Samenvatting
The Charge Exchange Recombination Spectroscopy (CXRS) diagnostic has become a routine diagnostic on almost all major high temperature fusion experimental devices. For the optimized stellarator Wendelstein 7-X (W7-X), a highly flexible and extensive CXRS diagnostic has been built to provide high-resolution local measurements of several important plasma parameters using the recently commissioned neutral beam heating. This paper outlines the design specifics of the W7-X CXRS system and gives examples of the initial results obtained, including typical ion temperature profiles for several common heating scenarios, toroidal flow and radial electric field derived from velocity measurements, beam attenuation via beam emission spectra, and normalized impurity density profiles under some typical plasma conditions.
| Originele taal-2 | Engels |
|---|---|
| Artikelnummer | 023507 |
| Aantal pagina's | 11 |
| Tijdschrift | Review of Scientific Instruments |
| Volume | 91 |
| Nummer van het tijdschrift | 2 |
| DOI's | |
| Status | Gepubliceerd - 1 feb. 2020 |
Financiering
The authors would like to thank Eindhoven University, Forschungszentrum Jülich, and the Netherlands Organisation for Applied Scientific Research (TNO) for the loan of the ITER-like spectrometer. This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom Research and Training Programme 2014–2018 and 2019– 2020 under Grant Agreement No. 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission.