HAMAMATSU R1450 Datasheet
Fast Time Response (Especially Low TTS)
For Positron CT and High Energy Physics
19mm (3/4 Inch) Diameter, 10-stage, Bialkali Photocathode, Head-On
GENERAL
Parameter Description/Value Unit
Spectral Response
Wavelength of Maximum Response
Photocathode
Window Material
Dynode
Base
MAXIMUM RATINGS (Absolute Maximum Values)
Supply Voltage
Average Anode Current
Ambient Temperature
Material
Minimum Useful Size
Structure
Number of Stage
Parameter Value Unit
Between Anode and Cathode
Between Anode and Last Dynode
PHOTOMULTIPLIER TUBE
R1450
300 to 650
420
Bialkali
15
Borosilicate glass
Linear focused
10
12-pin glass base
1800
350
0.1
-80 to +50
nm
nm
—
mm dia.
—
—
—
—
Vdc
Vdc
mA
°C
CHARACTERISTICS (at 25°C)
Parameter Min. Unit
Luminous (2856K)
Cathode Sensitivity
Anode Sensitivity
Gain
Anode Dark Current (after 30min. storage in darkness)
Time Response
Typical Pulse Height Resolution
Pulse Linearity
NOTE: Anode characteristics are measured with the voltage distribution ratio shown below.
Radiant at 420nm
Blue (CS-5-58 filter)
Luminous (2856K)
Anode Pulse Rise Time
Electron Transit Time
Transit Time Spread (FWHM)
Coincident Resolving Time/Scintillator
±2% Deviation
±5% Deviation
70
—
—
100
—
—
—
—
—
—
—
—
—
VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Electrodes
Ratio
Supply Voltage: 1500Vdc, K: Cathode, Dy: Dynode, P: Anode
K Dy12Dy21Dy3
1.5
Dy41Dy51Dy61Dy71Dy81Dy9
1 1 0.75
Dy10 P
Typ. Max.
115
88
11.0
200
1.7 × 10
0.6/CsF
6
3
1.8
19
0.76
7.8
4
8
—
—
—
—
—
50
—
—
—
—
—
—
—
µA/lm
mA/W
µA/lm-b
A/lm
—
nA
ns
ns
ns
ns
%
mA
mA
Subject to local technical requirements and regulat ions, availability of products included in this promotional material may va r y. Please consult with our sales office.
Information furnished by HAMA M ATSU is believed to be reliable. However, n o 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.
©
PHOTOMULTIPLIER TUBE R1450
Figure 1: Typical Spectral Response
TPMHB0528EA
100
10
QUANTUM
EFFICIENCY
1
QUANTUM EFFICIENCY (%)
0.1
CATHODE RADIANT SENSITIVITY (mA/W)
0.01
200 400 600 800
WAVELENGTH (nm)
CATHODE
RADIANT
SENSITIVITY
Figure 2: Typical Gain Characteristics
TPMHB0529EA
8
10
7
10
6
10
5
10
GAIN
4
10
3
10
2
10
500 700 1000 1500 2000
SUPPLY VOLTAGE (V)
Figure : Typical Output Waveform
TPMHB0582EA
20 (mV/div.)
5 (ns/div.)
SUPPLY VOLTAGE: -1500 (V)
RISE TIME: 1.775 (ns)
FALL TIME: 6.984 (ns)
LOAD RESISTANCE: 50 Ω
Figure 4: Typical Pulse Height Resolution
TPMHB0583EA
SUPPLY VOLTAGE = -1500 (V)
1000
500
RELATIVE COUNTS
100
0 200 300 400 500 600 700 800 900 1000
CHANNEL NUMBER (ch)
PHR = 18.50 (%)
SCINTILLATOR = BGO
1"Dia × 1" THICKNESS
SOURCE = Na-22 (511 keV)
PEAK CHANNEL = 514.4 (ch)
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