Naoki, Sheila

We did the OMC fringe wrapping measurement as Sheila did in 77452.

The template for OMC fringe wrapping is in /ligo/home/sheila.dwyer/OMC/OMC_fringe_wrapping.xml.

This time, we fixed the excitation on OMC L and changed the OFI temperature. The frequency of excitation is 0.65 Hz and amplitude is 13.8 um peak to peak on H1:SUS-OMC_M1_DAMP_L_IN1_DQ. The nominal OFI temperature is 25 and we changed it to 35. We waited for OFI witness temperature to reach the target value. We changed it back to 25 after the measurement.

As shown in the attachment, the OFI temperature of 25 looks slightly better than 35, but IFO was locked for only an hour and still thermalizing so we should repeat this measurement after thermalization.