Accelerator Measurements of Magnetically Induced Radio Emission from Particle Cascades with Applications to Cosmic-Ray Air Showers

K Belov^{1

2}, K Mulrey³, A Romero-Wolf², S A Wissel^{1

4}, A Zilles⁵, K Bechtol⁶, K Borch¹, P Chen⁷, J Clem³, P W Gorham⁸, C Hast⁹, T Huege¹⁰, R Hyneman^{1

11}, K Jobe⁹, K Kuwatani¹, J Lam¹, T C Liu⁷, J Nam⁷, C Naudet², R J Nichol¹², B F Rauch¹³, B Rotter⁸, D Saltzberg¹, H Schoorlemmer⁸, D Seckel³, B Strutt¹², A G Vieregg^{6

14}, C Williams¹⁵; T-510 Collaboration

Affiliations

¹ Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, California 90095, USA.
² Jet Propulsion Laboratory, Pasadena, California 91109, USA.
³ Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA.
⁴ Physics Department, California Polytechnic State University, San Luis Obispo, California 93407, USA.
⁵ Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76128 Karlsruhe, Germany.
⁶ Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA.
⁷ Department of Physics, Graduate Institute of Astrophysics, Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, Taipei 10617, Taiwan.
⁸ Department of Physics and Astronomy, University of Hawaii, Manoa, Hawaii 96822, USA.
⁹ SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
¹⁰ Institut für Kernphysik, Karlsruher Institut für Technologie, 76021 Karlsruhe, Germany.
¹¹ Physics Department, College of William & Mary, Williamsburg, Virginia 23187, USA.
¹² Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom.
¹³ Department of Physics, Washington University in St. Louis, St. Louis, Missouri 63130, USA.
¹⁴ Department of Physics, Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
¹⁵ Department of Physics, Stanford University, Stanford, California 94305, USA.

PMID: 27104694
DOI: 10.1103/PhysRevLett.116.141103

Accelerator Measurements of Magnetically Induced Radio Emission from Particle Cascades with Applications to Cosmic-Ray Air Showers

K Belov et al. Phys Rev Lett. 2016.

. 2016 Apr 8;116(14):141103.

doi: 10.1103/PhysRevLett.116.141103. Epub 2016 Apr 7.

Authors

Affiliations

¹ Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, California 90095, USA.
² Jet Propulsion Laboratory, Pasadena, California 91109, USA.
³ Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA.
⁴ Physics Department, California Polytechnic State University, San Luis Obispo, California 93407, USA.
⁵ Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76128 Karlsruhe, Germany.
⁶ Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA.
⁷ Department of Physics, Graduate Institute of Astrophysics, Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, Taipei 10617, Taiwan.
⁸ Department of Physics and Astronomy, University of Hawaii, Manoa, Hawaii 96822, USA.
⁹ SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
¹⁰ Institut für Kernphysik, Karlsruher Institut für Technologie, 76021 Karlsruhe, Germany.
¹¹ Physics Department, College of William & Mary, Williamsburg, Virginia 23187, USA.
¹² Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom.
¹³ Department of Physics, Washington University in St. Louis, St. Louis, Missouri 63130, USA.
¹⁴ Department of Physics, Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
¹⁵ Department of Physics, Stanford University, Stanford, California 94305, USA.

PMID: 27104694
DOI: 10.1103/PhysRevLett.116.141103

Abstract

For 50 years, cosmic-ray air showers have been detected by their radio emission. We present the first laboratory measurements that validate electrodynamics simulations used in air shower modeling. An experiment at SLAC provides a beam test of radio-frequency (rf) radiation from charged particle cascades in the presence of a magnetic field, a model system of a cosmic-ray air shower. This experiment provides a suite of controlled laboratory measurements to compare to particle-level simulations of rf emission, which are relied upon in ultrahigh-energy cosmic-ray air shower detection. We compare simulations to data for intensity, linearity with magnetic field, angular distribution, polarization, and spectral content. In particular, we confirm modern predictions that the magnetically induced emission in a dielectric forms a cone that peaks at the Cherenkov angle and show that the simulations reproduce the data within systematic uncertainties.

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Accelerator Measurements of Magnetically Induced Radio Emission from Particle Cascades with Applications to Cosmic-Ray Air Showers

Affiliations

Accelerator Measurements of Magnetically Induced Radio Emission from Particle Cascades with Applications to Cosmic-Ray Air Showers

Authors

Affiliations

Abstract

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