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A Bevalac Calibration of a Scintillating Optical Fiber Hodoscope for Possible use on the Advanced Composition Explorer

Binns, W. R. and Crary, D. J. and Cummings, A. C. and Klarmann, J. and Lawrence, D. J. and Mewaldt, R. A. (1991) A Bevalac Calibration of a Scintillating Optical Fiber Hodoscope for Possible use on the Advanced Composition Explorer. In: Proceedings of the 22nd International Cosmic Ray Conference. Vol.2. International Union of Pure and Applied Physics , Dublin, Ireland, pp. 467-470.

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As part of instrument definition activities for the Advanced Composition Explorer (ACE) we are evaluating a hodoscope comprised of scintillating fibers for possible use in the Cosmic Ray Isotope Spectrometer (CRIS). The hodoscope would determine the trajectories of individual cosmic ray nuclei which stop in the silicon solid state telescopes in CRIS. We report a preliminary analysis of data from a Dec., 1990 Bevalac calibration of a CRIS test model which consisted of a scintillating fiber hodosccpe, utilizing 200mm, square cross section scintillating fibers, and silicon detectors for dE/dx-Erot measurements. The positional resolution obtained in our preliminary data analysis is -60μm for angles from 0-30°. The detection efficiency for iron and silicon nuclei was determined to be >99% for beam angles of ≥ 20°.

Item Type:Book Section
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URLURL TypeDescription
Binns, W. R.0000-0001-6110-3407
Cummings, A. C.0000-0002-3840-7696
Mewaldt, R. A.0000-0003-2178-9111
Additional Information:© Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System. This experiment would not have been possible without the important contributions of P.F. Dowkontt and J.W. Epstein in the instrument development for this work. This work was supported in part by NASA grants.
Group:Space Radiation Laboratory
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Space Radiation Laboratory1991-19
Record Number:CaltechAUTHORS:20141007-134109460
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50236
Deposited By: Deborah Miles
Deposited On:09 Oct 2014 19:30
Last Modified:09 Mar 2020 13:18

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