Direct measurement of refracted trajectory of transmitting electron cyclotron beam through plasma on the Large Helical Device
| Autor: | Takahashi Hiromi, Kubo Shin, Shimozuma Takashi, Igami Hiroe, Yoshimura Yasuo, Ito Satoshi, Kobayasi Sakuji, Mizuno Yoshinori, Okada Kohta, Kamio Shuji, Mutoh Takashi, Osakabe Masaki, Nagasaki Kazunobu, Marushchenko Nikolai B., Turkin Yuriy |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | EPJ Web of Conferences, Vol 87, p 02019 (2015) |
| Druh dokumentu: | article |
| ISSN: | 2100-014X 09423389 |
| DOI: | 10.1051/epjconf/20158702019 |
| Popis: | The electron-cyclotron (EC) -beam refraction due to the presence of plasma was investigated in the Large Helical Device. The transmitted-EC-beam measurement system was constructed and the beam pattern on the opposite side of the irradiated surface was measured using an IR camera. Clear dependence of the EC-beam refraction on the electron density was observed and the beam shift in the toroidal direction showed good agreement with the ray-trace calculation of TRAVIS. The influence of the peripheral density profile and the thermal effect on the beam refraction were discussed. |
| Databáze: | Directory of Open Access Journals |
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