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Part Number	Size [mm]
R9220	28

Click image to enlarge	High QE Multialkali Photocathode, New Electro–Optical Design, 28 mm (1-1/8 Inch) Diameter, 9-stage, Side-on Type
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Key Specifications	Drawing	Related Products
Part Number R9220 Type Side on Size 28mm Min 185nm Max 900nm Peak Sens. 450nm Window UV Glass Cathode Type Multialkali Cathode Luminous Sensitivity 450µA/lm Cathode Blue Sensitivity Index 12.5 Red White Ratio 0.4 Anode Luminous Sensitivity 4500A/lm Gain 1.0E+07 Dark Current after 30 min. 10nA Rise Time 2.2ns Transit Time Spread 1.2ns Multi Anode N Magnetic Shield E989 Socket Bare E678-11A Socket + bleeder assy. E717-63 Socket Other C6270 Power Supply C4900 C9619 C3830 c9525-50 C3360 Amplifier C7319 C6438 C5594 M7279 M8879	Click image to enlarge Typical Spectral Response Click image to enlarge	Magnetic Shield E989 Socket Bare E678-11A Socket + bleeder assy. E717-63 Socket Other C6270 Power Supply C4900 C9619 c9525-50 Amplifier C7319 C6438 M7279 M8879