Author/Authors :
Pancin، نويسنده , , J. and Abbondanno، نويسنده , , U. and Aerts، نويسنده , , G. and Alvarez، نويسنده , , H. and Andriamonje، نويسنده , , S. and Angelopoulos، نويسنده , , A. and Assimakopoulos، نويسنده , , P. and Bacri، نويسنده , , C. and Badurek، نويسنده , , G. and Baumann، نويسنده , , P. and Be?v??، نويسنده , , F. and Beer، نويسنده , , H. and Benlliure، نويسنده , , J. and Berthier، نويسنده , , B. and Berthoumieux، نويسنده , , E. a، نويسنده ,
Abstract :
A Micromegas detector was used in the neutron Time-Of-Flight (n_TOF) facility at CERN to evaluate the spatial distribution of the neutron beam as a function of its kinetic energy. This was achieved over a large range of neutron energies by using two complementary processes: at low energy by capture of a neutron via the 6Li(n,α)t reaction, and at high energy by elastic scattering of neutrons on gas nuclei (argon+isobutane or helium+isobutane). Data are compared to Monte Carlo simulations and an analytic function fitting the beam profile has been calculated with a sufficient precision to use in neutron capture experiments at the n_TOF facility.
Keywords :
N_TOF , Beam profile , Neutron beam profiler , Micromegas
