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ID Date Author Type Category Subject Text   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      14501   Fri Mar 29 15:47:58 2019 gautam Update AUX AUX laser fiber moved from AS table to PSL table [anjali, gautam] To facilitate the 1um MZ frequency stabilization project, I decided that the      14504   Sun Mar 31 18:39:45 2019 Anjali Update AUX AUX laser fiber moved from AS table to PSL table Attachment #1 shows the schematic of the experimental setup for the frequency noise measurement of 1 um laser source.      16194   Wed Jun 9 11:46:01 2021 Anchal, Paco Summary AUX Xend Green Laser PDH OLTF measurement We measured the Xend green laser PDH Open loop transfer function by following method: We first measured the feedback      16197   Thu Jun 10 14:01:36 2021 Anchal Summary AUX Xend Green Laser PDH OLTF measurement loop algebra Attachment 1 shows the closed loop of Xend Green laser Arm PDH lock loop. Free running laser noise gets injected at laser head after      16200   Mon Jun 14 18:57:49 2021 Anchal Update AUX Xend is unbearably hot. Green laser is loosing lock in 10's of seconds Working in Xend with mask on has become unbearable. It is very hot there and I would really like if we fix this issue.      16202   Tue Jun 15 15:26:43 2021 Anchal, Paco Summary AUX Xend Green Laser PDH OLTF measurement loop algebra, excitation at control point Attachment 1 shows the case when excitation is sent at control point i.e. the PZT output. As before, free running laser noise       16213   Fri Jun 18 10:07:23 2021 Anchal, Paco Summary AUX Xend Green Laser PDH OLTF with coherence We did the measurement of OLTF for Xend green laser PDH loop with excitation added at control point using a SR560 as shown in      17243   Tue Nov 8 11:18:39 2022 Radhika Update AUX AUX PZT transfer function fitting + filtering Here I describe efforts to cancel the AUX laser PZT mechanical resonances from ~200 kHz-400kHz. While these may not be the resonances      17244   Tue Nov 8 16:56:33 2022 rana Update AUX AUX PZT transfer function fitting + filtering This looks really good to me. Rather than fully invert the plant, what we would like to do is now design a filter which allow      17759   Mon Aug 7 14:02:52 2023 Radhika Update AUX xend AUX fully locking with Moku:Go Moku:Go used for full locking of green laser - OLTF to come Picking up from      17773   Thu Aug 10 14:35:13 2023 Radhika Update AUX XAUX out of loop error [Radhika, Yuta, Hiroki, Paco] During YAUX noise measurements, we also locked IR and green lasers in xarm      1984   Fri Sep 11 17:07:45 2009 Jenne Update Adaptive Filtering Minor changes to ASS_TOP_PEM screen. There was some uncertainty as to which channels were being input into the Adaptive Filtering screen, so I checked it out to      1988   Wed Sep 16 11:58:11 2009 Jenne Update Adaptive Filtering New Filters for Adaptive Filtering When Sanjit and I were looking at the adaptive filtering system on Monday and Friday, we noticed that turning on the Accelerometers      2001   Fri Sep 25 16:10:17 2009 Jenne Update Adaptive Filtering Some progress on OAF, but more still to be done [Jenne, Sanjit] It seems now that we are able to get the OAF system to do a pretty good job      2004   Fri Sep 25 19:55:59 2009 Jenne Update Adaptive Filtering Subtraction of the microseism using Adaptive Filtering! [Rana, Jenne] The OAF system did something useful today!  Attached is a plot.  Black      2029   Wed Sep 30 17:49:21 2009 Jenne Update Adaptive Filtering New UP/DOWN scripts for OAF [Sanjit, Jenne] The up and down scripts accessible from the OAF (still C1:ASS-TOP) screen are      2054   Mon Oct 5 18:34:26 2009 Jenne Update Adaptive Filtering Attempts to take a TF of the OAF system [Jenne, Sanjit] As per Matt's instructions in his OAF document (elog      2058   Tue Oct 6 11:13:53 2009 Jenne Update Adaptive Filtering Attempts to take a TF of the OAF system                    2061   Wed Oct 7 03:49:49 2009 rana Update Adaptive Filtering Attempts to take a TF of the OAF system  Here's a plot of the spectra of the seismometers and MCL. The coherence shows which axes are aligned right now: MC1_X is      2063   Wed Oct 7 07:42:55 2009 rana Update Adaptive Filtering Attempts to take a TF of the OAF system I remeasured the OAF time delay using the OAF-TF template      2065   Wed Oct 7 19:23:49 2009 Jenne Update Adaptive Filtering (Final?) PEM cabling changes                    2066   Wed Oct 7 20:32:21 2009 rana Update Adaptive Filtering extra delay and noise in PEM -> ASS/OAF system [Rana, Jenne] There is some craziness going on with the delay in the PEM path for the OAF.       2074   Fri Oct 9 03:53:56 2009 Jenne Update Adaptive Filtering Remaking the ASS The c1ass computer, which is now used for the OAF system, has many remnants from the days when it was actually used as an ASS.       2116   Mon Oct 19 11:31:55 2009 Jenne Update Adaptive Filtering extra delay and noise in PEM -> ASS/OAF system                    2121   Mon Oct 19 19:37:39 2009 Sanjit, Jenne Update Adaptive Filtering extra delay and noise in PEM -> ASS/OAF system Rana pointed out that the delay may be caused by the 110B DAQ, as it integrates over 2ms (5 clock cycles at 2048Hz on the      2125   Tue Oct 20 11:38:10 2009 rana, rolf Update Adaptive Filtering extra delay and noise in PEM -> ASS/OAF system An email from Rolf about the delay in the 110Bs:       2143   Mon Oct 26 17:45:34 2009 Jenne Update Adaptive Filtering New changes to the OAF fe code [Alex, Jenne, Sanjit] Alex came to the 40m today, and did several awesome things in OAF-land.      2159   Thu Oct 29 18:04:02 2009 Jenne Update Adaptive Filtering More work on saving coeffs on the OAF screen [Sanjit,Jenne] Sanjit has been working today on trying to get the OAF coefficients to save      2160   Thu Oct 29 18:25:33 2009 Sanjit Update Adaptive Filtering More work on saving coeffs on the OAF screen                    2171   Mon Nov 2 21:09:15 2009 Sanjit Update Adaptive Filtering More work on saving coeffs on the OAF screen   I made some changes in the code (all commented in the installed and SVN version)      2199   Fri Nov 6 19:25:31 2009 Sanjit, Jenne, Joe Update Adaptive Filtering More work on saving coeffs on the OAF screen           2232   Wed Nov 11 00:55:47 2009 Jenne Update Adaptive Filtering Terms put on some ADC inputs Mostly a note to self:  I have put terminators on the ADC inputs which are usually the PEM-SEIS-GUR2_(XYZ) channels.  Since      2310   Fri Nov 20 17:44:38 2009 Jenne Update Adaptive Filtering Some svn shenanigans [Sanjit, Jenne] Sanjit and I are trying to put names to some signals which exist in SimuLink land,      2316   Mon Nov 23 19:36:28 2009 Jenne Update Adaptive Filtering How to add ASS channels, so that they're saved to frames [Jenne, Sanjit] We would like several channels from the OAF/ASS screen to be saved to frames,      2323   Tue Nov 24 18:24:54 2009 Sanjit Configuration Adaptive Filtering ASS channels added to framebuilder   [Sanjit, Jenne, Rob, Joe]        2447   Tue Dec 22 18:42:40 2009 Sanjit, Koji Configuration Adaptive Filtering Readded DAQ channels to active list Sometimes back we modified /cvs/cds/caltech/chans/daq/C1ASS.ini to save some of the channels. The file was reverted to default after the recent changes      2516   Fri Jan 15 12:04:26 2010 Sanjit, mevans Update Adaptive Filtering Canceling noise again!   OAF is successfully canceling noise again, thanks to Matt!      2548   Tue Jan 26 19:51:44 2010 Sanjit, rana Update Adaptive Filtering OAF details We turned on the OAF again to make sure it works. We got it to work well with the Ranger as well as the Guralp channels. The      2555   Mon Feb 1 18:31:00 2010 Sanjit Update Adaptive Filtering OAF details   I tried downsampling value 32 (instead of 16), to see if it has any effect on OAF. Last week I encountered some      2557   Mon Feb 1 21:51:12 2010 Sanjit Update Adaptive Filtering OAF details  I tried some combination of PEM channels and filters to improve OAF performance at other frequencies, where we do not have      2571   Fri Feb 5 00:52:55 2010 Sanjit Update Adaptive Filtering OAF at 0.1-1.0 Hz   At 0.1-1.0Hz, there is some coherence between MC_L and RANGER_Y & GUR_Y, see      2572   Fri Feb 5 01:04:58 2010 Sanjit Update Adaptive Filtering OAF at > 5Hz   There is lot of coherence between the error signal and PEM channels at 5-100Hz.      2575   Sat Feb 6 00:10:08 2010 Sanjit Update Adaptive Filtering OAF at > 5Hz   Did some more test to get better performance at higher frequencies.      4854   Wed Jun 22 12:29:57 2011 Ishwita Summary Adaptive Filtering Weekly summary I started on the 16th with a very intense lab tour & was fed with a large amount of data (I can't guarantee that I remember      5402   Wed Sep 14 01:21:17 2011 Jenne Update Adaptive Filtering Modifications to LSC, RFM models, added OAF model [Jenne, Mirko, with supervision from Jamie] We are starting to create the new OAF model, so that it works with the new      5404   Wed Sep 14 12:01:05 2011 rana Update Adaptive Filtering Modifications to LSC, RFM models, added OAF model For the acquisition of the MC_F channel, I suggest taking the FAST_MON BNC output from the blue FSS interface card in the Eurocard      5449   Sun Sep 18 15:34:09 2011 Koji Update Adaptive Filtering Modifications to LSC, RFM models, added OAF model [Koji Kiwamu] This modification of the LSC model made the rows      5550   Mon Sep 26 18:59:11 2011 Jenne Update Adaptive Filtering Plan for making MC_F                                5555   Tue Sep 27 09:47:52 2011 Suresh Update Adaptive Filtering Plan for making MC_F

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