Displaying report 1-1 of 1.
Reports until 10:40, Monday 08 August 2016
H1 CAL (DetChar, SUS)
jeffrey.kissel@LIGO.ORG - posted 10:40, Monday 08 August 2016 (28929)
Restoration of 331.9 Hz Amplitude; Calibration Line Status
J. Kissel, E. Hall, E. Goetz

I'm reconciling the SDF system for PCALY, and I've found a difference in the amplitude of the 331.9 Hz line. After speaking with Evan Hall, he had been commissioning with the line a month or so ago with an abnormally large amplitude of 30000 [ct] (see LHO aLOG 28702), and accidentally left it in place. Since then, someone had blindly accepted this value in the SDF system. I've now reverted it to the O1 amplitude of 2900 [ct] (see e.g. LHO aLOG 27981).

For future reference, all calibration lines that are on and present in the system:
Channel Names                 _FREQ (Hz)  _SINGAIN (ct)
H1:CAL-PCALY_PCALOSC1_OSC        36.7            125       O1-scheme kappa_TST / kappa_PU
H1:CAL-PCALY_PCALOSC2_OSC       331.9           2900       O1-scheme kappa_C / f_CC
H1:CAL-PCALY_PCALOSC3_OSC      1083.7          15000       high-frequency calibration check ("bonus" line)

H1:CAL-PCALY_PCALOSC1_OSC      3501.3          39322       high-frequency sensing function characterization ("mobile" line)

                              _FREQ (Hz)  _CLKGAIN (ct)
H1:SUS-ETMY_L1_CAL_LINE          33.7             11       O2-scheme synched oscillator for kappa_U
H1:SUS-ETMY_L2_CAL_LINE          34.7              1.1     O2-scheme synched oscillator for kappa_P
H1:SUS-ETMY_L3_CAL_LINE          35.3              0.11    O2-scheme synched oscillator for kappa_T

H1:SUS-ETMY_LKIN_P_OSC           35.9              0.11    O1-scheme kappa_TST / kappa_PU
Images attached to this report
Displaying report 1-1 of 1.