HAMAMATSU R1250 Datasheet

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 Description/Value Unit

Spectral Response
Wavelength of Maximum Response

Photocathode
Window
Dynode
Base

Suitable Socket

Material
Minimum Useful Diameter
Material
Structure
Number of Stages

MAXIMUM RATINGS (Absolute Maximum Values)

Parameter Value Unit

Supply Voltage
Average Anode Current

Ambient Temperature

Between Anode and Cathode
Between Anode and Last Dynode

300 to 650

420

Bialkali

120

Borosilicate glass

Linear focused

14

20-pin base

E678-20A (supplied)

3000

500

0.2

-30 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

Pulse Height Resolution with
Gain Deviation

Pulse Linearity *

* Measured with special voltage distribution ratios shown in the Table 2.

Blue (with CS 5-58 filter)
Quantum Efficiency at 390nm
Luminous (2856K)
Blue (with CS 5-58 filter)

Anode Pulse Rise Time
Electron Transit Time
Transit Time Spread

137

Cs
Long Term
Short Term
2% Deviation
5% Deviation

55

7.0
—

300

—
—
—
—
—
—
—
—
—
—
—

Typ. Max.

70

9.0
22

1000

130

1.4 × 10

7

50

2.5
54

1.2

8.3

1.0

1.0

160
250

Table 1: VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE

K Dy10Dy2

Electrode
Ratio

Supply Voltage: 2000Vdc, K: Cathode, Dy: Dynode, P: Anode, G: Grid

G1

2.5G27.5

1.2

1.8

Dy3

Dy41Dy51Dy61Dy71Dy81Dy9

Dy10 Dy11 Dy12

111

Table 2: SPECIAL VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
FOR PULSE LINEARITY MEASUREMENT

Electrode
Ratio
Capacitors in µF

Supply Voltage: 2500Vdc, K: Cathode, Dy: Dynode, P: Anode, G: Grid

K Dy10Dy2

G1

2.5G27.5

1.2

1.8

Dy3

Dy41Dy51Dy61Dy71Dy8

Dy9

Dy10 Dy11 Dy124Dy13

1.2

1.5 2 2.8

0.01 0.01 0.02 0.02 0.02 0.04 0.06

—
—
—
—
—
—

300

—
—
—
—
—
—
—
—

1.5

1.5 3 2.5

5.7 8 5

Dy13

µA/lm

µA/lm-b

%

A/lm

A/lm-b

—

nA

ns
ns
ns

%
%
%
%
%

Dy14 P

Dy14 P

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, 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.

©

PHOTOMULTIPLIER TUBE R1250

Figure 1: Typical Spectral Response

TPMHB0518EA

100

10

QUANTUM
EFFICIENCY

WAVELENGTH (nm)

QUANTUM EFFICIENCY (%)

CATHODE RADIANT SENSITIVITY (mA/W)

0.1

0.01

1

200 400 600 800

CATHODE
RADIANT
SENSITIVITY

Figure 2: Typical Gain Characteristics

TPMHB0519EA

9

10

8

10

7

10

6

10

GAIN

5

10

4

10

3

10

500 700 1000 1500 2000 3000

SUPPLY VOLTAGE (V)

Figure 3: Dimensional Outline and Basing Diagram (Unit: mm)

133 ± 2

FACEPLATE

PHOTO­CATHODE

HA COATING

20 PIN BASE
JEDEC
No. B20-102

120MIN.

52.5MAX.

DY14

P

IC

DY13

8

DY11

7

DY9

6
5

DY7

259 ± 5

276 ± 5

DY5

DY3

G2 & DY1

4

3

2

IC K

10

91112

20

1

DY12

DY10

13

DY8

14

15

16

17

18

IC

19

G1

TPMHA0018EA TACCA0003EA

DY6
DY4

DY2

6

10

Socket

(E678-20A)

20

58

52.5

13

21

52
56

HAMAMATSU PHOTONICS K.K., Electron Tube Center

HOMEPAGE URL http://www.hamamatsu.com

314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 438-0193, Japan, Telephone: [phone], Fax: [phone]

U.S.A.:

Hamamatsu Corporation: 360 Foothill Road, P. O. Box 6910, Bridgewater. N.J. 08807-0910, U.S.A., Telephone: [phone], Fax: [phone]

Germany:

Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: [phone], Fax: [phone]

France:

Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: [phone], Fax: [phone]

United Kingdom:
North Europe:
Italy:

Hamamatsu Photonics UK Limited: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone: [phone], Fax: [phone]

Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171-41 SOLNA, Sweden, Telephone: [phone], Fax: [phone]

Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: [phone], Fax: [phone]

TPMH1213E02
DEC. 1999