Question: Estimate the minimum length of a gas Cerenkov counter that could be used in the threshold mode to distinguish between pions and kaons with momentum

Estimate the minimum length of a gas Ċerenkov counter that could be used in the threshold mode to distinguish between pions and kaons with momentum 20 GeV/c. Assume that 200 photons need to be radiated to ensure a high probability of detection. Assume also that the radiation covers the whole visible spectrum and neglect the variation with wavelength of the refractive index of the gas.

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For a pion to give a signal but not a kaon we must have n 1 K n where c 1 m 2 c 2 p 2 1... View full answer

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