Beverly

Complete results may be found on the DetChar Wiki.

• ER10 started at 8:00 PST (16:00 UT) on 14 Nov.
• The duty cycle for this DQ shift was only 12% (counting all of Monday UT) with no observing time on Monday, one lock of 1.5 hours (and several shorter ones) on Tuesday, and two locks of 2 and 4 hours respectively on Wednesday.
• The BNS range varied between 60 and 70 Mpc, covering most of this interval in any of the longer locks. There did not appear to be trends.
• The glitching around the 1083 Hz calibration line persists through the DQ shift.
• Broadband noise ranging up to around 100 Hz comes and goes during observation locks. IThe noise may be weaker in the last lock of the shift.
• See alog ( 31524) for a discussion of fixing the IMC WFS switch and updating a control loop for REFL45 for LSC PD saturations. The latter had appeared dark red (rather than green) in this plot. This was noticed on 15 Nov and appeared fixed on 16 Nov. However, REFL135, which was green on 15 Nov was dark red on 16 Nov.
• Bounce and roll modes were prominent in all the locks except the final one.
• It is possible that the instrument stability is improving although the bounce and roll modes are back on 17 Nov.
• Thanks to LHO fellows Ansel and Young-Min for consultation.