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ID Date Author Type Categorydown Subject Text Attachments
  13570   Tue Jan 23 16:02:05 2018 SteveConfigurationSEIload cells1500 and 2000 lbs load cells arrived from
MIT to measure the vertical loads on each
leg.
 stacis3LoadCells.pngDSC00025.JPGDSC00026.JPG 
  13631   Tue Feb 13 21:22:44 2018 SteveUpdateSEIone load cells testedGautam and Steve,

The "called 225 lbs"
steel crane load measured right on 102 kg
 as_measured_102kg.jpgsensor.jpg1500lbs_load__cell.jpg 
  13806   Wed May 2 10:03:58 2018 SteveHowToSEIpreparation of load cell measurement at ETMXGautam and Steve,

We have calibrated the load 
cells. The support beams height monitoring
 6x 
  13809   Thu May 3 09:56:42 2018 SteveHowToSEIpreparation of load cell measurement at ETMX[ Dennis Coyne'  precision answer
]

  
  13840   Mon May 14 08:55:40 2018 Dennis CoyneHowToSEIpreparation of load cell measurement at ETMXfollow
up email from Dennis 5-13-2018.
  
  16783   Mon Apr 18 14:52:47 2022 Ian MacMillanSummarySEISeismic Study of Buildings and Caltech Campus[Ian, JC]

I want to take measurements of
seismic noise at different places on Caltech's
 7x 
  16798   Thu Apr 21 17:32:35 2022 Ian MacMillanSummarySEISeismic Study of Buildings and Caltech Campus[Rana, Ian]

We built a power supply for the
accelerometer shown in Attachment 1 based
 IMG_1820.jpgScreen_Shot_2022-04-21_at_5.52.51_PM.png 
  17211   Tue Oct 25 14:29:56 2022 PacoSummarySEIEarthquake tripped SUS[Yuta, Paco, JC]

This
eq  potentially tripped ETMY, PR2,
  
  57   Fri Nov 2 08:59:30 2007 steveBureaucracySAFETYthe laser is ONThe psl laser is back on !   
  115   Mon Nov 19 14:32:10 2007 steveBureaucracySAFETYgrad student safety trainingJohn Miller and Alberto Stochino has received
the 40m safety bible.
 They still have to read the laser operation
  
  196   Tue Dec 18 16:50:35 2007 tobinUpdateSAFETYuvex laser safety glasses defectiveA few days ago we noticed what appeared to
be a blotched, speckled fracturing of the
coating of the "UVEX" laser safety glasses.
 bad-glasses.jpgbad-glasses-zoom.jpg 
  203   Wed Dec 19 16:40:12 2007 steveUpdateSAFETYlaser safety glasses measuredI measured the coarse transission at 1064nm
 of the 40m safety glasses today.
  
  443   Thu Apr 24 15:57:53 2008 steveConfigurationSAFETYSafety at AP-ISCTI measured the output power of the psl after
the mechanical shutter.
 P1020197.JPGmcrefl3.JPG 
  488   Tue May 20 09:28:42 2008 steveBureaucracySAFETYsafety traning for 40mTara Chalernsongsak, new gradstudent for K.
Libbrecht was introduced to the basics of
the 40m operations.
  
  491   Thu May 22 11:21:45 2008 steveBureaucracySAFETYearly surf sudentCaltech under grad Eric Mintun received the
40m safety training.
Now he has to read and sign SOP of laser
  
  523   Fri Jun 6 15:56:00 2008 steveBureaucracySAFETYYoichi received safety trainingYoichi Aso received 40m specific safety training.   
  539   Wed Jun 18 16:37:54 2008 steve,ranaUpdateSAFETYCO2 test in the east armThe CO2 laser and table are in the east arm
for characterization of the mechanics. We
will not be operating it until we have an
 co2.png 
  552   Mon Jun 23 15:22:04 2008 ranaBureaucracySAFETYLaser Safety Walkthrough today   Walkthrough08.jpg 
  708   Mon Jul 21 15:52:22 2008 steveBureaucracySAFETYfire alarms testThe fire alarm test and evacuation drill was
successfully completed at 13:45 Wednesday,
July 16, 2008
  
  840   Fri Aug 15 14:12:31 2008 steveBureaucracySAFETYsafety glasses required The MOPA shutter is opened,
the PSL enclosure is switched to bypass mode,
manual block removed from PMC,
  
  865   Thu Aug 21 10:24:20 2008 steveConfigurationSAFETYlaser safe mode conditionThe MOPA and PSL shutters are closed.
Manual beam blocks are in place.
Enclosure interlock is enabled.
  
  866   Thu Aug 21 16:28:59 2008 steveConfigurationSAFETYsafety glasses required I just opened the MOPA shutter so PA is warming
up.
  
  942   Thu Sep 11 14:27:53 2008 steveBureaucracySAFETYsafety trainingPeter Kalmus received 40m specific safety
training last week.
  
  1004   Mon Sep 29 11:17:14 2008 steveUpdateSAFETYhorizontal viewports are protected with lexanThe four horizontal viewports of arms are
protected 
by 3/8" thick, 8.5" OD Lexan disk of MR10
  
  1068   Wed Oct 22 16:22:53 2008 steveBureaucracySAFETYCaryn received safety trainingCaryn Polatchi has received 40m safety training
on Monday, Oct 20
  
  1082   Fri Oct 24 11:09:08 2008 steveUpdateSAFETYmore lexan plates under camerasThe MC2, MC3&1 and BSC-SUS cameras were repositioned
somewhat in the 
process of placing lexan disks under neat
  
  1123   Fri Nov 7 16:05:55 2008 steveBureaucracySAFETYinsect killer sprayed at kitchen area !
Bob and I cleaned out the sink area and sprayed
Spectracide's BUG STOP insect killer solution
  
  1243   Thu Jan 22 08:34:10 2009 steveBureaucracySAFETYsafety trainingKakeru received 40m safety training yesterday.

He has no authorization to work alone in
  
  1273   Thu Feb 5 09:12:29 2009 steveBureaucracySAFETYsafety updates & fire alarm testThe fire alarm test was completed at 13:30
yesterday.
 
  
  1280   Fri Feb 6 14:49:31 2009 steveSummarySAFETYlaser inventory
40M Laser Inventory at Feb 05,
2009
 

1, Lightwave PA#102 @ 77,910
  
  1288   Tue Feb 10 10:48:48 2009 steveBureaucracySAFETYsafety glasses scannedAll 40m safety glasses are absorbent.
 
They
were scanned by 180 mW  2mm spot size 
of 1064 nm beam and  their  transmissions
 sgscan1.pngsgscan2.png 
  1319   Wed Feb 18 15:31:38 2009 steveBureaucracySAFETYemergency back-up lights checkedAll
13 exit and  emergency back-up lights
and their batteries were checked.
  
  1332   Mon Feb 23 11:07:01 2009 steveBureaucracySAFETYKiwamu receives safety trainingOsamu and Kiwamu received 40m safety training
on Thursday, Feb 19, 2009
Kiwamu needs Osamu's close supervision
  
  1700   Wed Jun 24 17:08:16 2009 steveBureaucracySAFETYsurf student safetyThe 40m lab specific safety training is
done. The participants were
Stephanie Erickson, Clara Bennett,
  
  1802   Wed Jul 29 11:15:06 2009 steveBureaucracySAFETYKevin receives safety trainingKevin Vigue, our high school summer student
went through the 40m specific safety traning
yesterday.
  
  2015   Mon Sep 28 23:44:18 2009 KojiOmnistructureSAFETYCrappy power outletJenne, Koji
Tonight we found that the wireless
for Martian network was down. 
  
  2082   Mon Oct 12 17:27:20 2009 KojiConfigurationSAFETYStray beam blockingSteve, Kiwamu, and Koji
We went through the PSL table to
make sure any strong beam did not hit the
 PSL.png 
  2084   Mon Oct 12 18:38:07 2009 JenneConfigurationSAFETYStray beam blocking


   
        
            
  
  2085   Mon Oct 12 19:53:44 2009 KojiConfigurationSAFETYStray beam blockingI aligned the EOM and the beam to the PMC.
The beam is still hitting the bottom of the
EOM aperture, 
  
  2087   Mon Oct 12 20:01:13 2009 KojiConfigurationSAFETYStray beam blockingOK! I saw the optics are redundant and
some of the components are not in a right
place.
  
  2115   Mon Oct 19 11:00:52 2009 steveHowToSAFETY40m safety trainingKiwamu, Alex and Zach are practicing mandatory
IR-safety scan at the 40m-PSL
40m specific safety indoctrination
 safety_10_2009.JPG 
  2130   Wed Oct 21 16:18:12 2009 SteveSummarySAFETYLIGO Safety Officers visited the 40m David Nolting, chief LIGO Safety Officer
and his lieutenants from LLO and LHO paid
homage to the 40m lab this morning.
  
  2482   Wed Jan 6 16:48:52 2010 steveBureaucracySAFETYcopied NPRO keyWe lost our key to the Lightwave 125/6-OPN-PS  
The key shop just made one look a like that
works.
 nprokey.JPG 
  2647   Mon Mar 1 08:49:37 2010 steveBureaucracySAFETYsafety auditThe 40m safety audit will be at Wednesday
afternoon, March 3
Please participate getting our lab
  
  2716   Fri Mar 26 10:48:35 2010 steveUpdateSAFETYsafety glasses measuredSafety
glasses 1064 nm transmission measured at
~200 mW level. They are all good.
 P1060188.JPGP1060199.JPG 
  2814   Tue Apr 20 09:15:15 2010 steveSummarySAFETYannual safety audit   safa.PDF 
  2815   Tue Apr 20 10:55:10 2010 steveBureaucracySAFETYKevin Kuns received safety training The 40m's new undergrad Kevin Kuns was
introduced to 40m safety hazards. He is new
and needs guidance as specially with 2W laser
  
  2943   Tue May 18 11:54:29 2010 steveConfigurationSAFETYpsl mechanical shutter is not workingAs we learned yesterday, the PSL laser
power out put mechanical shutter is not working
in the remote mode. It only works in local
  
  2947   Tue May 18 15:09:02 2010 steveConfigurationSAFETYPSL output shutter in order again


   
        
            
  
  2961   Thu May 20 20:03:37 2010 JenneUpdateSAFETYDon't walk down the Y(new convention) arm tonight!Please don't go
down the Yarm (Old Xarm) for right now, or
  
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