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ID Date Author Type Category Subject Text   2824   Wed Apr 21 11:32:31 2010 josephb Update CDS 40m CDS hardware update and software requests This is mostly a reminder to myself about what I discussed with Jay and Alex this morning. The big black IO chassis are "almost"      13560   Fri Jan 19 15:22:19 2018 Udit Khandelwal Summary General 40m CAD update 2018/01/19 40m CAD Project All parts will be now named according to the numbering system in this      6720   Wed May 30 22:04:13 2012 Jenne Bureaucracy General 40m Action Items .....including: fix Q of Vio2 filter in SUS. - JENNE Switch power source for beatnote      6843   Thu Jun 21 02:57:16 2012 Jenne Bureaucracy General 40m Action Items PRIORITY ITEMS:      15456   Mon Jul 6 15:10:40 2020 Jon Summary BHD 40m --> A+ BHD design analysis As suggested last week, Hang and I have reviewed the A+ BHD status (DRD, CDD, and reviewers' comments) and      8540   Tue May 7 17:43:51 2013 Jamie Update Computers 40MARS wireless network problems I'm not sure what's going on today but we're seeing ~80% packet loss on the 40MARS wireless network.  This is obviously      8541   Tue May 7 18:16:37 2013 Jamie Update Computers 40MARS wireless network problems Here's an example of the total horribleness of what's happening right now: controls@rossa:~ 0$ ping 192.168.113.222 PING      8762   Thu Jun 27 05:44:51 2013 rana Update   40MARS wireless network problems                                8763   Thu Jun 27 10:45:41 2013 Steve Update General 40MARS wireless network problems                                8605   Tue May 21 16:23:06 2013 Manasa Update General 40MARS wireless network problem RETURNS                                8782   Fri Jun 28 11:33:32 2013 Steve Update   40MARS wireless network problem                                3081   Wed Jun 16 18:12:16 2010 nancy Configuration Computers 40MARS i added my laptop's mac address to teh martian at port 13 today.        3083   Wed Jun 16 18:44:07 2010 Alberto Configuration Computers 40MARS                                7445   Thu Sep 27 13:05:55 2012 Eric Gustafson Update LSC 40 meter photodiode frequency response measurement system installation Jenne, Mike and      7448   Thu Sep 27 17:00:41 2012 Eric Gustafson Update LSC 40 meter photodiode frequency response measurement system installation Mike and I installed all of the telescopes and launching hardware for REFL11, REFL33, REFL55, AS55, MCRef, POX11 and POP55. On      16261   Tue Jul 27 23:04:37 2021 Anchal Update LSC 40 meter party [ian, anchal, paco] After our second attempt of locking PRFPMI tonight, we tried to resotre XARM      1717   Tue Jul 7 15:08:49 2009 Koji Summary Photos 40 high school students visited 40M Alan and Alberto conducted a tour of 40 high-school students. It may be the same tour that Rana      2283   Tue Nov 17 15:54:34 2009 rana Summary PEM 40 days of weather the inside temperature is alarming at the red level today - should check if the HIHI value is set correctly      268   Fri Jan 25 15:53:59 2008 Alberto Update Electronics 40 dB from the 3rd order Chebyschev I managed to tune the 7 knobs in the 3rd order Chebyshev bandpass filter obtaining the tranfer function attached to this entry. We have      1420   Tue Mar 24 09:04:02 2009 steve Update SUS 4.8 mag earthquake SRM, ITMX, ETMX, ITMY and ETMY lost damping at 4:55am this morning from 4.8 magnitude earthquake.      13829   Thu May 10 08:45:16 2018 Steve Update General 4.5M eq. Cabazon, CA 20180508 4:49am Cabazon earth quake 4.5M at 79 miles away.  ETMX is in load cell measurment condition.      11914   Wed Jan 6 08:09:04 2016 Steve Update PEM 4.5 Mag Banning EQ IFO restored after 4.5 Mag Banning, Ca earthquake.      9737   Tue Mar 18 08:31:37 2014 Steve Update SUS 4.4M local earthquake & its miracle                                9729   Mon Mar 17 09:27:05 2014 Steve Update SUS 4.4M local earthquake  It looks like that ETMX have  2 sticky magnets.        9734   Mon Mar 17 20:44:42 2014 rana Update SUS 4.4M local earthquake        9735   Mon Mar 17 21:55:36 2014 Koji Update SUS 4.4M local earthquake It was little bit surprising to me but Rana's professorial rock'n roll excitation released      9736   Tue Mar 18 00:51:02 2014 Jenne Update SUS 4.4M local earthquake    I am really, really happy to hear that it was just a sticking situation.       11904   Wed Dec 30 11:09:52 2015 Steve Update SUS 4.4M EQ Suspensions recovered after 4.4 Mag EQ        9559   Thu Jan 16 08:19:29 2014 Steve Update PEM 4.4 and 3.8M local earth quakes                                9556   Wed Jan 15 13:05:30 2014 Jenne Update PEM 4.4 EQ in Fontana, CA It looks like there was a 4.4 magnitude earthquake near Fontana, CA around 1:30am today.  This tripped all of the suspension      11903   Mon Dec 28 14:12:23 2015 Steve Update SUS 4.2M EQ Suspensions are recovered after 4.2 Mag earth quake. No obvoius sign of damage.        12995   Wed May 17 08:19:59 2017 Steve Update SUS 4.1M earthquake Sus dampings recovered. ETMY oplev needs to be recentered.      11158   Mon Mar 23 09:42:29 2015 Steve Summary IOO 4" PSL beam path posts To achive the same beam height each components needs their specific post height.      8473   Mon Apr 22 19:48:56 2013 Jenne Update 40m Upgrading 4 pins enough? Are 4 of these spring loaded pins enough?  I'm not sure how one pin can hold 2 lids at each point.  It seems like we need      8475   Tue Apr 23 15:00:20 2013 Jenne Update 40m Upgrading 4 pins enough?                                9576   Mon Jan 27 09:08:00 2014 Steve Update VAC 4 days at atmosphere          6929   Fri Jul 6 09:27:40 2012 steve Update VAC 4 days at atm  I'm looking for some movement indicators of the vent-pump down events.        11005   Wed Feb 11 18:11:46 2015 Koji Summary LSC 3f modulation cancellation 33MHz sidebands can be elliminated by careful choice of the modulation depths and the relative phase between the modulation signals.      11019   Thu Feb 12 23:47:45 2015 Koji Update LSC 3f modulation cancellation - I built another beat setup on the PSL table at the South East side of the table. - The main beam is not touched, no      11028   Sat Feb 14 00:48:13 2015 Koji Update LSC 3f modulation cancellation [SUCCESS] The 3f sideband cancellation seemed worked nicely.      11029   Sat Feb 14 19:54:04 2015 Koji Summary LSC 3f modulation cancellation Optical Setup [Attachment 1]      11031   Sat Feb 14 20:37:51 2015 Koji Summary LSC 3f modulation cancellation Experimental results - PD response [Attachment      1354   Wed Mar 4 12:38:07 2009 Alberto Update Computer Scripts / Programs 3f locking simulations I simulated the REFL signals demodulated at the differential frequencies of the sidebands (f2-f1), at their summed frequencies (f2+f1).      5377   Sat Sep 10 14:55:28 2011 Keiko Update LSC 3f demodulation board check  To check the demodulation boards for REFL33 and REFL165, a long cable from ETMY (SUS-ETMY-SDCOIL-EXT      5378   Sat Sep 10 16:10:42 2011 Keiko Update LSC 3f demodulation board check There is a LP filter just after the RF input of an demodulation board (its schematic can be found as D990511-00-C on DCC). I have      5380   Sat Sep 10 18:57:52 2011 Keiko Update LSC 3f demodulation board check The phase delay due to the RF input filter on the demodulation board will not bother the      5385   Sun Sep 11 22:36:32 2011 Keiko Update LSC 3f demodulation board check Filters at the RF inputs of REFL33 and REFL165 demodulation boards were measured again. The filters will      5386   Mon Sep 12 13:24:07 2011 Keiko Update LSC 3f demodulation board check I also quickly checked the orthogonality of the demodulation board for REFL33 and REFL165 using function generators      5387   Mon Sep 12 16:27:01 2011 Keiko Update LSC 3f demodulation board check Wait. I am checking the whitening filters of the 33 and 165 demodulation boards. Also,       5388   Mon Sep 12 18:40:35 2011 Keiko Update LSC 3f demodulation board check LSC-REFL33-I-IN1(IN2, OUT) and

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