一个紧而便携的马射线光谱仪 (GRASP) 用于惯性封闭核聚变和基础科学实验
S G Dannhoff1, C W Wink1, S Mackie1
1Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
The Review of scientific instruments
|August 5, 2024
概括
一个新的紧型马射线光谱仪有助于惯性封闭核聚变研究. 这种便携式设备可以诊断马射线光谱,推动核聚变能源目标和基础科学发现.
科学领域:
- 核物理与工程 核物理与工程
- 高能物理仪器仪器仪表 高能物理仪器仪表
背景情况:
- 惯性封闭融合 (ICF) 研究需要对马射线光谱进行精确的诊断.
- 现有的马射线光谱仪可能很庞大,限制了它们在Omega和国家点火设施 (NIF) 等设施的部署.
- 精确的光谱测量对于在ICF中实现高能量增益和基础物理研究至关重要.
研究的目的:
- 为ICF应用设计一个紧且便携的马射线光谱仪.
- 为了能够对3.717.9 MeV范围内的马射线光谱进行详细的诊断.
- 为了方便在主要激光设施的诊断端口进行现场测试.
主要方法:
- 该系统使用一个用于康普顿散射的转换片,接着是四个磁谱仪臂.
- 永久磁铁的哈尔巴赫阵列形成了光谱仪磁铁,使用COSY INFINITY模拟进行了优化.
- 使用蒙特卡洛模拟来优化转换的性能.
主要成果:
- 设计的光谱仪覆盖了广的玛射线能量带宽 (∼3.717.9 MeV).
- 使用1.7毫米的转换薄膜,该系统实现了≤15.8%≤4.5%的能量分辨率和5.4 × 10−73.7 × 10−7 e−/γ的效率.
- 模拟表明该设计对模拟的直驱马射线光谱有效,并有可能进一步优化.
结论:
- 开发的紧型马射线光谱仪适合在ICF设施中部署.
- 它提供了有价值的光谱测量功能,用于推进ICF能量增益.
- 该仪器可以支持基础科学发现的新测量机会.
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