Picosecond timing of Microwave Cherenkov Impulses from High-Energy Particle Showers Using Dielectric-loaded Waveguides

  title={Picosecond timing of Microwave Cherenkov Impulses from High-Energy Particle Showers Using Dielectric-loaded Waveguides},
  author={P. Gorham and J. Bynes and B. Fox and C. Hast and B. Hill and K. Jobe and C. Miki and R. Prechelt and B. Rotter and D. Saltzberg and S. Wissel and G. Varner and S. Z. U. O. H. A. Manoa and Slac National Accelerator Lab and Ucla and Cal Poly San Luis Obisbo},
  journal={arXiv: Instrumentation and Detectors},
We report on the first measurements of coherent microwave impulses from high-energy particle-induced electromagnetic showers generated via the Askaryan effect in a dielectric-loaded waveguide. Bunches of 12.16 GeV electrons with total bunch energy of $\sim 10^3-10^4$ GeV were pre-showered in tungsten, and then measured with WR-51 rectangular (12.6 mm by 6.3 mm) waveguide elements loaded with solid alumina ($Al_2 O_3$) bars. In the 5-8 GHz $TE_{10}$ single-mode band determined by the presence of… Expand


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The first direct experimental evidence for the charge excess in high-energy particle showers and corresponding radio emission predicted nearly 40 years ago by Askaryan is presented, providing strong support for experiments designed to detect high- energy cosmic rays such as neutrinos via coherent radio emission from their cascades. Expand
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  • Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
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  • Gorham, Saltzberg, +4 authors Condé
  • Physics, Medicine
  • Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
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