Simulation of X-ray dose produced by multi-pulse electron beam impacting on bremsstrahlung conversion target

被引：0

作者：

Zhu, Jun ^{[1
]}

Yu, Hai-Jun ^{[1
]}

Xie, Long ^{[1
]}

机构：

[1] China Academy of Engineering Physics, P.O. Box 919-106, Mianyang 621900, China

来源：

Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | 2010年 / 44卷 / 08期

关键词：

Electron beams;

D O I：

暂无

中图分类号：

O572 [高能物理学];

学科分类号：

摘要：

When high-current pulse electron beam of 20 MeV is focused onto the bremsstrahlung conversion target, high intensity pulse X-rays are produced. At the same time, a large amount of energy is deposited into the target, which results in the target material expansion and blowing off. X-rays doses may be reduced significantly when multi-pulse beam interacting with the conversion target, because the density of the target material decreases during the beam pulses. In the paper, the Monte-Carlo code MCNP and hydrodynamic code ANSYS AUTODYN were used to simulate the hydro-response of the target material and the X-rays dose of each pulse. The results show that X-ray doses are only slightly reduced when 3 pulses (20 MeV, 2 kA, 70 ns, spot size 1.5 mm (FWHM) and 500 ns separation) impacting on the conversion target.

引用

页码：1003 / 1005