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ID Date Author Type Category Subject Text   12265   Thu Jul 7 10:49:03 2016 gautam Update General Vent progress - ETMX SUS Coil driver electronics investigation      12271   Fri Jul 8 11:35:45 2016 gautam Update General Vent progress - ETMX SUS Coil driver electronics investigation Yesterday, I expanded the extent of the ETMX suspension coil driver investigation. I set up identical monitors for two more      12272   Fri Jul 8 11:48:09 2016 Koji Update General Vent progress - ETMX SUS Coil driver electronics investigation YES Move the suspension on the south      12281   Fri Jul 8 21:22:38 2016 gautam Update General Vent progress - ETMX SUS Coil driver electronics investigation While ETMX is out, I'm leaving the larger amplitude excitations to the coils on over the weekend, in case any electronic      12297   Wed Jul 13 00:38:25 2016 Johannes Update General Vent progress - ETMY attempted repositioning [Lydia, Johannes] We attempted to move the ETMY suspension near the access port in preparation for the      12310   Tue Jul 19 13:21:42 2016 Johannes Update General Vent progress - ETMY attempted repositioning [Lydia, Johannes] We moved ITMY from its original position to a place near the access point.      12295   Tue Jul 12 23:51:16 2016 Johannes Update General Vent progress - ETMY inspection On Monday I inspected ETMY, and found nothing really remarkable. There was only little dust on the HR side, and nothing visible      12289   Mon Jul 11 15:13:22 2016 gautam Update General Vent progress: in-date First Contact procured I have obtained 2x100cc bottles of in-date first contact from Garilynn (use before date is 09/14/2016) for cleaning of our test-masses.      12534   Wed Oct 5 19:43:13 2016 gautam Summary General Vent review This elog is meant to review some of the important changes made during the vent this summer - please add to this if I've forgotten      9572   Thu Jan 23 23:10:19 2014 ericq Update General Vent so far [ericq, Manasa, Jenne] Summary: We opened up the BS and both ITM chambers today, and put the      9579   Mon Jan 27 21:36:35 2014 ericq Update General Vent so far After turning the slow FSS threshold down, the mode cleaner stays locked enough to do other things. We were able to align the tip      2360   Mon Dec 7 09:38:05 2009 Koji Update VAC Vent started Steve, Jenne, Koji The PSL was blocked by the      14607   Tue May 14 10:35:58 2019 gautam Update General Vent underway PSL had stayed on overnight. There was an EQ (M 4.6 near Costa Rica) which showed up on the Seis BLRMS, and I noticed that      10545   Fri Sep 26 16:10:14 2014 ericq Update General Vent update Today so far:     I moved SRM forward by 3mm     Then I leveled the ITMY      10546   Fri Sep 26 17:13:39 2014 ericq Update General Vent update                                10549   Mon Sep 29 12:47:51 2014 ericq Update General Vent update                                10550   Mon Sep 29 17:10:51 2014 ericq Update General Vent update Everything is aligned, AS and POY make it out of vacuum unclipped, OSEM readings look good.      10551   Mon Sep 29 18:12:24 2014 ericq Update General Vent update I closed the PSL shutter as we didn't want to burn the mirror surface when we are not working.      10552   Tue Sep 30 11:53:29 2014 ericq Update General Vent update   Photos have been taken of the ITMY chamber, and uploaded to picasa. Here's a      7306   Wed Aug 29 11:47:21 2012 ericq Update VAC Venting  [Steve, Eric] I've been helping Steve vent this morning. The following things were done (from      38   Wed Oct 31 10:31:23 2007 Andrey Rodionov Routine VAC Venting is in progress We (Steve, David, Andrey) started venting the vacuum system at 9.50AM Wednesday morning.      17866   Thu Sep 21 14:22:02 2023 Radhika Summary Electronics Vertex Electronics CDS Update I recalculated the scale factors between OSEM sensor readings after/before the upgrade. The expected factor is 8.64, although we      17867   Fri Sep 22 16:20:25 2023 Radhika Summary Electronics Vertex Electronics CDS Update Today we tried to debug the unreasonable OSEM readings (see previous ELOG)      17868   Fri Sep 22 18:26:08 2023 Radhika Summary Electronics Vertex Electronics CDS Update [Koji, Radhika, Murtaza] All upgraded suspensions      17871   Fri Sep 22 19:38:06 2023 Murtaza Summary Electronics Vertex Electronics CDS Update PRM CHANNEL 1-4 (BS FEEDTHROUGH 1-3)      17830   Thu Sep 7 14:09:37 2023 Koji Summary Electronics Vertex Electronics Transition The vertex electronics transition work will begin on Monday. We expect the ongoing ASS-X work to be completed by then. But if      17838   Tue Sep 12 18:55:55 2023 Koji Summary Electronics Vertex Electronics Transition We are ready to do the transition from Wed 1PM. The items for the upgrade was collected      17839   Tue Sep 12 23:10:06 2023 Koji Summary Electronics Vertex Electronics Transition Note on Sorensen: - Eurocard crate requires +-15V. We can place two 15V Sorensens on      17843   Wed Sep 13 17:26:26 2023 Koji Summary Electronics Vertex Electronics Transition ~ DAY 1 [Radhika, Paco, Murtaza, Koji] - Removed all the units that will not be used in the new setup.      17844   Thu Sep 14 11:46:28 2023 Koji Summary Electronics Vertex Electronics Transition ~ DAY 2 [Radhika, Paco, Murtaza, Koji] Morning work: Power Strip assembly Power      17845   Fri Sep 15 12:51:29 2023 Koji Summary Electronics Vertex Electronics Transition ~ DAY 3 [Radhika, Paco, Murtaza, Koji] We made great      17848   Mon Sep 18 10:26:12 2023 Koji Summary Electronics Vertex Electronics Transition ~ DAY 4 [JC, Paco, Radhika, Koji] Morning/Afternoon work: Long DB cable installation      17849   Mon Sep 18 18:38:02 2023 Radhika Summary Electronics Vertex Electronics Transition ~ DAY 4 [Koji, Paco, Radhika] We recorded the 5 OSEM sensor readings for each of the 8 upgraded optics.      17852   Mon Sep 18 20:16:03 2023 Koji Summary Electronics Vertex Electronics Transition ~ DAY 4 - Here is the thought how does the factor of 9 come from: We are driving OSEM LEDs      17853   Mon Sep 18 23:09:40 2023 Koji Summary Electronics Vertex Electronics Transition ~ DAY 4 MC1 is ready for the damping test Trouble shooting plan Is the LED on? => Check      17854   Tue Sep 19 17:25:38 2023 Radhika Summary Electronics Vertex Electronics Transition ~ DAY 5 MCs OSEM input / coil output gain tuning Seeing that MC1, MC2, MC3 OSEM readings looked reasonable      17855   Tue Sep 19 19:21:10 2023 Radhika Summary Electronics Vertex Electronics Transition ~ DAY 5 [Koji, Radhika] Update to the Foton/Load      17840   Wed Sep 13 12:46:03 2023 Koji Summary Electronics Vertex Electronics Transition ~ final prep [OK] Reflected the sorensen setup (minimal change from the conventional config. (See the attachment) Before      17841   Wed Sep 13 13:50:48 2023 Radhika Summary Electronics Vertex Electronics Transition ~ final prep OSEM values for 8 vertex optics ~before~ electronics upgrade (averaged over 60 s): ['C1:SUS-BS_ULSEN_IN1',      17842   Wed Sep 13 14:02:29 2023 Koji Summary Electronics Vertex Electronics Transition ~ final prep - 4x 1064nm NPROs are OFF. The lab hall is laser safe, although      17856   Tue Sep 19 19:48:20 2023 Koji Summary Electronics Vertex Electronics Trouble shooting [Paco, Murtaza, JC, Koji, Radhika] MC1/MC2 was working fine. At      17857   Tue Sep 19 20:49:08 2023 Koji Summary Electronics Vertex Electronics Trouble shooting [Murtaza, Koji] ITMX / BS / PRM sat amps were removed from the rack and checked on the workbench.      17858   Tue Sep 19 23:40:33 2023 Koji Summary Electronics Vertex Electronics Wed Plan Plan for Sept 20, 2023 For morning people:      17864   Wed Sep 20 18:18:38 2023 Koji Summary Electronics Vertex Electronics Wed Plan [Koji, Murtaza, JC] Regarding PRM/BS: PRM2 cable and BS2 cable      17860   Wed Sep 20 00:20:09 2023 Koji Summary Electronics Vertex Electronics ~ change in the actuator calibration I found the actuator calibration is more complicated. The numbers I reported in the previous elog was not correct.      17861   Wed Sep 20 14:04:58 2023 Radhika Summary Electronics Vertex Electronics ~ change in the actuator calibration MC1/MC2/MC3 damping restored I tweaked      17862   Wed Sep 20 17:02:22 2023 Radhika Summary Electronics Vertex Electronics ~ change in the actuator calibration [Paco, Radhika] IMC LOCKED We      13620   Thu Feb 8 00:01:08 2018 gautam Update CDS Vertex FEs all crashed I was poking around at the LSC rack to try and set up a temporary arrangement whereby I take the signals from the DAC differentially      15383   Mon Jun 8 18:14:55 2020 gautam Update CDS Vertex FEs crashed Summary: Around 5pm local time, the three vertex FEs crashed. AFAIK,       7770   Fri Nov 30 23:10:36 2012 Charles Update Electronics Vertex Illuminators  3 of the 4 remote controlled illuminators at the vertex are installed and can now be turned on via sitemap. There are a total

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