ECW/EBW heating and current drive experiment results and prospects for CW operation in QUEST
A CW phased-array antenna system for electron cyclotron/Bernstein wave heating and current drive (ECWH/CD, EBWH/CD) experiments was developed in the QUEST. The antenna was designed to excite an elliptically polarized pure O-mode wave in oblique injection for the O-X-B mode conversion scenario, and i...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
2012
|
| _version_ | 1797063899225260032 |
|---|---|
| author | Idei, H Zushi, H Hanada, K Kalinnikova, E Nakamura, K Fujisawa, A Nagashima, Y Hasegawa, M Matsuoka, K Kariya, T Imai, T Minami, R Yoshida, N Sakamoto, M Watanabe, H Tokunaga, K Ejiri, A Sakaguchi, M Ishiguro, M Tashima, S Fukuyama, A Igami, H Kubo, S Isobe, M Nagaoka, K |
| author_facet | Idei, H Zushi, H Hanada, K Kalinnikova, E Nakamura, K Fujisawa, A Nagashima, Y Hasegawa, M Matsuoka, K Kariya, T Imai, T Minami, R Yoshida, N Sakamoto, M Watanabe, H Tokunaga, K Ejiri, A Sakaguchi, M Ishiguro, M Tashima, S Fukuyama, A Igami, H Kubo, S Isobe, M Nagaoka, K |
| author_sort | Idei, H |
| collection | OXFORD |
| description | A CW phased-array antenna system for electron cyclotron/Bernstein wave heating and current drive (ECWH/CD, EBWH/CD) experiments was developed in the QUEST. The antenna was designed to excite an elliptically polarized pure O-mode wave in oblique injection for the O-X-B mode conversion scenario, and its good performance was confirmed at a high power level. Long pulse discharges with a plasma current of 10 kA and 15 kA were non-inductively attained for 37 s and 20 s, respectively, with only radio frequency (RF) power. Divertor configurationswere also obtained in the RF-sustained plasmas. A new operational window for sustained plasma current was observed in the high-density plasma with a higher RF incident power. Two new heating and current drive systems with an 8.56GHz klystron and a 28GHz gyrotron are being prepared to conduct CW EBWH/CD experiments in the high-density plasma. © 2012 The Japan Society of Plasma Science and Nuclear Fusion Research. |
| first_indexed | 2024-03-06T21:06:33Z |
| format | Journal article |
| id | oxford-uuid:3ca9479e-9b17-4a99-837a-4d3cbf133f4b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:06:33Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:3ca9479e-9b17-4a99-837a-4d3cbf133f4b2022-03-26T14:15:05ZECW/EBW heating and current drive experiment results and prospects for CW operation in QUESTJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3ca9479e-9b17-4a99-837a-4d3cbf133f4bEnglishSymplectic Elements at Oxford2012Idei, HZushi, HHanada, KKalinnikova, ENakamura, KFujisawa, ANagashima, YHasegawa, MMatsuoka, KKariya, TImai, TMinami, RYoshida, NSakamoto, MWatanabe, HTokunaga, KEjiri, ASakaguchi, MIshiguro, MTashima, SFukuyama, AIgami, HKubo, SIsobe, MNagaoka, KA CW phased-array antenna system for electron cyclotron/Bernstein wave heating and current drive (ECWH/CD, EBWH/CD) experiments was developed in the QUEST. The antenna was designed to excite an elliptically polarized pure O-mode wave in oblique injection for the O-X-B mode conversion scenario, and its good performance was confirmed at a high power level. Long pulse discharges with a plasma current of 10 kA and 15 kA were non-inductively attained for 37 s and 20 s, respectively, with only radio frequency (RF) power. Divertor configurationswere also obtained in the RF-sustained plasmas. A new operational window for sustained plasma current was observed in the high-density plasma with a higher RF incident power. Two new heating and current drive systems with an 8.56GHz klystron and a 28GHz gyrotron are being prepared to conduct CW EBWH/CD experiments in the high-density plasma. © 2012 The Japan Society of Plasma Science and Nuclear Fusion Research. |
| spellingShingle | Idei, H Zushi, H Hanada, K Kalinnikova, E Nakamura, K Fujisawa, A Nagashima, Y Hasegawa, M Matsuoka, K Kariya, T Imai, T Minami, R Yoshida, N Sakamoto, M Watanabe, H Tokunaga, K Ejiri, A Sakaguchi, M Ishiguro, M Tashima, S Fukuyama, A Igami, H Kubo, S Isobe, M Nagaoka, K ECW/EBW heating and current drive experiment results and prospects for CW operation in QUEST |
| title | ECW/EBW heating and current drive experiment results and prospects for CW operation in QUEST |
| title_full | ECW/EBW heating and current drive experiment results and prospects for CW operation in QUEST |
| title_fullStr | ECW/EBW heating and current drive experiment results and prospects for CW operation in QUEST |
| title_full_unstemmed | ECW/EBW heating and current drive experiment results and prospects for CW operation in QUEST |
| title_short | ECW/EBW heating and current drive experiment results and prospects for CW operation in QUEST |
| title_sort | ecw ebw heating and current drive experiment results and prospects for cw operation in quest |
| work_keys_str_mv | AT ideih ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT zushih ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT hanadak ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT kalinnikovae ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT nakamurak ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT fujisawaa ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT nagashimay ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT hasegawam ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT matsuokak ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT kariyat ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT imait ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT minamir ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT yoshidan ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT sakamotom ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT watanabeh ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT tokunagak ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT ejiria ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT sakaguchim ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT ishigurom ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT tashimas ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT fukuyamaa ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT igamih ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT kubos ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT isobem ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest AT nagaokak ecwebwheatingandcurrentdriveexperimentresultsandprospectsforcwoperationinquest |