Author/Authors :
S. Andriamonje، نويسنده , , P. Tsopelas and A. Angelopoulos، نويسنده , , A. Apostolakis and Th. Georgiadis ، نويسنده , , F. Attale، نويسنده , , L. Brillard، نويسنده , , S. Buono، نويسنده , , J. Calero، نويسنده , , F. Carminati، نويسنده , , F. Casagrande، نويسنده , , P. Cennini، نويسنده , , S. Charalambous، نويسنده , , R. Del Moral، نويسنده , , C. Eleftheriadis، نويسنده , , E. Gallego، نويسنده , , J. Galvez، نويسنده , , L. Garcia-Tabares، نويسنده , , C. Geles، نويسنده , , I. Goulas، نويسنده , , J.M. Loiseaux and A. Giorni، نويسنده , , E. Gonzalez، نويسنده , , et al.، نويسنده ,
Abstract :
An already existing, sub-critical arrangement made of natural uranium and water moderator has been exposed to a low intensity (≈ 109 ppp) proton beam from CERN-PS at several kinetic energies from 600 MeV to 2.75 GeV. The energy delivered by the hadronic cascade induced by the beam in the device has been measured by the temperature rise of small sampling blocks of uranium located in several different positions inside the device and counting the fissions in thin probe foils of natural uranium. We find typically G ≈ 30 in reasonable agreement with calculations, where G is the ratio of the energy produced in the device to the energy delivered by the beam. This result opens the way to the realisation of the so-called Energy Amplifier, a practical device to produce energy from thorium or depleted uranium targets exposed to an intense high energy proton beam. Results show that the optimal kinetic is ≥ 1 GeV, below which G decreases but is still acceptable in the energy range explored
