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ID Date Author Type Category Subject Text   326   Wed Feb 20 16:24:37 2008 steve Update PSL the laser is recovering slowly Head temp is still 20.5C and decreasing slowly. Power output 2.9W  NPRO power 22 mW is increasing as head is      327   Thu Feb 21 09:56:26 2008 steve Update PSL the laser is back The laser and the psl recovered.  The water chiller temp is 19.98C and head temp 18.4C      335   Fri Feb 22 14:45:06 2008 steve Update MOPA laser power levels At the beginning of this 1000 days plot shows the laser that was running at 22C head temp      351   Mon Mar 3 09:25:33 2008 steve Update VAC rga scan logging is working now [quote][quote]The rga head and controller are running fine, but the data logging is not.[/quote]      352   Mon Mar 3 13:58:10 2008 steve Update Computers RFM Network are down The CODAQ_RFNETWORK are down, except C1SUSVME & AWG      365   Fri Mar 7 19:04:39 2008 steve Omnistructure PSL laser pointer Green laser pointer was found in my desk. I blamed Rana for not returning it to me after a conference talk.      385   Thu Mar 20 15:28:20 2008 steve Update VAC tp2 's drypump replaced The fore pump of tp2 was replaced at fore line pressure 998m Torr      388   Fri Mar 21 09:02:03 2008 steve Update VAC tp 2 failed Small turbo #2 is the forepump of the maglev. It failed last night, shut down the  maglev and interlock closed V1      409   Wed Apr 2 15:03:51 2008 steve Update General reflectivity of black glass The reflectivity of black glass, shade 12 was supplied by Donald O'Shea of Emerald Glass Inc., Westlake, OH 44145      417   Mon Apr 7 18:58:49 2008 steve Update General reflectivity of SS304 The reflectivity of stainless steel 304 super polished # 8 was measured the same way as elog entry 409      418   Tue Apr 8 09:08:54 2008 steve Configuration PEM weather station disconnected We can not leave cables in the walkways and go on vacation. I disconnected the weather station from the      423   Thu Apr 17 15:00:59 2008 steve Update VAC vac controller computer to be replaced Now that Rosalba is up and running someone should step forward to volunteer for this job.      443   Thu Apr 24 15:57:53 2008 steve Configuration SAFETY Safety at AP-ISCT I measured the output power of the psl after the mechanical shutter.      450   Fri Apr 25 15:44:21 2008 steve Update PSL scattering measurments In pursuit of a low back scattering, high power beam dump we looked at materials such: polished copper, polished aluminum, diamond  6x    462   Thu May 1 08:31:51 2008 steve Update SUS earthquake trips etmy & mc1 Earthquake at Lake Isabel magnitude 4.4 at 1am today shakes the 40m ETMY and MC1 watchdogs tripped.      465   Mon May 5 15:53:14 2008 steve Update VAC drypump replaced & readbacks are out The small turbo pump of the annulus system is tp3 It's drypump was replaced at 1.4 Torr after      472   Fri May 9 08:40:24 2008 steve Update SUS ETMY sus damping restored ETMY lost damping at 19:10 last night. There was no seismic event than. Sus damping was restored this morning.       474   Tue May 13 10:15:52 2008 steve Update SUS restored damping of BS & PRM I think our janitor was cleaning too heavy handedly. The BS and PRM sus damping were lost.      475   Tue May 13 10:38:28 2008 steve Update Computers rfm network is down The RFM network went down yesterday around 5pm Only c1susvme1 is alive but it's timing is      478   Thu May 15 10:40:21 2008 steve HowTo General Lisa Goggin, PhD Lisa Goggin successfully defended her thesis on May, 13 2008      487   Mon May 19 11:49:57 2008 steve Update SUS etmy oplev laser replaced The 9 years old Uniphase HeNe was replaced by a new JDSU 1103P Power output ~3.5 mW, reflected light back      488   Tue May 20 09:28:42 2008 steve Bureaucracy SAFETY safety traning for 40m Tara Chalernsongsak, new gradstudent for K. Libbrecht was introduced to the basics of the 40m operations.      491   Thu May 22 11:21:45 2008 steve Bureaucracy SAFETY early surf sudent Caltech under grad Eric Mintun received the 40m safety training. Now he has to read and sign SOP of laser      502   Wed May 28 14:19:47 2008 steve Update PSL kaleidoscope of psl atm 1: scattering psl table optics from the top of the output periscope f4, 60s @MOPA 3 W      504   Thu May 29 16:32:09 2008 steve Update SUS etmy oplev is back I relayed the optics for ETMY-oplev as shown in pictures below. The reflected beam goes directly to the qpd      505   Thu May 29 16:49:49 2008 steve Bureaucracy Photos Yoichi has arrived Yoichi had his first 40m meeting. We welcomed him and Tobin, who is visiting, by sugar napoleons that       516   Wed Jun 4 10:18:52 2008 steve Update PSL wedged SS beam trap I moved the SS trap over to the psl table. Texas super # 8 was used from the large shipment. TXs#8 scattering measured as before, meaning      523   Fri Jun 6 15:56:00 2008 steve Bureaucracy SAFETY Yoichi received safety training Yoichi Aso received 40m specific safety training.      524   Fri Jun 6 16:10:51 2008 steve Update PSL HEPA filters are running at 100% The psl HEPA filters were turned up to run at 100% to accommodate beam trap work on Tuesday, June 3, 2008      528   Tue Jun 10 08:37:18 2008 steve Update PSL beam trap is being tested High power beam trap is being tested just west of FSS area on psl enclosure.      529   Wed Jun 11 11:45:25 2008 steve Update PSL ss trap works The trap works well at 3 W level.  No back reflected beam coming out of the trap on low power      550   Fri Jun 20 17:42:48 2008 steve Update PSL SS trap scattering compared to black glass trap Circular SS304 trap was compared to wedged black glass trap.      581   Fri Jun 27 09:20:15 2008 steve Frogs PEM dust particle count is up & alarm handler is on This 3 years plot show the trend of seasons. When outside air quality goes bad ( 0.5 micron > 1 million ) the lab follows.      600   Mon Jun 30 08:59:23 2008 steve Update IOO IOO-MC_DEMOD_LO is low The alarm handler is beeping relentlessly: asking for help in high partical count and low demod signal      608   Tue Jul 1 09:26:33 2008 steve Update Computers RFM network is down        609   Tue Jul 1 10:15:22 2008 steve Update PSL eventfull two days The laser recovered from a short temp rise. The MZ was aligned and realigned. The suspentions were kicked up accidentally.       624   Wed Jul 2 15:14:42 2008 steve Update General added beam traps I placed baked razor beam trap after INJ_SM1 and flipper in the injection path on the AP table      642   Mon Jul 7 16:30:08 2008 steve Update PSL PSL-PEM 16 days trend This morning the laser head temp was up to 20.3C  because the laser chiller was overflowing. I removed 700 cc water.       645   Tue Jul 8 08:16:56 2008 steve Update PSL PMC problem The PMC is unhappy. PMC auto locker is not working. DC output slider adjust has to be moved from      646   Tue Jul 8 10:20:10 2008 steve Update PEM HEPA turned on It is specially important to run the PSL-HEPA filters when inside counts is peaking at 30,000 counts      652   Wed Jul 9 15:04:22 2008 steve Metaphysics Photos SURFs helping hands Surf students are helping out with baffle cleaning.      659   Fri Jul 11 09:29:02 2008 steve Update PSL the PMC still hangs up Morning alarms: PMC high voltage is railing, it's auto locker      670   Tue Jul 15 09:47:09 2008 steve Update PEM lab temps and particles All air condtion units were serviced last Friday. AC filters are trying to control our particle      672   Tue Jul 15 10:24:57 2008 steve Update PSL PMC temp & pzt voltage The PMC pzt HV was happy with no HEPA temp stability. Can we thermally insulate the pmc ?      677   Wed Jul 16 09:27:17 2008 steve Update ALARM PSL-FSS_RMTEMP alarm is false Morning alarm sound is good for people who does not drink coffee. Our 40m alarm is on every morning.      688   Thu Jul 17 08:30:15 2008 steve Update PSL PMC relocked manually The PMC pzt HV and the servo gain adj. are railing at max this morning      705   Mon Jul 21 10:00:42 2008 steve Update PEM ifo room temp Five years of temp trend with 5 C fluctuation. The campus chilled water supply was upgraded ~ 1 year ago.      708   Mon Jul 21 15:52:22 2008 steve Bureaucracy SAFETY fire alarms test The fire alarm test and evacuation drill was successfully completed at 13:45 Wednesday, July 16, 2008      712   Tue Jul 22 09:24:17 2008 steve Update PSL laser power Laser power reality of 120 days      716   Tue Jul 22 16:50:09 2008 steve Metaphysics Environment professorial clean up of work bench Atm1: is showing the spiritual satisfaction after work bench clean up by the professor himself.

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