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Message ID: 15357     Entry time: Tue May 26 19:19:30 2020
Author: Hang 
Type: Update 
Category: BHD 
Subject: BHD MM-- effects of astigmatism 

Please see the attached doc. 

I think the conclusion is that if the AS1 RoC error is not significantly more than 1%, then with some adjustment of the AS1-AS3 distance (~ 1 cm), we could find a solution that simultaneously makes the AS path mode-matching better than 99% for the t- and s-planes. 

The requirement of the LO path is less strict and the current plan using LO1-LO2 actuation should work. 

Attachment 1: MM.pdf  2.734 MB  Uploaded Tue May 26 20:24:41 2020  | Hide | Hide all
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