Measurement of the parameters affecting the time resolution of gallium arsenide detectors

Details Measurement of the parameters affecting the time resolution of gallium arsenide detectors Measurement of the parameters affecting the time resolution of gallium arsenide detectors

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001nimpa.461..185c&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 461, Issue 1-3, p. 185-187.

Physics

Scientific paper

The parameters governing the time resolution of a gallium arsenide strip telescope have been studied in various experimental conditions. The GaAs strip detectors are connected with a classical readout chain made of preamplifier, amplifier, constant-fraction discriminator and time-to-digital converter. The electronic noise, the amplitude and the fall time of the amplifier output pulse have been measured from /-55°C to /20°C. The mean value of the fall time is 950ps at /-55°C and has a linear dependence on the temperature. The time resolution of the gallium arsenide telescope is 173ps at /20°C. A silicon strip telescope processed by the same readout chain exhibits a time resolution of 213ps.

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