The Development of the Material Plasma Exposure Experiment
| العنوان: | The Development of the Material Plasma Exposure Experiment |
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| المؤلفون: | W. D. McGinnis, Dominic R Giuliano, Ronald James Ellis, E. J. Martin, Arnold Lumsdaine, Juergen Rapp, Richard H. Howard, D. L. Hillis, T. M. Biewer, R. H. Goulding, Timothy Lessard, H. Ray, Larry W Owen, Jeremy Lore, Steven J. Meitner, Venugopal Koikal Varma, John Caughman, T.S. Bigelow, G.C. Shaw, Robert C. Duckworth |
| المصدر: | IEEE Transactions on Plasma Science. 44:3456-3464 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Nuclear and High Energy Physics, Dense plasma focus, Materials science, Divertor, Nuclear engineering, Cyclotron, Superconducting magnet, Plasma, Fusion power, Condensed Matter Physics, 01 natural sciences, 010305 fluids & plasmas, law.invention, Helicon, law, 0103 physical sciences, Nuclear fusion, Atomic physics, 010306 general physics |
| الوصف: | The availability of future fusion devices, such as a fusion nuclear science facility or demonstration fusion power station, greatly depends on long operating lifetimes of plasma facing components in their divertors. ORNL is designing the Material Plasma Exposure eXperiment (MPEX), a superconducting magnet, steady-state device to address the plasma material interactions of fusion reactors. MPEX will utilize a new high-intensity plasma source concept based on RF technology. This source concept will allow the experiment to cover the entire expected plasma conditions in the divertor of a future fusion reactor. It will be able to study erosion and redeposition for relevant geometries with relevant electric and magnetic fields in-front of the target. MPEX is being designed to allow for the exposure of a priori neutron-irradiated samples. The target exchange chamber has been designed to undock from the linear plasma generator such that it can be transferred to diagnostics stations for more detailed surface analysis. MPEX is being developed in a staged approach with successively increased capabilities. After the initial development step of the helicon source and electron cyclotron heating system, the source concept is being tested in the Proto-MPEX device. Proto-MPEX has achieved electron densities of more than $4 \times 10^{19}~\text{m}^{-3}$ with a large diameter (13 cm) helicon antenna at 100 kW power. First heating with microwaves resulted in a higher ionization represented by higher electron densities on axis, when compared with the helicon plasma only without microwave heating. |
| تدمد: | 1939-9375 0093-3813 |
| DOI: | 10.1109/tps.2016.2628326 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::176d9075e1c0cf93f8c9259cc8e1c046 https://doi.org/10.1109/tps.2016.2628326 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........176d9075e1c0cf93f8c9259cc8e1c046 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19399375 00933813 |
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| DOI: | 10.1109/tps.2016.2628326 |