Author/Authors :
Calero، نويسنده , , J. and Cennini، نويسنده , , P. and Gallego، نويسنده , , E. and Gلlvez، نويسنده , , J. and Garcيa Tabares، نويسنده , , L. and Gonzلlez، نويسنده , , E. and Jaren، نويسنده , , J. and Lَpez، نويسنده , , C. and Lorente، نويسنده , , A. and Martيnez-Val، نويسنده , , J.M. and Oropesa، نويسنده , , J. and Rubbia، نويسنده , , C. and Rubio، نويسنده , , J.A. and Saldana، نويسنده , , F. and Tamarit، نويسنده , , J. and Vieira، نويسنده , , S.، نويسنده ,
Abstract :
A uranium thermometer has been designed and built in order to make local power measurements in the First Energy Amplifier Test (FEAT). Due to the experimental conditions power measurements of tens to hundreds of nW were required, implying a sensitivity in the temperature change measurements of the order of 1 mK. A uranium thermometer accurate enough to match that sensitivity has been built. The thermometer is able to determine the absolute energetic gain obtained in a tiny subcritical uranium assembly exposed to a proton beam of kinetic energies between 600 MeV and 2.75 GeV. In addition, the thermometer measurements have provided information about the spatial power distribution and the shape of the neutron spallation cascade.
