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Entry  Thu Sep 6 19:21:58 2012, Manasa, Configuration, 40m Upgrading, Baffle problem bfl.png
    Reply  Fri Sep 7 11:58:12 2012, Manasa, Configuration, 40m Upgrading, Baffle problem bfl.png
       Reply  Fri Sep 7 13:01:53 2012, Manasa, Configuration, 40m Upgrading, Baffle problem Picture1.png
Message ID: 7359     Entry time: Fri Sep 7 11:58:12 2012     In reply to: 7354     Reply to this: 7361
Author: Manasa 
Type: Configuration 
Category: 40m Upgrading 
Subject: Baffle problem 

Quote:

The required diameter for the baffle if it sits on the cage at 1.77" from the test masses: the current baffle (dia. 40mm) centered along the beamline, will allow ~8.6mm visibility from the center of the test mass (in case of ETMY).

*assuming the pick off mirror is placed at the edge of the tunnel

Estimations of the visibility region (r1 on the test mass) with baffle (aperture size 40mm).

The baffle is installed on the cage at 1.125" from the test mass (distance changed from the previous elog after a double check).

The 40mm aperture is in no way going to help get clear view of the ITMs; 

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