HAMAMATSU R8520-00-C12, R8520U-00-C12 Datasheet

POSITION SENSITIVE
PHOTOMULTIPLIER TUBES

PRELIMINARY DATA

OCT. 2001

FEATURES

■ 6 (X) + 6 (Y) Cross Plate Anode

■ Flangeless Type

■ High Speed Response

APPLICATIONS

■ PET (Positron Emission Tomography)

■ Compact Gamma Camera

■ Scintillation Mammography

GENERAL

Parameter

Spectral Response
Wavelength of Maximum Response

Photocathode

Window Material

Dynode

Anode
Weight
Suitable Socket

Material
Minimum Effective Area

Structure
Number of Stages

R8520-00-C12
R8520U-00-C12

Description Unit

300 to 650

420

Bialkali

22 × 22

Borosilicate glass

Metal channel dynode

11

6 (X) + 6 (Y) Cross plate anode

Approx. 28

E678-32B (sold separately)

nm
nm

—

mm

—
—
—
—

g

—

2

MAXIMUM RATINGS (Absolute Maximum Values)

Parameter

Supply Voltage
Average Anode Current in Total

Between Anode and Cathode

Value Unit

1000

0.1

CHARACTERISTICS (at 25 °C)

Parameter

Cathode Sensitivity

Anode Sensitivity
Gain
Anode Dark Current in Total of Anodes
(after 30 min storage in darkness)
Time Response

NOTE: Anode characteristics are measured with the voltage distribution ratio shown below.

Luminous (2856 K)
Blue Sensitivity Index (CS 5-58)
Luminous (2856 K)

Anode Pulse Rise Time

Min.

50

7
15
—

—

—

Typ.

70

8.5
70

1 × 10

2

1.4

6

Max. Unit

—
—
—
—

10

—

VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE

Electrodes
Ratio

Supply Voltage: 800 V dc, K: Cathode, G: Grid, Dy: Dynode, P: Anode

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 HAMAMATSU 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. ©2001 Hamamatsu Photonics K.K.

K Dy2Dy1G Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 P

210.5 1.5 1 1 1 1

1 1 1 1 0.5

V dc

mA

µA/lm

—

A/lm

—

nA

ns

POSITION SENSITIVE PHOTOMULTIPLIER TUBES R8520-00-C12, R8520U-00-C12

Figure 1: Typical Spectral Response

TPMHB0670EA

100

10

1

QUANTUM EFFICIENCY (%)

0.1

CATHODE RADIANT SENSITIVITY (mA/W)

0.01
100 200 300 400 500 600 700 800 900

QUANTUM
EFFICIENCY

WAVELENGTH (nm)

CATHODE
RADIANT
SENSITIVITY

Figure 2: Typical Gain and Anode Dark Current

TPMHB0671EA

8

10

7

10

6

10

5

10

GAIN

4

10

ANODE DARK CURRENT
IN TOTAL OF ANODES

3

10

2

10

1

10

400 600 1000800

SUPPLY VOLTAGE (V)

GAIN

-4

10

-5

10

-6

10

-7

10

-8

10

-9

10

ANODE DARK CURRENT (A)

-10

10

-11

10

Figure 3: Pulse Height Distribution

TPMHB0672EA

RELATIVE COUNTS

1000

200 300 400 500 600 700 800 900 1000

ADC CHANNEL

SUPPLY VOLTAGE
CRYSTAL
SOURCE
P.H.R.

: -800 V
: 1" CUBE Nal (Tl)

57

Co (122 keV)

:
: 16.9 %

Figure 4: Position Response Using PX-anodes

TPMHB0673EA

1200

1000

800

600

400

200

CALCULATED POSITION (channel)

0

-10-15

INCIDENT POSITION (mm)

SUPPLY VOLTAGE
LIGHT SOURCE

A STEP OF SCANNING

-5 0 5 10 15

: -800 V
: 2 mm × 2 mm × 20 mm BGO CRYSTAL
(irradiated by
: 0.5 mm

137

Cs)