filiberto.clara@LIGO.ORG - posted 11:53, Wednesday 17 November 2021 - last comment - 10:43, Thursday 18 November 2021(60674)
HAM4 Picomotor Cable Replaced
WP 10059
HAM4 Picomotor in-air cable has been replaced. Handing over to TCS team to test functionality of in-vacuum picomotors.
All HAM4 in-vac picomotors (alog60640) tested and functional. This cable is plugged into flange D6-3C2 (D1101814) and the picomotor controller box with is currently on the TCS racks but will be on top of the HWS table once it's in place.
Cable was found plugged into D6-3C1 which is connected to 2 in-vac thermistors. These have no in-air cable so may not be used anymore. I tried driving the picos before noticing this so may have sent some current to the thermistors. We could look into whether these thermistors are planned to be used again and remove in the future.