janos.csizmazia@LIGO.ORG - posted 19:15, Tuesday 30 January 2024 - last comment - 21:04, Tuesday 30 January 2024(75638)
1-30 vent vacuum diary
Today's activities: - HAM3 Y+ door has been removed - The pumpdown at EX has been started, with the Hepta. In the end of the day, the pressure is in the low E+0s - a.k.a. a few Torrs; so transitioning to Turbo tomorrow. The purge air won't be switched off until the leak tests - In parallel with the HAM3 door removal, the purge air was hooked up to the X-manifold as well (now it is purging at the input beam; at the x-manifold; and at HAM7) - BSC8 AIP railed - possibly there is a leak between the main volume and the annulus volume, will be further investigated. Will be taken care of tomorrow
Today's dew point measurement at the OMC tube, prior to in-chamber activites, -45.8degC