Thanks for your comments. I'm forwarding them also to the clas_gsim
mailing group.
- Will
Miles Cary Macon Johnston, III wrote:
> Will, about the minutes of the meeting, there seem to be a few things that
> are relevant to my project, and of course, I should probably get infomation
> to you all as soon as I can reach a definite conclusion. And maybe get
> some feedback from others in the group.
>
> >One idea David had was to possibly run with higher cuts for the
> >calorimeter showers, and instead of 'dumping' the invisible energy,
> >distribute it in a reasonable, parameterized way. I.e., if you run
> >with a 10 MeV cut, when a secondary gets down to that level, just add
> >10 MeV (times the sampling fraction) to the relevant volume.
>
> Well, I have been running higher cuts for the calorimeter showers as my
> project. I have not looked at the multiplication of the sampling fraction,
> etc. mentioned above. I should have solid results within the next three
> weeks.
>
I'm not sure what I wrote was completely clear: I believe GEANT tracksa given
particle until its energy is below the cut. After that it ignores the
particle.
David's idea was to take the particle's energy at that point (e.g. 10 MeV) and
do something intelligent with it, like add some part of it to the closest
available
volume.
> >Etienne Burtin did a study of the effects of cuts on calorimeter
> >resolution in 1995. This study indicated that the resolution begins to
> >worsen when the cuts are above 0.5 - 1 MeV.
>
> Yes, and they still do. again, I will have more info in the next three
> weeks. If things go well, I can also possibly get a web page up about the
> results. I'll see what I can do.
That will be very interesting. I think Etienne just looked at what happened if
all the cuts are at the same value. There are more details which could be
considered.
> >The group decided we needed to establish criteria for the accuracy of
> >GSIM, to determine where we can afford to set some of these
> >parameters. Volker Burkert agreed to work on this for next week.
>
> Maybe I should talk to him at some point about my project?
I'm sure he'd be happy to talk with you.
> Thanks.
> Miles Johnston
> The Lord above made liquor for temptation, to see if man would turn away
> from sin.
> The Lord above made liquor for temptation, but, wit a lill' bit o' luck,
> wit a lill' bit o' luck,
> When temptation comes, you'll give right in!