  A comprehensive and reliable nuclear database of neutron-induced process is
required by the development of Accelerator-Driven System technology. Although
many excellent efforts have been made, the measurements to the fission fragment
in zero degree of the beam direction is not perfect enough. Most detector can
not work constantly under the strike of intense flux neutron beam, thus their
application as Zero Degree Detector (ZDD) is greatly limited. Recently, the Low
Gain Avalanche Diode (LGAD) technology has been developed to meet the
complicated and several requirement of ATLAS on Large Hadron Collider (LHC) and
could survive after $2.5\times 10^{15}~n_{eq}/cm^2$ irradiation. With its 50
$\mu$m active thickness, 30 ps temporal resolution, low cost and good radiation
hardness property, the LGAD detector is expected to be an excellent candidate
for the use of a Zero Degree Detector in neutron-induced process data
measurements. This paper represents a performance test to LGAD detector when it
is used as a ZDD on the Back-streaming Neutron (Back-n) beamline at CSNS.
Measuring to the cross section of $^6Li(n,T)\alpha$, it shows that the LGAD
performs well as a ZDD based on a good agreement with the data from ENDF
database.
