[Solid_daq] Low Energy Background rate on the Light Gas Cherenkov

[Alexandre Camsonne]

Hi Mike,
thank you for the plots that gives a starting point.

Could you also add the plots of efficiency and distribution of rate in the
detector ?

There might be some way to optimize by increasing some threshold in places
where there is a lot of light.

Also I think you mentioned that most of the time only 2 or 3 PMTs are hit.

But could you also look at the sum over 9 PMTs with higher PE thresholds,
there might be some places where we could put a higher threshold on the sum.
Though it is possible the rate just goes crazy when you sum all 9 PMTs.

Hopefully with the increased baffle and beam pipe size that can be further
reduced.

Alexandre


On Fri, Jul 26, 2013 at 2:15 PM, Michael Paolone <mpaolone at jlab.org> wrote:

> Hi everyone,
>
> As promised, I have some new results for my latest Low energy background
> rate calculation on the LGC.  You can find the numbers on the wiki at:
>
> https://hallaweb.jlab.org/wiki/index.php/SIDIS/PVDIS_Cherenkov
>
> I'm also running more simulation now with the the first baffle inner
> radius = 5cm, and no beampipe/absorber.
>
> -Michael
>
>
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