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ID Date Author Type Category Subject Text   634   Thu Jul 3 18:48:09 2008 Alberto Update General Beats of the two lasers in the absolute length measurement observed I adjusted the alignment of the flipper mirror as suggested by Koji making the two beam spots match. I also aligned all the IFO mirrors      635   Thu Jul 3 22:54:45 2008 Koji Update General Beats of the two lasers in the absolute length measurement observed Great! Conguraturation! I wish if I could see it! It's nice if you can put the photo or anything of the RF spectrum analyzer.      637   Mon Jul 7 11:22:02 2008 Alberto Update General Beats of the two lasers in the absolute length measurement observed I didn't post a screenshot from the RF SA because I had troubles with the interface with the computer (unfortunately the network      638   Mon Jul 7 13:06:38 2008 Koji Update General Beats of the two lasers in the absolute length measurement observed One may need an RF filter after the mixer. I expect the SR560 does work for this purpose. If it does not, a passive LPF can be used.      643   Mon Jul 7 19:15:38 2008 Alberto Update General Optics alignement on the ABS length experiment Today I started setting up the PLL instruments to lock the frequency of the NPRO beam to the IFO beam. with no need of a new alignment      650   Tue Jul 8 21:58:22 2008 alberto Update General Secondaty beam aligned to the IFO beam again Yesterday the alignment of the secondary beam to the IFO was completely lost and today I had to realign all the optics before I      653   Wed Jul 9 17:58:19 2008 John Summary General Illuminator alarms This morning some time was wasted on alignment due to the illuminators.      656   Thu Jul 10 19:12:07 2008 Alberto Update General abs cavity length measurement experiment Yesterday morning, when I started, I found the IFO beam on a different position and the beam spot at the AS port looked very      664   Sun Jul 13 22:39:16 2008 John Summary General Edited medm screens I've edited the FSS and PMC screens so that red boxes are shown around the appropriate slider if a gain or offset is not within      668   Mon Jul 14 19:15:43 2008 Alberto Update General abs cavity length measurement experiment Lately I've been dealing with the alignment of the interferometer to have a good beam spot at the AS port. Today the alignment      669   Mon Jul 14 21:34:10 2008 Alberto Update General abs cavity length measurement experiment [quote]Lately I've been dealing with the alignment of the interferometer to have a good beam spot at the AS port. Today the alignment      674   Tue Jul 15 12:23:22 2008 Jenne Update General MC2 Watchdog tripped Alberto, Jenne Mode Cleaner was unlocked.  We checked, and      683   Wed Jul 16 16:59:07 2008 Alberto Update General Aligment I think the two beams are aligned again - they both pass the Faraday, they match at the irises and all along the optical path      687   Thu Jul 17 00:59:18 2008 Jenne Summary General Funny signal coming out of VCO While working on calibrating the MC_F signal, Rana and I noticed a funny signal coming out of the VCO.  We expect the output to      706   Mon Jul 21 11:54:00 2008 Jenne Update General MC Servo Board I pulled the MC Servo Board again, to check the components that are on the board, and compare them with the schematics.  The filters      727   Wed Jul 23 21:48:30 2008 rob Configuration General restore IFO when you're done with it [SIZE=3][B]when you are done with the IFO, please click "Restore last auto-alignment"[/B][/SIZE]      738   Fri Jul 25 10:48:13 2008 Koji Update General Abs. Len. Meas. ~ Realignment / beating / PLL trial Alberto and Koji o We worked for the abs length measurement      748   Mon Jul 28 15:54:04 2008 Koji Update General Abs. Len. Meas. ~ More on the beat / the PLL setup Alberto and Koji, Last Friday evening, Koji found that the      774   Thu Jul 31 10:24:32 2008 Koji Update General IFO status Last night I used the Y-arm for the abs length measurement. The Yarm was aligned by the script.       776   Thu Jul 31 11:19:30 2008 Koji Update General Abs. Len. Meas. ~ Resonance search trial Last night, I tried to find the resonance of Yarm by sweeping the frequency of the injection beam.      782   Sat Aug 2 12:53:43 2008 Koji Update General Abs. Len. Meas. ~ New PLL at the PSL table [B]Report of the work last night:[/B] The new heterodyne interferometer on the PSL table was built.      783   Sat Aug 2 13:07:23 2008 Koji Configuration General The AP table cleaned During the construction of the independent PLL I cleaned up some of the unused optics from the AP table. Essentially this should      787   Mon Aug 4 00:37:58 2008 Koji Update General Abs. Len. Meas. ~ RF PD at the Y end / Manual frequency scan [B]Work log on August 2nd[/B] o Just remind you:      788   Mon Aug 4 00:56:07 2008 Koji HowTo General Abs. Len. Meas. ~ Auto freq scanner with GPIB [B]Work log on August 3rd  - Part1[/B] o Yesterday I was too much tired of changing      789   Mon Aug 4 05:23:57 2008 Koji Update General Abs. Len. Meas. ~ Measurement for Y-arm completed Finally, I have completed the abs length and g-factor measurements for Y-arm. [COLOR=green][B]>>>GO FOR THE VENT<<<[/B][/COLOR]      793   Mon Aug 4 21:48:24 2008 Koji Update General Abs. Len. Meas. ~ Scan for TEM00/01/10 [B]Work log on August 3rd  - Part2[/B] o I tried to measure the frequency of the      794   Mon Aug 4 22:31:10 2008 Koji Update General Abs. Len. Meas. ~ Simple Test for TEM01/10 split [B]Work log on August 3rd - Part3[/B] [B]Question:[/B]      795   Tue Aug 5 00:05:57 2008 Koji Update General Abs. Len. Meas. ~ IFR2023A calibration [B]Work log on August 4th[/B] o IFR2023A (Marconi) was calibrated by the      796   Tue Aug 5 02:39:55 2008 Koji Configuration General Abs. Len. Meas. ~ Optical Layout on the AP / PSL table 2008-Aug-05 Here are the PDF and the PNG of the AP and PSL table layouts. After this photo, the squeezing setup at      798   Tue Aug 5 10:56:05 2008 Alberto Configuration General ITMX chamber opened and mirror released D-Mass, Steve, Rana, Koji, Yoichi, Alberto, We opened the ITMX chamber to check the optics after last week earthquake. In particular,      800   Tue Aug 5 17:56:23 2008 Alberto Configuration General SRM and PRM inspection Yoichi, Koji, Rana, Steve, Alberto Today we opened the [B]BSC[/B] to inspect      801   Wed Aug 6 11:10:34 2008 Koji Update General Abs. Len. Meas. ~ analysis of the TEM00 scan [B]Analysis of the data on August 3th ~ Part 1[/B]      802   Wed Aug 6 11:43:52 2008 Koji Update General Abs. Len. Meas. ~ analysis of the TEM01 scan [B]Analysis of the data on August 3th ~ Part 2[/B]      805   Wed Aug 6 19:01:15 2008 Alberto Update General ITMX and SRM OSEM post-earthquake diagnostic Koji, Yoichi, Alberto Today we reset the OSEMs on ITMX and SRM      838   Thu Aug 14 21:52:51 2008 Koji Summary General Abs. Len. Meas. ~ summary of my Summer I have made the summary of the absolute length measurement. It is attached here. The file is a bit big      875   Mon Aug 25 10:23:53 2008 steve HowTo General cable killer Rack 1Y7 double violation: BNC cables left to be jammed by door      938   Wed Sep 10 08:57:03 2008 steve Update General etmy illuminator turned off The ETMY illuminator was left on yesterday. I just turned it off.      940   Wed Sep 10 19:53:53 2008 Alberto Update General abs length experiment Update of the last days work on the experiment to measure the absolute length of the cavities.      943   Thu Sep 11 23:28:35 2008 alberto Update General abs cavity length experiment The MC lost lock for some reason not related to either the FSS or the PMC I'm done with my measurement for tonight. I've shut the      944   Fri Sep 12 11:09:20 2008 Alberto Update General abs cavity length experiment I'm leaving the lab for a couple of hours. I shut the NPRO. The interferometer is available to anyone.      945   Sat Sep 13 23:13:01 2008 Alberto Update General abs cavity length experiment The Y arm was locked all time today but, suddenly, this afternoon it lost lock and since then I've been unable to restore it. I tried unsuccessfully      946   Sun Sep 14 18:30:32 2008 Alberto Update General ABSL: measured X arm Today I measured the X arm FSR. Hi moved the fast PD (Thor Labs PDA255) from the Y end table to the X end table. I had      947   Sun Sep 14 19:29:07 2008 Alberto Update General ABSL: measured X arm [quote]Today I measured the X arm FSR. Hi moved the fast PD (Thor Labs PDA255) from the Y end table to the X end table. I had      956   Wed Sep 17 13:58:36 2008 Alberto Update General ABSL: results from the X arm Today I repeated the measurement of the FSR on the X arm cavity. The noise in the transmitted power that made the measures fluctuate was      960   Wed Sep 17 19:13:47 2008 Alberto Update General ABSL: status I installed the setup for measuring TEM01/10 on the X end table.  I'm leaving. I shut the laser, flipped down      962   Thu Sep 18 09:30:12 2008 steve Update General low noise metal film resistors are in Low noise metal film resistor and capacitor kits from www.garrettelec.com are in.      979   Mon Sep 22 20:00:35 2008 Alberto Update General ABSL: running measurement I'm leaving the X arm locked on the TEm01 mode while a measurement is running. Just please wait for 40 minute if you need the      987   Wed Sep 24 17:57:04 2008 Alberto Update General ABSL: FSS Slow Actuator Control Rana, Alberto Today when I started working with the PLL      994   Thu Sep 25 17:14:31 2008 rana Configuration General new sitemap        1030   Tue Oct 7 10:49:29 2008 Alberto Update General Displaced Photodiode This morning I found that the photodidode of the PLL in the PSL table was not aligned to the beam anymore. The PD support was not

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