TY  - JOUR
AU  - Jaspers, R.
AU  - Lopes Cardozo, N. J.
AU  - Donne, A. J. H.
AU  - Widdershoven, H. L. M.
AU  - Finken, K. H.
TI  - A synchrotron radiation diagnostic to observe relativistic runaway electrons in a tokamak plasma
JO  - Review of scientific instruments
VL  - 72
SN  - 0034-6748
CY  - [S.l.]
PB  - American Institute of Physics
M1  - PreJuSER-45674
SP  - 466 - 470
PY  - 2001
N1  - Record converted from VDB: 12.11.2012
AB  - In present day tokamaks runaway electrons can be confined long enough to gain energies in the order of several tens of megaelectron volts. At these energies synchrotron radiation is emitted in the infrared wavelength range which can easily be detected by thermographic cameras. The spectral features of this synchrotron radiation are reviewed. On TEXTOR-94 a diagnostic exploiting this synchrotron radiation has been developed and is presented here. It is shown how to deduce the runaway parameters like runaway energy, pitch angle, runaway current and beam radius from the measurements. Based on the experience at TEXTOR-94 the feasibility of a similar synchrotron diagnostic on the International Thermonuclear Experimental Reactor is discussed. The maximum emission is expected in the wavelength range from 1-5 mum. A beam of 10 MeV runaway electrons with a current of about 15 kA will already be detectable. (C) 2001 American Institute of Physics.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000166141600046
DO  - DOI:10.1063/1.1318245
UR  - https://juser.fz-juelich.de/record/45674
ER  -