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ID Date Author Type Category Subject Text   2230   Tue Nov 10 19:21:53 2009 Alberto Update ABSL PLL Alignment I've been trying to lock the PLL for the AbsL Experiment but I can't see the beat (between the auxiliary NPRO and the PSL).      2236   Wed Nov 11 12:29:44 2009 Alberto Frogs PSL MC Locked on the wrong mode? This morning, after Steve pointed out that the readout RFAMPD_DC was zero, I thought of realigning the beam on the photodiode.      2238   Wed Nov 11 15:04:52 2009 Alberto Update ABSL Working on the AP table I've opened the AP table and I'm working on it.      2239   Wed Nov 11 16:18:57 2009 Alberto Update ABSL Working on the AP table                                2249   Thu Nov 12 10:45:02 2009 Alberto Update PSL Abandoned Frequency Generator This morning I found a frequency generator connected to something on the PSL table sitting on the blue step next to the sliding doors.      2250   Thu Nov 12 10:45:36 2009 Alberto Update ABSL Working on the AP table I've opened the AP table and I'm working on it. Also auxiliary NPRO turned on and      2252   Thu Nov 12 11:34:38 2009 Alberto Update ABSL Working on the AP table                                2253   Thu Nov 12 12:50:35 2009 Alberto Update Computers StochMon calibrated channels added to the data trend I added the StochMon calibrated channels to the data trend by including the following channel names in the C0EDCU.ini file:      2254   Thu Nov 12 12:51:45 2009 Alberto Update ABSL Working on the AP table                    2256   Thu Nov 12 16:13:05 2009 Alberto Update PSL MC Trans Offset On Rana's suggestion I checked the MC transmission QPD (C1:IOO-MC_TRANS_SUM). I found that the readout is almost zero when      2257   Thu Nov 12 16:53:59 2009 Alberto Update ABSL Working on the AP table                                2261   Thu Nov 12 18:10:27 2009 Alberto Update ABSL PLL Locked I locked the PLL and made some first measuremtns of the spectrum of the error signal. I'll post them later.      2271   Sun Nov 15 18:42:10 2009 Alberto Update Locking Interferometer fully locked for 3331 seconds This afternoon, I tried to lock the interferometer again after a few days. After a couple of failed attempts,      2302   Thu Nov 19 16:04:48 2009 Alberto Configuration elog Elog debugging output - Down time programmed today to make changes We want the elog process to run in verbose mode so that we can see what's going. The idea is to track the events that trigger      2303   Thu Nov 19 18:49:55 2009 Alberto Configuration elog Elog debugging output - Down time programmed today to make changes                    2308   Fri Nov 20 13:54:45 2009 Alberto Omnistructure Environment New Paper and Cardboard Recycling Bins Introduced to the 40m The 40m produces a large amount of paper and cardboard waste. It would be worth it if we disposed those kind of garbages for      2321   Tue Nov 24 14:33:22 2009 Alberto Update ABSL working on the AP table I'm working on the AP table. I also opened the auxiliary NPRO shutter. The auxiliary beam is on its path on the AP table and PSL      2324   Tue Nov 24 19:16:02 2009 Alberto Update ABSL working on the AP table                                2326   Wed Nov 25 08:43:08 2009 Alberto Update ABSL Working on the AP table I'm working on the AP table. I also opened the auxiliary NPRO shutter. The auxiliary beam is on its path on the AP table and PSL      2328   Wed Nov 25 10:20:47 2009 Alberto Update ABSL AbsL PLL not able to lock Last night something happened on the beat between the PSL beam and the auxiliary NPRO beam, that spoiled the quality of the      2329   Wed Nov 25 11:02:54 2009 Alberto Update ABSL AbsL PLL not able to lock                    2334   Wed Nov 25 15:42:27 2009 Alberto Update ABSL Working on the AP table                                2337   Wed Nov 25 20:14:58 2009 Alberto Update ABSL AbsL PLL not able to lock: problem fixed                    2338   Wed Nov 25 20:24:49 2009 Alberto Update ABSL PLL Open Loop Gain Measured I measured the open loop gain of the PLL in the AbsL experiment. I repeated the measurement twice:      2339   Wed Nov 25 20:28:17 2009 Alberto Update ABSL Stopped working on the AbsL I closed the shutter of the NPRO for the night.      2345   Mon Nov 30 10:28:47 2009 Alberto AoG all down cond. sea of red                    2346   Mon Nov 30 11:29:40 2009 Alberto AoG all down cond. sea of red                    2350   Thu Dec 3 15:55:24 2009 Alberto AoG LSC RF AM Stabilizer Output Power Today I measured the max output power at the EOM output of one of the RF AM Stabilizers that we use to control the modulation depth.      2365   Tue Dec 8 10:20:33 2009 Alberto DAQ Computers Bootfest succesfully completed Alberto, Kiwamu, Koji, this morning we found the RFM network and all the front-ends down.      2376   Thu Dec 10 08:40:12 2009 Alberto Update Computers Fronte-ends down I found all the front-ends, except for C1SUSVME1 and C0DCU1 down this morning. DAQAWG shows up green on the C0DAQ_DETAIL screen      2378   Thu Dec 10 08:50:33 2009 Alberto Update Computers Fronte-ends down                    2384   Thu Dec 10 13:10:25 2009 Alberto Configuration LSC 166 LO Disconnected I temporarily disconnected the Heliax cable that brings the 166MHz LO to the LSC rack. I'm doing a couple of measurement      2389   Thu Dec 10 17:05:21 2009 Alberto Configuration LSC 166 MHz LO SMA-to-Heliax connection repaired I replaced the SMA end connector for the 166 MHZ Local Oscillator signal that goes to the back of the flange in the 1Y2 rack.      2393   Thu Dec 10 18:31:44 2009 Alberto Configuration LSC 166 LO Disconnected                                2396   Fri Dec 11 11:42:26 2009 Alberto Configuration LSC 166 LO Disconnected                                2397   Fri Dec 11 13:18:17 2009 Alberto Configuration VAC pumpdown has started                                2402   Fri Dec 11 19:51:13 2009 Alberto Configuration LSC 166 LO Disconnected                                2413   Mon Dec 14 14:16:14 2009 Alberto Update Treasure LOCKSTARS                                2415   Mon Dec 14 19:33:04 2009 Alberto Update General Arm Cavity Poles measured again after cleaning the optics last week Last week we vented and we cleaned the main optics of the arm cavities. I measured the frequency of the cavity      2418   Tue Dec 15 05:29:31 2009 Alberto Update General Arm Cavity Poles measured again after cleaning the optics last week    The Y arm cavity pole moved down by 130 Hz, whereas the X arm moved by      2420   Tue Dec 15 21:39:34 2009 Alberto Update ABSL brief summary of this afternoon's measurements I took measurements of the open loop gain of the AbsL PLL with the old Universal PDH Box. I Also measured the      2421   Wed Dec 16 11:21:20 2009 Alberto Update ABSL Universal PDH Box Servo Filters Yesterday I measured the shape of the servo filter of both the old and the new Universal PDH boxes. Here they      2422   Wed Dec 16 11:46:25 2009 Alberto Update ABSL Absl PLL Open Loop Gain Yesterday I measured the Open Loop Gain of the PLL in the absolute length experiment. The servo I used was that of the old Universal      2427   Thu Dec 17 09:30:08 2009 Alberto HowTo Computers Nodus sluggish The elog has been quite slow for the last two days. The cause is nodus, that has been slowing down the access to it.      2428   Thu Dec 17 17:13:50 2009 Alberto Omnistructure Environment STACIS stuff One of the electronics benches is currently occupied by the STACIS equipment. We need that table If no one is working on the      2429   Thu Dec 17 19:03:14 2009 Alberto HowTo Computers Nodus sluggish                                2459   Mon Dec 28 15:19:19 2009 Alberto Update Computers Burtrestored to Dec 26 at 20:00 Since it wasn't sure whether all the front-ends had been restored after the bootfest, I burtrestored everything to Dec 26 at 20:00.      2460   Mon Dec 28 15:34:14 2009 Alberto Update ABSL Working on the AP table I opened the auxiliary laser's shutter. I'm currently working on the AP table.      2461   Mon Dec 28 18:35:27 2009 Alberto Update ABSL Working on the AP table                                2467   Wed Dec 30 10:58:48 2009 Alberto Update General All watchdogs tripped this morning This morning I found all the watchdogs had tripped during the night. I restored them all.

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