Title :
A large area MicroGap Chamber with two-dimensional read-out
Author :
Angelini, F. ; Bellazzini, R. ; Brez, A. ; Massai, M.M. ; Raffo, R. ; Spandre, G. ; Spezziga, M. ; Bozzo, M. ; Caner, A.
Author_Institution :
Istituto Nazionale di Fisica Nucl., Pisa, Italy
fDate :
6/1/1996 12:00:00 AM
Abstract :
A 10×10 cm2 MicroGap Chamber with a small stereo angle read-out has been developed for the inner tracking system of CMS. The anode strips are 9 μm wide with a pitch of 200 μm. The sampling pitch of the back cathode is 400 μm at a stereo angle of 50 mrad. Both coordinates are read-out from the same side of the detector substrate. Measurements of gain stability, fraction of induced charge on the back electrode, uniformity of response along the strip and rate capability have been performed in laboratory, using X-ray sources. Detection efficiency, spatial resolution, charge and space correlation have been measured with minimum ionizing particle beams at CERN
Keywords :
detector circuits; multiwire proportional chambers; nuclear electronics; position sensitive particle detectors; proportional counters; X-ray sources; back electrode; detection efficiency; gain stability; large area MicroGap Chamber; space correlation; spatial resolution; stereo angle read-out; two-dimensional read-out; Anodes; Cathodes; Charge measurement; Collision mitigation; Current measurement; Detectors; Gain measurement; Particle beam measurements; Sampling methods; Strips;
Journal_Title :
Nuclear Science, IEEE Transactions on
