  We have searched for solar axions with a detector which consists of a 4T x
2.3m superconducting magnet, PIN-photodiode X-ray detectors, and an altazimuth
mount to track the sun. The conversion region is filled with cold helium gas
which modifies the axion mass at which coherent conversion occurs. In the past
measurements, axion mass from 0 to 0.27eV have been scanned. Since no positive
evidence was seen, an upper limit to the axion-photon coupling constant was set
to be g < 6-10E-10/GeV (95%CL) depending on the axion masses. We are now
actively preparing for a new stage of the experiment aiming at one to a few eV
solar axions. In this mass region, our detector might be able to check
parameter regions which are preferable to the axion models.
