Background noise in Compton radiography diagnostic

As an important diagnostic, Compton Radiography provides a means to measure the areal density and asymmetries of the DT fuel in an ICF capsule near the time of peak compression. How to mitigate background noise is very important but difficult. This paper analyzes each source of background noise in detail, and point out how to reduce the background noise, respectively. By optimizing the configuration of the detector and minimizing noise onto the detector, it will achieve 20 signal to noise ratio for neutron yields up to 1013 sr-1 and electron temperature of capsule core up to 5 keV, allowing fuel areal density to be measured with an accuracy of 5%.