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R2496 Schematic ( PDF Datasheet ) - Hamamatsu Corporation

Teilenummer R2496
Beschreibung PHOTOMULTIPLIER TUBE
Hersteller Hamamatsu Corporation
Logo Hamamatsu Corporation Logo 




Gesamt 2 Seiten
R2496 Datasheet, Funktion
PHOTOMULTIPLIER TUBE
R2496
For Positron CT Scanner Using BaF2 Scintillator
10mm (3/8 Inch) Diameter, 8-Stage, Head-On, Bialkali Photocathode
FEATURES
Coincidence Resolving Time
with BaF2-BaF2/22Na ........................................................................................................................................................... 0.45ns
Fast Time Response
Transit Time Spread (FWHM) .............................................................................................................................................. 0.6ns
Quantum Efficiency at 225nm ................................................................................................................................................... 18%
GENERAL
Parameter
Spectral Response
Wavelength of Maximum Response
Photocathode
Material
Minimum Useful Area
Window Material
Dynode
Structure
Number of Stages
Direct Interelectrode
Anode to Last Dynode
Capacitances
Anode to All Other Electrodes
Base
Weight
Suitable Socket
Description/Value
160 to 650
420
Bialkali
8
Fused silica
Linear focused
8
0.7
2.0
11-pin glass base
Approx. 5
E678-11N (supplied)
Unit
nm
nm
mm dia.
pF
pF
g
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Supply Voltage
Between Anode and Cathode
Average Anode Current
Ambient Temperature
CHARACTERISTICS (at 25°C)
Parameter
Luminous (2856K)
Cathode Sensitivity
Radiant at 420nm
Blue
Anode Sensitivity
Luminous (2856K)
Radiant at 420nm
Gain
Anode Dark Current (after 30 min. storage in darkness)
Time Response
Anode Pulse Rise Time
Electron Transit Time
Min.
60
30
VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Electrodes K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 P
Distribution Ratio 3 1.5 1.5 1 1 1 1 1 1
Supply Voltage: 1250Vdc, K: Cathode, Dy: Dynode, P: Anode
Value
1500
0.03
-80 to +50
Typ.
95
76
9.5
100
8.0 × 104
1.1 × 106
2
0.7
9.0
Max.
50
Unit
Vdc
mA
°C
Unit
µA/lm
mA/W
µA/lm-b
A/lm
A/W
nA
ns
ns
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
Information furnished by HAMAMATS U is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are
subject to change without notice. No patent rights are granted to any of the circuits described herein. © 1998 Hamamatsu Photonics K.K.





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