摘要
A self-magnetic pinch diode （SMPD） integrating an anode foil-reinforced electron beam pinch focus and a small high-dose x-ray spot output was designed and optimized. An x-ray focal spot measuring system was developed in accordance with the principle of pinhole imaging. The designed SMPD and the corresponding measuring system were tested under ~MV, with 1.75 ~ 2 mm2 oval x-ray spots （AWE defined） and forward directed dose 1.6 rad at 1 m. Results confirmed that the anode foil can significantly strengthen the electron beam pinch focus, and the local spot measuring system can collect clear focal spot images. This finding indicated that the principle and method are feasible.
A self-magnetic pinch diode （SMPD） integrating an anode foil-reinforced electron beam pinch focus and a small high-dose x-ray spot output was designed and optimized. An x-ray focal spot measuring system was developed in accordance with the principle of pinhole imaging. The designed SMPD and the corresponding measuring system were tested under ~MV, with 1.75 ~ 2 mm2 oval x-ray spots （AWE defined） and forward directed dose 1.6 rad at 1 m. Results confirmed that the anode foil can significantly strengthen the electron beam pinch focus, and the local spot measuring system can collect clear focal spot images. This finding indicated that the principle and method are feasible.
基金
supported by National Natural Science Foundation of China (Grant Nos. 11305128 and 11505142)
the State Key Laboratory of Intense Pulsed Radiation Simulation and Effect (Grant No. SKLIPR.1503)
