Hi: I would like to second these modifications. We need to have forward tracking implemented and the cryostat also. Having the correct segementation for the S EM calorimeter is also important. Uriel Uriel Nauenberg Prof. of Physics Campus Box 390, Physics Dept., University of Colorado, Boulder, CO 80309-390 [log in to unmask] Phone # (303) 492-7715 FAX # (303) 492-5119 On Fri, 21 May 1999, Jim Brau wrote: > Dear Colleagues, > > I have tried to compile a complete list of the "fixes" > that we have been identifying for August. That list follows. > Bruce has helped me with this list. > These are mostly "corrections" to the S1 and L1 configurations. > I realize that in August we may want to actually change the > configurations, such as increasing the tracking volume for Model S, > or going to a completely different layout in some way. > That would be outside the "spirit" of this list. > Please comment on the list, suggest missing items, etc. > > Jim > > > > _______________________ > James E. Brau > Physics Department > University of Oregon > Eugene, OR 97403-1274 > (541) 346-4766 > > > > 1. reduce the segmentation of Model S EM to 1 cm x 1 cm > 2. reduce the beampipe thickness to 0.5 mm > 3. change the CCD layout to Chris' new layout: > > http://hep.ph.liv.ac.uk/~green/lcfi/techdraw/VXD_col.ps > > 4. use the same CCD layout for both model S and model L > 5. add the VXD cryostat to both detectors > 6. add forward tracking to Model L > 7. add 1 cm to Rinner for Model S forward tracking (mask clearance) > > Bruce proposes: > > z r_inner (110 mrad + 1 cm) > > 31.2 4.4 > > 61.2 7.8 > > 91.2 11.1 > > 121.2 14.4 > > 149.2 17.5 > > 8. increase the inner radius of the TPC. > 9. far-forward instrumentation suggested by Steve Magill for QCD tagging > and SUSY background rejection. More specifics required. > > > > >