The ACE-CRIS Scintillating Optical Fiber Trajectory (SOFT) Detector: Calibrations at the NSCL and GSI

Creators: von Rosenvinge, T. T.; Allbritton, G.; Binns, W. R.; Christian, E. R.; Cohen, C. M. S.; Cook, W. R.; Cummings, A. C.; Dougherty, B. L.; Dowkonnt, P. F.; Epstein, J. W.; Fridovich, B.; Gauld, B.; Grumm, R.; Hink, P. L.; Kecman, B.; Leske, R. A.; Madden, M. P.; Mewaldt, R. A.; Milliken, B.; Olevitch, M. A.; Radocinski, R. G.; Shuman, S.; Stone, E. C.; Thayer, M. R.; Wiedenbeck, M. E.

Others:: Potgieter, M. S.; Raubenheimer, C.; van der Walt, D. J.

Abstract

The Scintillating Optical Fiber Trajectory (SOFT) detector, the hodoscope for the Cosmic Ray Isotope Spectrometer (CRIS) on the NASA Advanced Composition Explorer, was calibrated using 155 MeV/n He, Li, C, N, 0, and Ar at the Michigan State University National Superconducting Cyclotron Laboratory (NSCL), and 200 - 700 MeV/n C, Si, and Fe at the GSI facility in Darrnstadt. Germany. The flight instrument consists of three hodoscope fiber planes and one trigger plane. read out by an image intensified CCD camera system and by intensified photodiodes respectively. The spatial and angular resolution of the hodoscope is described, along with the detection efficiency of both the hodoscope and trigger plane as a function of charge.

Additional Information

© Space Research Unit. Provided by the NASA Astrophysics Data System. This work was supported in part by NASA contract NASS-32626, other NASA grants, and in part by the McDonnell Center for the Space Sciences at Washington University.

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