1. National Institute of Metrology, Beijing 100029, China;
2. Chengdu University of Technology, Chengdu, Sichuan 610059, China;
3. Beihang University, Beijing 100191, China
Abstract：An invasive measurement method is established to get the tube potential of industrial X-rays generator base on high voltage divider. The tube potential of X-rays machine MG165 is obtained. The results show the ripple of tube potential is less than 4%, when tube potential is more than 35 kV, the ripple is less than 1%. The relative deviation between average tube potential and nominal value is less than 1.8% in the range from 7.5 kV to 150 kV. The repeatability of average tube potential is better than 0.01%. It is less than 0.02% on the condition of re-open beam and re-open generator. All the testing results shows this X-rays generator is satisfy the requirement for realization, dissemination and international comparison of primary standard of air kerma in the range of low-energy X-rays.
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2015, Vol. 36 
