High Power Laser and Particle Beams, Volume. 36, Issue 12, 124003(2024)
Simulation and source design of large area uniform bremsstrahlung field
Bremsstrahlung diode is an important device for obtaining large area uniform bremsstrahlung field in laboratory. In this paper, based on Monte Carlo method, a model of single and double ring parallel electron beam bombarding tantalum target is established to simulate the process of bremsstrahlung field generated by ring diode. The electron beam energy is 1.5 MeV, the tantalum target thickness is 200 μm, and the dose of bremsstrahlung field generated by a single ring electron beam 10 cm behind the target is simulated by detector counting method. For single-ring diode structure, the inner diameter of the ring is the main factor affecting the bremsstrahlung field uniformity behind the target, and the larger the inner diameter, the worse the central dose uniformity. Compared with the inner diameter of the ring, the ring width mainly affects the dose of the radiation field, but has little influence on the uniformity. When the inner diameter of a single ring is 19 cm and the outer diameter is 20 cm, a uniform radiation field with a maximum area of
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Baiwen Ding, Jianhong Hao, Fang Zhang, Qiang Zhao, Jieqing Fan, Zhiwei Dong. Simulation and source design of large area uniform bremsstrahlung field[J]. High Power Laser and Particle Beams, 2024, 36(12): 124003
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Received: May. 21, 2024
Accepted: Sep. 18, 2024
Published Online: Jan. 15, 2025
The Author Email: Zhang Fang (fangzhang328@163.com)