Reports until 14:39, Tuesday 21 October 2025
H1 SUS (SUS)
filiberto.clara@LIGO.ORG - posted 14:39, Tuesday 21 October 2025 (87620)
Sat Amps Modified: Lower Stages MC1, MC2, MC3, PR3, and SR3

WP 12844
ECR E2400330
Modified List T2500232

The following SUS SAT Amps were upgraded per ECR E2400330. Modification improves the whitening stage to reduce ADC noise from 0.05 to 10 Hz.

Suspension Old New OSEM
MC1 M2 S1100182 S1100148 ULLLURLR
MC1 M3 S1100176 S1100135 ULLLURLR
MC3 M2 S1100069 S1100106 ULLLURLR
MC3 M3 S1100123 S1100093 ULLLURLR
PR3 M2 S1100063 S1000274 ULLLURLR
PR3 M3 S1100113 S1000277 ULLLURLR
MC2 M2 S1100110 S1100169 ULLLURLR
MC2 M3 S1000294 S1100174 ULLLURLR
SR3 M2 S1100105 S1100146 ULLLURLR
SR3 M3 S1100074 S1100134 ULLLURLR

F. Clara, J. Kissel, O. Patane