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R5916U-51 Datasheet(PDF) 5 Page - Hamamatsu Corporation |
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R5916U-51 Datasheet(HTML) 5 Page - Hamamatsu Corporation |
5 / 8 page Figure 12: Dimensional Outline (Umit: mm) Figure 13: Voltage Divider and Gate Circuit FUNDAMENTAL OPERATING PROCEDURE TPMHA0348ED TPMHC0090EC TPMHC0096EA PHOTOCATHODE SHV-R CONNECTOR -HV INPUT SMA-R CONNECTOR ANODE OUTPUT SMA-R CONNECTOR GATE PULSE INPUT 4.6 ± 0.1 7.9 7 WINDOW FACE PLATE EFFECTIVE PHOTOCATHODE DIAMETER 10 MIN. 3.0 ± 0.2 53.8 ± 0.3 71.5 ± 0.3 1) A general set-up for R5916U-50 is shown at right. This is to perform a photon counting with gating function and to detect weak light generated from the samples by the laser excitation. 2) The pulse generator used in this set-up produce an output having +10 V in height and adjustable width which you re- quire. It also produces a trigger signal synchronyzing an output pulse to the laser output. The R5916U-50 is in gate off mode in the beginning to prevent unwanted signals caused by the laser light or some scattered light which may strike the photocathode directly. 3) The pulse generator required for gating function is very simple. The required specifications for the pulse generator is as follows: a. Output voltage is +10 V to +15 V. b. Pulse width is just what you require (between 5 ns and 10 ms). LASER EMISSIONS HIGH VOLTAGE POWER SUPPLY C4840 PULSE GENERATOR R5916U-50 COUNTER DISCRI- MINATOR AMP C5594 SAMPLE OUTPUT FOR GATING TRIGGER OUTPUT 6 M Ω 24 M Ω 12 M Ω 33 k Ω 100 k Ω 330 pF 1000 pF 1000 pF 450 pF 330 pF 330 pF 10 k Ω GND GND MCP ANODE ANODE OUTPUT SMA-R CATHODE 50 Ω -HV SHV-R GATE SIGNAL INPUT SMA-R Some of the values indicated in this circuit may be different from actual values to meet the specifications. GATE 330 pF |
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