[Hps-analysis] New WABs

[Maurik Holtrop]

Has the version of GEANT4 changed between the old and new SLIC?

If it has, then I think there is a big reason to have enough data with both versions to make a meaningful comparison. 
We can discuss if this would also be needed as well if only the target thickness changed. I would think probably not?

- Maurik

> On Aug 4, 2016, at 9:40 AM, Bradley T Yale <btu29 at wildcats.unh.edu> wrote:
> 
> Sure. 
> The old SLIC is still around, but it should be up-to-date with this one though.
> I think it was just future stability that led to moving away from the HEAD revision (hopefully Jeremy can comment).
> From: Sho Uemura <meeg at slac.stanford.edu>
> Sent: Thursday, August 4, 2016 1:02:54 AM
> To: Bradley T Yale
> Cc: hps-analysis at jlab.org; Takashi Maruyama
> Subject: Re: New WABs
>  
> Is it possible to do this with both the old and new SLIC?
> 
> On Thu, 4 Aug 2016, Bradley T Yale wrote:
> 
> > It's no problem.
> >
> > I'll go ahead and make them with the updated target thickness (0.0004062 vs. 0.0004375 cm).
> >
> > ________________________________
> > From: Sho Uemura <meeg at slac.stanford.edu>
> > Sent: Wednesday, August 3, 2016 8:24:02 PM
> > To: Bradley T Yale
> > Cc: hps-analysis at jlab.org; Takashi Maruyama
> > Subject: Re: New WABs
> >
> > The events look fine. Normalization hasn't changed much (Rafo's a and b
> > factors are about the same). Distribution shapes don't look significantly
> > different.
> >
> > Would be good to have a factor of 10 more of the pure WABs, if it's easy.
> > I don't expect it to tell us anything new but it will make things clearer.
> >
> > On Mon, 1 Aug 2016, Bradley T Yale wrote:
> >
> >> Unweighted WAB events using the v2 generator have finished recon. Everything that contains them are labelled 'wabv2':
> >>
> >>
> >> Pure WAB:
> >>
> >> /mss/hallb/hps/production/pass6/recon/wab/1pt05/wabv2_10to1_HPS-EngRun2015-Nominal-v4-4-fieldmap_3.8-fix_pairs1_*
> >>
> >>
> >> WAB with background:
> >>
> >> /mss/hallb/hps/production/pass6/recon/tritrig-wab-beam-tri/1pt05/tritrigv1_NOSUMCUT-wabv2-egsv3-triv2-g4v1_HPS-EngRun2015-Nominal-v4-4-fieldmap_3.8-fix_pairs1_*
> >>
> >>
> >> The ones with background also contain tritrig without an ESum generator cut, to eliminate possible errors from it.
> >>
> >> Once Takashi finishes tweaking the egs5 procedure to eliminate WAB double-counting, I'll rerun everything along with an updated target thickness as well, probably in a fresh directory.
> >>
> >>
> >> -Bradley
> >>
> >
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