Oxygen removal with D2-ICR cleanings after oxidation experiment in HT-7

J. S. Hu; J. G. Li; Y. P. Zhao

doi:10.1016/j.fusengdes.2006.08.001

Oxygen removal with D₂-ICR cleanings after oxidation experiment in HT-7

J. S. Hu
, J. G. Li
, Y. P. Zhao

School of Electrical Engineering

CAS - Institute of Plasma Physics

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

13 Scopus citations

Abstract

The effectiveness of D₂-ICR cleaning with a pressure up to 0.18 Pa was surveyed on hot walls of 400-470 K for oxygen removal after oxidation experiment in the HT-7 superconducting tokamak. The oxygen removal rate in D₂-ICR cleaning was about (7-9) × 10²¹ O-atoms/h, about 5-10 times higher that that He-ICR cleanings before and after the D₂-ICR cleaning. In about 130 min He-ICR and D₂-ICR cleanings, about 8 × 10²¹ O-atoms were removed. After the cleanup, a lot of water still retained in HT-7 vessel and 67 disruptive plasmas were required before obtaining normal plasma. In present experiment, the recovered plasmas were easily controlled and much better than previous report in HT-7 oxidation experiments.

Original language	English
Pages (from-to)	133-139
Number of pages	7
Journal	Fusion Engineering and Design
Volume	82
Issue number	2
DOIs	https://doi.org/10.1016/j.fusengdes.2006.08.001
State	Published - Feb 2007

Keywords

Deuterium
ICR
Oxygen removal

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10.1016/j.fusengdes.2006.08.001

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title = "Oxygen removal with D2-ICR cleanings after oxidation experiment in HT-7",

abstract = "The effectiveness of D2-ICR cleaning with a pressure up to 0.18 Pa was surveyed on hot walls of 400-470 K for oxygen removal after oxidation experiment in the HT-7 superconducting tokamak. The oxygen removal rate in D2-ICR cleaning was about (7-9) × 1021 O-atoms/h, about 5-10 times higher that that He-ICR cleanings before and after the D2-ICR cleaning. In about 130 min He-ICR and D2-ICR cleanings, about 8 × 1021 O-atoms were removed. After the cleanup, a lot of water still retained in HT-7 vessel and 67 disruptive plasmas were required before obtaining normal plasma. In present experiment, the recovered plasmas were easily controlled and much better than previous report in HT-7 oxidation experiments.",

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AU - Hu, J. S.

AU - Li, J. G.

AU - Zhao, Y. P.

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AB - The effectiveness of D2-ICR cleaning with a pressure up to 0.18 Pa was surveyed on hot walls of 400-470 K for oxygen removal after oxidation experiment in the HT-7 superconducting tokamak. The oxygen removal rate in D2-ICR cleaning was about (7-9) × 1021 O-atoms/h, about 5-10 times higher that that He-ICR cleanings before and after the D2-ICR cleaning. In about 130 min He-ICR and D2-ICR cleanings, about 8 × 1021 O-atoms were removed. After the cleanup, a lot of water still retained in HT-7 vessel and 67 disruptive plasmas were required before obtaining normal plasma. In present experiment, the recovered plasmas were easily controlled and much better than previous report in HT-7 oxidation experiments.

KW - Deuterium

KW - ICR

KW - Oxygen removal

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DO - 10.1016/j.fusengdes.2006.08.001

M3 - 文章

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VL - 82

SP - 133

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JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

IS - 2

ER -

Oxygen removal with D₂-ICR cleanings after oxidation experiment in HT-7

Abstract

Keywords

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