Reports until 12:04, Thursday 07 May 2015
H1 TCS
eleanor.king@LIGO.ORG - posted 12:04, Thursday 07 May 2015 (18300)
EY HWS switched to temporary new power supply

Nutsinee, Robert, Elli

We have temporarily switched the EY HWS to a different power supply to see if this will eliminate the 57Hz coupling into DARM.  The HWS is currently powered using a cable running from the big transformer box at EY. The EY HWS is currently switched on, and can't  be switched off remotely in this current configuration.   We plan to returm the HWS to its orgininal power supply tonight or tomorrow morning.