The CMS Construction - Infn
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The CMS Construction - Infn
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Choice of the Photodetector<br />
20<br />
d eff ~6μm<br />
40μm<br />
Avalanche photodiodes (APD)<br />
Two 5x5 mm 2 APDs/crystal<br />
- Gain: 50 QE: ~75% @ λ peak = 420 nm<br />
- Temperature dependence: -2.4%/ O C<br />
- Gain dependence on bias V: 3%/V
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