在大型核聚变实验中用于森散射诊断的校准技术
G Fuchert1, J Wagner1, L V Henschke1,2
1Max-Planck-Institut für Plasmaphysik (IPP), 17491 Greifswald, Germany.
The Review of scientific instruments
|August 16, 2024
概括
融合诊断的新校准方法提高了准确性,缩短了时间. 这些技术解决了诸如光束移位和窗户涂层等挑战,这对于未来的核聚变实验至关重要.
科学领域:
- 核聚变能源的研究.
- 血物理诊断 诊断 血物理诊断
- 光学校准技术的使用方法
背景情况:
- 大规模的核聚变实验需要稳定的激光诊断,长光束路径.
- 由于技术和组织的限制,校准程序变得复杂.
- 温德尔斯坦7-X (W7-X) 等中型实验作为新校准方法的试验台.
研究的目的:
- 开发和验证森散射诊断的新型校准技术.
- 为应对挑战,包括光束移位,窗户污染和W7-X的访问限制.
- 为了提高档案质量和缩短聚变等离子体测量校准时间.
主要方法:
- 开发了使用雷利散射进行现场光谱校准,用于全面的诊断校准.
- 采用可调节光学参数振荡器 (OPO) 流浪灯实现了快速光谱校准,避免了体大厅的访问.
- 建立了一个工作流程,以考虑校准源的有限线宽.
主要成果:
- 激光束的位置变化被最小化,在绝对校准过程中纠正剩余的位移.
- 雷利散射方法校准了整个诊断,包括观察窗口.
- 在几分钟内,OPO散光方法提供了更快,但不太准确的光谱校准.
结论:
- 开发的校准方法提高了森散射诊断在W7-X.的准确性和效率.
- 这些技术适用于当前和未来的核聚变实验,特别是那些具有严格访问限制的实验.
- 这些方法为要求苛刻的核聚变环境中的关键校准问题提供了解决方案.
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