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Re: Thoughts on motivating tof for Review

Elton -

    Thanks for putting this together, it is a good start on organizing this
material. 
On Fri February 22 2008, Elton Smith wrote:
> 
> Friends,
> 
> I spent some time with Matt and Beni to go over the motivation/arguments
> for tof in the detector, given that kaon id is very limited. I put these
> out for comments/discussion especially in order to define what
> calculations/work might need to be done in preparation for the review. We
> came up with the following points
> 
> - pion purity (how often are we fooled by other topologies?)
> - positive proton id (mostly in the barrel)
> - forward tof input to trigger
> - timing information for analysis (start time for drift times, rejection
> of accidentals coincidences with the tagger)
> - part of future comprehensive pid detector package for detector (covering
> pi/K id below 2 GeV).
> 
> I would appreciate comments suggestions on what to emphasize and priority
> for any studies that are required.
> 
I suppose that the best way to deal with these is to simply use a large sample
of PYTHIA events to emulate our global spectra. Historically, we picked particular
channels of interest such as p4pi and p2pi2K with and without resonance contributions.
I would guess that PYTHIA would give is a better handle. I would add that the most promising 
final states in searches for Hybrids involve 4  and 5 pseudoscalar mesons. In some sense,
generating Pythia data, and then skimming out these particular events might be a 
good way to start.


> 
> Questions:
> - What is the granularity (segmetation) required due to rate
> considerations?
> - What is the spectra of all particle species (pi,K,p) over the detector
> (e.g. what is the ratio of particle types in the Bcal and the TOF?)
> - Study acceptance of charge particles (actual trajectories in B field)
> for the 1deg beam hole and at the largest angles?
> 
> 
> 
> 
> 
> 
> Elton Smith
> Jefferson Lab MS 12H5
> 12000 Jefferson Ave
> Suite # 16
> Newport News, VA 23606
> elton@jlab.org
> (757) 269-7625
> (757) 269-6331 fax
> 
> 
Curtis


-- 
Professor Curtis A. Meyer        Department of Physics
Phone:  (412) 268-2745          Carnegie Mellon University
Fax:    (412) 681-0648            Pittsburgh PA 15213-3890
cmeyer@ernest.phys.cmu.edu  http://www.curtismeyer.com/