PoS - Proceedings of Science
Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Cosmic-Ray Physics (Direct, CRD)
Updated Analysis of SuperTIGER Flight Data for Galactic Cosmic-Ray Elemental Spectra
A. Labrador*, Q. Abarr, Y. Akaike, W.R. Binns, R.G. Bose, T.J. Brandt, N. Cannady, P. Ghosh, T. Hams, M.H. Israel, L. Lisalda, R.A. Mewaldt, J.W. Mitchell, R.P. Murphy, S. Nutter, N. Osborne, B.F. Rauch, K. Sakai, M. Sasaki, E.C. Stone, C.J. Waddington, N.E. Walsh, J.E. Ward, A. West, M.E. Wiedenbeck and W. Zoberet al. (click to show)
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Pre-published on: August 18, 2023
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SuperTIGER (Trans-Iron Galactic Element Recorder) is a large-area, balloon-borne cosmic-ray experiment designed to measure the galactic cosmic-ray abundances of elements from Z=10 (Ne) to Z=56 (Ba) at energies from ~0.8 GeV/nuc to ~10 GeV/nuc, with the primary goal of measuring relative abundances of ultra-heavy elements above Z=30. SuperTIGER flew for a record 55 days over Antarctica in 2012-2013 and for a second flight of over 32 days in 2019-2020. Although the primary goal is measuring ultra-heavy cosmic-ray relative abundances, the SuperTIGER data analysis uses measurements of abundant elements at Z<30 for precise charge calibration extended to the ultra-heavy elements. In this technical presentation, we will report ongoing progress on analysis to obtain energy spectra for these Z<30 elements, from Ne to Cu. We will present new details of the aerogel and acrylic Cherenkov calibrations necessary for calculating energies for generating absolute spectra, including effective photoelectron resolution, knock-on electron contributions, and other background signals in the Cherenkov detectors.
DOI: https://doi.org/10.22323/1.444.0128
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