F2813-22 查看數據表（PDF） - Hamamatsu Photonics

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F2813-22

RECTANGULAR MCP AND ASSEMBLY SERIES

Hamamatsu Photonics 

OPERATING PRINCIPLE

As shown in the figure, when a voltage VD is supplied 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 logarithmic multiplication of the

electron current appearing at the output.

• MCP Configuration

PRIMARY

ELECTRON

CHANNEL WALL

STRIP CURRENT

OUTPUT

ELECTRON

VD

CURRENT GAIN AND LIFE CHARACTERISTICS

• Current Gain vs. Supply Voltage

• Life

TMCPB0029EA

105

TMCPB0030EC

1.0

TMCPC0030EA

104

0.5

103

SUPPLY VOLTAGE : 1000 V

OUTPUT CURRENT DENSITY : 50 nA/ 15 mm

102

600

800

1000

1200

SUPPLY VOLTAGE (V)

0

10–4

10–3

10–2

10–1

ACCUMULATED CHARGE OF OUTPUT SIGNAL (C/cm2)

s PRECAUTIONS FOR USE

• Don’t touch the MCP and assembly parts with bare hands.

• Always handle the MCP in an area that is maintained at the same level of cleanliness as a clean room since dust and

humidity may adversely affect MCP characteristics.

• The MCP should be kept in vacuum or nitrogen atmosphere when storing it after delivery.

• If excessive outgas from the MCP occurs, perform vacuum-baking of the MCP at +350°C maximum in an evacuating

system. Alternatively, electron bombarding of the MCP is effective. (Please consult our sales office for details.)

• The MCP and MCP assemblies must be operated in a vacuum below 1.3 × 10-3 Pa (1 × 10-5 Torr). However, phosphor

output MCP assemblies and other assemblies using a three-stage MCP should be operated in a vacuum below

1.3 × 10-4 Pa (1 × 10-6 Torr).

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