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Cosmic-ray isotope measurements with HELIX

S. Coutu, J. Beatty, M. Gebhard, N. Green, D. Hanna, B. Kunkler, M. Lang, I. Mognet, D. Muller, J. Musser, S. Nutter, N. Park, M. Schubnell, G. Tarlé,, A. Tomasch, G. Visser, S. Wakely, I. Wisher

in 35th International Cosmic Ray Conference

Contribution: pdf


HELIX (High Energy Light Isotope eXperiment) is a balloon-borne experiment designed to measure the chemical and isotopic abundances of light cosmic ray nuclei. Detailed measurements by HELIX, especially of $^{10}$Be from 0.2 GeV/n to beyond 3 GeV/n, will provide an essential set of data for the study of propagation processes of the cosmic rays. HELIX consists of a 1 Tesla superconducting magnet with a high-resolution tracking system, time of flight detector, and a ring-imaging Cherenkov detector. The instrument is scheduled to have a long-duration balloon flight out of McMurdo Station during NASA's 2019/20 Antarctic balloon campaign. In this talk, we will discuss the scientific goals and the design of the experiment, and report on its current status.