Reports until 10:15, Thursday 27 February 2025
LHO VE
david.barker@LIGO.ORG - posted 10:15, Thursday 27 February 2025 - last comment - 10:39, Thursday 27 February 2025(83084)
Thu CP1 Fill

Thu Feb 27 10:05:41 2025 INFO: Fill completed in 5min 38secs

For this fill I tested that the rate-of-change trip value can be changed in the configuration yaml file and then loaded into the code. For this test it was reduced from 60.0 to 50.0 DEGC.

The code which generates the plot now dynamically reads the trip PV to set the horizontal bar.

It looks like we tripped on a TC-A sputter just before the LN2 got flowing, but looks like a good fill.

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Comments related to this report
david.barker@LIGO.ORG - 10:21, Thursday 27 February 2025 (83085)

The code currently stops updating the ROC channels at the time the fill is terminated. These channels are then zeroed at the start of the next fill. This is the reason the lower panel in the plot has bars behind the legend from yesterday's fill, and that these channels flat line from the end time onwards.

I'll work on a code change to continue calculating the ROC for a period of time after the fill ends.

david.barker@LIGO.ORG - 10:39, Thursday 27 February 2025 (83086)

New code has been loaded which continues with ROC calcs for 10 minutes post fill. I will test this during tomorrow's fill.