Tuesday Morning CDS activities:

The EX ESD electronics are currently being powered off temporary power supplies that are in the VEA next to SUS-R1 rack. This temporary setup is to help with the ongoing noise hunting of the IO chassis fan noise seen in DARM (alog 46983). This morning we placed the safety vacuum interlock on the HV power supplies. Interlock will turn off the HV power supplies if the vacuum pressure is not within a specified range.

While doing this work the low voltage power supply was accidently turned off (±18V and ±48V) and restarted. It was later discovered that the ±18V thermal breaker on the LN ESD chassis had tripped. Thermal breaker was reset and all front panel lights came back on. Operator confirmed he was seeing reasonable readback signals. Looked at the power supply and saw about .4A on both legs, but can't remember if it was for the ±18V or the ±48V.

Ran new cables from the ISCTEX table to SUS-R1. These will be used to remotely enable the table lights, TCS LED lights, and monitor table fan status.