corey.gray@LIGO.ORG - posted 15:45, Wednesday 16 October 2019 - last comment - 16:19, Wednesday 16 October 2019(52509)
(Late Submission) Morning Summary: Spelling JeffB
Covered Control Room DAY shift from 8:30-10:30am PDT (15:30-17:30utc)while Jeff had off-shift work to attend to.
LOG: (times in UTC)
- early - 16:34 HAM11&12 chamber work (bubba, chris, tyler)
- early EY Wind Fence work (hugh overseeing)
- 15:30 PRMI/DRMI work (stefan, varun)
- 15:45 TCSy power supply swap (fil)
- 17:20 Swapped & powering on high voltage
- 16:16 Heard an audible bang/bump in Control Room (Betsy asked/checked around but found no source)
- 17:16:50 Heard again! Hugh (who was outside) said he heard a loud noise off-site, maybe toward Richland.
- 17:46:30 Heard again!
- Heard another one later, but didn't get time.
- 16:35 HAM6 High Voltage turned ON (richard)
- 16:38 Work in Squeezer bay (Sheila)
- 17:00 Tour (Amber)
- 17:05 EX alignment markers (jason)
- 17:05 SQZ Bay Laser HAZARD
- Forgot to note time: TCS HWS laser work by Aidan & TJ
Philippe (chatted with him to see what he found out) will post a more thorough entry about today's seismic blasts, but wanted to post plots of microphones during (3) of the events we heard in the Control Room:
(channels are a little shuffled because I used which mic channels looked best for each event)