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Charpak's invention was the
multiwire proportional chamber. It consists of very
large number of parallel wires, where each wire acts
as an individual detector. With the multiwire chamber
the data handling capacity increased
dramatically.
The original particle going
through the chamber gives rise to a signal on a
nearby wire which is proportional to the amount of
ions that is created. Several planes of wires with
different orientations are used to determine the
position of the particle very precisely.
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The Nobel Prize in
Physics 1992 - Georges Charpak »
