Reports until 17:36, Tuesday 03 February 2015
H1 ISC
daniel.sigg@LIGO.ORG - posted 17:36, Tuesday 03 February 2015 (16446)
New align/misalign feature for PZTs

As it happened the new als models contain another experimental feature: An align/misalign button for the input beam steering. This feature was added at the end of the integration module. The aim is to have separate values for the misaligned and aligned state. The alignment values are the output bias of the integrators. This allows for instantaneous and glitch-free off-loading as well as a single button misalignment. The misaligned state can either be a fixed value or a value which is added to the aligned value. An additional calibration gain has been added to the output to make sure the alignment values are in physical units. All state changes are done with a smooth ramping process.

All integrators have been updated to include a ramp time.

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