TY - JOUR
T1 - Initial performance of the VENUS transition radiation detector
AU - Terunuma, N.
AU - Kanda, N.
AU - Sakuda, M.
AU - Chiba, Y.
AU - Fukushima, Y.
AU - Haba, J.
AU - Krüger, A.
AU - Nakano, I.
AU - Nakamura, S.
AU - Ogawa, K.
AU - Ohsugi, T.
AU - Suzuki, A.
AU - Watase, Y.
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1992/12/1
Y1 - 1992/12/1
N2 - The VENUS-TRD is a cylindrical transition radiation detector, extending from 127 cm to 157.7 cm radially and 296 cm axially. It is designed to improve the e/π separation capability of the VENUS detector by a factor of 10 in order to complement the lead glass calorimeter. It covers an angular region of |cos θ| < 0.68 and contains four layers of radiators and X-ray chambers. It has been working very stably since it started data-taking at the TRISTAN e+e- storage ring in June, 1991. The pion rejection power (Rπ = 1 επ) at an electron efficiency of 90% is Rπ = 10±1 and 15±2 for isolated tracks with a momentum range of 1 < P < 3 and 3 < P < 10 GeV/c, respectively. It decreases to Rπ = 7±1 for tracks with P > 1 GeV/c in hadronic events due to overlap of the tracks in the chamber cells of the TRD. The VENUS-TRD is the largest TRD to perform in colliding beam experiments.
AB - The VENUS-TRD is a cylindrical transition radiation detector, extending from 127 cm to 157.7 cm radially and 296 cm axially. It is designed to improve the e/π separation capability of the VENUS detector by a factor of 10 in order to complement the lead glass calorimeter. It covers an angular region of |cos θ| < 0.68 and contains four layers of radiators and X-ray chambers. It has been working very stably since it started data-taking at the TRISTAN e+e- storage ring in June, 1991. The pion rejection power (Rπ = 1 επ) at an electron efficiency of 90% is Rπ = 10±1 and 15±2 for isolated tracks with a momentum range of 1 < P < 3 and 3 < P < 10 GeV/c, respectively. It decreases to Rπ = 7±1 for tracks with P > 1 GeV/c in hadronic events due to overlap of the tracks in the chamber cells of the TRD. The VENUS-TRD is the largest TRD to perform in colliding beam experiments.
UR - http://www.scopus.com/inward/record.url?scp=0026961590&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026961590&partnerID=8YFLogxK
U2 - 10.1016/0168-9002(92)90335-2
DO - 10.1016/0168-9002(92)90335-2
M3 - Article
AN - SCOPUS:0026961590
SN - 0168-9002
VL - 323
SP - 471
EP - 476
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 1-2
ER -