• Title/Summary/Keyword: KAERI

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Evaluation of Remote Handling Performance with the Polarized Stereo Monitoring System (편광방식 스테레오 모니터링 시스템의 원격조작성 평가)

  • Lee, Yong-Bum;Lee, Nam-Ho;Park, Soon-Yong;Lee, Jong-Min;Jin, Sung-Il
    • Journal of Sensor Science and Technology
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    • v.5 no.5
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    • pp.55-62
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    • 1996

  • This paper describes development of Polarized Stereo Monitoring System (KAERI-PSM) and compares the remote handling performance of KAERI-PSM with that of other monitoring systems, electric shutter type stereo monitoring system and general TV monitoring system. Remote handling performance is evaluated by total time and error number on remote operating experiments. Four kinds of remote handling experiments are carried out through 1) directly 2) general TV 3) electric shutter type monitor, and 4) KAERI-PSM. In these experiments six employees are participated and PUMA robot with force-torque reflectional joystic is used. The result of experiments show that camera angle against object is significant factor in monitoring and stereo monitoring system give more performance benifits in terms of accuracy and speed of remote handling operation than general TV monitoring system. In comparision of the polarized and electric shutter type stereo monitoring system, both have similar accuracy and speed for remote handling operation, but the former is superior in image quality and stability of the performance.

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Development of Large-Area RF Ion Source for Neutral Beam Injector in Fusion Devices

  • Chang, Doo-Hee;Jeong, Seung Ho;Kim, Tae-Seong;Park, Min;Lee, Kwang Won;In, Sang Ryul
    • Proceedings of the Korean Vacuum Society Conference
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    • 2013.08a
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    • pp.179.2-179.2
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    • 2013

  • A large-area RF-driven ion source is being developed at Germany for the heating and current drive of ITER device. Negative hydrogen ion sources are major components of neutral beam injection (NBI) systems in future large-scale fusion experiments such as ITER and DEMO. The RF sources for the production of positive hydrogen ions have been successfully developed at IPP (Max-Planck-Institute for Plasma Physics), Garching, for the ASDEX-U and W7-AS neutral beam heating systems. Ion sources of the first NBI system (NBI-1) for the KSTAR tokamak have been developed successfully with a bucket plasma generator based on the filament arc discharge, which have contributed to achieve a good plasma performance such as 15 sec H-mode operation with an injection of 3.5 MW NB power. There is a development plan of RF ion source at the KAERI to extract the positive ions, which can be used for the second NBI system (NBI-2) of the KSTAR and to extract the negative ions for future fusion devices such as Fusion Neutron Source and Korea-DEMO. The development progresses of RF ion source at the KAERI are described in this presentation.

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Different Physiological Response to Salt in Salt Tolerant Rice Mutants Induced by Gamma-Mutagenesis

  • Jang, Duk-Soo;Song, Mira;Kim, Sun-hee;Kim, Jin-Baek;Kim, Sang Hoon;Ha, Bo-Keun;Kang, Si-Yong;Kim, Wook;Kim, Dong Sub
    • Journal of Radiation Industry
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    • v.5 no.3
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    • pp.259-266
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    • 2011

  • When plants undergo stress, Reactive oxygen species (ROS) which remove bad elements such as mildew and virus is activated in plant body. However, if ROS is excessively increased, plant will be harmed itself by destruction of cell and signal system and phenomenon of lipid peroxidation. In order to identify content of lipid peroxidation and activity of some enzymes scavenging ROS, phenotypical and physiological analysis was performed with two mutant lines, Till-II-877 and Till-II-894, comparing with cv. Dongan (WT). In phenotype analysis, two mutant lines give to well-conditioned growth better than WT in since 5 days after salt treatment. In enzyme activities, there was a modest difference in the content of catalase (CAT) and peroxidase (POD) between Till-II-877 and Till-II-894, two mutant lines showed high levels in CAT contents than WT. However, they express low levels in POD contents. In MDA analysis, the content of Till-II-877 was higher than that of WT, but Till-II-894 was lower. This result indicates that two mutants have different mechanism against salt stress.