Reports until 15:16, Monday 05 January 2015
H1 SEI
jim.warner@LIGO.ORG - posted 15:16, Monday 05 January 2015 - last comment - 09:26, Tuesday 06 January 2015(15872)
HAM3 Sensor Correction still behaving strange

Last year, we thought we had found a configuration using sensor correction on HEPI that worked on HAM3. I was looking (Krishna was, too, he saw it first) at the summary pages over break and noticed that HAM3 still looked like it had the .6hz peak. I came in this morning, checked the configuration and did an on/off measurement, and HAM3 still has the same issue, even when we correct to HEPI instead of the ISI, contrary to what we found last time. See attached plot. Solids are measurement taken with sensor correction off, dashed are with HEPI sensor correction.

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Comments related to this report
richard.mittleman@LIGO.ORG - 09:26, Tuesday 06 January 2015 (15884)

Which ground siesmometer was used for the sensor correction?