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Microchannel Plate
Date:2013/12/30 16:39:41   [back]

Microchannel Plate
Microchannel plates (MCPs) are flat glass discs containing millions of small diameter pores. They have been used for many years as compact electron multipliers: mainly in night vision image intensifier tubes. More recently, similar devices have been used to focus X-rays by reflection from the inside surfaces of the channels. These provide a compact, low mass, relatively inexpensive alternative to conventional X-ray focusing mirrors. The technology shows great potential for imaging in X-ray astronomy.

There are mainly two kinds of MCP’s available diameter 25mm and 18mm. The detailed specifications are below: 

Typical parameters
F25mm MCP
F18mm MCP
Plate Diameter
F32.7 ± 0.04   mm
F24.8 ± 0.04  mm
Useful Diameter
F26               mm
F18.8             mm
Plate Thickness    
0.47 ± 0.02      mm
0.38 ± 0.02 mm
0.33 ± 0.02 mm
OAR
> 60%
> 60%
Pore Size:
10.5           mm
8.0 mm
6.0 mm
Channel Pitch
12.5 ± 0.5 mm
10.0 ± 0.5 mm
8.0 ± 0.5 mm
Bias Angle
12.5°± 1°        degrees
6°± 1°     degrees
Electrode Dia.
F31.8             mm
F23.9      mm
Dark Current at 1000V:
£ 5 x 10 –12 A / Cm2
£ 5 x 10 –12 A / Cm2

Features
  1. Pore size:5~50 μm
  2. Open ration:≥60%
  3. Electrode material:Ni-Cr
  4. Depth of electrode:
   Input plane:≤0.8d (d : pore size)
   Output plane:2~3d (d: pore size)
  5. Bake out temperature:≤400℃
   High output current, wide dynamic range,high gain,low noise, long life time
  6. With or without solid glass border

 Typical paameters for MCPs

 Type
 Useful Diameter
mm
Channel Diameter
μm
 Channel Pitch
μm
 Resistance
 Surface Resistance
Ω
 Gain
800V
Φ16  
Φ12
6
7.5
  50~300
120
700
Φ22  
Φ16
6
7.5
  50~300
120
1200
Φ25
 Φ18.8 
 
6
8
70250
100
1500
8
10
70250
100
1500
10
12.5
70250
100
1500
Φ33
    
Φ26
6
8
50300
100
2500
8
10
50300
100
2500
10
12.5
50300
100
2500
Φ36
Φ31
12
14
80300
160
3000
Φ50
Φ45
25
27
50300
300
7000*
Φ56
Φ50
25
27
50300
300
7000*
Φ81
Φ75
27
30
30200
500
7000*
Φ100
Φ95
27
30
30200
500
7000*
Φ106
Φ100
27
30
30200
500
7000*

                                                                                                 *test voltage1000V

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