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Reports until 08:18, Wednesday 12 February 2014
H1 ISC
sheila.dwyer@LIGO.ORG - posted 08:18, Wednesday 12 February 2014 (10015)
green arm alingment this morning

This morning the TMS positions to hit the baffle PDs were the same as last night 10001

Alexa moved PR3 by 1.3urad in PIT and 0.7urad in YAW to center the single shot beam on the spot on the camera on ISTC1.  Then we realinged the cavity, moving the ETM pit by hand +3urad in PIT to see cavity flashes around 800 counts. 

We could not engage the PIT and YAW IAL servos at the same time, this would drive the alingment off.  We engaged YAW alone first, this was stable but didn't improve the build up.  When we tried to then egage pit it would drive the alingment off.  Engaging pit by itself first improved the build up, once this had run for a few minutes we could engage yaw.  Now we have around 920 counts on the TRX PD, and -31 dBm beat note power. 

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