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ID Date Author Type Category Subject Text   13858   Thu May 17 13:51:35 2018 Jon Richardson Configuration Electronics Documentation & Schematics for AUX-PSL PLL [Jon, Gautam] Attached is supporting documentation for the AUX-PSL PLL electronics installed      13863   Fri May 18 14:18:03 2018 gautam Configuration Electronics Basic MEDM Control Screen setup I setup a basic MEDM screen for remote control of the PLL. The Slow control voltage slider      13867   Fri May 18 19:59:55 2018 Jon Richardson Configuration Electronics AUX-PSL PLL Characterization Measurements Below is analysis of measurements I had taken of the AUX-PSL PLL using an SR560 as the servo controller (1 Hz single-pole      13873   Mon May 21 15:34:19 2018 gautam Configuration Electronics Channel hijacking history Since we've been hijacking channels like there is no tomorrow for the AUX-PLL setup, I'm documenting the channel names      13876   Tue May 22 10:14:39 2018 Jon Richardson Configuration Electronics Documentation & Schematics for AUX-PSL PLL        13881   Wed May 23 00:45:18 2018 johannes Configuration General AS port laser injection I was planning to set up the additions to the AS table that are outlined in Attachment #1. Unfortunately the beam is too large for      13886   Thu May 24 13:06:17 2018 gautam Configuration ALS DFD noises Summary: The DFD noise floor is ~0.5Hz/rtHz      13889   Thu May 24 19:41:28 2018 gautam Configuration ALS BeathMouth reinstalled on PSL table Summary: DC light power incident on beat PD is       13890   Thu May 24 20:31:03 2018 gautam Configuration ALS DFD noises A couple of months ago, I took 21 measurements of the delay line transfer function. As shown      13891   Fri May 25 13:06:33 2018 Jon Richardson Configuration Electronics Improved Measurements of AUX-PSL PLL Attached are gain-variation measurements of the final, in situ AUX-to-PSL phase-locked loop (PLL).      13906   Thu May 31 22:59:27 2018 Koji Configuration Computers Shorewall on nodus [Jonathan Koji] Shorewall (http://shorewall.net/), a tool to configure iptables, was installed      14020   Tue Jun 26 17:20:33 2018 Jon Configuration Cameras LLO Python Camera Software is Working Thanks to a discussion yesterday with Joe Betzweiser, I was able to identify and fix the remaining problem with the LLO GigE camera      14026   Wed Jun 27 19:37:16 2018 Koji Configuration Computers New NAT router installed [Larry, Koji] We replaced the NAT router between martian and the campus net. We have the administrative      14033   Fri Jun 29 18:16:32 2018 Jon Configuration PSL Changes to AUX Optical Layout on PSL Table In order to use the 0th-order deflection beam from the AOM for cavity mode scans, I've coaligned this beam to the      14041   Fri Jul 6 12:12:09 2018 Annalisa Configuration Thermal Compensation Thermal compensation setup I tried to put together a rudimentary heater setup.  As a heating element, I used the      14043   Sat Jul 7 19:50:38 2018 Annalisa Configuration Thermal Compensation Study about the Thermal projection setup and its effect on the cavity I made some simulation to study the change that the heater setup can induce on the Radius of Curvature of the ETM.  6x    14050   Tue Jul 10 23:44:23 2018 Annalisa Configuration Thermal Compensation Heater setup assembly [Annalisa, Koji] Today both the heater and the reflector were delivered, and we set down the setup  8x    14062   Fri Jul 13 00:15:13 2018 Annalisa, Terra Configuration AUX Y arm cavity scan [Annalisa, Terra, Koji, Gautam] Summary: We find a configuration for arm scans which      14071   Fri Jul 13 23:39:46 2018 Annalisa Configuration Thermal Compensation Thermal compensation setup - power supply [Annalisa, Rana] In order to power the heater setup to be installed in the ETMY chamber,      14078   Tue Jul 17 17:37:46 2018 Annalisa, Terra Configuration Thermal Compensation Heaters installation Summary We installed two heaters setup on the ETMY bench in order to try inducing some radius of curvature  6x    14091   Fri Jul 20 18:30:47 2018 Jon Configuration AUX Recommend to install AUX PZT driver I recently realized that the PLL is only using about 20% of the available actuation range of the AUX PZT. The +/-10 V control      14104   Wed Jul 25 22:46:15 2018 gautam Configuration Computers NDS access from outside After this work, I've been having some trouble getting data with Python NDS. Eventually, I figured out that the nds connection request      14153   Fri Aug 10 11:29:39 2018 aaron Configuration Upgrade Parts list for BHD I've started putting together a list of things we'll need to buy to do BHD readout. I'm still messing around with      14154   Fri Aug 10 16:43:50 2018 gautam Configuration Upgrade Parts list for BHD Can we use the leakage beam from MMT2 on the OMC table as the LO beam? I can't find the spec for this      14155   Sun Aug 12 10:59:34 2018 aaron Configuration Upgrade Parts list for BHD That seems fine, I wasn't thinking of that beam. in that case could we just have a PBS directly behind MMT2 and send      14158   Mon Aug 13 17:20:07 2018 aaron Configuration Upgrade Parts list for BHD I've attached the diagram of what I mean. There are a couple caveats and      14205   Fri Sep 21 09:59:09 2018 yuki Configuration ASC Y end table upgrade plan [Yuki, Gautam] Attachments #1 is the current setup of AUX Y Green locking and it has      14212   Sun Sep 23 19:32:23 2018 yuki Configuration ASC Y end table upgrade plan [ Yuki, Gautam ] The setup I designed before has abrupt gouy phase shift between two steering      14214   Mon Sep 24 11:09:05 2018 yuki Configuration ASC Y end table upgrade plan [ Yuki, Steve ] With Steve's help, we checked a new lens can be set soon after dichroic      14216   Tue Sep 25 18:08:50 2018 yuki Configuration ASC Y end table upgrade plan [ Yuki, Gautam ] We want to remotely control steeing PZT mirrors so its driver is needed.      14218   Thu Sep 27 14:02:55 2018 yuki Configuration ASC PZT driver board verification [ Yuki, Gautam ] I fixed the input terminal that had been off, and made sure PZT driver      14219   Sun Sep 30 20:14:51 2018 yuki Configuration ASC QPD calibration [ Yuki, Gautam, Steve ] Results: I calibrated a QPD (D1600079, V1009)      14220   Mon Oct 1 12:03:41 2018 not yuki Configuration ASC PZT driver board verification I assume this QPD set is a D1600079/D1600273 combo. How much was the SUM output during      14221   Mon Oct 1 13:33:55 2018 yuki Configuration ASC QPD calibration Quote:      14222   Mon Oct 1 20:39:09 2018 gautam Configuration ASC c1asy We need to set up a copy of the c1asx      14224   Tue Oct 2 18:50:53 2018 yuki Configuration ASC PZT mirror calibration [ Yuki, Gautam ] I calibrated PZT mirrors. The ROUGH result was attached. (Note that some errors and      14226   Wed Oct 3 14:24:40 2018 yuki Configuration ASC Y end table upgrade plan Interim Procedure Report: Purpose The current setup of AUX Y-arm      14227   Wed Oct 3 18:15:34 2018 yuki Configuration ASC AI board improvement [ Yuki, Gautam ] I improved Anti-Imaging board (D000186-Rev.D), which will be put between DAC port and      14228   Thu Oct 4 00:44:50 2018 yuki Configuration ASC AI board improvement [ Yuki, Gautam ] I made a cable which connects DAC port (40 pins) and AI board (25 pins). I      14230   Thu Oct 4 22:15:30 2018 yuki Configuration ASC Y-end table upgrade Before changing setup at Y-end table, I measured the status value of the former setup as follows. These values will be compared      14231   Fri Oct 5 00:46:17 2018 Koji Configuration ASC Y-end table upgrade ??? The SHG crystal has the conversion efficiency of ~2%W (i.e. if you have 1W input      14232   Fri Oct 5 17:32:38 2018 yuki Configuration ASC Y-end table upgrade I measured it with the wrong setting of a powermeter. The correct ones are here: beam power going into doubling      14233   Fri Oct 5 17:47:55 2018 gautam Configuration ASC Y-end table upgrade What about just copying the Xend      14234   Fri Oct 5 22:49:22 2018 yuki Configuration ASC Y-end table upgrade I designed a new layout. It has good mode-matching efficiency, reasonable sensitivity to component positions, good Gouy phase separation. I'm      14235   Sun Oct 7 16:51:03 2018 gautam Configuration LSC Yarm triggering changed To facilitate Yuki's alignment of the EY green beam into the Yarm cavity, I have changed      14236   Sun Oct 7 22:30:42 2018 yuki Configuration LSC Yarm Green locking was recovered I finished installation of optics in the Y-end and recovered green locking. Current ALS-TRY_OUTPUT is about 0.25, which is lower      14237   Mon Oct 8 00:46:35 2018 yuki Configuration ASC Y-end table upgrade Quote:      14238   Mon Oct 8 18:56:52 2018 gautam Configuration ASC c1asx filter coefficient file missing While pointing Yuki to the c1asx servo system, I noticed that the filter file for c1asx is missing in the usual chans      14239   Tue Oct 9 16:05:29 2018 gautam Configuration ASC c1tst deleted, c1asy deployed. Setting up c1asy: Backed up old c1tst.mdl as c1tst_old_bak.mdl in /opt/rtcds/userapps/release/cds/c1/models Copied      14240   Tue Oct 9 23:03:43 2018 yuki Configuration LSC Yarm Green locking was recovered [ Yuki, Gautam, Steve ] To align the green beam in Y-end these hardware were installed:

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