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Etude et réalisation d'une chaine d'instrumentation numérique rapide pour l'identification des ions

Abstract : This report deals with a fast digital electronic system developed for ion identification and spectroscopy. The system, called IRIS, has been conceived for the super heavy element research program: FUSION. In order to observe a super heavy element, the energy of the compound nucleus implanted in a silicon detector must be measured, and the alpha decay also registered. The associated electronics must therefore handle a very wide range of energies and also exhibit a small recovery time after the implantation of the compound nucleus. IRIS is connected to the output of a charge preamplifier. It digitizes the signal and then executes two digital signal processes: the first to detect the particle, and the second to determine the energy deposited in the silicon detector. The use of programmed processing allows for the adjustment of the digital processing parameters, as well as a choice of other digital signal processing procedures, depending the application. After having explained why a conventional electronic system cannot be used for the detection of super-heavy ions, IRIS' structure is detailed and a number of digital signal processing procedures are studied and tested.
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Submitted on : Thursday, March 6, 2003 - 4:42:51 PM
Last modification on : Tuesday, February 5, 2019 - 12:12:07 PM
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  • HAL Id : tel-00002517, version 1

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T. Legou. Etude et réalisation d'une chaine d'instrumentation numérique rapide pour l'identification des ions. Autre. Université de Caen, 2002. Français. ⟨tel-00002517⟩

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