Speaker
Birgitte Madsen
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/P1.1111.pdf
Velocity-space tomography from synthetic FIDA measurements at EAST
B. Madsen1 , M. Salewski1 , J. Huang2 , J. Zhang2,3 , C. Wu3 , J. Chang2 , S. Ding2 ,
W. Gao2 and the EAST team
1 Department of Physics, Technical University of Denmark, Kgs. Lyngby, Denmark
2 Institute of Plasma Physics, Chinese Academy of Sciences, P.O. 1126, 230031 Hefei, Anhui,
China
3 School of Nuclear Science and Technology, University of Science and Technology of China,
Hefei, Anhui 230026, China
In the Experimental Advanced Superconducting Tokamak (EAST), a vertically viewing and
a tangentially viewing fast-ion D-alpha (FIDA) diagnostics have been installed in order to in-
vestigate fast-ion dynamics [1, 2, 3]. This is done by measuring the Doppler-shifted D-alpha
light arising due to charge exchange between a neutral beam and the fast ions. By combining
measurements from both FIDA instruments, the fast-ion velocity distribution can be obtained
by velocity-space tomography [4]. To explore the possibilities and limitations of velocity-space
tomography in studying the fast-ion distribution in EAST, we present the reconstruction of the
fast-ion velocity distribution from synthetic FIDA measurements using EAST MHD-quiescent
conditions including both a counter- and a co-current neutral beam injectors with beam energies
of 55 keV and 47 keV, respectively.
Acknowledgements
Work at the Institute of Plasma Physics, Chinese Academy of Sciences, was supported by
the National Natural Science Foundation of China 11575249 , National Magnetic Confinement
Fusion Energy Research Program of China under Contract Nos. 2015GB110005, and Hefei
Science Center CAS (2017HSC-IU005).
References
[1] J. Huang et al., Rev. Sci. Instrum. 85, 11E407 (2014)
[2] J. Huang et al., Rev. Sci. Instrum. 87, 11E542 (2016)
[3] Y. Hou et al., Rev. Sci. Instrum. 87, 11E552 (2016)
[4] M. Salewski et al., Nucl. Fusion 56, 106024 (2016)
