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Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - CRD - Cosmic Ray Direct
HNX/SuperTIGER Silicon Strip Detector Response to Nuclei in Lead Primary and Fragmented Test Beams
J.F. Krizmanic,* Y. Akaike, D.L. Braun, R.G. Bose, J. Buckley, G. DeNolfo, J. Dumonthier, P. Dowkontt, Z. Hughes, I. Liceaga-Indart, J. Link, J. Mitchell, G. Mitchell, S. Nutter, G. Suarez, M. Olevitch, T. Tatoli, G.E. Simburger, W.R. Binns, T. Brandt, M. Israel, A. Labrador, M. Wiedenbeck, R. Mewaldt, B.F. Rauch, K. Sakai, M. Sasaki, E. Stone, N. Walsh, C.J. Waddington
*corresponding author
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Pre-published on: 2019 August 26
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The response to 150 GeV/nuc primary lead ($^{208}$Pb) and fragmented (A/Z=2.4, 2.2, 2.0) beams measured a silicon strip detector, designed for use in the Heavy Nuclei eXplorer (HNX) and an upgrade of the Super Trans-Iron Galactic Element Recorder (SuperTIGER) balloon experiment, was evaluated in a CERN test beam (H8A) during Nov - Dec 2018. The 500 $\mu$m thick, single-sided silicon detectors have 32 DC-coupled strips with 3 mm pitch on the junction side with $9.6 \times 9.6$ cm$^2$ active area. Discrete charge-preamplifiers and shaping amplifiers were used to read out the ohmic and junction side signals simultaneously using the SuperTIGER DAQ system. We report on the response in a configuration where all 32 strips were joined and read out together. The strip detector-under-test was situated
between planar silicon detectors, which provided the charge selection as well as a comparison of the measured response of each detector. The combined data set shows excellent charge resolution and finely resolved elemental peaks from helium (Z=2) through lead (Z=82). In this paper, we provide a description of the test beam experiment and the results of the charge resolution analysis.
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