HAMAMATSU H7422-50, H7422-40, H7422-20, H7422-02, H7422-01 Datasheet

Metal Package PMT with Cooler

Photosensor Modules H7422 Series

The H7422 series are photosensor modules with an internal high-voltage power
supply circuit and a cooler installed to the metal package photomultiplier tube. Effi­cient cooling was achieved by placing the cooler near the photomultiplier tube to
reduce thermal noise emitted from the photocathode and a high S/N ratio can be
obtained even at extremely low light levels.
The H7422-40 has high sensitivity in the 300 nm to 720 nm wavelengths. The
H7422-50 is sensitive along a wide spectral range from 380 nm to 890 nm. The
H7422-01, H7422-02 and H7422-20 have a maximum output current value of 100
µA and so are extremely effective when measurements are needed over a wide
dynamic range. The photomultiplier tube is maintained at a constant temperature
by monitoring the output from a thermistor installed near the photomultiplier and

Heatsink with fan (A7423) sold separately

Product Variations

Type No.

H7422-40
H7422P-40
H7422-50
H7422P-50
H7422-01
H7422-02
H7422-20

Spectral Response

300 nm to 720 nm

380 nm to 890 nm

300 nm to 850 nm
300 nm to 870 nm
300 nm to 890 nm

Max. Output Signal Current

then regulating the current to the thermoelectric cooler.

Features

GaAsP photocathode, QE 40 % at peak

2 µA

wavelength, high gain (P type)
GaAs photocathode, QE 12 % at peak
wavelength, high gain (P type)
Multialkali photocathode

100 µA

Infrared-extended multialkali photocathode
Infrared-extended high-sensitivity multialkali photocathode

For photon counting

For photon counting

Specifications

Series

Parameter

Suffix

-40

-50
Input Voltage
Max. Input Voltage for Main Unit
Max. Input Current

for Main Unit

62
Max. Input Voltage for Thermoelectric Cooler
Max. Input Current for Thermoelectric Cooler
Max. Output Signal Current
Max. Control Voltage
Recommended Control Voltage Adjustment Range
Effective Area
Sensitivity Adjustment Range
Peak Sensitivity Wavelength

420 nm

Radiant Sensitivity

CathodeAnode

Radiant Sensitivity *

Dark Current

Ty p e

Standard

*

Radiant Sensitivity *

Dark Count

P Type

Rise Time *

1

2

*

Ripple Noise *1 *4 (peak to peak)
Settling Time *

5

1 *2

3

*

550 nm
800 nm

1

550 nm
Ty p.
Max.

3

550 nm
Ty p.
Max.

Max.

580
108
176

—

8.8 × 10

0.4

1.0

1.8 × 10
100
300

2

+0.5 to +0.8

5

1: 50

4

2.5 × 10

5

5.0 × 10

1.00

+0.9 (Input impedance 100 kΩ)

800

15
50
90

0.5

1.3

125
375

Operating Ambient Temperature
Storage Temperature
Weight

*1:

Control voltage = +0.8 V PMT setting temperature 0 °C, used with C8137-02 and A7432
*3: Plateau voltage, PMT setting temperature
*4: Cable RG-174/U, Cable length 450 mm,
*5: The time required for the output to reach a stable level following a change in the control voltage from +1.0 V to +0.5 V.

18

0 °C, used with C8137-02 and A7423

Load resistance = 1 MΩ, Load capacitance = 22 pF

H7422

+11.5 to +15.5

4

1.8 × 10

4

+5 to +35

-20 to +50

Approx. 400

-01

-02

+18

30

2.6

2.2
100

+0.25 to +0.8

7

4

1: 10

400

56
36

1.2

4

0.03

0.08
—
—
—

500

40
56

6.4

2.8 × 10

0.08

0.2
—
—
—

4

0.78

0.6

0.2

*2: After 30 minute storage in darkness

-20

630

40
72
46

3.6 × 10

0.1

0.25
—
—
—

Unit

—

V
V

mA

V
A

µA

V
V

mm

—

nm

mA/W

4

A/W

nA

A/W

-1

s

ns

mV

s

°C
°C

g

Cooling Specifications

Current Output Type Photosensor Modules

Parameter

Cooling Method

6

Max. Cooling Temperature
Cooling Time *

*6:

Input current to thermoelectric cooler=2.0 A

6

(∆T) *

H7422 Series Unit

Thermoelectric cooling

35

Approx. 5

Characteristics (Cathode radiant sensitivity, Gain)

TPMOB0135EB TPMOB0136EA TPMOB0137EB

1000

100

H7422-40

10

1

H7422-01

H7422-02

H7422-50

H7422-20

CATHODE RADIANT SENSITIVITY (mA/W)

0.1
200 400 600 800 1000

WAVELENGTH (nm)

8

10

7

10

H7422P-40/-50

6

10

H7422-40/-50

5

10

GAIN

4

10

3

10

2

10

0.25 0.50.3 0.7 1.0 1.5

CONTROL VOLTAGE (V)

2.0

8

10

7

10

6

10

H7422-01/-02/-20

5

10

GAIN

4

10

3

10

2

10

0.25 0.50.3 0.7 1.0 1.5 2.0

CONTROL VOLTAGE (V)

—

°C

min

Block Diagram Dimensional Outlines (Unit: mm)

POWER INPUT

POWER INPUT for
THERMOELECTRIC
COOLER

THERMO­ELECTRIC
COOLER

THERMISTOR

PMT

HV POWER SUPPLY

VOLTAGE DIVIDER

CIRCUIT

Vcc

GND

SIGNAL OUTPUT
(CURRENT OUTPUT)

CONTROL VOLTAGE INPUT
(H7422-01, -02, -20: +0.25 V to +0.8 V)
(H7422-40, -50: +0.5 V to +0.8 V)

TPMOC0144EB

O-RING GROOVE
(S-28 O-RING INCLUDED)

9.5 ± 0.1

44.0 ± 0.2

56.0 ± 0.3

M25.4 P = 1/32"
C-MOUNT

8-M3 DEPTH: 2

18.5 ± 0.2 22.2 ± 0.2

4-M3B4-M2 DEPTH: 2

20.0 ± 0.2

36.0 ± 0.3

PHOTOCATHODE B

8-M3CA

20.0 ± 0.2

A

19.0 ± 0.2

25.0 ± 0.2

H7422-40/-50

A

16.3 ± 0.2

B

5

TAJIMI PRC03-23A10-7M

53.6 ± 0.225.4 ± 0.2

TOP VIEW

104 ± 1

SIDE VIEWFRONT VIEW

H7422-01/-02/-20

15.3 ± 0.3
7

SIGNAL OUTPUT
BNC-R

ACROSS SECTION

WINDOW

26.0 ± 0.2

15.0 ± 0.2

TAJIMI PRC03-23A10-7M

10.2

C-MOUNT

M25.4 P=1/32"

4.0 ± 0.1

6.4 ± 0.2

7.4 ± 0.2

B

CROSS SECTIONCCROSS SECTION

6.5 ± 0.2

M3
DEPTH: 4.0 Max.

GUIDE MARK

FA

G

EB

D

C

PHOTOCATHODE

7.2

PMT

14.8 ± 0.2

A

2.0
± 0.2

M3
DEPTH: 4.0 Max.

A: THERMISTOR 1
B: THERMISTOR 2
C: THERMOELECTRIC
COOLER +
D: THERMOELECTRIC
COOLER –
E: Vcc LOW VOLTAGE
INPUT(+15 V)
F: CONTROL VOLTAGE
INPUT
(H7422-01, -02, -20:
+0.25 V to +0.8 V)
(H7422-40, -50:
+0.5 V to +0.8 V)
G: GND

TPMOA0024EC

19