TL;DR
The Tokyo Axion Helioscope is a device designed to detect solar axions by converting them into X-ray photons using a superconducting magnet and helium gas to enhance conversion, with initial results and future prospects.
Contribution
This paper presents the construction, operation, and initial results of the Tokyo Axion Helioscope, a novel experimental setup for solar axion detection.
Findings
Initial search results obtained
Helium gas enhances conversion for massive axions
Prospects for future axion searches
Abstract
The idea of a magnetic axion helioscope was first proposed by Pierre Sikivie in 1983. Tokyo axion helioscope was built exploiting its detection principle with a dedicated cryogen-free superconducting magnet and PIN photodiodes for x-ray detectors. Solar axions, if exist, would be converted into x-ray photons in the magnetic field. Conversion is coherently enhanced even for massive axions by filling the conversion region with helium gas. Its start up, search results so far and prospects are presented.
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