The LEDA512 integrated circuit anode array for the analog recording of mass spectra
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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.
CitationNevejans, D.; Neefs, E.; Kavadias, S.; Merken, P.; Van Hoof, C. (2002). The LEDA512 integrated circuit anode array for the analog recording of mass spectra. , International Journal of Mass Spectrometry, Vol. 215, Issue 1-3, 77-87, DOI: 10.1016/S1387-3806(01)00549-8.