Prototype Silicon Position-Sensitive Detector Working with Bragg-Brentano Powder Diffractometer

A. Ziębaa, W. Dąbrowskia, P. Grybośa, W. Powroźnikb, T. Stobieckib, K. Świenteka, J. Słowika and P. Wiąceka aFaculty of Physics and Nuclear Techniques University of Mining and Metallurgy, Al. Mickiewicza 30, 30-059 Kraków, Poland bDepartment of Electronics, University of Mining and Metallurgy, Al. Mickiewicza 30, 30-059 Kraków, Poland

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A prototype 64-channel detector module, comprising a silicon strip detector with strip pitch of 100μm and 64-channel ASIC RX64, was tested with the X-Pert Philips MPD diffractometer. Basic parameters of the detector module, energy resolution, and detection efficiency, were evaluated as a function of the counting rate. Energy resolution of 1.1 keV FWHM for photon rate up to 107 photon/s per 1 cm of the active width of the detector was demonstrated. The prototype detector, when applied in a diffractometer utilizing Bragg-Brentano focusing principle, allows to increase the counting rate by about 2 orders of magnitude with respect to a single counter. Exemplary diffraction patterns of polycrystalline samples of Si and SiO2 (quartz peak cluster) are presented.

DOI: 10.12693/APhysPolA.101.629 PACS numbers: 07.85.-m, 29.40.Wk