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We present prospects of two experiments using the Tokyo Axion Helioscope. Oneis a search for solar axions. In the past measurements, axion mass from 0 to0.27 eV and from 0.84 to 1.00 eV have been scanned and no positive evidence wasseen. We are now actively preparing a new phase of the experiment aiming ataxion mass over 1 eV. The other is a search for hidden sector photons from theSun. We have been designing and testing some additional equipments, which haveto be installed on the helioscope to search for hidden photons with mass ofover $10^{-3}$ eV.

Prospects of Search for Solar Axions with Mass over 1 eV and Hidden Sector Photons