The Tokyo Axion Helioscope
  The Tokyo Axion Helioscope experiment aims to detect axions which are produced in the solar core. The helioscope uses a strong magnetic field in order to convert axions into X-ray photons and has a mounting to follow the sun very accurately. The photons are detected by an X-ray detector which is made of 16 PIN-photodiodes. In addition, a gas container and a gas regulation system is adopted for recovering the coherence between axions and photons in the conversion region giving sensitivity to axions with masses up to 2 eV. In this paper, we report on the technical detail of the Tokyo Axion Helioscope. 
R. Ohta, Y. Akimoto, Y. Inoue, M. Minowa, T. Mizumoto, S. Moriyama, T.   Namba, Y. Takasu, A. Yamamoto
astro-ph.IM