As the intensity of low-energy background gamma is much higher than the high-energy gamma, the detector that used for high-energy pulse gamma diagnosis must be more sensitive to high-energy gamma than that to low-energy background gamma. Base on theoretical calculation and Monte Carlo simulation, this paper proposes a new method for the diagnosing of 16.7MeV high-energy pulse gamma, named “scattering-absorbing method”. The ratio of the sensitivity of high-energy gamma to that of the low-energy background gamma can reach 106 to 108 by this new method. The sensitivity of 16.7MeV high-energy gamma ranges from 10-21 to 10-16C﹒cm2. It’s better than the traditional method which is based on the magnetic analyzer and Cherenkov detector on some aspects.

Based on theoretical calculation and Monte Carlo simulation, this paper proposes a new method for the diagnosing of 16.7 MeV highenergy pulse gamma, named “scattering absorption method”. The ratio of the sensitivity of highenergy gamma to that of the lowenergy background gamma can reach 106 to 108 by this new method. The sensitivity of 16.7 MeV highenergy gamma ranges from 1021 to 1016 C·cm2. It’s better than the traditional method which is based on the magnetic analyzer and Cherenkov detector on some aspects.