Re: event display

[Brendan Kiburg <kiburg@npl.uiuc.edu>]

Hi Steve,
  Thank you very much for this update.  We were looking for the EVH
triggers and had not had much success with Alvarez.  I intended to email
you but got distracted with other things.  I will take a look at the
StepDispTrig classes to get a better feel for this.

Thanks again,
Brendan

On Tue, 18 Apr 2006, Steven Clayton wrote:

> Brendan,
> 
> I should warn you: the "alvarez" trigger of the event
> display is not actually working.  In fact the body
> of the function TAlvarezStepDispTrig::GetNext (in
> src/uiuc/DisplayTrigger/TAlvarezStepDispTrig.cpp) is
> completely commented out.
> 
> If you or Peter would like to test an algorithm for
> this purpose, just describe it to me and I can try
> implementing it.  Or if you like, you can try it yourself.
> The T*StepDispTrig::GetNext(double &time) function
> should set the argument "time" (passed as a reference)
> to the next occurance of the trigger of interest within
> the present Midas event, and return 1 if a trigger is
> found or 0 if not.  The class member fIndex can be used
> to keep track of where you are in the event block.
> Look at TAllMuscStepDispTrig.cpp for a simple example
> of a T*StepDispTrig class.
> 
> I noticed there were a couple of possibly useful ODB keys
> missing in UIUC_Analyzer/Event Display/Triggers, so I added
> them (on puma): "tpcEVH" and "goodmuANDtpcEVH".
> 
> Best regards,
> Steven
>