Progress in the Understanding of Gridded Inertial Electrostatic Confinement Devices at the University of Wisconsin
| Autor: | R. L. Bonomo, Gabriel Becerra, Aaron Fancher, M. K. Michalak, C. M. Schuff, John F. Santarius, A. M. McEvoy, Karla Hall, Marcos Navarro, Matthew J. Jasica, Lauren M. Garrison, Gilbert Emmert, Gerald L. Kulcinski |
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| Rok vydání: | 2015 |
| Předmět: |
010302 applied physics
Nuclear and High Energy Physics Materials science Mechanical Engineering Tungsten alloy chemistry.chemical_element High voltage Plasma 01 natural sciences Engineering physics 010305 fluids & plasmas Nuclear Energy and Engineering chemistry 0103 physical sciences General Materials Science Fusion rate Helium Civil and Structural Engineering Inertial electrostatic confinement |
| Zdroj: | Fusion Science and Technology. 68:314-318 |
| ISSN: | 1943-7641 1536-1055 |
| DOI: | 10.13182/fst14-934 |
| Popis: | For nearly two decades, as many as 4 Inertial Electrostatic Confinement (IEC) devices have been operated simultaneously at the University of Wisconsin-Madison. Over that time period we have learned that the early perceptions of how IEC devices operate are quite different from the actual performance in the Laboratory. Over the past 2 years we have gained even more understanding of IEC physics and technology. Experimental measurements and theoretical improvements have better characterized both the negative ions that contribute up to ~10% of the fusion rate in some cases and the neutral energy distributions in IEC devices at moderate pressure (0.07-0.7 Pa ≈ 0.5-5 mTorr). We also now understand more of why operation with helium plasmas has such a detrimental effect on high voltage performance of the traditional tungsten alloy grid wires. Most of the previous IEC work had been confined to < 100 kV with short operation times up to 150 kV. We have recently expanded our operating regime to ≈ 200 kV anode-cathode ... |
| Databáze: | OpenAIRE |
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