Analysis of ICRF Heating Schemes in ITER Non-Active Plasmas Using PION+ETS Integrated Modeling

Plasma Pub Date : 2024-07-19 DOI:10.3390/plasma7030028
Tomas Bensadon, Mervi Mantsinen, Thomas Jonsson, D. Gallart, Xavier Sáez, J. Manyer
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Abstract

The PION code has been integrated into the European Transport Solver (ETS) transport workflow, and we present the first application to model Ion Cyclotron Resonance Frequency (ICRF) heating scenarios in the next-step fusion reactor ITER. We present results of predictive, self-consistent and time-dependent simulations where the resonant ion concentration is varied to study its effects on the performance, with a special emphasis on the resulting bulk ion heating and thermal ion temperature. We focus on two ICRF heating schemes, i.e., fundamental H minority heating in a 4He plasma at 2.65 T/7.5 MA and a three-ion ICRF scheme consisting of fundamental 3He heating in a H-4He plasma at 3.3 T/ 8.8 MA. The H minority heating scenario is found to result in strong absorption by resonant H ions as compared to competing absorption mechanisms and dominant background electron heating for H concentrations up to 10%. The highest H absorption of ∼80% of the applied ICRF power and highest ion temperature of ∼15 keV are obtained with an H concentration of 10%. For the three-ion scheme in 85%:15% H:4He plasma, PION+ETS predicts 3He absorption in the range of 21–65% for 3He concentrations in the range of 0.01–0.20%, with the highest 3He absorption at a 3He concentration of 0.20%.
利用 PION+ETS 集成建模分析国际热核实验堆非活动等离子体中的 ICRF 加热方案
PION 代码已被集成到欧洲传输求解器(ETS)传输工作流程中,我们首次将其应用于模拟下一步聚变反应堆 ITER 中的离子回旋共振频率(ICRF)加热情况。我们介绍了预测性、自洽性和随时间变化的模拟结果,其中共振离子浓度的变化研究了其对性能的影响,特别强调了由此产生的体离子加热和热离子温度。我们重点研究了两种 ICRF 加热方案,即在 2.65 T/7.5 MA 的 4He 等离子体中进行基本 H 少数加热,以及在 3.3 T/8.8 MA 的 H-4He 等离子体中进行由基本 3He 加热组成的三离子 ICRF 方案。研究发现,在 H 浓度高达 10%的情况下,与其他吸收机制和占主导地位的背景电子加热相比,H 少数加热方案会导致共振 H 离子的强烈吸收。当 H 浓度为 10%时,H 吸收率最高,达到所应用 ICRF 功率的 80%,离子温度最高,达到 15 keV。对于 85%:15% H:4He 等离子体中的三离子方案,PION+ETS 预测 3He 吸收率在 21-65% 之间,3He 浓度在 0.01-0.20% 之间,3He 吸收率在 0.20% 时最高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
2.30
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