Re: beamline specs on wiki

[Alexander Somov <somov@jlab.org>]

Hello Richard,

The specification table looks very informative.

Actually I have already started looking on occupancies
in subdetectors due to the background and also on impact
of the background on the Level-1 algorithm. I absolutely
agree with you, we have to show a few plots with occupancies
(I am working on them right now).

Cheers,
       Sascha




On Tue, 30 Sep 2008, Richard Jones wrote:

> Sascha,
>
> In thinking about studies needed to prep for the review, it would be
> useful to take a look at the photon beam specifications on the wiki:
>
>  http://www.jlab.org/Hall-D/software/wiki/index.php/Photon_Beam_Design_Requirements
>
> We developed these quite carefully, and I think they are a good starting
> point.  We should go down the list and see which of these we have proof
> that our design satisfies.  Keep in mind that "nominal intensity" is
> 10^7 tag/s in GlueX, not 10^8.  In particular, the background
> requirement that the rates for backgrounds in all of the major detectors
> from beam contamination be less than 1% than from beam photons
> interacting in the target, for each major species: charged tracks (I
> would group these together), photons, and neutrons.
>
> I think we have all of this data already, but it would be good to show
> it for specific detector systems instead of just for an artificial plane
> at the entrance to the detector.
>
> What do you think?
>
> Richard Jones
>