40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 344 of 344  Not logged in ELOG logo
New entries since:Wed Dec 31 16:00:00 1969
ID Date Authorup Type Category Subject Text Attachments
  11857   Mon Dec 7 11:11:25 2015 yutaroSummaryLSCround trip loss of X armOn the day before yesterday and in this
morning, I measured loss map of ETMX. I reported
the method I used to change the beam spot
 image1-2.JPGsymmetry.png 
  11860   Mon Dec 7 15:56:35 2015 yutaroUpdateLSCXARM lock with ITMX actuated and related change on ASSI changed the snapshot file for ASS, /opt/rtcds/caltech/c1/scripts/ASS_DITHER_ON.snap
as follows:
  
  11861   Tue Dec 8 11:24:45 2015 yutaroSummaryComputer Scripts / ProgramsScripts for loss map measurementHere I explain usage of my scripts
for loss map measurement. There are 7 script
files in a same directory /opt/rtcds/caltech/c1/scripts/lossmap_scripts. With
  
  11864   Tue Dec 8 15:57:16 2015 yutaroSummaryLSCPower recycling gain estimation from arm loss measurementI estimated power recycling gain with the
results of arm loss measurement.

From elog
  
  11870   Thu Dec 10 12:33:04 2015 yutaroUpdateLSCstrange behavior of ASDCI did additional tests for the strange
behavior of ASCD. ETMY, ETMX and ITMY were
misaligned so that only light reflected by
 07.png28.pngASDC.png 
  11871   Thu Dec 10 19:53:22 2015 yutaroUpdateLSCstrange behavior of ASDCTo check if the strange behavior of ASDC
is caused by SR2/SR3 or not, I did the following
measurement:
 30.png11.png49.png 
  11872   Fri Dec 11 09:35:44 2015 yutaroUpdateLSCPower recycling gain estimation from arm loss measurementI took PR3 AR reflectivity and calculated
PRG (PR3 is flipped and so AR surface is
inside PRC).
 LaserOptikAR.png 
  11874   Fri Dec 11 15:37:50 2015 yutaroUpdateLSCPower recycling gain estimation from arm loss measurementAttached is the plot of relation between
the average arm round trip loss and
power recycling gain. 2 % loss due to PR3
 PRG_plot.png 
  11875   Fri Dec 11 16:16:36 2015 yutaroUpdateOptical LeversCalibration of oplevs for ITMX/ETMXBased on calibration measurement I have
done (elog
11785, 11831), I
  
ELOG V3.1.3-