Distribution of Footprint Marked by Energetic Alpha Particle Bombardment on the First Wall
Distribution of Footprint Marked by Energetic Alpha Particle Bombardment on the First Wall
复制标题
第一面墙上高能阿尔法粒子轰击留下的足迹分布
DOI：
10.1016/j.jnucmat.2013.01.191
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发表时间：
2013
影响因子：
3.1
通讯作者：
and M. Sasao
中科院分区：
文献类型：
--
作者：
A. Okamoto;M. Isobe;S. Kitajima;and M. Sasao
利用洛伦兹轨道代码LORBIT [M]对ITER平衡中丢失的α粒子的最终轨道进行了全轨道跟踪计算。Isobe等。启科学。仪器。70(1999)827]，以获得α粒子轰击在第一壁上的足迹的参数依赖性。印迹极向面位置的确定主要取决于起始点的俯仰角。由于磁力线在第一壁面上的阴影，即使对于等分起始点，印迹位置的环面分布也是不均匀的。由于α粒子在第一壁表面上的跳跃运动，产生了内衬足迹。发现能量沉积沿线路分散。
Full orbit-following calculations for the final orbit of lost alpha particles in an ITER equilibrium are performed using a Lorentz orbit code LORBIT [M. Isobe, et al. Rev. Sci. Instrum. 70 (1999) 827] to obtain parameter dependence of the footprint of alpha particle bombardment on the first wall. Determination of the poloidal location for the footprint is dominated by the pitch angle at the starting point. Toroidal distribution of the footprint location is inhomogeneous even for equipartitioned starting points because of the shadow of the magnetic field line on the first wall surface. Due to a hopping motion of an alpha particle on the surface of the first wall, a lined footprint is generated. Energy deposition is found to be dispersed along the line.