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ID Date Author Type Category Subject Text   9262   Wed Oct 23 09:17:33 2013 Steve Update SUS ETMY sensors compared to ETMX  ETMY sensors are glitching or getting kicked up. Atm3, There is no seismic activity      9261   Wed Oct 23 00:13:30 2013 Masayuki Update Green Locking FPMI with ALS arm stabilization Summary In 2arms + MICH configuration, residual      9260   Wed Oct 23 00:05:17 2013 manasa Update SUS Unstable Y arm ALS points to problems with ETMY suspension [Masayuki, Manasa] Looking into control signals and error      9259   Tue Oct 22 18:55:55 2013 rana Update CDS Workstation swap: Rosalba to ??? We got a new computer from Xi computer corp. I am currently installing Ubuntu 10.04 LTS on to it to start with and then will      9258   Tue Oct 22 11:58:16 2013 Masayuki Update Green Locking Yarm ALS PDH [Manasa, Masayuki] Purpose As this      9257   Tue Oct 22 10:12:33 2013 Steve Update PEM south arm AC intake duct checked   The 4th week of no wet mopping of the floor  and no wet wiping  the vacuum envelope.      9256   Mon Oct 21 13:15:52 2013 Koji Update IOO PMC aligned PMC aligned. Trans 0.78 -> 0.83      9255   Mon Oct 21 09:46:12 2013 Steve Update PSL Laser just turned on I have just turned on the PSL Innolight laser. The laser shut down  with unknown reason a day ago.      9254   Fri Oct 18 15:18:49 2013 Steve Update PEM particle count peak or ... Sunday evening fireworks. Manasa heard it.      9253   Fri Oct 18 08:12:08 2013 Steve Update PEM 1000 days trends        9252   Thu Oct 17 22:38:25 2013 Masayuki Update PSL PSL temperature changed [Manasa, Masayuki] PSL temperature changed      9251   Thu Oct 17 18:29:28 2013 Koji Update LSC PRMI+2arm attempt (not really yet) While Manasa, Jenne, and Masayuki are working on the preparing the interferometer, I write the elog for them.      9250   Thu Oct 17 13:40:55 2013 Jenne Update LSC New lockin / sensing matrix frequencies I locked PRMI, and (after fixing the POP QPD situation, noted in elog 9249) took power spectra of all the REFL      9249   Thu Oct 17 13:26:13 2013 Jenne Update ASC POP QPD realigned I locked the PRMI, and tried to turn on the ASS, but this caused PRMI to lose lock.  Since this is similar to what happened      9248   Wed Oct 16 19:19:14 2013 Masayuki Update Green Locking End PDH 60 Hz comb noise in YARM [Manasa, Masayuki] - Motivation      9247   Wed Oct 16 17:34:28 2013 Jenne Update LSC PRMI + 2 arm attempt Koji reminded me that we should also save the data from the PRMI+Xarm, just in case we want to look at it later.      9246   Wed Oct 16 10:32:40 2013 Steve Update SUS Flowbench effect on oplev error signals  ETMX _OPLEV_...ERROR signals are effected by turning ON the        9245   Wed Oct 16 03:04:37 2013 Jenne Update LSC New lockin / sensing matrix model parts                                9244   Wed Oct 16 02:39:24 2013 rana Update LSC PRMI + 2 arm attempt    that's some hot stuff      9243   Wed Oct 16 02:27:56 2013 Jenne Update LSC PRMI + 2 arm attempt [Masayuki, Jenne]   Masayuki  informed me that the Xarm ALS was feeling pretty good      9242   Wed Oct 16 02:08:05 2013 Masayuki Update Green Locking Script for scan cavity. I wrote the script to scan the cavity using ALS until it finds IR resonance . This script is       9241   Tue Oct 15 15:25:13 2013 Steve Update SUS Oplev power spectrums bandwidths   Atm1 bandwidth 0.01 Hz ETMY plot is different from      9240   Tue Oct 15 01:39:07 2013 Masayuki Update Green Locking Y-arm ALS    - Motivation      9239   Mon Oct 14 21:12:35 2013 Jenne Update LSC New lockin / sensing matrix screens After staring and thinking, I remembered that there is a limit to the number of characters that a channel name can have.  So, I      9238   Mon Oct 14 17:51:40 2013 Jenne Update IOO input beam to PMC drifted again                                9237   Mon Oct 14 17:40:15 2013 Jenne Update LSC New lockin / sensing matrix screens  Hmmmm, yup.  I forgot to pay attention to what the UGFs of our LSC loops are when I was picking a low-noise region.       9236   Sun Oct 13 13:29:09 2013 rana Update LSC New lockin / sensing matrix screens   I think that we always drive above the UGF for sensing matrix measurements since we like to put notches in the servo.      9235   Fri Oct 11 20:30:08 2013 Masayuki Update SUS Centering of Oplev of ETMY I centered the oplev of the ETMY, because I found that Yarm lost lock every 10 minutes, and the ETMY oplev was misaligned very much.      9234   Fri Oct 11 17:37:08 2013 Jenne Update LSC New lockin / sensing matrix screens                                9233   Fri Oct 11 00:37:23 2013 manasa Update Green Locking X arm green locking modes [Masayuki, Manasa] We have stabilized the ALS for Y arm and concluded that although the PDH servo      9232   Fri Oct 11 00:37:21 2013 Masayuki Update Green Locking Y-arm ALS [Manasa, Masayuki] - Motivation      9231   Thu Oct 10 11:46:43 2013 Jenne Update SUS ITMY OpLev Noise For my work designing a cost function, so that I can try out new feedback servo designs on the oplevs, I wanted to know what      9230   Thu Oct 10 11:30:15 2013 Steve Update SUS Oplev power spectrums: PIT-YAW   Power spetrum of ETMX and ETMY in the view of oplev  pitch and yaw.      9229   Thu Oct 10 08:25:07 2013 Steve Update safety Chris received safety training Chris Couste, our new undergrad help received 40m specific, basic safety training yesterday.      9228   Wed Oct 9 22:58:34 2013 Manasa Update Green Locking ALS stabilization After Jenne and Masayuki told that they were not able to stabilize the ALS for either arms yesterday, I looked into things with      9227   Wed Oct 9 22:05:55 2013 Jenne Update LSC New lockin / sensing matrix screens After finishing up working on the models for today, I made corresponding screens.        9226   Wed Oct 9 18:45:17 2013 Masayuki Update Green Locking ALS down script modified                                9225   Wed Oct 9 17:27:35 2013 Jenne Update LSC LSC model sensing matrix upgrades The modifications to the LSC model are now complete, and the new model has been compiled, installed, and is running. The      9224   Wed Oct 9 15:00:48 2013 Steve Update PEM freshmen tour  [Alan, Koji, Manasa] Record number of 50 freshmen were given tour of the 40m this afternoon.      9223   Wed Oct 9 11:48:10 2013 Steve Update VAC RGA scan at day 65    Valve configuration: Vacuum Normal      9222   Tue Oct 8 16:56:38 2013 Jenne Update LSC LSC model sensing matrix upgrades in progress I have modified the LSC model (the currently-running model is checked into the svn), but it is not compiling for me.       9221   Tue Oct 8 11:29:30 2013 Steve Update PEM no Janitor day today This was the second week without wet mopping the floor and wet wipe down of the vacuum envelope.      9220   Tue Oct 8 08:58:16 2013 Steve Update SUS Oplev power spectrums                                9219   Tue Oct 8 00:21:01 2013 manasa HowTo Green Locking ALS arm stabilization Step by step procedure for stabilizing arms using ALS servo      9218   Mon Oct 7 18:39:29 2013 Jenne Summary LSC PRMI: REFL11 beam realigned                                9217   Mon Oct 7 18:36:39 2013 Jenne Update LSC Sensing Matrix scripts updated I discovered that I was not getting enough SNR on all the refl RFPDs when I actuated using the Sensing Matrix script.  The      9216   Mon Oct 7 18:32:01 2013 John Zweizig Summary Computer Scripts / Programs nds2 installed, restarted The upgrade of megatron broke the nds2 service. I have fixed things by   1) installing the latest version      9215   Mon Oct 7 14:24:10 2013 Jenne Update LSC PRMI Config settings re-saved I have resaved the PRMI locking settings in the IFO Config screen.  Nothing has changed, except that I have put a 1e-4 into      9214   Mon Oct 7 14:15:10 2013 Jenne Update LSC PRMI alignment is also excellent Something is really excellent with the alignment today, or something has changed with the POP path / electronics.  While      9213   Mon Oct 7 13:55:26 2013 Jenne Update LSC Arms locked in IR for many hours Someone left the arms aligned, and the LSC engaged, so the arms have been locked almost continuously for several days

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