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| Ｐｒｏｔｏｔｙｐｅ Ｔｅｓｔ |
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| - 3×3multi-channel HAPD - |
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| 53 φ |
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| • | Diode : □5 [mm/ch] |
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| • | Gain : 26000 [electron/photon] |
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| • | Cd
: 73 [pF] |
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| • | IL
: 14 [nA] (average/ch) |
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| • | Condition:
VHV=8[KV], VBIAS=320[V] |
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| １５ｍｍ |
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| Gain of the HAPD
is higher than for the HPD, |
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| but the noise
level is also higher due to its |
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| large detector
capacitance. |
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| The HPD shows a better
single photon |
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| response. |
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