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R2486-02 Datasheet(PDF) 2 Page - Hamamatsu Corporation |
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R2486-02 Datasheet(HTML) 2 Page - Hamamatsu Corporation |
2 / 8 page POSITION-SENSITIVE PHOTOMULTIPLIER TUBES R2486 SERIES Parameter GENERAL Spectral Response Wavelength of Maximum Response Photocathode Material Window Dynode Anode Number of Wires Effective Area 300 to 600 420 Bialkali Borosilicate glass Plano-plano 3.0 ± 0.3 1.5 Coarse mesh 12 16 (X) + 16 (Y) 50 nm nm — — — mm — — — — mm Material Shape Thickness Index of Refraction at 420 nm Structure Number of Stages Description/Value Unit CHARACTERISTICS (Typ. at 25 °C) Table 1: Voltage Distribution Ratio and Supply Voltage Parameter MAXIMUM RATINGS Supply Voltage Between Anode and Cathode Average Anode Current AH Ambient Temperature R2486 R2486-01, -02, -03, -04 1300 0.1 -80 to +50 -30 to +50 V dc mA °C Value Unit Averaged over any interval of 30 seconds maxi- mum. The light source is a tungsten filament lamp opera- ted at a distribution temperature of 2856K. Supply voltage is 150 volts between the cathode and all other electrodes connected together as an anode. The value is cathode output current when a blue filter (Corning CS No. 5-58 polished to 1/2 stock thickness) is interposed between the light source and the tube under the same condition as Note B. Measured with the same light source as Note B and with the anode-to-cathode supply voltage and voltage distribution ratio shown in Table 1. Measured with the same supply voltage and vol- tage distribution ratio as Note D at 30 minutes af- ter removal of light. The rise time is the time for the output pulse to rise from 10 % to 90 % of the peak amplitude when the entire photocathode is illuminated by a delta func- tion light pulse. The electron transit time is the interval between the arrival of a delta function light pulse at the en- trance window of the tube and the time the output pulse reaches the peak amplitude. In measure- ment the entire photocathode is illuminated. In the case of R2486 NOTES A: B: C: D: E: F: G: H: Supply Voltage: 1250 V dc, K: Cathode, Dy: Dynode, P: Anode Electrodes Distribution Ratio K Dy1 1 Dy2 1 Dy3 1 Dy4 Dy5 1 Dy6 1 Dy7 11 Dy8 Dy9 Dy10 Dy11 Dy12 P 11 11 1 1 2 Cathode Sensitivity Anode Sensitivity D Gain D Anode Dark Current E Time Response D 80 72 9.0 23 40 36 × 103 5.0 × 105 20 5.5 17 µA/lm mA/W — % A/lm A/W — nA ns ns Luminous B Radiant at 420 nm Blue Sensitivity index (CS 5-58) C Quantum Efficiency at 390 nm (peak) Luminous Radiant at 420 nm Rise Time F Electron Transit Time G Parameter Value Unit |
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