The design and construction of the Helix rich detector

P. Allison, J. J. Beatty, L. Beaufore, Y. Chen, S. Coutu, E. Ellingwood, M. Gebhard, N. Green, D. Hanna, B. Kunkler, I. Mognet, R. Mbarek, K. McBride, K. Michaels, D. Müller, J. Musser, S. Nutter, S. O'Brien, N. Park, T. RosinE. Schreyer, G. Tarlé, M. Tabata, A. Tomasch, G. Visser, S. P. Wakely, T. Werner, I. Wisher, M. Yu

Research output: Contribution to journalConference articlepeer-review


The High-Energy Light Isotope eXperiment (HELIX), is a new balloon-borne 1 Tesla magnet spectrometer to measure light isotopic abundances including 10Be and 9Be to energies of ~ 3 GeV/nuc. This requires precise measurements of the rigidity and velocity of the detected particles, necessitating a multi-system detector. The detectors include a magnet/particle tracker for measuring the rigidity, and both time-of-flight and ring imaging Cherenkov (RICH) detectors for measuring the particle velocity and charge. The energy range of interest, high altitude environment, and proximity to the magnet present a challenging environment for a RICH detector. HELIX uses a proximity-focused RICH with an aerogel radiator above a 1m2 focal plane populated with 12,800 silicon photomultipliers (SiPMs). In this contribution we will describe the design of the RICH and discuss progress towards the fabrication and characterization of the focal plane components.

Original languageEnglish (US)
JournalProceedings of Science
StatePublished - 2019
Event36th International Cosmic Ray Conference, ICRC 2019 - Madison, United States
Duration: Jul 24 2019Aug 1 2019

All Science Journal Classification (ASJC) codes

  • General


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