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
 List  |  Find  |  Login  |  Help 
Entry  Mon Mar 5 18:12:00 2012, Keiko, Update, LSC, RAM simulation update Mar5RAM2.pngMar5RAM3.png
    Reply  Tue Mar 6 15:22:02 2012, Keiko, Update, LSC, RAM simulation update 
Message ID: 6363     Entry time: Tue Mar 6 15:22:02 2012     In reply to: 6358
Author: Keiko 
Type: Update 
Category: LSC 
Subject: RAM simulation update 

Quote:

 I wrote an RAM simulation script ... it calculates the LSC signal offset and the operation point offset depending on the RAM modulation index.

Configuration : RAM is added on optC1, by the additional Mach-Zehnder ifo before the PRM.

Mar5RAM3.pngMar5RAM2.png

 Both are for PRCL sweep result. Note that REFL33I is always almost zero. Next step: Check the LSC matrix with matrix at the offset operation point.

 On the right figure, you see the non-zero operation points even when RAM mod index = 0. Apparently they come from non-zero loss of the model.  (Each mirror of 50ppm loss was assumed).

ELOG V3.1.3-