Datasheet F2224-31, F2224-29P, F2224-29M, F2224-24S, F2224-24P Datasheet (HAMAMATSU)

CIRCULAR MCP AND
ASSEMBLY SERIES

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. ©1999 Hamamatsu Photonics K.K

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A microchannel plate (MCP) is a secondary-electron mul­tiplier which detects and amplifies electrons in two-dimen­sions. The MCP is sensitive not only to electrons but to ions,
vacuum ultraviolet light, X-rays and γ-rays, making it useful in
a wide range of detection applications.
Hamamatsu has available seven types of circular MCPs,
ranging in outer diameter from 18mm to 114mm. MCP as­semblies with electrode leads are also available to facilitate
use of the MCPs. These MCP assemblies offer three types
of read-out devices; a phosphor screen (optical image con­version), a multi-anode (electrical output signals responding
to the position of the incident signals), and a single-anode
(an electrical output signal within the effective area), provid­ing a variety of readout functions to handle a range of appli­cations. From one to three MCPs can be selected as re­quired to provide the necessary electron gain.
These MCPs and MCP assemblies are finding wide appli­cation in fields including image intensifiers, fast time re­sponse photomultiplier tubes, and analytical instruments.

FEATURES

•

Sensitive to electrons, ions, VUV lights, X-rays and γ-rays

•

Two-dimensional image intensification

•

Fast time response

•

Immunity to magnetic fields

•

Small size and lightweight

APPLICATIONS

•

Analytical Instruments

• Electron Beam Measuring System (EBMS)

• FIM, AP-FIM

• ESCA

• Mass Spectrometer (MS)

• TOF-MS

• LEED, MEED, etc.

•

Electron Tube

• Image Intensifier

• Fast Time Response PMT

• Streak Camera

•

Cosmic Measurement

• Detection of Plasma Ions, Soft X-rays and VUV lights

•

High Energy Physics

• Detection of Ions, Electrons, Positrons, High Energy
Particles and X-rays

CIRCULAR MCP SERIES

MCP DIMENSIONAL OUTLINES (Unit: mm)

A

B

C

INDICATOR

EFFECTIVE
AREA

INPUT SIDE OUTPUT SIDE

ELECTRODE

D

θ

TMCPA0025EB

Outer Diameter
Electrode Diameter
Effective Diameter
Thickness
Channel Diameter
Channel Pitch
Bias Angle
Open Area Ratio
Electrode Material

Parameter

Type No.

17.9
17

14.5

0.48
12
15

8

24.8

23.9
20

0.41
10
12

5,15

32.8

31.8
27

8,12

38.5

36.5
32

60

Inconel

49.9
49
42

0.24
6

7.5
13

0.48
12
15

5,8,15

0.41
10
12

0.48
12
15

0.48
12
15

8

86.7

84.7
77

114
112
105

mm
mm
mm
mm

µm
µm

degrees

%
—

—

MΩ

A/cm

3

—

V

°C
°C

F2395

Unit

F1942

-04

F1217F1208

-01

F1552F1094

-09

F1551

-01 -07 -01 -09 -01

1.00
25
31

8

A
B
C
D

θ

Gain
Plate Resistance
Dark Current
Max. Linear Output Signal

100 to 700 50 to 500 30 to 300

More than 10

4

20 to 200

Less than 5 × 10

-13

Up to 7% of the strip current

10 to 200 10 to 100 5 to 50

Supply Voltage
Ambient Temperature
Baking Temperature

1000 (Channel Diameter: 6µm, 10µm, 12µm): 1200 (Channel Diameter: 25µm)

-50 to +70
400

-50 to +30

ELECTRICAL CHARACTERISTICS

(Supply Voltage: 1000V, Vacuum: 1.3 × 10-4 Pa (1 × 10-6 Torr), Ambient Temperature: +25°C)

MAXIMUM RATINGS

This indicator shows the MCP input side and the direction of channel bias.
The strip current is the current which flows along the channel wall when a voltage is applied between the MCP input and output and is given by applied
voltage/plate resistance.
At a vacuum of 1.3 × 10

-4

Pa (1 × 10-6 Torr) or less.

Consult us for more details on MCP dimensions and tolerances.

RELATIVE OUTPUT

ACCUMULATED CHARGE OF OUTPUT SIGNAL (C / cm2)

SUPPLY VOLTAGE: 1000V
OUTPUT CURRENT DENSITY: 50nA/ 15mm

10

-4

10

-3

10

-2

10

-1

0.5

0

1.0

600

10

2

10

3

10

4

10

5

800 1000

SUPPLY VOLTAGE (V)

GAIN

OPERATING PRINCIPLE

As shown in the figure, when a voltage VD is applied across
the input-side and output-side electrodes of the MCP, a po­tential gradient is built up along the channel direction. If an
incident electron strikes an inner wall on the input side, a
number of secondary electrons are emitted. These second­ary electrons are accelerated by the potential gradient and
travel along a parabolic path determined by the initial veloc­ity. They then collide with the opposing wall surface, causing
secondary electrons to be emitted again. In this manner, the
electrons collide repeatedly within the channel as they pass
towards the output side. The result is a large multiplication of
the incident electron.

MCP CONFIGURATION

CHANNEL WALL

STRIP CURRENT

V

D

OUTPUT
ELECTRONS

PRIMARY
ELECTRON

TMCPC0002EC

GAIN AND LIFE CHARACTERISTICS

• Gain vs. Supply Voltage • Life

TMCPB0031EB

TMCPB0030EC

3

3

E

D

A
B
C

45

MCP-IN LEAD

ANODE OR
PHOSPHOR SCREEN LEAD

4- 4.5

4- 3.5

20

MCP-OUT LEAD

INSULATOR(Al

2O3

)

NUT M2(SUS304)

SUBSTRATE
(SUS304)

READ-OUT
DEVICE

DEGASSING
SPACE

LEAD (SUS)

1.0

MCP

L

F

G

K

J

H

READ-OUT
REPLACEMENT RING

ASSEMBLY DIMENSIONS (Unit: mm)

TMCPA0026EB

Demountable Type Series (The MCP and the Read-Out Device Can be Easily Replaced)

MCP ASSEMBLIES

Note: SUS and SUS304 are stainless steels of Japanese Industrial Standards (JIS) code.

Assembly Outer Diameter
Mounting Screw Hole Pitch
Insulator Outer Diameter
Assembly Screw Pitch
MCP Effective Diameter
Readout Device Effective Diameter
Maximum Height
Replacement Ring Screw Diameter for Readout Device
Replacement Ring Inside Diameter for Readout Device

Distance from Bottom of Substrate to
Insulator Surface

Distance from MCP Input Surface to
Insulator Surface

A
B
C
D
E
F
G
H

J

K

L

ParameterCode

54
46
34
26

14.5
10

15

M19

13

(Number of MCP stages)
Single-stage: 10.9
Two-stage : 11.9
Three-stage: 11.9
(Number of MCP stages)

Single-stage:
Two-stage :
Three-stage:

61
53
41
33
20
17

15

M26

20

69
61
49
41
27
24

15

M33.8

27

75
67
55
47
32
30

15

M39.5

33

10µm

2.9

3.5

3.1

86
78
66
58
42
40

15

M51

44

(Channel diameter)

12µm

2.8

3.3

2.9

123
115
103

95
77
75

17

M88

78

12.9

14.4

15.9

25µm

3.8

4.3

4.8

F2226 UnitF2225F2224F2223F2222F2221

mm
mm
mm
mm
mm
mm
mm

—

mm

—
mm
mm
mm

—

—
mm
mm
mm

WITHOUT ANODE

WITH ANODE

EYELET

EYELET

EYELET

(Bottom View)

MCP-IN LEAD: 4pcs.
MCP-OUT LEAD: 2pcs.

TWO EYELETS

EYELET

30

0.7LEAD

0.7

MCP

A

B

C

D

30MIN.

EYELET

0.7LEAD

0.7

ANODE

A

B

C

E

30MIN.

MCP-OUT ELECTRODE

MCP-IN
ELECTRODE

EYELET

EYELET

(Bottom View)

MCP-IN LEAD: 4pcs.
MCP-OUT LEAD: 2pcs.
ANODE LEAD: 2pcs.

TWO EYELETS

EYELET

30

MCP

ASSEMBLY DIMENSIONS (Unit: mm)

TMCPA0027EB

Non-Demountable Type Series (Compact and Lightweight)

Assembly Outer Diameter
Lead Pin Circle
MCP Effective Diameter

Assembly Height

Parameter

Type No.

27

22.5

14.5

34

29.5
20

42

37.5
27

49
44
32

62
56
40

F1217 UnitF1208F1552F1094F1551

A
B
C

mm
mm
mm

mm

mm

(Number of MCP stages)
Single-stage: 3
Two-stage : 4.2
Three-stage: 4.2

(Number of MCP stages)
Single-stage: 4.5
Two-stage : 5.7
Three-stage: 5.7

D

without

anode

E

with

anode

10

4

10

3

600 800 1000 1200

SUPPLY VOLTAGE PER STAGE (V)

10

5

10

6

10

7

10

8

SINGLE­STAGE

TWO­STAGE

THREE­STAGE

GAIN

PULSE HEIGHT

TWO-STAGE THREE-STAGE

RELATIVE COUNTS

MCP ASSEMBLIES

Characteristics of MCP Assemblies

• Typical Gain and Pulse Height Distribution
Characteristics Comparision for Different Stage MCP

TMCPB0033EB

• Typical Pulse Height Distributions for Two-and
Three-Stage MCP

TMCPB0034EA

At a vacuum of 1.3 × 10-5 Pa (1 × 10-7 Torr) and an ambient temperature of +25°C.

The phosphor screen read-out type assemblies should be operated in a vacuum below 2.6 × 10

-5

Pa (2 × 10-7 Torr).

The phosphor screen read-out type is not available for non-demountable type or three-stage series.

Dark noise lower than the valley of pulse height distribution for the signal is not taken into account.

Channel Diameter
Read-Out Device

Parameter

MCP

10 to 25 (Refer to the table on page 2.)

Without read-out device, with single anode, multianode or phosphor screen (P-11, P-20, P-47)

Two-Stage Three-StageSingle-Stage

(µm)

(%)

Gain
Dark Noise
Pulse Height Resolution
Max. Linear Output Signal

10

6

Less than 3 s-1/cm2 (cps/cm2)

Less than 120

Up to 7% of the strip current

107 to 10

8

Less than 3 s-1/cm2 (cps/cm2)

Less than 80

10

4

Less than 5 × 10

-13

A/cm2

—

(V)
(V)
(V)
(V)

(°C)

MCP Supply Voltage
MCP

-OUT —

Anode Voltage

MCP

-OUT — Phosphor Screen Voltage

Substrate

— Other Terminals Voltage

Baking Temperature

2000
1000
4000
7000

350

30001000

530 to 560
50 to 2000

410

0.08

450
460

Wavelength at Peak Emission
Decay Time <10%>

Parameter

Phosphor type

P-20 P-47P-11

(nm)

(µs)

ELECTRICAL CHARACTERISTICS

(Supply Voltage: 1000V per stage, Vacuum: In the order of 1.3 × 10-5 Pa (1 × 10-7 Torr), Ambient Temperature: +25°C)

GENERAL

PHOSPHOR SCREEN EMISSION CHARACTERISTICS

MAXIMUM RATINGS

• Pulse Height Resolution

TMCPB0035EA

The pulse height resolution is defined as follows.

Pulse Height Resolution = × 100 (%)

FWHM (Full Width at Half Maximum)

Pulse Height Peak: A

FWHM

PULSE HEIGHT

COUNTS

A

h/2

h

WIRING EXAMPLES

(For assembly types, either MCP-IN, MCP-OUT, anode or phosphor screen can be ground potential)

TWO-STAGE MCP ANODE

2MΩ

0.1MΩ

+2.1kV Max.

-2kV Max.

-0.1kV

E

E

C

(3kV)

AMP.

A

TWO-STAGE MCP

ANODE

R

TWO-STAGE MCP

2MΩ

4MΩ

-6kV Max.

-2kV Max.

+4kV Max.

E

E E E

TWO-STAGE MCP

PHOSPHOR SCREEN

PHOSPHOR SCREEN

TMCPC0005EC

TMCPC0007EC

TMCP1007E04
DEC. 1999 IP
Printed in Japan (500)

CIRCULAR MCP AND ASSEMBLY SERIES

ORDERING INFORMATION (Type No. Designation)

•

Hamamatsu accepts order for special MCPs not in-

cluded in the standard line. Please specify the shape,
effective dimensions, thickness and the other param­eters.

•

Feel free to consult us on MCPs with an aperture (for

use with reflecting electron microscopes), Csl coating
(to increase quantum efficiency in the VUV to X-ray
range), aluminum coating (to prevent ion feedback),
MgO coating (to obtain high gain) and other special
type MCPs.

•

For multianode types, specify the desired anode pat-

tern.

•

Assemblies with a phosphor-coated fiber plate are

available to enable fiber coupling to solid state imag­ing devices (CCD and MOS Linear Image Sensor) and
position sensitive detectors (PSD).

•

Assemblies with the MCP, read-out device and termi-

nals mounted on vacuum flanges are also available.

SPECIAL MCPs AND ASSEMBLIES

•

Avoid touching the MCP or its assembly parts with

bare hands.

•

Handle the MCP only in a clean room since dust and

humidity may adversely affect MCP characteristics.

•

The MCP should be kept in vacuum or nitrogen atmo-

sphere if a long period of storage is contemplated.

•

When outgassing from the MCP occurs, baking the

MCP at 350°C maximum in an evacuating system is
recommended. In addition electron bombarding may
be effective.

•

The MCP should be operated in vacuum below 1.3 ×

10

-4

Pa (1 × 10-6 Torr).

PRECAUTIONS FOR USE

No Suffix: Without read-out device
S: Single anode
M: Multianode
P: Phosphor screen

Specify one from P-11,
P-20 and P-47

9: 10µm
1: 12µm
4: 25µm

1: Single-Stage
2: Two-Stage
3: Three-Stage

Second suffix: Channel diameter

Third suffix: Read-out device

F2224-21P

First suffix: Number of MCP mounted

Assembly type

Note: In ordering the MCP only, specify only the type No. of MCP

HAMAMATSU PHOTONICS K.K., Electron Tube Center
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:

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United Kingdom:

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

North Europe:

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

Italy:

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

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