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Photon-Counter Specifications9308-005
Hamamatsu PMT Photon-Counter, Type HC4730-01 Type: Side Window Photocathode Area: 4 x 20 mm2 Wavelength Range: 185 nm to 850 nm Peak Quantum Efficiency (at 440 nm): 22% Dark Count (at 25 C): 80 cps Maximum Pulse Detection Rate: 3 Mcps Pulse Rise-Time: 2 ns Pulse Pair Resolution: 50 ns Photon-Counter Output: BNC, 50-Ohm TTL, 30 ns Pulse Width Maximum PMT Supply Voltage: +1,250 V dc Voltage Divider Current (at 1,000 V): 0.4 mA Power Supply: +6 V dc, 200 mA; -6 V dc 100 mA
High-Voltage Power Supply Module, Type C4710-52 Input Voltage: +24 V dc Output Voltage: +240 V to +1,500 V Maximum Load Current: 1 mA
Measured Electrical Characteristics of PMT
ETI Photonics gratefully acknowledges Hamamatsu's donation of the above items to NAAPO (North American AstroPhysical Observatory) and The Columbus Optical SETI Observatory.
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