Reports until 17:50, Wednesday 19 October 2016
H1 INJ (INJ)
keith.riles@LIGO.ORG - posted 17:50, Wednesday 19 October 2016 - last comment - 20:47, Wednesday 19 October 2016(30677)
CW injections restarted with removal of sign flip and some increased amplitudes
The CW injections have been restarted remotely (after checking with the control room).
I discovered that because of a sign convention change in actuation functions
between S6 and O1, the CW injections with explicit actuation correction were
being injected with a default sign flip. That sign flip has now been removed.

In addition, the amplitudes of pulsar injections 0, 1, 2, 4, 7, 9 and 14 have now
been doubled over what they were in O1. (This amplitude change was supposed
to take effect several months ago, but I had neglected to change a symlink to 
make it so.) 

In detail, the above amplitude changes were accomplished by changing the symlink RELEASE
pointer in the hinj account from O2test to O2_H1_test2 (it was supposed to be
O2_H1_test1 from early summer until now.) The removal of the sign flip was accomplished
by adding an argument --actuationScale=1.0 to the call to lalapps_Makefakedata_v4 for
each of the 15 injections. Previously, the default value for actuationScale was -1.0, a vestige
of iLIGO sign conventions.


Comments related to this report
keith.riles@LIGO.ORG - 20:47, Wednesday 19 October 2016 (30681)
Correction: 6 of the 7 injection amplitudes listed above were indeed doubled, but the amplitude
of the highest-frequency signal (pulsar 14 at 1991 Hz) was tripled.
The attached spectra of the excitation channel from last night and tonight,
1 sidereal day apart, show the increases of amplitude for all injections above 200 Hz.
Images attached to this comment