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Observation of runaway electrons in the first EAST ohmic discharge

Published online by Cambridge University Press:  01 August 2008

H. W. LU ,
L. Q. HU ,
Z. Y. CHEN ,
Y. JANG ,
S. Y. LIN  and
EAST TEAM
H. W. LU
Affiliation:
Institute of Plasma Physics, China Academy of Sciences, Hefei 230030, People's Republic of China (luhw@ipp.ac.cn)
L. Q. HU
Affiliation:
Institute of Plasma Physics, China Academy of Sciences, Hefei 230030, People's Republic of China (luhw@ipp.ac.cn)
Z. Y. CHEN
Affiliation:
Institute of Plasma Physics, China Academy of Sciences, Hefei 230030, People's Republic of China (luhw@ipp.ac.cn)
Y. JANG
Affiliation:
Institute of Plasma Physics, China Academy of Sciences, Hefei 230030, People's Republic of China (luhw@ipp.ac.cn)
S. Y. LIN
Affiliation:
Institute of Plasma Physics, China Academy of Sciences, Hefei 230030, People's Republic of China (luhw@ipp.ac.cn)
EAST TEAM
Affiliation:
Institute of Plasma Physics, China Academy of Sciences, Hefei 230030, People's Republic of China (luhw@ipp.ac.cn)
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Abstract

Plasma was first obtained successfully on the EAST Tokamak in the autumn of 2006. This was an ohmically heated plasma with rf-assisted pre-ionization for plasma startup. Many diagnostics systems were set up to satisfy the requirement for the description of basic plasma performance. Three hard X-ray detectors have been installed to monitor the runaway electrons with a tangential view into the plasma on the equatorial plane. A BGO (Bi4Ge3O12) scintillator installed in the forward direction was used to detect the hard X-ray emission in the energy range 0.5–7 MeV while two CdTe detectors in the backward and forward directions are used to detect the hard X-ray emission in the energy range 0.3-1.2 MeV. Phenomena observed with these detectors in different discharge conditions are presented here.

Type
Papers
Information
Journal of Plasma Physics , Volume 74 , Issue 4 , August 2008 , pp. 445 - 453
Copyright
Copyright © Cambridge University Press 2007

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