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R1250 Datasheet

  • R1250

  • PHOTOMULTIPLIER TUBE

  • 2頁

  • HAMAMATSU

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PHOTOMULTIPLIER TUBE
R1250
For High Energy Physics, Fast Time Response, High Pulse Linearity
127mm (5 Inch) Diameter, Bialkali Photocathode, 14-Stage, Head-on Type
GENERAL
Parameter
Spectral Response
Wavelength of Maximum Response
Material
Photocathode
Minimum Useful Diameter
Material
Window
Structure
Dynode
Number of Stages
Base
Suitable Socket
Description/Value
300 to 650
420
Bialkali
120
Borosilicate glass
Linear focused
14
20-pin base
E678-20A (supplied)
Value
3000
500
0.2
-30 to +50
Unit
nm
nm
鈥?/div>
mm dia.
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Unit
Vdc
Vdc
mA
擄C
Max.
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
300
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Unit
碌A(chǔ)/lm
碌A(chǔ)/lm-b
%
A/lm
A/lm-b
鈥?/div>
nA
ns
ns
ns
%
%
%
%
%
MAXIMUM RATINGS (Absolute Maximum Values)
Supply Voltage
Average Anode Current
Ambient Temperature
Parameter
Between Anode and Cathode
Between Anode and Last Dynode
CHARACTERISTICS (at 25擄C)
Cathode Sensitivity
Anode Sensitivity
Parameter
Luminous (2856K)
Blue (with CS 5-58 filter)
Quantum Efficiency at 390nm
Luminous (2856K)
Blue (with CS 5-58 filter)
Min.
55
7.0
鈥?/div>
300
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Typ.
70
9.0
22
1000
130
1.4
10
7
50
2.5
54
1.2
8.3
1.0
1.0
160
250
Gain
Anode Dark Current (after 30min. storage in darkness)
Anode Pulse Rise Time
Time Response
Electron Transit Time
Transit Time Spread
Pulse Height Resolution with
137
Cs
Long Term
Gain Deviation
Short Term
2% Deviation
Pulse Linearity *
5% Deviation
* Measured with special voltage distribution ratios shown in the Table 2.
Table 1: VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
K
G1
G2
Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 Dy12 Dy13 Dy14 P
Electrode
Ratio
2.5
7.5
0
1.2
1.8
1
1
1
1
1
1
1
1
1.5
1.5
3
2.5
Supply Voltage: 2000Vdc, K: Cathode, Dy: Dynode, P: Anode, G: Grid
Table 2: SPECIAL VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
FOR PULSE LINEARITY MEASUREMENT
Electrode
K
G1
G2
Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 Dy12 Dy13 Dy14 P
Ratio
2.5
7.5
0
1.2
1.8
1
1
1
1
1.2
1.5
2
2.8
4
5.7
8
5
Capacitors in
碌F
0.01 0.01 0.02 0.02 0.02 0.04 0.06
Supply Voltage: 2500Vdc, K: Cathode, Dy: Dynode, P: Anode, G: Grid
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.
1999 Hamamatsu Photonics K.K.

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