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A transition radiation detector which features accurate tracking and dE/dx particle identification

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20 Author(s)
E. O'Brien ; Brookhaven Nat. Lab., Upton, NY, USA ; M. Bennett ; V. Cherniatin ; C. Y. Chi
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The results of a test run involving a transition radiation detector (TRD) that can distinguish electrons from pions with momenta greater than 0.7 GeV/c and simultaneously track particles passing through the detector are described. The particle identification is accomplished by a combination of the detection of transition radiation from the electron and the difference in electron and pion energy (dE/dx) in the detector. The dE/dx particle separation is most efficient below 2 GeV/c, while particle identification utilizing transition radiation is effective above 1.5 GeV/c. Combined, the electron-pion separation is better than 5×102. The single-wire, track-position resolution for the TRD is ~230 μm

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IEEE Transactions on Nuclear Science  (Volume:40 ,  Issue: 2 )