Title :
The NA31 transition radiation detector
Author_Institution :
CERN, Geneva, Switzerland
fDate :
2/1/1989 12:00:00 AM
Abstract :
A transition radiation detector that has been added to the NA31 CP violation experiment at CERN to improve the electron-pion separation is described. The detector consists of four radiators each followed by a proportional wire chamber. The wire chamber gas (Xe/CH4/He) has the same density as the CO2 in the radiators to minimize the hydrostatic pressure difference. The gas gain of the chambers is stabilized online by monitoring with radioactive sources. A technique for electron-pion separation is discussed, and results obtained with test beams are given
Keywords :
electron detection and measurement; meson detection and measurement; proportional counters; CP violation experiment; NA31 transition radiation detector; electron-pion separation; gas gain; proportional wire chamber; Argon; Educational institutions; Electromagnetic wave absorption; Electrons; Helium; Mesons; Radiation detectors; Testing; Wire; X-rays;
Journal_Title :
Nuclear Science, IEEE Transactions on
