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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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