  We report on a new technique of a Multi-Cathode Counter (MCC) developed to
search for hidden photon (HP) cold dark matter (CDM) with a mass from 5 to 500
eV. The method is suggested in the assumption that HP-photon mixing causes
emission of single electrons from a metal cathode if the mass of hidden photon
is greater than a work function of the metal. The measured effect from HP
should be dependent on work function of the metal and on the structure of
electronic shells of the metal used as a cathode. Potentially this can be used
for a verification of the results obtained. Some preliminary results for the
upper limit for mixing parameter X have been obtained for HP with a mass from 5
eV to 10 keV as a pure illustration of the potential of this technique. The
efforts are continued to refine the procedure of data treatment and to improve
the work of MCC. A new detector with a more developed design is under
construction.
