ECRH/EBWH system for NSTX-U
The National Spherical Torus Experiment Upgrade (NSTX-U) will operate at an axial toroidal field of up to 1 T, about twice the field available on NSTX. A 28 GHz electron cylotron resonance heating (ECRH) system is currently being planned for NSTX-U. A 1 MW 28 GHz gyrotron will be employed. Intially...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2012-09-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20123202014 |
| _version_ | 1818909374277484544 |
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| author | Hosea J.C. Harvey R.W. Ellis R.A. Taylor G. Smirnov A.P. |
| author_facet | Hosea J.C. Harvey R.W. Ellis R.A. Taylor G. Smirnov A.P. |
| author_sort | Hosea J.C. |
| collection | DOAJ |
| description | The National Spherical Torus Experiment Upgrade (NSTX-U) will operate at an axial toroidal field of up to 1 T, about twice the field available on NSTX. A 28 GHz electron cylotron resonance heating (ECRH) system is currently being planned for NSTX-U. A 1 MW 28 GHz gyrotron will be employed. Intially the system will use short, 10-50 ms, 1 MW pulses for ECRH-assisted discharge start-up. Later the pulse length will be extended to 1-5 s to study electron Bernstein wave heating (EBWH) during the plasma current flat top. A mirror launcher will be used to couple microwave power to the plasma via O-mode to the slow X-mode to EBW (O-X-B) double mode conversion. This paper presents a pre-conceptual design for the ECRH/EBWH system proposed for NSTX-U and includes ray tracing and Fokker-Planck modeling results for 28 GHz ECRH during plasma start-up and EBW heating and current drive during the plasma current flattop of a NSTX-U advanced H-mode plasma scenario. |
| first_indexed | 2024-12-19T22:25:54Z |
| format | Article |
| id | doaj.art-c8732be281844865a092aad70d166cb6 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-19T22:25:54Z |
| publishDate | 2012-09-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-c8732be281844865a092aad70d166cb62022-12-21T20:03:31ZengEDP SciencesEPJ Web of Conferences2100-014X2012-09-01320201410.1051/epjconf/20123202014ECRH/EBWH system for NSTX-UHosea J.C.Harvey R.W.Ellis R.A.Taylor G.Smirnov A.P.The National Spherical Torus Experiment Upgrade (NSTX-U) will operate at an axial toroidal field of up to 1 T, about twice the field available on NSTX. A 28 GHz electron cylotron resonance heating (ECRH) system is currently being planned for NSTX-U. A 1 MW 28 GHz gyrotron will be employed. Intially the system will use short, 10-50 ms, 1 MW pulses for ECRH-assisted discharge start-up. Later the pulse length will be extended to 1-5 s to study electron Bernstein wave heating (EBWH) during the plasma current flat top. A mirror launcher will be used to couple microwave power to the plasma via O-mode to the slow X-mode to EBW (O-X-B) double mode conversion. This paper presents a pre-conceptual design for the ECRH/EBWH system proposed for NSTX-U and includes ray tracing and Fokker-Planck modeling results for 28 GHz ECRH during plasma start-up and EBW heating and current drive during the plasma current flattop of a NSTX-U advanced H-mode plasma scenario.http://dx.doi.org/10.1051/epjconf/20123202014 |
| spellingShingle | Hosea J.C. Harvey R.W. Ellis R.A. Taylor G. Smirnov A.P. ECRH/EBWH system for NSTX-U EPJ Web of Conferences |
| title | ECRH/EBWH system for NSTX-U |
| title_full | ECRH/EBWH system for NSTX-U |
| title_fullStr | ECRH/EBWH system for NSTX-U |
| title_full_unstemmed | ECRH/EBWH system for NSTX-U |
| title_short | ECRH/EBWH system for NSTX-U |
| title_sort | ecrh ebwh system for nstx u |
| url | http://dx.doi.org/10.1051/epjconf/20123202014 |
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