Helium Threshold Cherenkov
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pressure setting and efficiency
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Maximum gas
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pressure as a function of the beam momentum to
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select different particles:
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6 meter long Cherenkov efficiency as a function of pressure @ 10 GeV/c beam momentum:
6 meter long Cherenkov efficiency as a function of pressure @ 20 GeV/c beam momentum:
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6 meter long Cherenkov efficiency as a function of the beam momentum to select different particles: