Benjamin Knepper

ORCID: 0000-0002-6883-2925
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About
Contact & Profiles
Research Areas
  • Dark Matter and Cosmic Phenomena
  • Random lasers and scattering media
  • Particle physics theoretical and experimental studies
  • Cosmology and Gravitation Theories
  • Cancer, Lipids, and Metabolism
  • Protein Degradation and Inhibitors
  • Ubiquitin and proteasome pathways
  • Particle Detector Development and Performance
  • Superconducting and THz Device Technology
  • Orbital Angular Momentum in Optics
  • Astrophysics and Cosmic Phenomena
  • Atomic and Subatomic Physics Research

University of Chicago
2023-2025

Fermi National Accelerator Laboratory
2023-2025

Cornell University
2024

National Institutes of Health
2000

National Cancer Institute
2000

We present first results from a dark photon matter search in the mass range 44 to 52 μeV (10.7-12.5 GHz) using room-temperature dish antenna setup called GigaBREAD. Dark converts ordinary photons on cylindrical metallic emission surface with area 0.5 m^{2} and is focused by novel parabolic reflector onto horn antenna. Signals are read out low-noise receiver system. A data taking run 24 days of does not show evidence for this range, excluding mixing parameters χ≳10^{-12} at 90% confidence...

10.1103/physrevlett.132.131004 article EN cc-by Physical Review Letters 2024-03-28

We present the results from first axion-like particle search conducted using a dish antenna. The experiment was at room temperature and sensitive to particles in $44-52\,\mu\mathrm{eV}$ range ($10.7 - 12.5\,\mathrm{GHz}$). novel antenna geometry proposed by BREAD collaboration previously used conduct dark photon same mass range. To allow for sensitivity, placed $3.9\,\mathrm{T}$ solenoid magnet Argonne National Laboratory. In presence of magnetic field, matter converts photons conductive...

10.48550/arxiv.2501.17119 preprint EN arXiv (Cornell University) 2025-01-28

We present the results from first axionlike particle search conducted using a dish antenna. The experiment was at room temperature and sensitive to particles in 44-52 μeV range (10.7-12.5 GHz). novel antenna geometry proposed by BREAD Collaboration previously used conduct dark photon same mass range. To allow for sensitivity, placed 3.9 T solenoid magnet Argonne National Laboratory. In presence of magnetic field, matter converts photons conductive surface reflector. signal is focused onto...

10.1103/physrevlett.134.171002 article EN cc-by Physical Review Letters 2025-04-30

We present first results from a dark photon matter search in the mass range 44 to 52 $\mu{\rm eV}$ ($10.7 - 12.5\,{\rm GHz}$) using room-temperature dish antenna setup called GigaBREAD. Dark converts ordinary photons on cylindrical metallic emission surface with area $0.5\,{\rm m}^2$ and is focused by novel parabolic reflector onto horn antenna. Signals are read out low-noise receiver system. A data taking run 24 days of does not show evidence for this range, excluding mixing parameters...

10.48550/arxiv.2310.13891 preprint EN cc-by arXiv (Cornell University) 2023-01-01
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