High power and high efficiency operation of 77 GHz gyrotrons by stepwise raising of the anode voltage
High power and high efficiency operation of 77 GHz gyrotrons was achieved by the stepwise raising of the anode voltage. In particular, a stable MOU output power of 1.8MW was obtained for 1 s. The effect of beam-charge neutralization on the oscillation characteristics was examined. The intended beam...
| Main Authors: | , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Journal article |
| Jezik: | English |
| Izdano: |
2012
|
| _version_ | 1826292492331384832 |
|---|---|
| author | Takahashi, H Shimozuma, T Ito, S Kubo, S Yoshimura, Y Igami, H Nishiura, M Kobayashi, S Mizuno, Y Okada, K Takita, Y Ogasawara, S Makino, R Mutoh, T Kariya, T Minami, R Imai, T |
| author_facet | Takahashi, H Shimozuma, T Ito, S Kubo, S Yoshimura, Y Igami, H Nishiura, M Kobayashi, S Mizuno, Y Okada, K Takita, Y Ogasawara, S Makino, R Mutoh, T Kariya, T Minami, R Imai, T |
| author_sort | Takahashi, H |
| collection | OXFORD |
| description | High power and high efficiency operation of 77 GHz gyrotrons was achieved by the stepwise raising of the anode voltage. In particular, a stable MOU output power of 1.8MW was obtained for 1 s. The effect of beam-charge neutralization on the oscillation characteristics was examined. The intended beam acceleration voltage was not initially reached due to the space-charge effect but was achieved over time through the charge neutralization process. By applying the stepped anode voltage, the gyrotron operational parameters were able to be optimized for the sufficiently accelerated electron beam, leading to the improvement of the output power and the electric efficiency. © 2012 The Japan Society of Plasma Science and Nuclear Fusion Research. |
| first_indexed | 2024-03-07T03:15:32Z |
| format | Journal article |
| id | oxford-uuid:b5a4f0ae-16db-4e7b-9536-d563b6dd9433 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:15:32Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:b5a4f0ae-16db-4e7b-9536-d563b6dd94332022-03-27T04:35:08ZHigh power and high efficiency operation of 77 GHz gyrotrons by stepwise raising of the anode voltageJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b5a4f0ae-16db-4e7b-9536-d563b6dd9433EnglishSymplectic Elements at Oxford2012Takahashi, HShimozuma, TIto, SKubo, SYoshimura, YIgami, HNishiura, MKobayashi, SMizuno, YOkada, KTakita, YOgasawara, SMakino, RMutoh, TKariya, TMinami, RImai, THigh power and high efficiency operation of 77 GHz gyrotrons was achieved by the stepwise raising of the anode voltage. In particular, a stable MOU output power of 1.8MW was obtained for 1 s. The effect of beam-charge neutralization on the oscillation characteristics was examined. The intended beam acceleration voltage was not initially reached due to the space-charge effect but was achieved over time through the charge neutralization process. By applying the stepped anode voltage, the gyrotron operational parameters were able to be optimized for the sufficiently accelerated electron beam, leading to the improvement of the output power and the electric efficiency. © 2012 The Japan Society of Plasma Science and Nuclear Fusion Research. |
| spellingShingle | Takahashi, H Shimozuma, T Ito, S Kubo, S Yoshimura, Y Igami, H Nishiura, M Kobayashi, S Mizuno, Y Okada, K Takita, Y Ogasawara, S Makino, R Mutoh, T Kariya, T Minami, R Imai, T High power and high efficiency operation of 77 GHz gyrotrons by stepwise raising of the anode voltage |
| title | High power and high efficiency operation of 77 GHz gyrotrons by stepwise raising of the anode voltage |
| title_full | High power and high efficiency operation of 77 GHz gyrotrons by stepwise raising of the anode voltage |
| title_fullStr | High power and high efficiency operation of 77 GHz gyrotrons by stepwise raising of the anode voltage |
| title_full_unstemmed | High power and high efficiency operation of 77 GHz gyrotrons by stepwise raising of the anode voltage |
| title_short | High power and high efficiency operation of 77 GHz gyrotrons by stepwise raising of the anode voltage |
| title_sort | high power and high efficiency operation of 77 ghz gyrotrons by stepwise raising of the anode voltage |
| work_keys_str_mv | AT takahashih highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT shimozumat highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT itos highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT kubos highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT yoshimuray highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT igamih highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT nishiuram highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT kobayashis highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT mizunoy highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT okadak highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT takitay highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT ogasawaras highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT makinor highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT mutoht highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT kariyat highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT minamir highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage AT imait highpowerandhighefficiencyoperationof77ghzgyrotronsbystepwiseraisingoftheanodevoltage |