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Entry  Wed Apr 1 17:33:08 2015, Aidan, DailyProgress, PMC, Laser out of alignment to PMC 
    Reply  Sat Apr 4 18:15:39 2015, rana, DailyProgress, PMC, Beware the Bow-Tie 
Message ID: 1544     Entry time: Sat Apr 4 18:15:39 2015     In reply to: 1543
Author: rana 
Type: DailyProgress 
Category: PMC 
Subject: Beware the Bow-Tie 

Recall the horrible sadaftermath of using the bow-tie configurationno for the green laser ALS setup at the 40m:angry

All of the supposedly HR mirrors leaked through enough lightcrying to make the table into a Christmas tree. The bow-tie should only be allowed when using the super HR mirrors from G&H which have T < 100 ppm over a wide range of angles.cheeky

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