Pitts, R. A., Chavan, R., Erents, S. K., Kaveney, G., Matthews, G. F., Neill, G., Vince, J. E., Ďuran, I. A Retarding field energy analyzer for the JET plasma boundary. Lausanne: Ecole Polytechnique Federale de Lausanne, 2003. CRPP Internal Report., LRP., 765/03.