Validation Experiments on the 2-MW CW 170-GHz Load for the European ITER Gyrotron
| العنوان: | Validation Experiments on the 2-MW CW 170-GHz Load for the European ITER Gyrotron |
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| المؤلفون: | Ryosuke Ikeda, A. Nardone, Masashi Hayashibara, Koji Takahashi, Masayuki Terakado, Takashi Aoki, Alessandro Bruschi, Yasuhisa Oda, William Bin, F. Dell'Era, Keishi Sakamoto, Naoaki Tsubota, N. Spinicchia, Alessandro Simonetto, D. Minelli |
| المصدر: | IEEE transactions on plasma science 45 (2017): 501. doi:10.1109/TPS.2017.2658184 info:cnr-pdr/source/autori:Bin W.; Bruschi A.; Takahashi K.; Ikeda R.; Oda Y.; Aoki T.; Dell'Era F.; Hayashibara M.; Minelli D.; Nardone A.; Sakamoto K.; Simonetto A.; Spinicchia N.; Terakado M.; Tsubota N./titolo:Validation Experiments on the 2-MW CW 170-GHz Load for the European ITER Gyrotron/doi:10.1109%2FTPS.2017.2658184/rivista:IEEE transactions on plasma science/anno:2017/pagina_da:501/pagina_a:/intervallo_pagine:501/volume:45 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Dummy load, Nuclear and High Energy Physics, gyrotron, Thermonuclear fusion, Materials science, business.industry, Nuclear engineering, Electrical engineering, Fusion power, Condensed Matter Physics, 01 natural sciences, Pressure sensor, matched load, 010305 fluids & plasmas, law.invention, Continuous wave (CW) operations, law, Thermocouple, Gyrotron, 0103 physical sciences, Continuous wave, 010306 general physics, business, Electronic circuit |
| الوصف: | The development of high-power gyrotrons needs matched loads with good performance capable of absorbing and measuring powers as high as 1 MW in the International Thermonuclear Experimental Reactor (ITER) and higher (up to two times) in the future devices, such as the DEMOnstrating fusion power reactor. At Istituto di Fisica del Plasma - Consiglio Nazionale delle Ricerche IFP-CNR (Milan), several spherical loads were developed, all with identical absorbing geometry but different heat removal systems for operations with pulselengths (PLs) from a few milliseconds to continuous wave (CW). A dummy load designed for 2-MW CW 170-GHz operations has been constructed in the frame of the development program of the European gyrotron for ITER. The first prototype hemisphere of this load, joined with an uncoated one, has been successfully tested with long pulses and under vacuum using the gyrotron for ITER of the National Institutes for Quantum and Radiological Science and Technology in Naka. The symmetry of the system is such that the equivalent power (EP) load of the absorbing (coated) hemisphere is doubled when the second one is reflective (uncoated), with an almost unchanged distribution with respect to a fully coated load. The tests demonstrate the capability of the IFP-CNR load to withstand and measure radiation at an EP in an excess of 1.5MW. Experiments involving gyrotron pulses with increasing power and PL have been performed in the load and are reported. The maximum EP load reached in the tests was $\approx 1.8$ MW for 15 s while the longest pulse was 300 s, at $\approx 1$ MW. During the experiments, the temperatures of either the load or the preload were monitored using thermocouples and multiple infrared cameras, while a pressure sensor and a hydrophone have been used for the monitoring of cavitation phenomena and water boiling in the cooling circuits. The results achieved in the tests are described in this paper. |
| تدمد: | 1939-9375 0093-3813 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8772f8f1f1b5a5fcca4b90e7447c0877Test https://doi.org/10.1109/tps.2017.2658184Test |
| حقوق: | RESTRICTED |
| رقم الانضمام: | edsair.doi.dedup.....8772f8f1f1b5a5fcca4b90e7447c0877 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19399375 00933813 |
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