T-RAX: Transversely Resonant Axion eXperiment

Abstract

AbstractWe propose to use an elongated rectangular waveguide near its cutoff frequency for axionic dark matter searches. The detector's large surface area allows for significant signal power, while its narrow transverse dimension and tapered-waveguide coupling suppress parasitic modes. The proposed system can fit inside a solenoid magnet and is sensitive to the QCD-axion in the axion mass 40–400μeV. We describe the theoretical principles of the new design, present simulation results, and discuss the implementation.