Reports until 11:57, Tuesday 17 September 2013
H1 SEI
sebastien.biscans@LIGO.ORG - posted 11:57, Tuesday 17 September 2013 (7778)
H1 ISI-BS - First performance plots

Find attached some performance plots for BSC-ISI BS. Those first results are promising, even if there is room for improvement and tweaking.

*** HEPI ***

- HEPI with position control (100mHz UGF)

- No feedforward

*** ISI ***

-  Stage 1 blend

o   750mHz for RX, RY, RZ
o   100mHz for X, Y and Z

- Stage 2 blend

o   750mHz for RX, RY, RZ|
o   100mHz for X, Y and Z

- Level 3 controllers

o   Stage 1    40-42Hz
o   Stage 2    30-32Hz

- Feedforward ON

- Sensor correction from the ground ON

*** SUS ***

- Damping loops on the top mass ON

 

This configuration was on all night (very stable). Spectra presented were measured at 1062915770 (start time) during 45 minutes.

Images attached to this report