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A fast low-noise charged-particle CVD diamond detector

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4 Author(s)
Frais-Kolbl, H. ; Fachhochschule fur Wirtschaft und Technik, Wiener Neustadt, Austria ; Griesmayer, E. ; Kagan, H. ; Pernegger, H.

This work presents the design and test results of a charged-particle solid-state detector with ultrafast signal response based on polycrystalline chemical-vapor-deposition (pCVD) diamond as active detector material and a high-bandwidth RF amplifier. We tested the detector at the Indiana University Cyclotron Facility Bloomington, IN, in a proton beam with a kinetic energy ranging from 55 to 200 MeV. The detector signals showed an average pulsewidth of 1.38 ns, which enables single-particle counting at instantaneous rates approaching the gigahertz range. The detector operated with a signal-to-noise ratio of 7 : 1 for 200-MeV protons and a single-particle detection efficiency up to 99%.

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Nuclear Science, IEEE Transactions on  (Volume:51 ,  Issue: 6 )