79 The Electrical Circuit and Internal Resistor/Capacitor Strings for Large-Area MCP-PMT's
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Description: In this little note we describe the electrical circuit for the large-area MCP-PMT development, including a scheme for an internal HV distribution. This current string, which is composed of series-resistors with stiffening capacitors, supplies current to the photocathode and micro-channel plates that form the amplification section of a large-area planar photo-detector. The design has the capacitors and resistors completely inside the vacuum volume, fed by metalized surfaces on the top and bottom plates of the package, with no penetrations of pins necessary through the side walls or bottom plate.
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