论文标题
线性移动模拟器的平行传输模型，具有基本离子回旋加热
Parallel transport modeling of linear divertor simulators with fundamental ion cyclotron heating
论文作者
论文摘要
材料血浆暴露实验（MPEX）是一种稳态线性装置，其目标是在未来的融合反应器相关条件下进行血浆材料相互作用（PMI）研究。 MPEX的原型称为Porto-MPEX，旨在在计划的完整MPEX设备上进行与来源，供暖和运输概念有关的研究和开发。 MPEX中的辅助加热方案基于射频（RF）波的回旋共振加热。 MPEX中的离子回旋加热（ICH）和电子回旋加热（ECH）用于独立加热离子和电子，并提供从材料目标处的鞘层到完全分离的移动方案的融合转移条件。开发并应用了一个混合粒子码头++以了解MPEX Proto MPEX在ICH加热期间的血浆平行传输。使用此工具，在存在（1）库仑碰撞，（2）体积粒子源和（3）基于Quasi-Linear RF的ICH的情况下，对MPEX/Proto-MPEX离子的分布函数的演变进行了建模。该代码根据来自原始MPEX的实验数据和B2.5 Eirene的仿真数据进行了基准测试。通过使用PICOS ++建模在ICH加热期间，在ICH加热期间，在ICH加热过程中，原始MPEX和MPEX在ICH加热过程中对靶标的密度滴滴的实验观察。实际上，在原始MPEX/MPEX中ICH期间，密度下降，以节省通量并补偿ICH期间增加的流量。此外，对MPEX进行了各种等离子体参数的灵敏度扫描，以研究其在目标的血浆传输以及粒子和能量通量中的作用。最后，我们使用针对动力学电子和流体离子提供的杂种PIC公式讨论了MPEX模型ECH的途径。
The Material Plasma Exposure eXperiment (MPEX) is a steady state linear device with the goal to perform plasma material interaction (PMI) studies at future fusion reactor relevant conditions. A prototype of MPEX referred as Porto-MPEX is designed to carry out research and development related to source, heating and transport concepts on the planned full MPEX device. The auxiliary heating schemes in MPEX are based on cyclotron resonance heating with radio frequency (RF) waves. Ion cyclotron heating (ICH) and electron cyclotron heating (ECH) in MPEX are used to independently heat the ions and electrons and provide fusion divertor conditions ranging from sheath-limited to fully detached divertor regimes at a material target. A Hybrid Particle-In-Cell code- PICOS++ is developed and applied to understand the plasma parallel transport during ICH heating in MPEX Proto-MPEX to the target. With this tool, evolution of the distribution function of MPEX/Proto-MPEX ions is modeled in the presence of (1) Coulomb collisions, (2) volumetric particle sources and (3) quasi-linear RF-based ICH. The code is benchmarked against experimental data from Proto-MPEX and simulation data from B2.5 EIRENE. The experimental observation of density-drop near the target in Proto-MPEX and MPEX during ICH heating is demonstrated and explained via physics-based arguments using PICOS++ modeling. In fact, the density drops at the target during ICH in Proto-MPEX/MPEX to conserve the flux and to compensate for the increased flow during ICH. Furthermore, sensitivity scans of various plasma parameters with respect to ICH power are performed for MPEX to investigate its role on plasma transport and particle and energy fluxes at the target. Finally, we discuss the pathway to model ECH in MPEX using the Hybrid PIC formulation herein presented for kinetic electrons and fluid ions.
