Title :
A transition radiation detector which features accurate tracking and dE/dx particle identification
Author :
O´Brien, E. ; Lissauer, D. ; McCorkle, S. ; Polychronakos, V. ; Takai, N. ; Chi, C.Y. ; Nagamiya, S. ; Sippach, W. ; Toy, M. ; Wang, D. ; Wang, Y.F. ; Wiggins, C. ; Willis, W. ; Cherniatin, V. ; Dolgoshein, B. ; Bennett, M. ; Chikanian, A. ; Kumar, S. ; M
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
The authors describe the results of a test run involving a transition radiation detector (TRD) that can both distinguish electrons from pions with momenta greater than 0.7 GeV/c and simultaneously track particles passing through the detector. The particle identification is accomplished through a combination of the detection of transition radiation from the electron and the differences in electron and pion energy loss (dE/dx) in the detector. The dE/dx particle separation is most efficient below 2 GeV/c while particle ID utilizing transition radiation is effective above 1.5 GeV/c. Combined, the electron-pion separation is better than 5*10/sup 2/. The single-wire, track position resolution for the TRD is approximately 230 mu m.<>
Keywords :
electron detection and measurement; meson detection and measurement; position sensitive particle detectors; proportional counters; accurate tracking; dE/dx particle identification; electron-pion separation; energy loss; transition radiation detector; Anodes; Cathodes; Computer vision; Electrons; Mesons; Particle tracking; Radiation detectors; Strips; Testing; Wire;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Santa Fe, NM, USA
Print_ISBN :
0-7803-0513-2
DOI :
10.1109/NSSMIC.1991.258940
