeneralSOS and other stuff in the clean room{Paco, Yehonathan}

BHD Optics box was put into the
x-arm last clean cabinet. (attachment 5)
 osem_sus.jpegmagnet_gluing.jpeg2-3inch_adapter_parts.jpegTTs.jpegBHD_optics.jpeg 
  17127   Fri Sep 2 13:30:25 2022 Ian MacMillanSummaryComputersQuantization Noise Calculation SummaryP.
P. Vaidyanathan wrote a chapter in the
book "Handbook
 averagefiltering.pdfAveragingFilter.py.zip 
  17126   Thu Sep 1 09:00:02 2022 JCConfigurationDaily ProgressLocked both arms and aligned Op LevsEach morning now, I am going to try to
align both arms and lock. Along with that,
sometime at towards the end of each week,
 Daily.pdfDaily.pdf 
  17125   Wed Aug 31 16:11:37 2022 KojiUpdateGeneralVertex Lab area to be cleanedThe analog electronics units piled up along
the wall was moved into 1X3B rack which was
basically empty. (Attachments 1/2/4)
 PXL_20220831_224457839.jpgPXL_20220831_224816960.jpgPXL_20220831_225408183.jpgPXL_20220901_021729652.jpg 
  17123   Wed Aug 31 12:57:07 2022 ranaSummaryALScontrol of ALS beat freq from command line -easyThe PZT sweeps that we've been making
to characterize the ALS-X laser should probably
be discarded - the DFD was not setup correctly
 Untitled.png 
  17122   Wed Aug 31 11:39:48 2022 YehonathanUpdateLSCUpdated XARM noise budget{Radhika, Paco, Yehonathan}

For educational purposes we update
the XARM noise budget and add the POX11 calibrated
 Screenshot_2022-08-31_11-38-46.png 
  17121   Wed Aug 31 01:54:45 2022 KojiUpdateGeneralAlong the Y arm part 2   8x 
  17120   Wed Aug 31 01:53:39 2022 KojiUpdateGeneralAlong the Y arm part 1 

 
 9x 
  17119   Wed Aug 31 01:30:53 2022 KojiUpdateGeneralAlong the X arm part 4Behind the X arm tube  PXL_20220831_020757504.jpgPXL_20220831_020825338.jpgPXL_20220831_020856676.jpgPXL_20220831_020934968.jpgPXL_20220831_021030215.jpg 
  17118   Wed Aug 31 01:25:37 2022 KojiUpdateGeneralAlong the X arm part 3 

 
 9x 
  17117   Wed Aug 31 01:24:48 2022 KojiUpdateGeneralAlong the X arm part 2 

 
 9x 
  17116   Wed Aug 31 01:22:01 2022 KojiUpdateGeneralAlong the X arm part 1 

Attachment 5:
RF delay line was accommodated in 1X3B. (KA)
 9x 
  17115   Wed Aug 31 00:46:56 2022 KojiUpdateGeneralVertex Lab area to be cleanedAs marked up in the photos.

 

Attachment 5: The
 9x 
  17114   Wed Aug 31 00:32:00 2022 KojiUpdateGeneralSOS and other stuff in the clean roomSalvage these (and any other things).
Wrap and double-pack nicely. Put the labels.
Store them and record the location. Tell
 6x 
  17113   Tue Aug 30 15:21:27 2022 TegaUpdateComputers3 FEs from LHO got delivered today[Tega, JC]

We received the remaining 3 front-ends
from LHO today. They each have a timing card
 IMG_20220830_144925325.jpgIMG_20220830_142307495.jpgIMG_20220830_143059443.jpg 
  17112   Mon Aug 29 18:25:12 2022 CiciUpdateGeneralTaking finer measurements of the actuator transfer functionTook finer measurements of the x-arm aux
laser actuator tranfer function (10 kHz -
1 MHz, 1024 pts/decade) using the Moku.
 PZT_TF_fine.pngPZT_TF_fine_mag_stdev.pngATF_fine.zip 
  17111   Mon Aug 29 15:15:46 2022 TegaUpdateComputers3 FEs from LLO got delivered today[JC, Tega]

We got the 3 front-ends from LLO
today. The contents of each box are:
 IMG_20220829_145533452.jpgIMG_20220829_144801365.jpg 
  17110   Mon Aug 29 13:33:09 2022 JCUpdateGeneralLab CleanupThe machine shop looked a mess this morning,
so I cleaned it up. All power tools
are now placed in the drawers in the
 EDE63209-D556-41F1-9BF2-89CD78E3D7B7.jpeg 
  17109   Sun Aug 28 23:14:22 2022 JamieUpdateComputersrack reshuffle proposal for CDS upgrade@tega This looks great, thank you for putting
this together.  The rack drawing in
particular is great.  Two notes:
  
  17108   Fri Aug 26 14:05:09 2022 TegaUpdateComputersrack reshuffle proposal for CDS upgrade[Tega, Jamie]

Here is a proposal for what we
would like to do in terms of reshuffling
 6x 
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