Conceptual design of soft X-ray online calibration system for ICF
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摘要: 长期以来,惯性约束聚变(ICF)研究软X射线诊断科学仪器设备的元器件标定工作主要依赖同步辐射光源X射线辐射计量站进行。该类装置通常与用于开展ICF研究的大型激光装置分处两地,难以满足ICF研究软X射线元器件实时实地的标定应用需求。另外,由于同步辐射和ICF激光等离子体产生的X射线辐射特性存在较大差异,同步辐射计量站的标定结果事实上也不能完全反映元器件在ICF实验应用中的计量响应特性。本文首先介绍一种基于单光学元件的软X射线紧凑型无谐波光源单色化技术,以此为基础提出研制基于ICF激光等离子体X射线源的同源、同几何位形、双束比较校准的多能量通道光源单色化系统,用于ICF应用软X射线元器件的在线标定。新系统一方面可望满足ICF软X射线元器件实时实地的标定应用需求;另一方面,其提供的标定光束的技术特征将最大可能地接近ICF激光等离子体X射线辐射本身。配备相应的X射线二极管(XRD)和标准探测器之后,该系统将形成一套具有在线自校准功能的新型多通道δ能量响应软X射线能谱仪。Abstract: For a long time, the calibration of soft X-ray diagnostic equipment components of ICF research mainly depends on the synchrotron radiation source X-ray metrology station. This kind of device is usually located in a different place from the large laser facility for ICF research, thus it is difficult to meet the real-time field calibration application requirements of ICF’s research soft X-ray components research. In addition, in view of the great difference between the radiation characteristics of synchrotron radiation X-ray and ICF laser plasma X-ray, the calibration results of synchrotron radiation measurement station can not completely measure the response characteristics of components in ICF experiments. In this paper, a kind of monochromatic technology for compact non-harmonic soft X-ray source is introduced. Based on this technology, a monochromatic system of multi energy channel source based on ICF laser plasma X-ray source with homologous, geometric configuration and double beam comparison calibration is developed for on-line calibration of soft X-ray components in ICF applications. The new system is expected to meet the requirements of real-time calibration application of ICF’s soft X-ray components, while the technical characteristics of its calibration beam will be as close as possible to that of the ICF laser plasma X-ray radiation.
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Key words:
- inertial confinement fusion /
- soft X-ray /
- calibration /
- laser plasma /
- plasma diagnosis
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表 1 一款单元件软X射线单色仪的设计参数
Table 1. Design parameters of a single optical element soft X-ray monochromator
selected energy/
eVobject distance/
mmimage distance/
mmRZP
sizegrazing incident
angle/(°)exit angle/
(°)source size
(HHFW)/μmslit width/
μmband width
(E/∆E)500 1650 596 50 mm×10 mm 1.3 4.1 200 100 1000 表 2 神光-III原型装置ICF软X射线元器件在线标定系统能点分布
Table 2. Energy channel distribution of ICF soft X-ray component online calibration system for Shenguang-III prototype facility
channel No. energy /eV 1#/11# 20 2#/12# 300 3#/13# 400 4#/14# 500 5#/15# 640 6#/16# 950 7#/17# 1500 8#/18# 2500 9#/19# 4500 10#/20# 5000 -
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