Optimization of high power and high efficiency operation of 77GHz gyrotrons for ECRH in the large helical device
Three Mega-Watt 77GHz gyrotrons were developed for an ECRH system in LHD. Their operation could be highly optimized by means of two-step rise of an anode voltage. Output power of 1.78MW with 37.9% efficiency were obtained in the 3rd gyrotron. The system improvement has been promoted including the de...
| Main Authors: | , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Conference item |
| Published: |
2011
|
| _version_ | 1826273218981265408 |
|---|---|
| author | Shimozuma, T Takahashi, H Ito, S Kobayashi, S Kubo, S Yoshimura, Y Igami, H Nishiura, M Ogasawara, S Makino, R Mizuno, Y Okada, K Takita, Y Ito, Y Mutoh, T Minami, R Kariya, T Imai, T |
| author_facet | Shimozuma, T Takahashi, H Ito, S Kobayashi, S Kubo, S Yoshimura, Y Igami, H Nishiura, M Ogasawara, S Makino, R Mizuno, Y Okada, K Takita, Y Ito, Y Mutoh, T Minami, R Kariya, T Imai, T |
| author_sort | Shimozuma, T |
| collection | OXFORD |
| description | Three Mega-Watt 77GHz gyrotrons were developed for an ECRH system in LHD. Their operation could be highly optimized by means of two-step rise of an anode voltage. Output power of 1.78MW with 37.9% efficiency were obtained in the 3rd gyrotron. The system improvement has been promoted including the development of a mmw-beam position and profile monitor. © 2011 IEEE. |
| first_indexed | 2024-03-06T22:24:51Z |
| format | Conference item |
| id | oxford-uuid:56516ef7-fc12-441f-b792-7200e068ce1a |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:24:51Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:56516ef7-fc12-441f-b792-7200e068ce1a2022-03-26T16:49:35ZOptimization of high power and high efficiency operation of 77GHz gyrotrons for ECRH in the large helical deviceConference itemhttp://purl.org/coar/resource_type/c_5794uuid:56516ef7-fc12-441f-b792-7200e068ce1aSymplectic Elements at Oxford2011Shimozuma, TTakahashi, HIto, SKobayashi, SKubo, SYoshimura, YIgami, HNishiura, MOgasawara, SMakino, RMizuno, YOkada, KTakita, YIto, YMutoh, TMinami, RKariya, TImai, TThree Mega-Watt 77GHz gyrotrons were developed for an ECRH system in LHD. Their operation could be highly optimized by means of two-step rise of an anode voltage. Output power of 1.78MW with 37.9% efficiency were obtained in the 3rd gyrotron. The system improvement has been promoted including the development of a mmw-beam position and profile monitor. © 2011 IEEE. |
| spellingShingle | Shimozuma, T Takahashi, H Ito, S Kobayashi, S Kubo, S Yoshimura, Y Igami, H Nishiura, M Ogasawara, S Makino, R Mizuno, Y Okada, K Takita, Y Ito, Y Mutoh, T Minami, R Kariya, T Imai, T Optimization of high power and high efficiency operation of 77GHz gyrotrons for ECRH in the large helical device |
| title | Optimization of high power and high efficiency operation of 77GHz gyrotrons for ECRH in the large helical device |
| title_full | Optimization of high power and high efficiency operation of 77GHz gyrotrons for ECRH in the large helical device |
| title_fullStr | Optimization of high power and high efficiency operation of 77GHz gyrotrons for ECRH in the large helical device |
| title_full_unstemmed | Optimization of high power and high efficiency operation of 77GHz gyrotrons for ECRH in the large helical device |
| title_short | Optimization of high power and high efficiency operation of 77GHz gyrotrons for ECRH in the large helical device |
| title_sort | optimization of high power and high efficiency operation of 77ghz gyrotrons for ecrh in the large helical device |
| work_keys_str_mv | AT shimozumat optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT takahashih optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT itos optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT kobayashis optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT kubos optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT yoshimuray optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT igamih optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT nishiuram optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT ogasawaras optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT makinor optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT mizunoy optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT okadak optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT takitay optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT itoy optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT mutoht optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT minamir optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT kariyat optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice AT imait optimizationofhighpowerandhighefficiencyoperationof77ghzgyrotronsforecrhinthelargehelicaldevice |