Reports until 14:08, Thursday 01 October 2015
H1 General (INJ)
peter.shawhan@LIGO.ORG - posted 14:08, Thursday 01 October 2015 (22153)
Protocol for upcoming coherent hardware injection tests
Chris Biwer and other members of the hardware injections team will likely be doing coherent hardware injections in the near future, and these will hopefully be detected successfully by one or more of the low-latency data analysis pipelines.  Currently, we are still testing the EM follow-up infrastructure, so the "Approval Processor" software is configured to treat hardware injections like regular triggers.  Therefore, these significant GW "event candidates" should cause audible alarms to sound in each control room, similar to a GRB alarm.  The operator at each site will be asked to "sign off" by going to the GraceDB page for the trigger and answering the question, "At the time of the event, was the operating status of the detector basically okay, or not?"  You can also enter a comment.

For the purpose of these tests, if you are the operator on shift, please:
  * Do not disqualify the trigger based on it being a hardware injection -- we know it is!  So, please sign off with "OKAY" if the detector was otherwise operating OK.
  * Pay attention to whether the audible alarm sounded.  In the past we had issues at one site or the other, so this is one of the things we want to test.
  * Feel free to enter a comment on the GraceDB page when you sign off, like maybe "this was a hardware injection and the audible alarm sounded".
  * You may get a phone call from a "follow-up advocate" who is on shift to remotely help check the trigger.

Note: in the future, once the EM follow-up project is "live", a known hardware injection will not cause the control-room alarms to sound (unless it is a blind injection).  You should not write anything in the alog about alarms from GW event candidates, because that is potentially sensitive information and the alogs are publicly readable.