[Halld-tagger] is_fiducial cut in TPOL analysis?

[Michael Dugger]

Richard,

We are not using the fiducial cuts due to beam trips. Sounds important to 
include.

Thanks for the information. We will have to get that information into the 
TPOL trees.

Take care,
Michael

On Tue, 3 Apr 2018, Richard Jones wrote:

> Hello Michael and Sebastian,
>
> A question has come up in discussions here in the counting house, that I
> thought I would raise with you and Michael. In the physics analyses, the
> standard practice is to exclude events just before and after beam trips
> because the properties of the beam can be problematic during those periods.
> To help with this in JANA, there is a standard object named DBeamCurrent
> that has a method called is_fidiucial() which returns a true/false value.
>
> Are you using this condition to gate the events you analyze for the TPOL
> analysis? In order for the polarizations you produce to be directly
> applicable to physics analyses, both need to select the events under the
> same beam conditions.
>
> -Richard Jones
>