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 Jun 14 21:37:37 2012, yuta, Update, Green Locking, succeeded in 1FSR mode scan YarmScan20120614.png
    Reply  Fri Jun 15 00:50:54 2012, yuta, Update, Green Locking, scanned Y arm for 5FSR YarmScan20120614_2.png
       Reply  Fri Jun 15 01:53:05 2012, Koji, Update, Green Locking, scanned Y arm for 5FSR 
          Reply  Sat Jun 16 12:03:41 2012, Zach, Update, Green Locking, scanned Y arm for 5FSR 
             Reply  Sat Jun 16 13:01:17 2012, yuta, Update, Green Locking, scanned Y arm for 5FSR YarmScanDV.png
       Reply  Sat Jun 16 18:17:00 2012, yuta, Update, Green Locking, Y arm length using 5FSR scan ALS-BEATY_COARSE_I_IN1_DQ.pngCalibYarmScan20120614_2.png
          Reply  Sat Jun 16 18:51:44 2012, Koji, Update, Green Locking, Y arm length using 5FSR scan 
             Reply  Sat Jun 16 19:32:11 2012, yuta, Update, Green Locking, Y arm length using 5FSR scan 
Message ID: 6826     Entry time: Sat Jun 16 18:51:44 2012     In reply to: 6825     Reply to this: 6827
Author: Koji 
Type: Update 
Category: Green Locking 
Subject: Y arm length using 5FSR scan 

Quote:

Calibrating beat frequency to Y arm length change;
  I used L = 32.36 m (figure above, bottom plot).
    dnu_g / dL = c / lamb_g / L = 1.74 MHz/m

Wow. This is way too short.

You don't need to use Albertoo's arm length as his measurement was done before the upgrade.

ELOG V3.1.3-