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You might want to add a few numbers : I mean that it might be worse mentionning that in heavy flavour jets events for a sample of 10000 e+e- --> to heavy flavour jets, ~68000 particles are produced. Of those 68000 particles 73% are low momenta particles, with a momentum below 3 GeV. For the 28% particles with higher momenta, half ot them stil have a momentuml below 10 GeV. Therefore low energy test beams are important. This trend toward lower momenta particles tend to be even stronger for softer jets from light quarks. (details can be found on JINST-SISSA-p1003-October06- table 3, page 7, http://www.iop.org/EJ/toc/1748-0221/1/10) However, for part of the physics study beyond the standard model, e.g. involving sleptons, the containment and accurate measurement of the high momenta particles is required as well. Test beams for high momenta particles are therefore important too during detector prototyping.( see SnowMass 2005- talk by Ayres Freitas at the Muon Id session) Caroline Milstene FermiLab MS 231 Tel 630-840-5414 P.O.Box 500 Batavia-Il-60510 e-mail:[log in to unmask] ----- Original Message ----- From: Jim Brau <[log in to unmask]> Date: Wednesday, July 25, 2007 4:22 pm Subject: [Fwd: Final review for ILC TB Roadmap] To: [log in to unmask] > PLEASE RESPOND TO THIS REQUEST FROM VACLAV, FELIX, KIYOTOMO, > AND JAE BY JULY 31. > > > > Subject: Final review for ILC TB Roadmap > Date: Wed, 25 Jul 2007 11:44:01 -0500 > From: Jae Yu <[log in to unmask]> > To: Jim Brau <[log in to unmask]>, "[log in to unmask]" > > <[log in to unmask]>, Hitoshi Yamamoto > <[log in to unmask]>, Vaclav Vrba <[log in to unmask]>, > [log in to unmask], KAWAGOE Kiyotomo <[log in to unmask]>, > > Jae Yu <[log in to unmask]> > > Dear Jim, Francois and Hitoshi, > > The final draft of the ILC TB Roadmap document is prepared and ready > for > the community review before the release. The document can be found > at > the URL: > > > > Given the importance of this document, we would greatly appreciate if > you could distribute this message to the community for our colleagues' > comments within a week, by July 31, so that we can release the document > to public by Aug. 1. > > Thank you for your help! > > Vaclav, Felix, Kiyotomo and Jae > > > -- > ------------------------------------- > James E. Brau > Knight Professor of Natural Science > Physics Department > and Center for High Energy Physics > 1274 University of Oregon > Eugene, OR 97403-1274 > (541) 346-4766