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A two-dimensional position-sensitive anode for microchannel plates based on the “MBWC” technique

Authors
Journal
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
0168-9002
Publisher
Elsevier
Publication Date
Volume
387
Issue
3
Identifiers
DOI: 10.1016/s0168-9002(96)01214-4
Keywords
  • Gamma
  • X-Ray And Charged Particle Detectors

Abstract

Abstract The modified backgammon method with weighted coupling capacitors (MBWC) has been applied to a tandemmicrochannel-plate charged-particle detector for two-dimensional position encoding. After some optimizing procedure a position resolution better than 40 μm (FWHM) is obtained for an avalanche size of ∼ 1 × 10 7 electrons. Individual microchannels with 15 μm spacing are clearly resolved at the avalanche size of ∼ 4 × 10 7 electrons. Acceptable image linearity over the whole MCP sensitive area of 20 mm ace gf is obtained.

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