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Entry  Tue Apr 13 15:32:51 2010, Koji, Laser, Doubling, Both MZ and ISS locked 
    Reply  Wed Apr 14 16:00:56 2010, Dmass, Laser, Doubling, Both MZ and ISS locked 
Message ID: 725     Entry time: Tue Apr 13 15:32:51 2010     Reply to this: 726
Author: Koji 
Type: Laser 
Category: Doubling 
Subject: Both MZ and ISS locked 

Dmass and Koji

Last night we engaged the MZ and the ISS paths with the analog servos.

When I went to the lab, the MZ was locking but the ISS was oscillating at around 70kHz.
We reduced the gain of the last stage by a factor of 3, the oscillation was removed.

Dmass planned a comprehensive set of the measurements and is expected to reveal it on the e-log.

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