marc.pirello@LIGO.ORG - posted 16:32, Tuesday 11 January 2022 - last comment - 15:59, Wednesday 12 January 2022(61271)
Baffle PD gain decreased
I pulled the two baffle PD's at the corner and reduced the gain per WP10149 and E1900033. Gain was reduced by a factor of 10 and chasiss were tested and reinstalled in the biergarten.
Chassis modified - S1400066, S1400065 (H1-SUS-R5-ITMX)
Remaining chasiss to be modified S1400075 (H1-SUS-R1-EX), S1400064 (H1-SUS-R1-EY)
I pulled the remaining two Baffle PD Amplifiers from end-x and end-y, applied the gain reduction modification and reinstalled the chassis. Both chassis were tested before reinstallation.
Chassis Modified - S1400075 (end X), S1400064 (end Y)