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The dependence of the resolving power and sensitivity of a discrete electrode detector array on the proximity of a microchannel‐plate electron multiplier
Author(s) -
Langstaff David P.,
Birkinshaw Keith
Publication year - 1995
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290090814
Subject(s) - microchannel plate detector , gas electron multiplier , electron multiplier , detector , fabrication , microchannel , chip , chemistry , electron , optoelectronics , sensitivity (control systems) , electrode , optics , physics , nanotechnology , electronic engineering , electrical engineering , materials science , nuclear physics , engineering , medicine , alternative medicine , pathology
A detector array has been designed which integrates all pulse sensing, data logging, control and interface circuitry on a single silicon chip. In conjunction with a microchannel‐plate electron multiplier (MCP) the array can be used to measure dispersed spectra of ions, electrons and photons (UV and higher energies). In order to increase the sensitivity of the pulse sensing circuitry, non‐standard steps are introduced into the fabrication process which increase cost and prototype development time. In the present work it is shown that by reducing the separation between the MCP output and the array to about 4.5 microns an improvement in performance is achieved which should enable the production of high performance devices using a standard fabrication process.