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ID Date Author Type Category Subject Text   14053   Wed Jul 11 16:50:34 2018 pooja Update Cameras Update in developing neural networks Aim: To develop a neural network that resolves mirror motion from      Draft   Wed Jul 11 18:13:19 2018 keerthana Summary AUX Gouy Phase Measurements from AUX-Laser Scans From the Measurement Jon made, FSR is 3.967 MHz and the Gouy phase is 52 degrees. From this, the length of the Y-arm cavity      14055   Thu Jul 12 11:13:39 2018 gautam Update General OMC revival Aaron and I are going to do the checkout of the OMC electronics outside vacuum today. At some point, we will also want to run a      14056   Thu Jul 12 12:26:39 2018 aaron Update General OMC revival We found a diagram describing the DC Readout wiring scheme on the wiki page for DC      14057   Thu Jul 12 14:06:39 2018 keerthana Update elog Finesse and Analytical solution - Comparison I tried to compare the cavity scan data we get from the Finesse simulation and that we expect from the Analytical solution. The      14058   Thu Jul 12 15:15:47 2018 Sandrine Update   Beat Note Measurements for Cavity Scans (Gautam, Sandrine) We calculated the expected power of the beat note for Annalisa's Y arm      14059   Thu Jul 12 16:18:22 2018 Steve Update VAC Vent preparations We are getting ready to vent.        14060   Thu Jul 12 21:16:25 2018 aaron Update OMC Checking OMC Electronics In preparation for tomorrow's vent, I'm checking some of the OMC-related electronics we plan to use.      14061   Thu Jul 12 23:59:14 2018 gautam Update General Vent objectives and prep Vent objectives:      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      14063   Fri Jul 13 02:52:11 2018 gautam Update General Vent objectives and prep [KA, GV]      14064   Fri Jul 13 10:54:55 2018 aaron Update VAC Vent 80 [aaron, steve] Steve gave me a venting tutorial. I'll record this in probably a bit more      14066   Fri Jul 13 16:26:52 2018 Steve Update VAC Vent 80 is completing... Steve and Aaron, 6 hrs vent is reaching equlibrium to room air. It took 3 and a half instrument      14067   Fri Jul 13 17:13:45 2018 Koji Update General Vent objectives and prep Notice: I removed these 75Ohm video cables.      14068   Fri Jul 13 18:01:13 2018 gautam Update General Low power MC After getting the go ahead from Steve, I removed the physical beam block on the PSL table, sent the beam into the IFO, and      14069   Fri Jul 13 20:36:33 2018 Koji Summary General In vac/In air heater wiring I went to the Y-end and took more photos of the cable stand. These revealed that in-vac pin #13 is connected to the shield of the      14070   Fri Jul 13 23:23:49 2018 pooja Update Cameras Update in developing neural networks Aim: To develop a neural network that resolves mirror motion from      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,      14072   Sat Jul 14 16:04:34 2018 aaron Update OMC Checking OMC Electronics Next check is the DCPD/OMMT Satellite Box I traced a cable from the OMC electrical feedthrough flanges to find      14073   Mon Jul 16 15:07:19 2018 Koji Summary VAC Oven C vent [Steve Koji] - Attachment1: Removed the thermal cap. Checked the temperature of the oven.      14074   Mon Jul 16 18:12:00 2018 Koji Update VAC Adding a manual gate valve between TP1 and V1/VM2 [Steve Koji] We are in the process of adding a manual gate valve between TP1 (Osaka Maglev)      14075   Tue Jul 17 01:07:40 2018 gautam Update SUS ETMY EQ stops For the heater setup on EY table, I EQ-stopped ETMY. Only      14076   Tue Jul 17 12:46:28 2018 rana Update General some notes from yesterday For the EY, instead of balancing the table, I just moved the weight approximately so that the ETMY OSEMS were at half light, but      14077   Tue Jul 17 12:55:45 2018 Koji Summary General Started pumping [Steve, Koji, Gautam] We started pumping down at ~12:15PM.  6x    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    14079   Tue Jul 17 18:16:38 2018 Steve Summary VAC pumpdown 81 at 6 hrs Precondition:  4 days at atm.   Atm5 HEPA tent used during the vent  6x    14080   Tue Jul 17 22:25:41 2018 Koji Summary VAC pumpdown 81 at 6 hrs 10:20PM Opened VM2 to pump down the RGA section with TP1 Stopped      14081   Wed Jul 18 03:14:48 2018 Annalisa Update General Vent 80 recovery [Gautam, Johannes, Koji, Annalisa] Tonight we increased the power of the PSL laser and we achieved the lock      14082   Wed Jul 18 12:49:08 2018 Steve Summary VAC pumpdown 81 at 6 +4.5hrs The manual gate valve scan was clean. Atm1     TP1 was pumping on it overnight.                14083   Wed Jul 18 17:36:50 2018 Steve Summary VAC pumpdown 81 at 6 +9 hrs completed IFO P1 6e-4 Torr,  manual gate valve is fully open The annuloses will be pumped down      14084   Wed Jul 18 23:43:50 2018 Koji Update General Vent 80 recovery Is the reflector too close to the beam and causing clipping?      14085   Thu Jul 19 01:56:25 2018 gautam Summary VAC AUX pump shutdown [koji, gautam] Per Steve's instructions, we      14086   Thu Jul 19 04:44:09 2018 Annalisa, Terra Summary Thermal Compensation frequency shift observed with heating! Annalisa, Gautum, Koji, Terra Summary: with the reflector setup, we measured a frequency      14087   Thu Jul 19 11:01:03 2018 Steve Summary VAC pd81 @ 2e-5 Torr Cold cathode gauge just turned on.      14088   Thu Jul 19 13:35:30 2018 Steve Summary VAC annuloses pumped Roughing down the annuloses required closing V1 for 13 minutes IFO is 2.2e-5 Torr      14089   Thu Jul 19 18:09:17 2018 pooja Update Cameras Update in developing neural networks Aim: To develop a neural network that resolves mirror motion from      14090   Fri Jul 20 07:43:54 2018 Steve Summary SUS ETMY          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      14092   Fri Jul 20 22:51:28 2018 Koji Update IOO IMC WFS path alignment IMC WFS tuning  - IMC was aligned manually to have maximum output and also spot at the center      14093   Fri Jul 20 22:53:15 2018 Koji Update ASS Attempt to resurrect Yarm ASS [Koji Gautam] We managed to realize stable ASS configuration for Yarm. The transmission      14094   Sat Jul 21 01:06:49 2018 gautam Summary Thermal Compensation Y arm locking I implemented this today. For now, the LSC output matrix is set to actuate on MC2 for Y arm locking. As expected, the transmission      14095   Sat Jul 21 01:14:02 2018 gautam Update OMC PZT Jena driver board check [Aaron, gautam] We did a quick check of this board today. Main takeaways:      14096   Sat Jul 21 14:03:19 2018 Koji Summary Thermal Compensation Y arm locking Ah. With MC2 feedback, we have about 3 times smaller "optical gain" for the ASS A2L. We have same dither, same actuator,      14097   Sun Jul 22 14:01:07 2018 pooja Update Cameras Developing neural networks on simulated video Aim: To develop a neural network that resolves mirror motion from      14098   Mon Jul 23 09:58:52 2018 Steve Summary VAC RGA scan at day 6          14100   Tue Jul 24 06:11:50 2018 rana Update Cameras Developing neural networks on simulated video This looks like good progress. Instead of fixed sines or random noise, you should generate now a time series for the motion      14101   Tue Jul 24 09:47:51 2018 gautam Update Cameras Developing neural networks on simulated video I was thinking a little more about the way we are training the network for the current topology - because the network has no recurrent      14103   Wed Jul 25 14:45:59 2018 Sandrine Summary Thermal Compensation ETM Y Table AUX read out Attached is a photo of the set up of the ETM Y table showing the AUX read out set up.       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      14105   Thu Jul 26 01:52:01 2018 terra Update Thermal Compensation heater work update Just a quick update: over the past few days we've taken (at least) 5 scans around each peak [carrier - HOM3] at 9.4V/0.8A,

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