The LEDA512 integrated circuit anode array for the analog recording of mass spectra

Dennis Nevejans, Eddy Neefs, Spyros Kavadias, Patrick Merken, Chris Van Hoof

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Résumé

This article describes two generations of a novel integrated circuit multi-anode electron detector chip (LEDA512). This chip is designed for usage as an analog ion detector in magnetic mass spectrometers, in combination with a stack of two micro channel plates. The first generation chip is applied in a positive ion mass spectrometer on-board the ESA ROSETTA cometary mission. The detector chip comprises two identical and redundant parts, each consisting in a row of 512 rectangular anodes for electron collection, and in an anode multiplexer followed by a charge amplifier. A second-generation of the chip is scheduled. It will implement additional features, such as: radiation hard MOS transistors and shift registers and improved output drive capabilities.

langue originaleAnglais
Pages (de - à)77-87
Nombre de pages11
journalInternational Journal of Mass Spectrometry
Volume215
Numéro de publication1-3
Les DOIs
étatPublié - 1 avr. 2002

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