kyle.ryan@LIGO.ORG - posted 08:29, Saturday 08 December 2018 - last comment - 09:19, Saturday 08 December 2018(45769)
Y2-8 beamtube ion pump
New problem? This is showing that it has shut off. This is very recent and will show up as a pressure increase soon if it is real -> I will monitor and make comment to this entry when data confirms or refutes.
Comments related to this report
chandra.romel@LIGO.ORG - 08:35, Saturday 08 December 2018 (45770)
It could be that the solar PV charged battery that powers that gauge is low due to the cloudy, cold days we've had (we had this issue last year....need more solar! :). I looked at both these pumps yesterday and they were ON. We now have end station IPs valved in so if these BT IPs fail it's not so urgent. Gerardo and I talked about alarming on the voltage of Y2-8 & X2-8 so we know if/when the pump (or HV cable) fails.
kyle.ryan@LIGO.ORG - 09:19, Saturday 08 December 2018 (45771)
It could be that the solar PV charged battery that powers that gauge is low due to the cloudy, cold days we've had (we had this issue last year....need more solar! :). I looked at both these pumps yesterday and they were ON. We now have end station IPs valved in so if these BT IPs fail it's not so urgent. Gerardo and I talked about alarming on the voltage of Y2-8 & X2-8 so we know if/when the pump (or HV cable) fails.
Pressure data indicates that the pump is still pumping and that only the independently-powered CDS read-back is off.