Characterization of the Medley setup for measurements of neutron-induced fission cross sections at the GANIL-NFS facility

Abstract

Abstract. Neutron-induced fission cross sections of 235 U and 238 U are widely used as standards for monitoring of neutron beams and fields. An absolute measurement of these cross sections at an absolute scale, i.e., versus the H(n,p) scattering cross section, is planned with the white neutron beam under construction at the Neutrons For Science (NFS) facility in GANIL. The experimental setup, based on PPACs and ∆E-∆E-E telescopes containing Silicon and CsI(Tl) detectors, is described. The expected uncertainties are discussed.

Characterization of PPACs’ time resolution for fission studies

“…The fission fragments will be detected by one of the PPACs and stopped in the first Si detector in one of the eight telescopes. The proton recoil from H(n,p) will be stopped in the CsI(Tl) scintillator in one of the front telescopes, because of the kinematics of the reaction [4].…”