Reports until 15:36, Wednesday 01 May 2024
H1 SEI
thomas.shaffer@LIGO.ORG - posted 15:36, Wednesday 01 May 2024 - last comment - 15:53, Wednesday 01 May 2024(77554)
Picket fence station transient cause earthquake mode transition

Jim, Ryan C, TJ

The picket fence station NEW had a large transient that put us into earthquake mode during observing. The code did not register this transient as a glich at first which caused the SEI_ENV mode transition. Looking to the picket fence code it looks like we might be able to tune the glitch settings a bit, but we would have to try out some values over a period of time. It might be worth checking with picket fence experts before we play with this code too much.

This isn't the first time we've seen this, but perhaps the first time we've aloged it. After the 10minute cool down period SEI_ENV returned back to a CALM mode.

Images attached to this report
Comments related to this report
ryan.crouch@LIGO.ORG - 15:53, Wednesday 01 May 2024 (77555)

The transient impulse happened a 2nd time shortly after from the same NEW station over by Spokane. It reached the glitch threshold about 5 minutes after the first impulse. Could there be work ongoing on this seismometer?

Images attached to this comment