| 摘要 |
A method of providing nuclear particle identification for e, mu, pi, and p of up to about 4 to about 5 GeV/c using an improved Threshold Cerenkov Detector With Radial Segmentation (TCDRS), comprising: A) Allowing particles of e, mu, pi, and p to impinge on three concentric shells of twenty-five radiator tubes; wherein: i) an outer shell of radiator tubes is filled with water and a wavelength shifter to provide a first index of refraction; ii) a middle shell of the radiator tubes is filled with mineral oil to provide a second index of refraction higher than the first index of refraction; and iii) a center shell of the radiator tubes is filled with mineral oil and a wave length shifter to provide a third index of refraction higher than the second index of refraction; B) Obtaining blue light from three concentric shells of twenty-five radiator tubes segmented radially into three different materials; and the ultraviolet Cerenkov light produced in the radiators is absorbed by a wavelength shifter and emitted as blue light in excess of 120 blue photons over a Cerenkov detector with only one radiator material; and C) Counting particles as an event when a gated pulse is created when at least one of two scintillation counters on top of the detector and at least one of two scintillation counters beneath the detector are struck when a particle traverses the detector volume to create a blue photon that is multiplied by an attached photomultiplier tube.
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