  We present the prospects for detection of KK-axions using a large volume
spherical TPC through natural decay to two gammas. The higher excited mass
states of this axion model allows to reach densities which could be detectable
by this method. We show the capability of this detector to detect 2-prong
events coming from rest-mass axion decays and we provide efficiencies obtained
under some gas mixtures and pressure conditions. The sensitivity limit of a
future experiment with existing detectors geometry has been estimated for the
case of zero background limit.
