April 20, 2005
Super B Factory Workshop,
Hawaii
Peter Krian, Ljubljana
Ｐｒｏｔｏｔｙｐｅ Ｔｅｓｔ
- 3ื3multi-channel HAPD -
- 3ื3multi-channel HAPD -
Diode : □5
[mm/ch]
Gain : 26000
[electron/photon]
Cd : 73 [pF]
IL : 14 [nA] (average/ch)
Condition: VHV=8[KV], VBIAS=320[V]
53 φ
１５ｍｍ
1pe
2pe
3pe
4pe
Gain of the HAPD is higher than for the HPD, but the noise level is also higher due to
its large detector capacitance.
The HPD shows a better single photon response.