Reports until 16:45, Monday 13 June 2022
betsy.weaver@LIGO.ORG -
posted 16:45, Monday 13 June 2022 - (63552)
HAM1 work today - RM blade "locking"
(Weaver, Kissel)
In HAM1, today we:
- Unlocked HEPI (Jim)
- Transition to Laser Haz - 2W (int sphere is gone so not limiting pwr)
- Relock MC at 2W (RyanS, Kissel)
- In-Air WFS driven pre measurement
- Take some pics and get a baseline for BOSEM centering and blade height locations
- Lock RM blades per E2200181 (blades stopped down ~0.5-0.75mm)
- Checked centering of BOSEMs - still ~centered, maybe a 0.5-1mm low, but TFs and controlability didn't indicate we should adjust
- RM TFs
- Realign to WFS
- WFS driven post measurement - see new higher peak (more in Kissel's log)
- Pushed blades down the rest of the way to ~1mm down, reiterated 7-10 above - didn't see much change in this new higher f noise.
Next up:
- Realignment of LSC PD path to walk beam (see Keita's previous alog 63544)
- Install baffle on PSL-IN Viewport - out of nozzle baffle mounting rings so having 1 sent overnight from LLO while more are on order
- Ground loop checks
- Relock HEPI for upcoming door activity