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ID Date Author Type Category Subject Text   5907   Wed Nov 16 10:11:20 2011 steve Update PSL IOO angle & pos qpd centered                                5909   Wed Nov 16 10:25:57 2011 steve Update SUS PRM damping restored The  PRM lost damping about a day ago. It was restored.      5912   Wed Nov 16 14:34:18 2011 steve Update PSL IOO beam moves in pitch C1:IOO-QPD_ANG_VERT beam movement  in 1 degree C temp change in 3 hrs        5927   Thu Nov 17 15:19:06 2011 steve Update SUS Ti spring plunger to hold OSEM is not affortable Our existing 300 series SS plungers from McMastercar #8476A43 are silver plated as Atm2 shows.      5950   Fri Nov 18 16:37:14 2011 steve Update VAC preparing for ac power interruption The vacuum is ready for no AC power for 1 hr on Sunday morning at 10am        5962   Sun Nov 20 13:51:54 2011 steve Update VAC vacuum is back up after ac interruption State condition: Vac Normal,          CC1 ~8e-6 Torr The IFO pressure peaked at       6025   Mon Nov 28 15:43:36 2011 steve Update RF System EOM temp zoomed                                6036   Tue Nov 29 15:25:29 2011 steve Update RF System EOM temp stabilization performance  It is not obvious what is working.        6058   Thu Dec 1 11:25:10 2011 steve Update PEM 40m infrastructure holds up well in strong wind condition  Santa Anna wind speed was locked around 60 kmph last night on campus. The strongest in 30 years.  The lab hold      6120   Wed Dec 14 14:40:53 2011 steve Update Green Locking delay line bnc cable specs The existingly used used Pasternack Enterprices RG58 C/U cable lenght ~ 140 ft and the specs are here at Atm1      6139   Tue Dec 20 15:49:21 2011 steve Update PEM optical table top 3/4 " thick colored acrylic material will be used in this air tight design. Surgical tubing for o-ring. We may have to put an      6168   Wed Jan 4 09:06:50 2012 steve Update Computers possible front-end timing issue                                6172   Thu Jan 5 09:08:48 2012 steve Update General framebuilder is back Dataviewer is recovered after heavy new year party.      6180   Mon Jan 9 08:47:35 2012 steve Update SUS ETMX damping restored ETMX sus damping restored      6184   Tue Jan 10 09:17:23 2012 steve Update Photos strawman's visiters        6188   Thu Jan 12 07:44:21 2012 steve Update SUS sapphire wire standoff quote On Tue, Dec 20, 2011 at 11:37 PM, Rana Adhikari wrote:      6190   Thu Jan 12 10:11:59 2012 steve Update PEM optical table top with 1" wall                                6210   Wed Jan 18 12:38:44 2012 steve Update PEM Acrylic plexiglass transmittance        6223   Wed Jan 25 17:32:03 2012 steve Update Green Locking geen pointing into y arm is misaligned I  placed an other Y2-LW-1-2050-UV-45P/AR steering mirror into the beam path of the green beam launching in order to avoid the      6226   Thu Jan 26 08:36:38 2012 steve Update SAFETY evacuation drill It started with fire alarm test yesterday at 14:50 All alarms are  functioning VERY loud and their flashers are bright.      6227   Thu Jan 26 10:17:01 2012 steve Update Green Locking geen pointing into y arm is realigned                                6232   Fri Jan 27 09:05:41 2012 steve Update SUS OSEM locking plunger                                6236   Mon Jan 30 08:17:06 2012 steve Update IOO PMC                                6237   Mon Jan 30 16:18:51 2012 steve Update PEM Roscolux colored film transmittance at 1064 nm    Roscolux filter films  #74 night blue,  0.003" thick       6239   Tue Jan 31 08:44:10 2012 steve Update IOO laser shuts down    The 2W Innilight shutdown shut when I opened side door for safety scan.      6241   Tue Jan 31 17:13:49 2012 steve Update IOO only the PSL laser is off   The 2W PSL laser is turned off.       6242   Wed Feb 1 17:00:57 2012 steve Update IOO laser is back ON                                6245   Fri Feb 3 14:47:51 2012 steve Update PEM laser interlock drawing  Rough draft of      updated interlock drawing by Ben is here.      6247   Fri Feb 3 16:13:49 2012 steve Update PEM LED lights for chamber illumination Cold LED lights replaced hot halogen ones. Flat LED MYAL 6S,  model #112560002       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      6256   Mon Feb 6 11:07:21 2012 steve Update SUS Oplev QPD Sum Trends are suspicious                                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      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    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.      6263   Thu Feb 9 16:46:02 2012 steve Update SUS ALL oplev YAW transfer functions                            7x    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      6268   Fri Feb 10 11:01:31 2012 steve Update IOO crazy ground motion                                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      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.      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      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      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.      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.      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      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"      6308   Thu Feb 23 09:09:33 2012 steve Update SAFETY safety checks Emergency exit lights were inspected:  2 out of 13 batteries have to be replaced One of the Halon fire extinguishers      6309   Thu Feb 23 10:53:54 2012 steve Update SUS oplev PIT transfer functions  Oplev transfer functions PIT UGF were optimized to be at 2-3 Hz with 60 degree minimum phase margin by adjuting oplev gains.      6312   Fri Feb 24 08:06:52 2012 steve Update SUS sus restored                                6322   Mon Feb 27 10:21:37 2012 steve Update SAFETY safety audit tomorrow morning                                6323   Mon Feb 27 14:35:22 2012 steve Update SUS oplev YAW transfer functions  The BS and the PRM have 3.3 Hz resonant gain filters that kill the phase margins.

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