Removal of particles by ICRF cleaning in HT-7 superconducting tokamak

Jian Sheng Hu; Jian Gang Li; Shou Yin Zhang; Xue Mao Gu; Xiao Dong Zhang; Yan Pin Zhao; Xian Zu Gong; Guang Li Kuang; Cheng Fu Li; Jia Rong Luo; Xiao Ming Wang; Xiang Gao; Bao Nian Wan; Ji Kang Xie; Yuan Xi Wan

doi:10.1088/1009-0630/3/1/005

Removal of particles by ICRF cleaning in HT-7 superconducting tokamak

Jian Sheng Hu
, Jian Gang Li
, Shou Yin Zhang
, Xue Mao Gu
, Xiao Dong Zhang
, Yan Pin Zhao
, Xian Zu Gong
, Guang Li Kuang
, Cheng Fu Li
, Jia Rong Luo
, Xiao Ming Wang
, Xiang Gao
, Bao Nian Wan
, Ji Kang Xie
, Yuan Xi Wan

School of Electrical Engineering

CAS - Institute of Plasma Physics

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

6 Scopus citations

Abstract

The ICRF (Ion Cyclotron Range Frequency) cleaning technique has been used as a routine wall cleaning method in the HT-7 superconducting tokamak. In a wide range of toroidal field, the removal rate of residual gas by ICRF cleaning was about twenty times higher than that of glow discharge cleaning (GDC). At different gas pressure and RF power levels, the ICRF cleaning is studied carefully. A good impurity cleaning effect and a very high hydrogen removal rate were obtained. The removal rate of hydrogen by 5 kW ICRF cleaning achieved was 1.6 × 10^-5 Torr.l/s. And the relationships among pressure P, outgassing rate Q, atomic layers L absorbed on surface and the cleaning mode were discussed briefly.

Original language	English
Pages (from-to)	621-627
Number of pages	7
Journal	Plasma Science and Technology
Volume	3
Issue number	1
DOIs	https://doi.org/10.1088/1009-0630/3/1/005
State	Published - 2001

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10.1088/1009-0630/3/1/005

Cite this

@article{4796a381450445af85a0818cfdf4b096,

title = "Removal of particles by ICRF cleaning in HT-7 superconducting tokamak",

abstract = "The ICRF (Ion Cyclotron Range Frequency) cleaning technique has been used as a routine wall cleaning method in the HT-7 superconducting tokamak. In a wide range of toroidal field, the removal rate of residual gas by ICRF cleaning was about twenty times higher than that of glow discharge cleaning (GDC). At different gas pressure and RF power levels, the ICRF cleaning is studied carefully. A good impurity cleaning effect and a very high hydrogen removal rate were obtained. The removal rate of hydrogen by 5 kW ICRF cleaning achieved was 1.6 × 10-5 Torr.l/s. And the relationships among pressure P, outgassing rate Q, atomic layers L absorbed on surface and the cleaning mode were discussed briefly.",

author = "Hu, \{Jian Sheng\} and Li, \{Jian Gang\} and Zhang, \{Shou Yin\} and Gu, \{Xue Mao\} and Zhang, \{Xiao Dong\} and Zhao, \{Yan Pin\} and Gong, \{Xian Zu\} and Kuang, \{Guang Li\} and Li, \{Cheng Fu\} and Luo, \{Jia Rong\} and Wang, \{Xiao Ming\} and Xiang Gao and Wan, \{Bao Nian\} and Xie, \{Ji Kang\} and Wan, \{Yuan Xi\}",

year = "2001",

doi = "10.1088/1009-0630/3/1/005",

language = "英语",

volume = "3",

pages = "621--627",

journal = "Plasma Science and Technology",

issn = "1009-0630",

publisher = "IOP Publishing Ltd.",

number = "1",

}

TY - JOUR

T1 - Removal of particles by ICRF cleaning in HT-7 superconducting tokamak

AU - Hu, Jian Sheng

AU - Li, Jian Gang

AU - Zhang, Shou Yin

AU - Gu, Xue Mao

AU - Zhang, Xiao Dong

AU - Zhao, Yan Pin

AU - Gong, Xian Zu

AU - Kuang, Guang Li

AU - Li, Cheng Fu

AU - Luo, Jia Rong

AU - Wang, Xiao Ming

AU - Gao, Xiang

AU - Wan, Bao Nian

AU - Xie, Ji Kang

AU - Wan, Yuan Xi

PY - 2001

Y1 - 2001

N2 - The ICRF (Ion Cyclotron Range Frequency) cleaning technique has been used as a routine wall cleaning method in the HT-7 superconducting tokamak. In a wide range of toroidal field, the removal rate of residual gas by ICRF cleaning was about twenty times higher than that of glow discharge cleaning (GDC). At different gas pressure and RF power levels, the ICRF cleaning is studied carefully. A good impurity cleaning effect and a very high hydrogen removal rate were obtained. The removal rate of hydrogen by 5 kW ICRF cleaning achieved was 1.6 × 10-5 Torr.l/s. And the relationships among pressure P, outgassing rate Q, atomic layers L absorbed on surface and the cleaning mode were discussed briefly.

AB - The ICRF (Ion Cyclotron Range Frequency) cleaning technique has been used as a routine wall cleaning method in the HT-7 superconducting tokamak. In a wide range of toroidal field, the removal rate of residual gas by ICRF cleaning was about twenty times higher than that of glow discharge cleaning (GDC). At different gas pressure and RF power levels, the ICRF cleaning is studied carefully. A good impurity cleaning effect and a very high hydrogen removal rate were obtained. The removal rate of hydrogen by 5 kW ICRF cleaning achieved was 1.6 × 10-5 Torr.l/s. And the relationships among pressure P, outgassing rate Q, atomic layers L absorbed on surface and the cleaning mode were discussed briefly.

UR - https://www.scopus.com/pages/publications/22944436085

U2 - 10.1088/1009-0630/3/1/005

DO - 10.1088/1009-0630/3/1/005

M3 - 文章

AN - SCOPUS:22944436085

SN - 1009-0630

VL - 3

SP - 621

EP - 627

JO - Plasma Science and Technology

JF - Plasma Science and Technology

IS - 1

ER -

Removal of particles by ICRF cleaning in HT-7 superconducting tokamak

Abstract

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