camilla.compton@LIGO.ORG - posted 16:53, Tuesday 29 March 2022 - last comment - 09:27, Thursday 31 March 2022(62398)
ETMX HWS alignment shift and 2W ring heater test 8pm-2am tonight.
We had strange ring heater test results (alog62390) after the ETMX HWS alignment Vicky and I set last week. Today we tweeked the collimating lens alignment realigning the beam closer to the iries. We had moved away from the irises a little when trying to get rid of the ITM reflection. We also used the beam scan to ensure the beam was focusing ~100mm from the L2. Photos attached.
Vicky has set a 2W ETMX ring heater test for 8pm-2am tonight.
Images attached to this report
Comments related to this report
Looks like our exposure time was set too high during our ring heater test, see attached. We lowered it using serial_cmd (wiki link) but we finding that it kept getting reset to 1Hz. will look into which channel we need to use to specify camera sync frequency and exposure.
Images attached to this comment
