Design of a steerable launcher for the ECH system on KSTAR
105/140Ghz dual frequency gyrotron is used in KSTAR tokamak for an electron cyclotron resonance heating (ECRH). The ECH launcher consists of a fixed mirror, a steering mirror, cooling systems and some mechanical component for a steering mirror. We have designed the fixed ellipsoidal focusing mirror...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2017-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://doi.org/10.1051/epjconf/201715703022 |
| _version_ | 1831583229940858880 |
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| author | Kim S. G. Jeong M. Han J. W. Wang S. J. Kim D. S. Choi M. S. |
| author_facet | Kim S. G. Jeong M. Han J. W. Wang S. J. Kim D. S. Choi M. S. |
| author_sort | Kim S. G. |
| collection | DOAJ |
| description | 105/140Ghz dual frequency gyrotron is used in KSTAR tokamak for an electron cyclotron resonance heating (ECRH). The ECH launcher consists of a fixed mirror, a steering mirror, cooling systems and some mechanical component for a steering mirror. We have designed the fixed ellipsoidal focusing mirror for an efficient heating and localized control. The beam radius using the existing ECH launcher system is about 45 mm at the resonance layer. On the other hand, the modified launcher mirror reduces the beam size at the resonance layer for incident RF beam to 38 mm. The design results showed good agreement compared with the computation and simulation results. Since the distance between the corrugated waveguide and the fixed focusing mirror is fixed, it is difficult to more reduce the beam size. However, reduced beam size is small enough to localize MHD control and heating. |
| first_indexed | 2024-12-17T20:37:12Z |
| format | Article |
| id | doaj.art-cb3c302cc0f146279a7eae0960f62ff3 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-17T20:37:12Z |
| publishDate | 2017-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-cb3c302cc0f146279a7eae0960f62ff32022-12-21T21:33:24ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011570302210.1051/epjconf/201715703022epjconf_rfppc2017_03022Design of a steerable launcher for the ECH system on KSTARKim S. G.Jeong M.Han J. W.Wang S. J.Kim D. S.Choi M. S.105/140Ghz dual frequency gyrotron is used in KSTAR tokamak for an electron cyclotron resonance heating (ECRH). The ECH launcher consists of a fixed mirror, a steering mirror, cooling systems and some mechanical component for a steering mirror. We have designed the fixed ellipsoidal focusing mirror for an efficient heating and localized control. The beam radius using the existing ECH launcher system is about 45 mm at the resonance layer. On the other hand, the modified launcher mirror reduces the beam size at the resonance layer for incident RF beam to 38 mm. The design results showed good agreement compared with the computation and simulation results. Since the distance between the corrugated waveguide and the fixed focusing mirror is fixed, it is difficult to more reduce the beam size. However, reduced beam size is small enough to localize MHD control and heating.https://doi.org/10.1051/epjconf/201715703022 |
| spellingShingle | Kim S. G. Jeong M. Han J. W. Wang S. J. Kim D. S. Choi M. S. Design of a steerable launcher for the ECH system on KSTAR EPJ Web of Conferences |
| title | Design of a steerable launcher for the ECH system on KSTAR |
| title_full | Design of a steerable launcher for the ECH system on KSTAR |
| title_fullStr | Design of a steerable launcher for the ECH system on KSTAR |
| title_full_unstemmed | Design of a steerable launcher for the ECH system on KSTAR |
| title_short | Design of a steerable launcher for the ECH system on KSTAR |
| title_sort | design of a steerable launcher for the ech system on kstar |
| url | https://doi.org/10.1051/epjconf/201715703022 |
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