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| Format: | Preprint |
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2023
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| Online-Zugang: | https://arxiv.org/abs/2311.07755 |
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| _version_ | 1866913296392650752 |
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| author | Hansen, Edward C. Garcia-Rubio, Fernando Adams, Marissa B. P. Fatenejad, Milad Moczulski, Kasper Ney, Paul Rahman, Hafiz U. Reyes, Adam C. Ruskov, Emil Tranchant, Victor Tzeferacos, Petros |
| author_facet | Hansen, Edward C. Garcia-Rubio, Fernando Adams, Marissa B. P. Fatenejad, Milad Moczulski, Kasper Ney, Paul Rahman, Hafiz U. Reyes, Adam C. Ruskov, Emil Tranchant, Victor Tzeferacos, Petros |
| contents | Z-pinch platforms constitute a promising pathway to fusion energy research. Here, we present a one-dimensional numerical study of the staged Z-pinch (SZP) concept using the FLASH and MACH2 codes. We discuss the verification of the codes using two analytical benchmarks that include Z-pinch-relevant physics, building confidence on the codes' ability to model such experiments. Then, FLASH is used to simulate two different SZP configurations: a xenon gas-puff liner (SZP1*) and a silver solid liner (SZP2). The SZP2 results are compared against previously published MACH2 results, and a new code-to-code comparison on SZP1* is presented. Using an ideal equation of state and analytical transport coefficients, FLASH yields a fuel convergence ratio (CR) of approximately 39 and a mass-averaged fuel ion temperature slightly below 1 keV for the SZP2 scheme, significantly lower than the full-physics MACH2 prediction. For the new SZP1* configuration, full-physics FLASH simulations furnish large and inherently unstable CRs (> 300), but achieve fuel ion temperatures of many keV. While MACH2 also predicts high temperatures, the fuel stagnates at a smaller CR. The integrated code-to-code comparison reveals how magnetic insulation, heat conduction, and radiation transport affect platform performance and the feasibility of the SZP concept. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_07755 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Feasibility and Performance of the Staged Z-Pinch: A One-dimensional Study with FLASH and MACH2 Hansen, Edward C. Garcia-Rubio, Fernando Adams, Marissa B. P. Fatenejad, Milad Moczulski, Kasper Ney, Paul Rahman, Hafiz U. Reyes, Adam C. Ruskov, Emil Tranchant, Victor Tzeferacos, Petros Plasma Physics Computational Physics Z-pinch platforms constitute a promising pathway to fusion energy research. Here, we present a one-dimensional numerical study of the staged Z-pinch (SZP) concept using the FLASH and MACH2 codes. We discuss the verification of the codes using two analytical benchmarks that include Z-pinch-relevant physics, building confidence on the codes' ability to model such experiments. Then, FLASH is used to simulate two different SZP configurations: a xenon gas-puff liner (SZP1*) and a silver solid liner (SZP2). The SZP2 results are compared against previously published MACH2 results, and a new code-to-code comparison on SZP1* is presented. Using an ideal equation of state and analytical transport coefficients, FLASH yields a fuel convergence ratio (CR) of approximately 39 and a mass-averaged fuel ion temperature slightly below 1 keV for the SZP2 scheme, significantly lower than the full-physics MACH2 prediction. For the new SZP1* configuration, full-physics FLASH simulations furnish large and inherently unstable CRs (> 300), but achieve fuel ion temperatures of many keV. While MACH2 also predicts high temperatures, the fuel stagnates at a smaller CR. The integrated code-to-code comparison reveals how magnetic insulation, heat conduction, and radiation transport affect platform performance and the feasibility of the SZP concept. |
| title | Feasibility and Performance of the Staged Z-Pinch: A One-dimensional Study with FLASH and MACH2 |
| topic | Plasma Physics Computational Physics |
| url | https://arxiv.org/abs/2311.07755 |