40m QIL Cryo_Lab CTN SUS_Lab CAML OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop

40m Log, Page 72 of 350  Not logged in

List |  Find |  Login |  Help

Full | Summary | Threaded     -- All entries -- Last day Last 3 Days Last week Last month Last 3 Months Last 6 Months Last Year -- Type -- Configuration Update Summary HowTo Bureaucracy Omnistructure Metaphysics Frogs  17467 Entries

Goto page Previous  1, 2, 3 ... 71, 72, 73 ... 348, 349, 350   Next

ID Date Author Type Category Subject Text   14019   Tue Jun 26 16:28:00 2018 gautam Update SUS Coil driver protoboard characterization I wanted to investigate my coil driver noise measurement technique under more controlled circumstances, so I spent yesterday setting      14018   Tue Jun 26 10:50:14 2018 pooja Update Cameras Beam spot tracking using OpenCV Aim: To track the motion of beam spot in simulated video. I simulated a video that moves      14017   Tue Jun 26 10:06:39 2018 keerthana Update AUX First Coherent AUX Scan of PRC Using AM Sidebands (Jon, Keerthana, Sandrine) I am attaching the plots of the Reflected and transmitted AUX beam. In the      14016   Mon Jun 25 22:27:57 2018 shruti Update PEM Seismometer temp control - heater circuit After removing all the clamping screws from the heater circuit board, I soldered the wire connecting IRF630 to the output      14015   Mon Jun 25 21:14:08 2018 Koji Summary General Re: A summary of the Tip-TIlt Mirror Holder design changes 3. - Do we need this much of extended range of the clamp location? How much range      14014   Mon Jun 25 19:14:02 2018 Udit Summary General Re: A summary of the Tip-TIlt Mirror Holder design changes 2. Weighted screw rod at the bottom for tilting the mirror-holder: The screw length selected here      14013   Sun Jun 24 23:13:46 2018 johannes Update General AUX beam alignment issues At some point we want to change the AUX injection on the AS table to interfere less with the normal interferometer path, and      14012   Sun Jun 24 20:02:07 2018 gautam Update SUS Some notes about coil driver noise Summary: For a series resistance of 4.5 kohm, we are suffering from the noise-gain      14011   Sat Jun 23 20:54:35 2018 Koji Update AUX First Coherent AUX Scan of PRC Using AM Sidebands How much was the osc freq of the marconi? And then how much was the resulting freq offset between PSL and AUX?      14010   Sat Jun 23 13:08:41 2018 Jon Update AUX First Coherent AUX Scan of PRC Using AM Sidebands [Jon, Keerthana, Sandrine] Thu.-Fri. we continued with PRC scans using the AUX laser, but now the "scanned"      14009   Fri Jun 22 18:30:21 2018 gautam Update SUS ITMY_UL sensor I think if the magnet fell off, we would see high DC signal, and not 0 as we do now. I suspect satellite box or PD readout board/cabling.      14008   Fri Jun 22 15:22:39 2018 sudo Update CDS DTT working Quote:      14007   Fri Jun 22 15:13:47 2018 gautam Update CDS DTT working Seems like DTT also works now. The trick seems to be to run       14006   Fri Jun 22 14:18:04 2018 Steve Update PSL Optics on AS table        14005   Fri Jun 22 10:42:52 2018 pooja Update   Developing neural networks Aim: To find a model that trains the simulated data of Gaussian beam spot moving in a vertical direction by the application of a sinusoidal      14004   Fri Jun 22 08:50:33 2018 Steve Update SUS ITMY_UL sensor We may lost the UL magnet or LED      14003   Fri Jun 22 00:59:43 2018 gautam Update CDS pianosa functional, but NO DTT MEDM, EPICS and dataviewer seem to work, but diaggui still doesn't work (it doesn't work on Rossa either, same problem as reported      14002   Fri Jun 22 00:06:13 2018 shruti Update General over-head fluorescent lights down Two out of the four over-head fluorescent lights in the X end of the interferometer were flickering today.      14001   Thu Jun 21 23:59:12 2018 shruti Update PEM Seismometer temp control We (Rana and I) are re-assembling the temperature controls on the seismometer to attempt PID control and then improve it using reinforcement      14000   Thu Jun 21 22:13:12 2018 gautam Update CDS pianosa upgrade pianosa      13999   Thu Jun 21 18:25:57 2018 gautam Update SUS ETMX coil driver re-installed Initial tests look promising. Local damping works and I even locked the X arm using POX,      13998   Thu Jun 21 15:32:05 2018 gautam Update Electronics EX AA filter range change [steve, gautam] I took this opportunity of EX downtime to change the supply voltage for the AA unit      13997   Thu Jun 21 14:57:59 2018 Koji Summary General A summary of the Tip-TIlt Mirror Holder design changes > 2. Weighted screw rod at the bottom for tilting the mirror-holder: Too long. The design of the holder      13996   Thu Jun 21 14:23:22 2018 Udit Khandelwal Summary General A summary of the Tip-TIlt Mirror Holder design changes Here’s a quick summary of the Tip-Tilt Design updates (all files are in the dropbox in [TipTiltSus>TT_New]) that I have been      13995   Thu Jun 21 13:24:00 2018 keerthana Update elog The cavity scan data of June 20 (Jon, Keerthana, Sandrine) We tried to align the AUX and PSL laser yesterday. We collected the data from      13994   Thu Jun 21 09:33:02 2018 Jon Update   AUX Mode Scans of YARM, PRC cavities [Jon, Keerthana, Sandrina] Yesterday we carried out preliminary proof-of-concept measurements using      13993   Thu Jun 21 03:13:37 2018 gautam Update SUS ETMX coil driver noise I decided to take a quick look at the data. Changes made to the ETMX coil driver board: Fast path series resistances:      13992   Thu Jun 21 00:14:01 2018 gautam Update SUS ETMX coil driver out I finished the re-soldering work today, and have measured the coil driver noise pre-Mods and post-Mods. Analysis tomorrow. I am holding      13991   Wed Jun 20 20:39:36 2018 pooja Update Cameras CCD calibration using LED1050E        13990   Wed Jun 20 09:16:56 2018 Steve Update PEM dusty lab You should wipe off the table cover before you take it off next time. It is important to turn up the      13989   Wed Jun 20 00:57:04 2018 johannes Update General AUX beam alignment issues We did swap a lens as discussed in elog 13968, but they both had f=100mm specified, the difference being one was AR-coated for 1064      13988   Tue Jun 19 23:27:27 2018 gautam Update SUS ETMX coil driver work in AM tomorrow Per discussion today eve, barring objections,      13987   Tue Jun 19 18:56:55 2018 Jon Update General AUX beam alignment issues Not much progress today with the AUX cavity scans. I've determined there still are some alignment issues.      13986   Tue Jun 19 14:08:37 2018 pooja Update Cameras CCD calibration using LED1050E Aim: To measure the optical power from led using a powermeter. Yesterday Gautam drilled a larger      13985   Tue Jun 19 00:19:00 2018 gautam Update ASC POP status check Motivation: I want to use the QPD at POP, calibrate it into physical units, and      13984   Mon Jun 18 19:47:02 2018 gautam Update General MICH actuator calibration Summary: The actuator (pendulum) gains for the Beam Splitter and the two ITMs were measured      13983   Mon Jun 18 16:57:54 2018 Koji Update PSL Optics on AS table Of course, many (but no all) of the optics were custom-ordered back in ~2000.      13982   Mon Jun 18 15:59:17 2018 johannes Update PSL Optics on AS table Quote:      13981   Mon Jun 18 14:32:42 2018 gautam Update PSL Optics on AS table Yesterday, I moved the following optics: Lens in front of AS110 PD. BS splitting light between      13980   Mon Jun 18 12:07:03 2018 Koji Update General Chiara new USB 4TB DIsk The initial local backup with rsync was done. Now the new 4TB disk is (supposed to be) automatically      13979   Mon Jun 18 11:12:23 2018 Kira Summary PEM finishing up work at the lab Since I am finishing my job at the lab, I have stored all my electronics in a box (attachment 1) and placed it under the table      13978   Mon Jun 18 10:34:45 2018 johannes Update Computer Scripts / Programs running comsol job on optimus I'm running a comsol job on optimus in a tmux session named cryocavs. Should be done in less than 24 hours, judging by      13977   Sun Jun 17 14:20:35 2018 Koji Update General Chiara new USB 4TB DIsk I have connected a 4TB disk to chiara via a USB-SATA adapter. This disk has been recognized as /dev/sde. A GUID Partition Table (GPT),      13976   Sat Jun 16 20:57:59 2018 Jon Update General PRC modescan attempt Here's a Finesse modeling of what we're expecting to observe with this test. It uses Gautam's base      13975   Sat Jun 16 01:25:29 2018 Koji Update General PRC modescan attempt The PRC FSR is, of course, very close to twice of our f1 moudlation frequency (11MHz x 2 = 22MHz) .      13974   Sat Jun 16 00:26:48 2018 gautam Update General PRC modescan attempt [Jon, Gautam, Johannes] We did the following today: Dither align arms such      13973   Fri Jun 15 14:22:05 2018 gautam Update ALS BeatMouth PDFR measurement I did the measurement with the BeatMouth open today. Main changes: Directly pipe the RF output      13972   Fri Jun 15 09:51:55 2018 pooja Update Cameras Developing neural network Aim : To develop a neural network on simulated data. I developed a python code that      13971   Fri Jun 15 09:14:42 2018 Steve Update General Oplev sums Oplev sums of 240 days.      13970   Fri Jun 15 08:09:15 2018 Steve Bureaucracy General cleaning up at the PSL enclousure The cabeling was cleaned up a little bit yesterday morning. The upper back side is still massy.

Goto page Previous  1, 2, 3 ... 71, 72, 73 ... 348, 349, 350   Next

ELOG V3.1.3-