Proposal for the realization of Santilli's comparative test on the   gravity of electrons and positrons via a horizontal supercooled vacuum tube
  A proposal for the realization of Santilli's comparative test of the gravity of electrons and positrons via a horizontal supercooled vacuum tube is described. Principle and requirements are described concerning the sources, vacuum chamber electromagnetic shielding and pressure and position sensitive detector. It is concluded that with current technology the experiment is perfectly feasible. 
Victor-Otto de Haan
physics.ins-det