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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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