Investigation of ICRF heating effect in anchor region on GAMMA 10/PDX

Mafumi Hirata; Junpei Itagaki; Ryuya Ikezoe; Makoto Ichimura; Shuhei Sumida; Seowon Jang; Koki Izumi; Atsuto Tanaka; Yushi Kubota; Ryo Sekine; Hiroki Kayano; Mizuki Sakamoto; Yousuke Nakashima

doi:10.1585/pfr.14.2402055

Investigation of ICRF heating effect in anchor region on GAMMA 10/PDX

Mafumi Hirata, Junpei Itagaki, Ryuya Ikezoe, Makoto Ichimura, Shuhei Sumida, Seowon Jang, Koki Izumi, Atsuto Tanaka, Yushi Kubota, Ryo Sekine, Hiroki Kayano, Mizuki Sakamoto, Yousuke Nakashima

Advanced Fusion Research Center

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

To investigate end-loss plasma control, several heating operations were carried out using ion-cyclotron range of frequency (ICRF) heating systems in GAMMA 10/PDX. In anchor region, one of the important heating positions to control the end loss particle and heat fluxes, excited ICRF waves are measured as the density fluctuations using an upgraded reflectometer system and the detailed radial profiles are observed. The efficiency of anchor heating was changed using the phase control between two antennas installed in the anchor and/or the central region. The interference of two waves during a phase-control ICRF heating has been directly measured inside the plasma. In addition, several phase dependencies were observed using absorption methods with photodiode in anchor region.

Original language	English
Article number	2402055
Journal	Plasma and Fusion Research
Volume	14
Issue number	Specialissue1
DOIs	https://doi.org/10.1585/pfr.14.2402055
Publication status	Published - 2019

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1585/pfr.14.2402055

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title = "Investigation of ICRF heating effect in anchor region on GAMMA 10/PDX",

abstract = "To investigate end-loss plasma control, several heating operations were carried out using ion-cyclotron range of frequency (ICRF) heating systems in GAMMA 10/PDX. In anchor region, one of the important heating positions to control the end loss particle and heat fluxes, excited ICRF waves are measured as the density fluctuations using an upgraded reflectometer system and the detailed radial profiles are observed. The efficiency of anchor heating was changed using the phase control between two antennas installed in the anchor and/or the central region. The interference of two waves during a phase-control ICRF heating has been directly measured inside the plasma. In addition, several phase dependencies were observed using absorption methods with photodiode in anchor region.",

author = "Mafumi Hirata and Junpei Itagaki and Ryuya Ikezoe and Makoto Ichimura and Shuhei Sumida and Seowon Jang and Koki Izumi and Atsuto Tanaka and Yushi Kubota and Ryo Sekine and Hiroki Kayano and Mizuki Sakamoto and Yousuke Nakashima",

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year = "2019",

doi = "10.1585/pfr.14.2402055",

language = "English",

volume = "14",

journal = "Plasma and Fusion Research",

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publisher = "The Japan Society of Plasma Science and Nuclear Fusion Research (JSPF)",

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TY - JOUR

T1 - Investigation of ICRF heating effect in anchor region on GAMMA 10/PDX

AU - Hirata, Mafumi

AU - Itagaki, Junpei

AU - Ikezoe, Ryuya

AU - Ichimura, Makoto

AU - Sumida, Shuhei

AU - Jang, Seowon

AU - Izumi, Koki

AU - Tanaka, Atsuto

AU - Kubota, Yushi

AU - Sekine, Ryo

AU - Kayano, Hiroki

AU - Sakamoto, Mizuki

AU - Nakashima, Yousuke

PY - 2019

Y1 - 2019

N2 - To investigate end-loss plasma control, several heating operations were carried out using ion-cyclotron range of frequency (ICRF) heating systems in GAMMA 10/PDX. In anchor region, one of the important heating positions to control the end loss particle and heat fluxes, excited ICRF waves are measured as the density fluctuations using an upgraded reflectometer system and the detailed radial profiles are observed. The efficiency of anchor heating was changed using the phase control between two antennas installed in the anchor and/or the central region. The interference of two waves during a phase-control ICRF heating has been directly measured inside the plasma. In addition, several phase dependencies were observed using absorption methods with photodiode in anchor region.

AB - To investigate end-loss plasma control, several heating operations were carried out using ion-cyclotron range of frequency (ICRF) heating systems in GAMMA 10/PDX. In anchor region, one of the important heating positions to control the end loss particle and heat fluxes, excited ICRF waves are measured as the density fluctuations using an upgraded reflectometer system and the detailed radial profiles are observed. The efficiency of anchor heating was changed using the phase control between two antennas installed in the anchor and/or the central region. The interference of two waves during a phase-control ICRF heating has been directly measured inside the plasma. In addition, several phase dependencies were observed using absorption methods with photodiode in anchor region.

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JO - Plasma and Fusion Research

JF - Plasma and Fusion Research

IS - Specialissue1

M1 - 2402055

ER -

Investigation of ICRF heating effect in anchor region on GAMMA 10/PDX

Abstract

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