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28 April 2005Ckov1 Update -- S. Kahn1 Update to the Upstream Cherenkov - Separation Steve Kahn Brookhaven National Lab May 2, 2005 Detector Tele-Meeting
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28 April 2005Ckov1 Update -- S. Kahn2 Simulation Running Conditions Using a 10 cm C 6 F 14 radiator for these calculations: Produces more c (and PE) by a factor of 5. A traversing muon loses ~26 MeV in energy in radiator. A thicker radiator should not affect the thresholds so we should not a priori improve the separation (other than having enough light) The beam contamination has the same momentum distribution as the muons. The relative number of PE from and now have meaning. The initial sample has 50% and 50% . Samples with mono-chromatic momentum are run 180, 200, 220, 240, 260 MeV/c samples.
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28 April 2005Ckov1 Update -- S. Kahn3 180 MeV/c: c Generated by Traversing
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28 April 2005Ckov1 Update -- S. Kahn4 200 MeV/c: c Generated by Traversing
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28 April 2005Ckov1 Update -- S. Kahn5 220 MeV/c: c Generated by Traversing
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28 April 2005Ckov1 Update -- S. Kahn6 240 MeV/c: c Generated by Traversing
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28 April 2005Ckov1 Update -- S. Kahn7 260 MeV/c: c Generated by Traversing
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28 April 2005Ckov1 Update -- S. Kahn8 180 MeV/c: PE Seen in PMTs from
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28 April 2005Ckov1 Update -- S. Kahn9 200 MeV/c: PE Seen in PMTs from
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28 April 2005Ckov1 Update -- S. Kahn10 220 MeV/c: PE Seen in PMTs from
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28 April 2005Ckov1 Update -- S. Kahn11 240 MeV/c: PE Seen in PMTs from
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28 April 2005Ckov1 Update -- S. Kahn12 260 MeV/c: PE Seen in PMTs from
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28 April 2005Ckov1 Update -- S. Kahn13 Separatibility of pions from muons. Defining the overlap of the distributions of the number of PE seen from a muon and pion traversing the radiator as below we see that we can reasonably separate pions from muons up to about 240 MeV/c.
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28 April 2005Ckov1 Update -- S. Kahn14 Cone Sizes P cc tan c sin 2 c 1800.86240321.93º0.4026060.139483 2000.88419725.2069º0.4707110.181381 2200.90143027.44184º0.5192780.212381 2400.91523329.06202º0.5557250.235959 2600.92642530.28422º0.5839830.254308
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