cheryl.vorvick@LIGO.ORG - posted 09:01, Tuesday 17 September 2019 - last comment - 15:01, Tuesday 17 September 2019(51988)
PRM parking offsets updated
The previous offsets for parking the REFL beam were allowing some of the beam back onto Calcite Wedge 2, as seen in the IO_FI_OUT analog camera. Offsets are H1:SUS-PRM_M1_TEST_P_OFFSET and H1:SUS-PRM_M1_TEST_Y_OFFSET. Pitch offset was+781, now +681, yaw offset was -5614, now -5914. Accepted in SDF.
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Accepting sdf's in Observe.
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I don't remember of the top of my head what the calibration of these offsets to urad is, but we need to ensure that the reflected beam will still be hitting the dedicated beam dump on top of HAM2 when PRM is misaligned.