GENERAL
Parameter
Description/Value
Unit
Spectral Response
Wavelength of Maximum Response
Photocathode
Window Material
Dynode
Direct Interelectrode
Capacitances
Base
Weight
Suitable Socket
nm
nm
--
mm dia.
--
--
--
pF
pF
--
g
--
160 to 650
420
Bialkali
8
Fused silica
Linear focused
8
0.7
2.0
11-pin glass base
Approx. 5
E678-11N (supplied)
Material
Minimum Useful Area
Structure
Number of Stages
Anode to Last Dynode
Anode to All Other Electrodes
PHOTOMULTIPLIER TUBE
R2496
MAXIMUM RATINGS (Absolute Maximum Values)
Information furnished by HA MAM ATS 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.
Subject to local technical requirements and regulations, availability of products included in this promotional material may var y. Please consult with our sales office.
For Positron CT Scanner Using BaF
2
Scintillator
10mm (3/8 Inch) Diameter, 8-Stage, Head-On, Bialkali Photocathode
CHARACTERISTICS (at 25
C)
Parameter
Min.
Unit
Parameter
Value
Unit
Supply Voltage
Average Anode Current
Ambient Temperature
1500
0.03
-80 to +50
Vdc
mA
C
Between Anode and Cathode
Cathode Sensitivity
Anode Sensitivity
Gain
Anode Dark Current (after 30 min. storage in darkness)
Time Response
Luminous (2856K)
Radiant at 420nm
Blue
Luminous (2856K)
Radiant at 420nm
Anode Pulse Rise Time
Electron Transit Time
60
--
--
30
--
--
--
--
--
95
76
9.5
100
8.0
10
4
1.1
10
6
2
0.7
9.0
A/lm
mA/W
A/lm-b
A/lm
A/W
--
nA
ns
ns
--
--
--
--
--
--
50
--
--
Typ.
Max.
Supply Voltage: 1250Vdc, K: Cathode, Dy: Dynode, P: Anode
VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Electrodes
Distribution Ratio
K
Dy1
3
Dy2
1.5
Dy3
1.5
Dy4
1
Dy5
1
Dy6
1
Dy7
1
Dy8
1
P
1
FEATURES
Coincidence Resolving Time
with BaF
2
-BaF
2
/
22
Na ........................................................................................................................................................... 0.45ns
Fast Time Response
Transit Time Spread (FWHM) .............................................................................................................................................. 0.6ns
Quantum Efficiency at 225nm ................................................................................................................................................... 18%
PHOTOMULTIPLIER TUBE R2496
Figure 1: Typical Spectral Response
TPMH1229E01
SEPT. 1998
HAMAMATSU PHOTONICS K.K., Electoron Tube Center
314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 438-0193, Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P. O. Box 6910, Bridgewater. N.J. 08807-0910, U.S.A., Telephone: (1)908-231-0960, Fax: (1)908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10
United Kingdom: Hamamatsu Photonics UK Limited: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone: (44)181-367-3560, Fax: (44)181-367-6384
North Europe: Hamamatsu Photonics Norden AB: Frgatan 7, S-164-40 Kista Sweden, Telephone: (46)8-703-29-50, Fax: (46)8-750-58-95
Italy: Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741
TPMHB0566EA
Figure 2: Typical Gain Characteristics
TPMHB0567EA
Figure 3: Dimensional Outline and Basing Diagram (Unit: mm)
TPMHA0442EA
TACCA0043EA
Socket
(E678-11N)
4.3
9.5
10.5
11
3
3
9.5
100
10
1
0.1
0.01
200
600
800
400
WAVELENGTH (nm)
CA
THODE RADIANT
SENSITIVITY
(mA/W)
QUANTUM EFFICIENCY
(%)
CATHODE
RADIANT
SENSITIVITY
QUANTUM
EFFICIENCY
1
2
3
4
5
6
7
8
9
10
11
IC
DY1
DY3
DY5
DY7
P
DY8
DY6
DY4
DY2
K
SHORT PIN
FACEPLATE
PHOTOCATHODE
11 PIN BASE
8MIN.
10MAX.
45.0
1.5
10.5
0.5
10
7
10
6
10
5
10
4
10
3
500
1000
700
1500
2000
SUPPLY VOLTAGE (V)
GAIN
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