40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Thu Jul 15 12:21:08 2010, Alberto, Configuration, LSC, PRC and SRC length adjustements 8x
    Reply  Thu Jul 15 15:57:10 2010, Koji, Configuration, LSC, PRC and SRC length adjustements 
       Reply  Thu Jul 15 16:16:51 2010, Alberto, Configuration, LSC, PRC and SRC length adjustements 
Message ID: 3229     Entry time: Thu Jul 15 16:16:51 2010     In reply to: 3228
Author: Alberto 
Type: Configuration 
Category: LSC 
Subject: PRC and SRC length adjustements 

Quote:

Tell me whether it is correct or not. Otherwise I won't be able to sleep tonight.

Quote:

According to these results, these would be the proposed adjustements to the cavity lengths:
dl(PRC) = -0.0266 m; dl(SRC) = 0.612 m

 Sorry. I was in a rush to go to the LIGO "all hands" meetings when I posted that elog entry, that I forgot a zero in the SRC length value. The correct values are:

dl(PRC) = -0.0266 m; dl(SRC) = 0.0612 m

The cavity absolute lengths are then:

L(PRC) = 0.5/2/f1*c - 0.0266 = 6.7466 m

L(SRC) = c/f2 + 0.0612 = 5.4798 m

where c is the speed of light; f1 = 11065399 Hz; f2 = 55326995 Hz

ELOG V3.1.3-