PCAL Injection tests complete. PCAL X has been restored to nominal configuration.
Injection Approx End time (GPS)
DARM 1 1127683335
PCAL 1 1127683906
PCAL 2 1127684171
PCAL 3 1127684465
DARM 2 1127684766
DARM 3 1127685143
More details and analysis to come.
These were run from the hwinjection machine as hinj.
Usual DARM Command
awgstream H1:CAL-INJ_TRANSIENT_EXC 16384 coherenttest1from15hz_1126257408.out 1.0 -d -d
PCAL Command:
awgstream H1:CAL-PCALX_SWEPT_SINE_EXC 16384 coherenttest1from15hz_1126257408.out 1.0 -d -d
We turned OFF the 3 [kHz] PCAL line during the excitation.
We're holding off on observation mode to confir about other single IFO tests we can do while L1 is down.
christopher.biwer@LIGO.ORG - 15:14, Wednesday 30 September 2015 (22123)DetChar, INJ
The SNRs of the Pcal injections seem a bit lower than intended. Omega reports SNR 10.5 for the injection through the normal path, which is about right. But for the Pcal injections, the SNRs are 5.5, 7.6, and 7.2. Note that these are the SNRs in CAL-DELTAL; someone should check in GDS strain as well. Links to scans below:
Standard pathPcal 1Pcal 1Pcal 1
peter.shawhan@LIGO.ORG - 06:21, Thursday 01 October 2015 (22143)INJ