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

40m Log, Page 230 of 355  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  17705 Entries

Goto page Previous  1, 2, 3 ... 229, 230, 231 ... 353, 354, 355   Next

ID Date Author Type Category Subject Text   6299   Tue Feb 21 08:33:16 2012 steve Update Green Locking periscope adapter plate Two extender plates ready for cleaning. The existing optical table tops have 38" OD. Using two of these the OD will be 44"      6298   Tue Feb 21 04:30:02 2012 kiwamu Update LSC Y arm + PRMI I tried the "Yarm + PRMI" configuration to see what happens.      6297   Sat Feb 18 18:29:38 2012 Den Update Adaptive Filtering online filtering I tried to filter MC_F from seismic noise measured by GUR1 seismometer. I've used 8000 tap filter, downsample ratio=8, delay=1.      6296   Sat Feb 18 17:01:26 2012 Den Update Adaptive Filtering static variables In order to prevent different DOF from redetermining static variables in the adaptive code, I've created a separate code for each      6295   Sat Feb 18 16:58:59 2012 kiwamu Update IOO MC suspension realigned [ Den / Kiwamu]  We have realigned the MC suspensions so that      6294   Sat Feb 18 12:23:09 2012 Den Update IOO MC When I came to the 40m this afternoon, the MC was unlocked. Here is the trend of MC_F for last 2 hours      6293   Fri Feb 17 04:45:48 2012 kiwamu Update LSC sensing matrix of PRMI I locked the PRMI with the AS55I and Q combination.        6292   Fri Feb 17 01:02:22 2012 kiwamu Update IOO MC is back to normal [Koji / Kiwamu]  The MC is now back to normal. The beam pointing      6291   Thu Feb 16 23:12:55 2012 kiwamu Update IOO MC unlocking frequently The MC became crazy again. It seems that there were corresponding      6290   Thu Feb 16 21:13:07 2012 Suresh Update Electronics REFL165 repair: PD replaced, DC response checked with a torch light [Koji, Suresh] Kiwamu mentioned that REFL165 is not responding and its DC out seems saturated      6289   Thu Feb 16 13:12:30 2012 rana Update LSC sensing matrix of PRMI                                6288   Thu Feb 16 09:59:16 2012 steve Update ASC IP- ANG Initial pointing or IP-ANG is a pointing monitor of the MC. This beam is launched after the second  pzt  steering      6287   Thu Feb 16 07:38:24 2012 Koji Update LSC sensing matrix of PRMI So why don't you use AS55I and Q for the control of PRMI???      6286   Thu Feb 16 04:29:30 2012 kiwamu Update LSC upconversion noise from BS motion Sometimes ago I reported that there have been a kind of upconversion noise when PRM was excited (#6211).      6285   Thu Feb 16 04:02:16 2012 kiwamu Update LSC insane REFL165 DC output I found that the DC monitor of the REFL165 was showing 9 V regardless of how much laser      6284   Thu Feb 16 03:47:16 2012 kiwamu Update LSC glitch table I updated the table which I posted some time ago (#6231). The latest table is shown below.      6283   Wed Feb 15 17:15:33 2012 kiwamu Update LSC sensing matrix of PRMI I think I have told a lie in the last meeting -- the measured sensing matrix doesn't look      6282   Wed Feb 15 11:34:01 2012 steve Update   under the shouth end optical table I added an U channel based bottom shelf at the south end today.      6281   Wed Feb 15 05:29:22 2012 kiwamu Update LSC sensing matrix of PRMI I have measured the sensing matrix of PRMI. It seems that the MICH signal in the 3f ports      6280   Tue Feb 14 17:09:05 2012 steve Update General reflectivity of green welding glass  Schott, Athermal green welding glass, shade #14 reflectivity was measured in 1.2W,  ~1 mm diameter  beam of MC reflected.      6279   Tue Feb 14 15:52:11 2012 Jenne Update Auxiliary locking Yarm fiber returned to ATF [Frank, Jenne] We extracted the fiber that Suresh and Sonali laid over the summer, for the      6278   Tue Feb 14 08:22:27 2012 steve Update SUS sus damping restored ITMX, PRM and BS watchdogs are tripped. They were restored. Stable MC was disabled so I can use      6277   Mon Feb 13 12:02:17 2012 Koji Update PEM seismic BLRMS loud too I reported the procedure to add slow channels to the FB. I guess you already have done Step.1      6276   Mon Feb 13 11:30:51 2012 Jenne Update PEM seismic BLRMS loud too                    6275   Fri Feb 10 23:58:30 2012 rana Update PEM seismic BLRMS loud too                                6274   Fri Feb 10 23:19:09 2012 kiwamu Update IOO cross talk causing fake seimometer signals [ Koji / Kiwamu ] The      6273   Fri Feb 10 15:54:27 2012 steve Update PEM AC turned back ON The air cond was off for 2 hrs.  I just switched it back on at 15:51      6272   Fri Feb 10 15:52:35 2012 Jenne Update PEM seismic BLRMS loud too                                6271   Fri Feb 10 15:47:38 2012 rana Update PEM seismic noise back to normal    Kiwamu and Steve maybe don't know about how to trend seismic noise. If      6270   Fri Feb 10 15:46:59 2012 steve Update SUS ruby wire standoff Finally I found a company who can do Koji's improved  -hard to make-  specification on ruby or sapphire wire standoff.      6269   Fri Feb 10 11:46:44 2012 steve Update IOO seismic noise back to normal The shaking has stopped at 9:32am  The AC was turned back on at 11:30am  We still do not have any explanation      6268   Fri Feb 10 11:01:31 2012 steve Update IOO crazy ground motion                                6267   Fri Feb 10 02:43:37 2012 Zach Update SUS OSEM LED driver noise *reduced* I worked on the OSEM box a little more today, with the hopes of reducing the measured output current noise.       6266   Fri Feb 10 02:35:29 2012 kiwamu Update IOO crazy ground motion I gave up tonight's locking activity because the MC can't stay locked.      6265   Thu Feb 9 20:01:02 2012 rana Summary Electronics Using RF LP filters as dispersion units for the MFD  WE currently use long cables to give us the dispersion that we want for the MFD. A cable gives a long delay - both the phase      6264   Thu Feb 9 17:11:05 2012 steve Update SUS more OSEM problems These observations of the OSEMs  were taken while taking transfer functions of oplev YAW at excitation amplitude 0.1      6263   Thu Feb 9 16:46:02 2012 steve Update SUS ALL oplev YAW transfer functions                            7x    6262   Thu Feb 9 13:04:11 2012 Koji Summary IOO PMC/IMC alignment There has been no lock of input MC for more than 5days. WTF???      6261   Thu Feb 9 12:38:15 2012 Zach Update SUS OSEM LED driver noise Frank pointed out to me that I had dumbly forgotten to include the voltage reference's      6260   Wed Feb 8 16:37:02 2012 steve Update SUS ITMX OSEM LL is sick I'm driving C1:SUS-ITMX_OLYAW and PIT_EXC with amplitude 0,1-0.3 while taking transfer funtions of oplev.      6259   Tue Feb 7 16:30:46 2012 steve Update SUS ALL oplev PIT transfer functions SUS- BS, ITMX, ITMY, PRM, SRM, ETMX & ETMY_OLPIT transfer funtion with sine wave excitation 0.1 amplitude:  7x    6258   Tue Feb 7 03:05:08 2012 Zach Update SUS OSEM sat amp measurements I did some more investigation on the      6257   Mon Feb 6 17:06:11 2012 steve Update SUS oplev transferfunction of PIT: ETMY & ETMX Kiwamu showed me how to do transferfunction of oplev pitch      6256   Mon Feb 6 11:07:21 2012 steve Update SUS Oplev QPD Sum Trends are suspicious                                6255   Fri Feb 3 23:19:22 2012 Zach Update SUS OSEM testing begins I took one of the spare OSEM satellite      6254   Fri Feb 3 20:58:56 2012 Steve Configuration General Illuminator Picture        6253   Fri Feb 3 20:19:38 2012 rana Update SUS Oplev QPD Sum Trends are suspicious The attached trend shows a problem with the QPD sums. Why are ETMX      6252   Fri Feb 3 19:57:26 2012 rana Configuration SUS PSL Shutter closed for SUS hysteresis test Fri Feb 03 19:57:20 2012 Fri Feb 03 20:25:19 2012 :   Aligned all SUS to center their OL beams      6251   Fri Feb 3 19:54:21 2012 rana Configuration IOO MC trans awry As usual, I noticed several bad things within 30 seconds of sitting in front of the workstation. Today its that there are      6250   Fri Feb 3 17:31:09 2012 steve Update General green welding glass Schott, green welding glass, shade 14, 3 mm thick  was measured in the beam path of 1.2W, S polarization of 1064nm at

Goto page Previous  1, 2, 3 ... 229, 230, 231 ... 353, 354, 355   Next

ELOG V3.1.3-