Improvements to the Axion Dark Matter eXperiment High Resolution Axion Search

ORAL

Abstract

The Axion Dark Matter eXperiment (ADMX) High Resolution (HR) Channel searches for flows of non-thermalized halo axions, characterized by their very low velocity dispersion, via the inverse Primakoff Effect. A power spectrum would show such axion flows as a peak with spectral broadening of order Hz or lower. The HR Channel is sensitive to signals of this nature, having a spectral resolution as fine as 40 mHz. In this talk we present a means of analysis for the HR data which will improve upon ADMX's recently published results (resolution of 10.8 Hz) by performing several searches using a range of resolutions while still accounting for signal modulation due to terrestrial motion.

*This work has been supported by the U.S. Department of Energy through Grant Nos. DE-FG02-97ER41029, DE- FG02-96ER40956, DE-AC52-07NA27344, and DE- AC03-76SF00098, as well as through the LDRD program at Lawrence Livermore National Laboratory.

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Authors

  • J. Hoskins

    • U. of Florida

  • J. Hwang

    • U. of Florida

  • C. Martin

    • U. of Florida

  • P. Sikivie

    • U. of Florida

  • I. Stern

    • U. of Florida

  • N.S. Sullivan

    • U. of Florida

  • D.B. Tanner

    • U. of Florida

  • C. Boutan

    • U. of Washington

  • M. Hotz

    • U. of Washington

  • D. Lyapustin

    • U. of Washington

  • L.J. Rosenberg

    • U. of Washington

  • G. Rybka

    • U. of Washington

  • A. Wagner

    • U. of Washington

  • S.J. Asztalos

    • Lawrence Livermore National Laboratory

  • G. Carosi

    • Lawrence Livermore National Laboratory

  • C. Hagmann

    • Lawrence Livermore National Laboratory

  • D. Kinion

    • Lawrence Livermore National Laboratory

  • K. van Bibber

    • Naval Postgraduate School

  • R. Bradley

    • National Radio Astronomy Observatory

  • J. Clarke

    • U. of California, Berkeley