eleanor.king@LIGO.ORG - posted 14:22, Thursday 26 March 2015 - last comment - 15:50, Thursday 26 March 2015(17489)
EX ring heater power supply is turned off.
Dan, Elli. EX ring heater power supply is turned off. Alll other ring heater power supplies are still on There is a coherence measured between EX magnetometer and DARM at 55Hz (see Gabriele's alog 17423), so we are checking whether turning off the ring heater power supply removes this line.
The 55MHz line didn't disappear, so we have turned off ITM ring heater power supplies also.