ITER-relevant 600 s steady-state extraction of negative hydrogen ions at the test facility ELISE
The neutral beam heating system for the future international fusion experiment ITER will be based on radio-frequency driven ion sources delivering a large (≈1 × 2 m ^2 ) and homogeneous negative hydrogen or deuterium ion beam of several ten Amperes for several hundred seconds. The size scaling exper...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | Nuclear Fusion |
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| Online Access: | https://doi.org/10.1088/1741-4326/ad8e74 |
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| author | D. Wünderlich R. Riedl M. Fröschle A. Heiler A. Navarro D. Yordanov A. Döring U. Fantz |
| author_facet | D. Wünderlich R. Riedl M. Fröschle A. Heiler A. Navarro D. Yordanov A. Döring U. Fantz |
| author_sort | D. Wünderlich |
| collection | DOAJ |
| description | The neutral beam heating system for the future international fusion experiment ITER will be based on radio-frequency driven ion sources delivering a large (≈1 × 2 m ^2 ) and homogeneous negative hydrogen or deuterium ion beam of several ten Amperes for several hundred seconds. The size scaling experiment ELISE (Extraction from a Large Ion Source Experiment) is an integral part of the R&D road-map towards the ITER neutral beam heating system. Recently, 90% of the ITER target for the extracted current density was achieved in hydrogen for 600 s, increasing the pulse length over which such current densities can be achieved by a factor of more than ten. For ten second beam pulses the ITER target current density was achieved. These breakthrough results are made possible by using a steady-state capable high-voltage power supply together with an improved version of internal potential rods and a modified topology of the magnetic filter field. |
| format | Article |
| id | doaj-art-ee768058e56246c2845e3d33ced6bd9e |
| institution | DOAJ |
| issn | 0029-5515 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Nuclear Fusion |
| spelling | doaj-art-ee768058e56246c2845e3d33ced6bd9e2025-08-20T02:49:54ZengIOP PublishingNuclear Fusion0029-55152024-01-0165101400110.1088/1741-4326/ad8e74ITER-relevant 600 s steady-state extraction of negative hydrogen ions at the test facility ELISED. Wünderlich0https://orcid.org/0000-0003-2810-9633R. Riedl1M. Fröschle2https://orcid.org/0000-0003-1297-4067A. Heiler3https://orcid.org/0000-0002-0026-0828A. Navarro4https://orcid.org/0009-0001-2321-7849D. Yordanov5https://orcid.org/0000-0001-5522-5301A. Döring6U. Fantz7https://orcid.org/0000-0003-2239-3477Max-Planck-Institut für Plasmaphysik , Boltzmannstraße 2, 85748 Garching, GermanyMax-Planck-Institut für Plasmaphysik , Boltzmannstraße 2, 85748 Garching, GermanyMax-Planck-Institut für Plasmaphysik , Boltzmannstraße 2, 85748 Garching, GermanyMax-Planck-Institut für Plasmaphysik , Boltzmannstraße 2, 85748 Garching, GermanyMax-Planck-Institut für Plasmaphysik , Boltzmannstraße 2, 85748 Garching, GermanyMax-Planck-Institut für Plasmaphysik , Boltzmannstraße 2, 85748 Garching, GermanyMax-Planck-Institut für Plasmaphysik , Boltzmannstraße 2, 85748 Garching, GermanyMax-Planck-Institut für Plasmaphysik , Boltzmannstraße 2, 85748 Garching, GermanyThe neutral beam heating system for the future international fusion experiment ITER will be based on radio-frequency driven ion sources delivering a large (≈1 × 2 m ^2 ) and homogeneous negative hydrogen or deuterium ion beam of several ten Amperes for several hundred seconds. The size scaling experiment ELISE (Extraction from a Large Ion Source Experiment) is an integral part of the R&D road-map towards the ITER neutral beam heating system. Recently, 90% of the ITER target for the extracted current density was achieved in hydrogen for 600 s, increasing the pulse length over which such current densities can be achieved by a factor of more than ten. For ten second beam pulses the ITER target current density was achieved. These breakthrough results are made possible by using a steady-state capable high-voltage power supply together with an improved version of internal potential rods and a modified topology of the magnetic filter field.https://doi.org/10.1088/1741-4326/ad8e74ITERneutral beam injectionnegative hydrogen ion sourceRF driven ion source |
| spellingShingle | D. Wünderlich R. Riedl M. Fröschle A. Heiler A. Navarro D. Yordanov A. Döring U. Fantz ITER-relevant 600 s steady-state extraction of negative hydrogen ions at the test facility ELISE Nuclear Fusion ITER neutral beam injection negative hydrogen ion source RF driven ion source |
| title | ITER-relevant 600 s steady-state extraction of negative hydrogen ions at the test facility ELISE |
| title_full | ITER-relevant 600 s steady-state extraction of negative hydrogen ions at the test facility ELISE |
| title_fullStr | ITER-relevant 600 s steady-state extraction of negative hydrogen ions at the test facility ELISE |
| title_full_unstemmed | ITER-relevant 600 s steady-state extraction of negative hydrogen ions at the test facility ELISE |
| title_short | ITER-relevant 600 s steady-state extraction of negative hydrogen ions at the test facility ELISE |
| title_sort | iter relevant 600 s steady state extraction of negative hydrogen ions at the test facility elise |
| topic | ITER neutral beam injection negative hydrogen ion source RF driven ion source |
| url | https://doi.org/10.1088/1741-4326/ad8e74 |
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