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| Head-on PMT Photon Counting Head H7360 Series The H7360 series is a wide sensitive area photon counting head device containing a 25-mm (1") head-on photomultiplier tube, high-voltage power supply circuit and photon counting circuit. Since those circuits are designed for wide band, the H7360 series can operate at a high count rate. The high voltage supply for photomultiplier tube and the discriminator level are preset to optimum values so that photon counting can be performed just by connecting a +5 V supply and a pulse counter. The H7360-01 is of low noise, the H7360-02 has enhanced detection efficiency in the visible range, and the H7360-03 covers sensitivity from the visible to near infrared. A mount flange (E6264) is provided as an option for easy installation to measurement equipment. Product Variations Type No. H7360-01 H7360-02 H7360-03 Spectral Response 300 nm to 650 nm 300 nm to 850 nm Low noise High detection efficiency For visible to near IR range Features Specifications Parameter Suffix Input Voltage Max. Input Voltage Max. Input Current Effective Area Peak Sensitivity Wavelength 300 nm 400 nm Count Typ. 500 nm Sensitivity 600 nm 700 nm Count Linearity *1 Typ. Dark Count *2 Max. Pulse-pair Resolution Output Pulse Width Output Pulse Height *3 Typ. Recommended Load Resistance Signal Output Logic Operating Ambient Temperature Storage Temperature Main Body Weight Mount Flange -01 H7360 Series -02 +4.75 to +5.25 +6 140 22 420 2.3 x 105 4.1 x 105 3.4 x 105 5.7 x 104 -- 6.0 x 106 60 300 18 9 3 50 Positive logic +5 to +40 -20 to +50 140 25 Unit -03 V V mA mm nm 375 1.4 x 105 2.7 x 105 1.7 x 105 4.6 x 104 -- 15 80 420 2.1 x 105 2.5 x 105 2.0 x 105 1.3 x 105 7.8 x 104 5000 15000 s-1*pW-1 s-1 s-1 ns ns V -- C C g *1: Random pulse, at 10 % count loss *2: After 30 minute storage in darkness *3: With input voltage +5 V, Load resistance 50 and Coaxial cable RG-174/U (450 mm) 48 Photon Counting Heads Characteristics (Count sensitivity, Dark count) 106 TPHOB0049EB (-01, -02) 104 H7360-02 TPHOB0028ED (-03) 105 H7360-03 COUNT SENSITIVITY (s-1. pW-1) H7360-03 H7360-01 103 104 DARK COUNT (s-1) 105 H7360-02 102 103 104 101 H7360-01 102 103 100 300 500 700 900 100 10 20 30 101 40 WAVELENGTH (nm) AMBIENT TEMPERATURE (C) Block Diagram PMT AMP COMPARATOR + VOLTAGE DIVIDER CIRCUIT HV POWER SUPPLY Vref 3V 9 ns +HV PULSE SHAPER OUTPUT TO PUSE COUNTER RL = 50 GND +5 V INPUT TPHOC0024EB Dimensional Outlines (Unit: mm) WINDOW 34.0 0.5 Mount Flange E6264 (Option) LOW VOLTAGE INPUT RED (+5 V) BLACK (GND) SIGNAL OUTPUT COAXIAL CABLE (RG-174/U) 4- 3.3 O-RING 3.5 PHOTOCATHODE ( 22 MIN.) M34 x P1.0 M34 x P1.0 47.0 0.2 6 114 1 1000 15 TPHOA0024EB 55 49 |
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