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Ring Imaging Cerenkov Counter |
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BTeV Ring Imaging Cerenkov Counter (RICH)
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Introduction
The Ring Imaging Cerenkov detector will be used to distinguish different charged particle
species.
Cerenkov radiation is emitted by particles traveling with speeds faster than the
speed of light in the radiator material, analogous to the sonic boom effect generated by
airplanes exceeding the speed of sound in air. The opening angle of the Cerenkov radiation
cone measures the speed of the radiating particle (v), which can be used to determine
particle mass (m) since the particle momentum (p = mv) is measured independently.
Detector
The Ring Imaging Cerenkov detector uses a gaseous radiator (C4F10) in which the
particles radiate light. This light is reflected by a spherical mirror. The reflected light is collected
by an array of Hybrid Photo Diodes (HPD's).
Tomasz Skwarnicki
Phone: 315-443-5973
Fax: 315-443-9103
Email: tomasz@physics.syr.edu
This page last updated: Friday, 26-Jul-2002 14:49:00 CDT
