TENTATIVE DATA
Jun.2000
PHOTOMULTIPLIER TUBE
R7899 / R7899-01
For Scintillating Tile Calorimeter, Scintillation Counting
25 mm( 1 Inch) Diameter, Bialkali Photocathode, 10 stage, Head-on Type
GENERAL
Parameter
Description
unit
Spectral Response
300 to 650
nm
Wavelength of Maximum Response
420
nm
Material
Bialkali
-
Photocathode
Minimum Effective Area
22
mm dia.
Window Material
Borosilicate glass
-
Structure
Linear focused
-
Dynode
Number of stages
10
-
Base
14 pin glass base
-
Suitable Socket
E678-14C (supplied)
-
MAXIMUM RATING (Absolute Maximum vales)
Parameter
Value
Unit
Between Anode and Cathode
1800
V
Supply voltage
Between Anode and Last Dynode
400
V
Average Anode Current
0.1
mA
Ambient Temperature
-80 to +50
o
C
CHARACTERISTICS (at 25
o
C) with Standard Voltage Divider
Parameter
Min.
Typ.
Max.
Unit
Luminous( 2856 K)
70
95
-
A/lm
Quantum Efficiency at 420nm
-
27
-
%
Cathode Sensitivity
Blue(CS 5-58 filter)
-
11
-
A/lm-b
Anode Sensitivity
Luminous( 2856 K)
-
190
-
A/lm
Gain
-
2
X
10
6
-
-
Anode Dark Current(after 30 min. storage in darkness)
-
2
15
nA
Anode Pulse Rise time
-
1.6
-
ns
Electron Transit Time
-
17
-
ns
Time Response
Transit Time Spread(T.T.S.)
-
0.6
-
ns
Pulse Linearity at
2 % deviation
-
30
-
mA
NOTE: Anode characteristics are measured with a voltage distribution ratio shown below :
Standard Voltage Divider and Supply Voltage
Electrodes
K
Dy1
Dy2
Dy3
Dy4
Dy5
Dy6
Dy7
Dy8
Dy9 Dy10
P
Ratio
3
1
1.5
1
1
1
1
1
1
1
1
Supply Voltage: 1250 V, K: Cathode, Dy: Dynode, P: Anode,
PHOTOMULTIPLIER TUBE R7899 / R7899-01
CHARACTERISTICS (at 25
o
C) with Tapered Voltage Divider
Parameter
Min.
Typ.
Max.
Unit
Luminous( 2856 K)
70
95
-
A/lm
Quantum Efficiency at 420 nm
-
27
-
%
Cathode Sensitivity
Blue(CS 5-58 filter)
-
11
-
A/lm-b
Anode Sensitivity
Luminous( 2856 K)
-
160
-
A/lm
Current Amplification
-
1.7
X
10
6
-
-
Anode Dark Current(after 30 min. storage in darkness)
-
2
20
nA
Anode Pulse Rise time
-
1.6
-
ns
Electron Transit Time
-
16
-
ns
Time Response
Transit Time Spread(T.T.S.)
-
0.7
-
ns
Pulse Linearity at
2 % deviation
-
100
-
mA
NOTE: Anode characteristics are measured with a voltage distribution ratio shown below :
Tapered Voltage Divider and Supply Voltage
Electrodes
K
Dy1
Dy2
Dy3
Dy4
Dy5
Dy6
Dy7
Dy8
Dy9 Dy10
P
Ratio
3
1
1.5
1
1
1
1
1
2
3
2
Supply Voltage: 1500 V , K: Cathode, Dy: Dynode, P: Anode,
DIMENSIONAL OUTLINE AND BASING DIAGRAM
(R7899)
(R7899)
(R7899)
(R7899)
PDF 
ZIP