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Unformatted text preview: (300K), what is the minimum detectable power of this PMT? b) What would the cathode dark current be if you cool the PMT down to 200K? Does it suggest a way of reducing the dark current? What is the minimum detectable power now? How much improvement in the sensitivity of the PMT youve gained in cooling it down? - Shot noise; Poisson statistics; SNR Given the same cathode dark current at 300K, what is the shot noise? What is the signal-to-noise ratio? Assume the bandwidth is 1Hz, which means that, the integration time is 1 sec. II. Brief intro to semiconductor and p-n junction...
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- Spring '09