A compact electron beam ion trap in support of high-temperature plasma diagnostics based on conduction-cooled superconducting coils
| Autor: | Qiangwang Hao, Bo Lyu, Yue-Mei Yang, Y. Y. Li, J. Fu, Chao Dai, Fudi Wang, Xuewei Du, Hongming Zhang, Qiuping Wang, Bin Bin, Jiuyuan Li |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Liquid helium business.industry Plasma Fusion power Cryocooler 01 natural sciences 010305 fluids & plasmas Ion law.invention Physics::Plasma Physics law Sputtering 0103 physical sciences Optoelectronics Plasma diagnostics business Instrumentation Electron beam ion trap |
| Zdroj: | The Review of scientific instruments. 92(6) |
| ISSN: | 1089-7623 |
| Popis: | Spectroscopic diagnostics of future fusion reactor plasmas require information on impurity line emissions, especially for relevant high-Z metal elements (e.g., tungsten). These materials will be widely used as plasma facing components for their high heat tolerance and low sputtering yield. Based on an electron beam ion trap, a compact impurity spectra platform is developed to mimic the high-temperature environment of a fusion reactor. The proposed platform can deliver a focused e-beam at energies over 30 keV using a confining magnetic field of ∼1.0 T generated by two superconducting coils (NbTi). Cooled by a closed-loop cryocooler, the coils can avoid the usage of a complicated cryogenic system involving the handling of liquid helium. For spectroscopic studies of highly charged ions, a spherically curved crystal spectrometer is proposed to measure a wavelength range around 2–4 A covering the typical wavelength range expected to be emitted by metal ions in a fusion plasma. This paper reports the design and development progress of the platform. |
| Databáze: | OpenAIRE |
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