Design and construction of a large cylindrical transition radiation detector for the VENUS experiment

Details Design and construction of a large cylindrical transition radiation detector for the VENUS experiment Design and construction of a large cylindrical transition radiation detector for the VENUS experiment

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992nimpa.311...57s&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 311, Issue 1-2, p. 57-77.

Physics

11

Scientific paper

We describe the design considerations and construction techniques of a large cylindrical transition radiation detector (TRD), 296 cm long and 311.4 cm in diameter, for the VENUS experiment at the e+e+ storage ring, TRISTAN. The design is based on measurements by using test chambers with e/π beams and X-ray sources. The test results will be fully described. The TRD contains four modules of radiators, each followed by an X-ray chamber with 8192 (2688) total (sense) wires. The gain calibration of all sense wires has been completed with an accuracy of 5%. The TRD is expected to provide a pion rejection ratio of 15+/-3 with an electron efficiency of 90% for isolated tracks with momenta above 1 GeV/c.

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