Reports until 14:25, Tuesday 10 March 2026
H1 IOO (ISC)
jennifer.wright@LIGO.ORG - posted 14:25, Tuesday 10 March 2026 (89456)
Modulation depths with new vs. old eom

With the new EOM we used a single bounce scan of the OMC to measure the modulation depths of the 9 and 45 MHZ signals as we will need them to lock the IFO now we have the IMC lock working.

Old values:                                New values:

gamm9 = 0.213                        gamma9 = 0.235

gamma45 = 0.275                    gamma45 = 0.285

For a reference for the old measurements see this alog from Elenna (#81816) and this alog from me for new ones (#89230).