Comment on "ENN's roadmap for proton-boron fusion based on spherical torus" [Phys. Plasmas 31, 062507 (2024)]
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866911990557966336 |
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| author | Li, Zhi |
| author_facet | Li, Zhi |
| contents | This comment discusses the feasibility of hot ion mode ${{T}_{i}}/{{T}_{e}}=4$ for proton-boron fusion which is critical for the roadmap proposed in Liu, M et al [Phys. Plasmas 31, 062507 (2024)]. The hot ion mode ${{T}_{i}}/{{T}_{e}}=4$ has been calculated to be far from accessible (${{T}_{i}}/{{T}_{e}}<1.5$ for ${{T}_{i}}=150\text{keV}$) under the most optimal conditions if fusion provides the heating (Xie, H [Introduction to Fusion Ignition Principles: Zeroth Order Factors of Fusion Energy Research (in Chinese), USTC Press, Hefei, 2023]), i.e., that all fusion power serves to heat the ions and that electrons acquire energy only through interactions with ions. We also discuss if hot ion mode of ${{T}_{i}}/{{T}_{e}}=4$ could be achieved by an ideal heating method which is much more efficient than fusion itself (near 20 times fusion power for ${{T}_{i}}=150\text{keV}$) and only heats the ions, whether it makes sense economically. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_15495 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Comment on "ENN's roadmap for proton-boron fusion based on spherical torus" [Phys. Plasmas 31, 062507 (2024)] Li, Zhi Plasma Physics This comment discusses the feasibility of hot ion mode ${{T}_{i}}/{{T}_{e}}=4$ for proton-boron fusion which is critical for the roadmap proposed in Liu, M et al [Phys. Plasmas 31, 062507 (2024)]. The hot ion mode ${{T}_{i}}/{{T}_{e}}=4$ has been calculated to be far from accessible (${{T}_{i}}/{{T}_{e}}<1.5$ for ${{T}_{i}}=150\text{keV}$) under the most optimal conditions if fusion provides the heating (Xie, H [Introduction to Fusion Ignition Principles: Zeroth Order Factors of Fusion Energy Research (in Chinese), USTC Press, Hefei, 2023]), i.e., that all fusion power serves to heat the ions and that electrons acquire energy only through interactions with ions. We also discuss if hot ion mode of ${{T}_{i}}/{{T}_{e}}=4$ could be achieved by an ideal heating method which is much more efficient than fusion itself (near 20 times fusion power for ${{T}_{i}}=150\text{keV}$) and only heats the ions, whether it makes sense economically. |
| title | Comment on "ENN's roadmap for proton-boron fusion based on spherical torus" [Phys. Plasmas 31, 062507 (2024)] |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2406.15495 |