Development of a beam condition monitor system for the experimental areas of the LHC using CVD diamond

The CERN Large Hadron Collider (LHC) will store 2808 bunches per colliding beam, each bunch consisting of 1011 protons at an energy of 7 TeV. If there is a failure in an element of the accelerator, the resulting beam losses could cause damages not only to the machine but also to the experiments. A Beam Condition Monitor (BCM) is foreseen to monitor fast increments of particle fluxes near the interaction point and, if necessary, to generate an abort signal to the LHC accelerator control to dump the beams. The system is being developed initially for the CMS experiment but is sufficiently general to find potential applications elsewhere. Due to its high radiation hardness, CVD diamond has been studied for use as the BCM sensor. Various samples of CVD diamond have been characterized extensively with a 90Sr source and high intensity test beams in order to assess the capabilities of such sensors and to study whether this detector technology is suitable for a BCM system. The results from these investigations are presented in this dissertation.

    Thèse École polytechnique fédérale de Lausanne EPFL, n° 3122 (2004)
    Section de physique
    Faculté des sciences de base
    Institut de physique de l'énergie et des particules
    Jury: Harald Brune, Ambrogio Fasoli, Emmanuel Tsesmelis, Jorg Wenninger

    Public defense: 2004-12-2


    Record created on 2005-03-16, modified on 2016-08-08


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