| Item type |
学術雑誌論文 / Journal Article_02(1) |
| 公開日 |
2012-07-23 |
| タイトル |
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|
タイトル |
Improved Data Acquisition Methods for Uninterrupted Signal Monitoring and Ultra-Fast Plasma Diagnostics in LHD |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
real-time data acquisition (RT-DAQ) |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
variable subshot |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
environmental radiation monitoring |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
device soundness |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
LABCOM system |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
NAKANISHI, Hideya
IMAZU, Setsuo
OHSUNA, Masaki
KOJIMA, Mamoru
NONOMURA, Miki
SHOJI, Mamoru
EMOTO, Masahiko
YOSHIDA, Masanobu
IWATA, Chie
MIYAKE, Hitoshi
NAGAYAMA, Yoshio
KAWAHATA, Kazuo
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
To deal with endless data streams acquired in LHD steady-state experiments, the LHD data acquisition system was designed with a simple concept that divides a long pulse into a consecutive series of 10-s “subshots”. Latest digitizers applying high-speed PCI-Express technology, however, output nonstop gigabyte per second data streams whose subshot intervals would be extremely long if 10-s rule was applied. These digitizers need shorter subshot intervals, less than 10-s long. In contrast, steady-state fusion plants need uninterrupted monitoring of the environment and device soundness. They adopt longer subshot lengths of either 10 min or 1 day. To cope with both uninterrupted monitoring and ultra-fast diagnostics, the ability to vary the subshot length according to the type of operation is required. In this study, a design modification that enables variable subshot lengths was implemented and its practical effectiveness in LHD was verified. |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
? 2012 The Japan Society of Plasma Science and Nuclear Fusion Research |
| 書誌情報 |
en : Plasma and Fusion Research
巻 Vol. 7,
p. 2405007-1 - 2405007-4,
発行日 2012-02-01
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| 出版者 |
|
|
出版者 |
プラズマ・核融合学会 |
| DOI |
|
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1585/pfr.7.2405007 |
pfr2012_07-2405007.pdf (2.6 MB)
