[Halld-cal] Newer plots

[Elton Smith]

Hi Sean,

Thanks for passing on these plots. In particular the efficiency plots 
are interesting. Some of the efficiency issues in the data depend on 
whether we were running in mode 7 or 8, as I showed at the last 
collaboration meeting. Ahmed is looking into this.

Cheers, Elton.

Elton Smith
Jefferson Lab MS 12H3
12000 Jefferson Ave STE 4
Newport News, VA 23606
(757) 269-7625
(757) 269-6331 fax

On 6/4/15 5:16 PM, Sean Dobbs wrote:
> Hi all,
>
> I've analyzed some bggen data I made for a different study, and found 
> similar results to Tegan's [see attached BCAL_inv_mass-mc-cluster.pdf 
>  and  BCAL_inv_mass-mc-shower.pdf].  An un-expert look at the 
> reconstruction code suggests that the attenuation lengths are used in 
> the energy reconstruction and these are indeed different for data and MC.
>
> There might be a mismatch in the values of the attenuation lengths 
> used in the simulation, and reconstruction, though. When I look at 
> BCAL/mc_parms, I find the parameter ATTEN_LENGTH = 300.  When I look 
> at the mc variation of BCAL/attenuation_parameters, I find the lengths 
> for each channel are set to 310.  Probably these should be set to the 
> same value?
>
> Another discrepancy I noticed was that the efficiency in each layer 
> calculated with Elton's BCAL_Eff plugin was different for MC and 
> data.  For example:
> - Data Run 2931 - bcal_hist_eff-run3185.png
> - MC - bcal_hist_eff-mc.png
> I'm not sure if the smaller efficiency in MC is related to problems 
> reconstructing certain BCAL points, or other issues with the clusterizer..
>
> Cheers,
> Sean
>
> On Thu, Jun 4, 2015 at 2:47 PM beattite <beattite at uregina.ca 
> <mailto:beattite at uregina.ca>> wrote:
>
>     Hello.
>
>     Here are the mcsmear comparison plots using the variation=mc variable.
>     There are two files.  One is the mass spectra using cluster energies,
>     the other is using shower energies.
>
>
>
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