  Neutron-induced fission cross-section studies are being pursued with a double
Frisch grid fission detector. We are working towards conducting neutron-induced
fission cross-section measurements of high priority 241Am(n, f) and
244,245Cm(n, f) fission reactions in the energy range of 1-2000 keV. These
measurements of high priority (n, f) reactions cross-sections from the OECD
Nuclear Energy Agency High Priority Request List (HPRL), are identified as
reactions that require improved data in the energy range of 1-2000 keV for the
safe and economic design of next-generation fast nuclear reactors. The 7Li(p,
n) reaction at various proton energies from 1.9 MeV to 3.6 MeV will be used to
produce neutron flux to conduct neutron-induced fission cross-section studies.
In the present special issue contribution paper, we are presenting the
characterization study of the double Frisch grid fission detector. The detector
is characterized with a 252Cf (spontaneous fission) source. The chamber
consists of two cylindrical ionization sections in a back-to-back geometry
sharing a common cathode. Each section consists of a cathode, guard rings, a
grid, and an anode. The grids are made as a wire plane. The separation between
the cathode and grid is 5.3 cm, and the grid to the anode is 1.2 cm. The source
is mounted on a common cathode, and the chamber is operated at approximately
800 Torr pressure of P-10 gas mixture. The data acquisition with the digital
data acquisition module CAEN N6725 is being set up and the preliminary analysis
of the chamber performance suggests that the detector operation is good and
stable. Further work with regard to employing trigger from the cathode and
incorporating energy loss corrections are being pursued.
