[Zurück]

G. Birkenmeier, J. Galdon-Quiroga, V. Olevskaia, M. Dunne, J. Rivero-Rodriguez, M. Garcia-Munoz, M. Griener, G. Harrer, N. Leuthold, E. Wolfrum, . ASDEX Upgrade Team:
"Requirements for an Imaging Heavy Ion Beam Probe at ASDEX Upgrade";
in: "Proceedings 45st EPS Conference on Plasma Physics, ISBN: 979-10-96389-08-7, Prague, Czech Republic, 2 - 6 July, 2018, Europhys. Conf. Abstracts 42A", Proceedings 45st EPS Conference on Plasma Physics, 2018, ISBN: 979-10-96389-08-7, S. P4.10201 - P4.10204.

Heavy ion beam probes (HIBPs) [1] feature the possibility to measure the electrostatic potential,
electron density and magnetic field fluctuations in the confinement region of magnetically
confined high-temperature plasmas. HIBPs are the only diagnostics to directly measure the
particle transport G µ jf^~jjn^~j sinanf of modes due to its unique property of measuring the crossphase
anf between density and potential fluctuations, n^~ and f^~, respectively, at the same volume
element with high time resolution [2].
In order to avoid the difficult integration of a classical HIBP setup with an energy analyzer
outside the main vacuum vessel into the developed experimental setup of the tokamak ASDEX
Upgrade (AUG), an alternative approach of a HIBP with a much more compact detector solution
and a neutral heavy atom beam as primary beam is envisaged. The technological feasibility of
this new approach has been investigated numerically and in laboratory tests as described in the
following.