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- Publications
- Influence
Spectroscopic imaging of limiter heat and particle fluxes and the resulting impurity sources during Wendelstein 7-X startup plasmas.
- L. Stephey, G. Wurden, +8 authors E. Unterberg
- Physics, Medicine
- The Review of scientific instruments
- 14 November 2016
A combined IR and visible camera system [G. A. Wurden et al., "A high resolution IR/visible imaging system for the W7-X limiter," Rev. Sci. Instrum. (these proceedings)] and a filterscope system [R.… Expand
Status of electron temperature and density measurement with beam emission spectroscopy on thermal helium at TEXTOR
- O. Schmitz, I. Beigman, +10 authors T. Team
- Materials Science
- 24 September 2008
Beam emission spectroscopy on thermal helium is used at the TEXTOR tokamak as a reliable method to obtain radial profiles of electron temperature T-e(r, t) and electron density ne(r, t). In this… Expand
Overview of diagnostic performance and results for the first operation phase in Wendelstein 7-X (invited).
- M. Krychowiak, A. Adnan, +99 authors S. Zoletnik
- Physics, Medicine
- The Review of scientific instruments
- 11 November 2016
Wendelstein 7-X, a superconducting optimized stellarator built in Greifswald/Germany, started its first plasmas with the last closed flux surface (LCFS) defined by 5 uncooled graphite limiters in… Expand
Numerical investigation of plasma edge transport and limiter heat fluxes in Wendelstein 7-X startup plasmas with EMC3-EIRENE
- F. Effenberg, Y. Feng, +9 authors W. Team
- Materials Science
- 20 January 2017
The results of a first systematic assessment of plasma edge transport processes for the limiter startup configuration at Wendelstein 7-X are presented. This includes an investigation of transport… Expand
Bayesian modelling of a thermal helium beam for measurement of electron density and temperature in the W7-X divertor plasma
- M. Krychowiak, M. Brix, +5 authors R. Wolf
- Materials Science
- 1 March 2011
In Greifswald/Germany W7-X, a new stellarator-type fusion plasma experiment, is currently being built. For the investigation of the divertor plasma two thermal helium beams are foreseen. This… Expand
Feasibility of line-ratio spectroscopy on helium and neon as edge diagnostic tool for Wendelstein 7-X.
- T. Barbui, M. Krychowiak, +4 authors A. Terra
- Materials Science, Medicine
- The Review of scientific instruments
- 11 November 2016
A beam emission spectroscopy system on thermal helium (He) and neon (Ne) has been set up at Wendelstein 7-X to measure edge electron temperature and density profiles utilizing the line-ratio… Expand
Bayesian analysis of the effective charge from spectroscopic bremsstrahlung measurement in fusion plasmas
- M. Krychowiak, R. Koenig, T. Klinger, R. Fischer
- Physics
- 28 October 2004
At the stellarator Wendelstein 7-AS (W7-AS) a spectrally resolving two channel system for the measurement of line-of-sight averaged Zeff values has been tested in preparation for its planned… Expand
Synthetic plasma edge diagnostics for EMC3-EIRENE, highlighted for Wendelstein 7-X.
- H. Frerichs, F. Effenberg, +10 authors G. Wurden
- Physics, Medicine
- The Review of scientific instruments
- 14 November 2016
Interpretation of spectroscopic measurements in the edge region of high-temperature plasmas can be a challenge since line of sight integration effects make direct interpretation in terms of… Expand
Diagnostics development for quasi-steady-state operation of the Wendelstein 7-X stellarator (invited).
- R. König, J. Baldzuhn, +25 authors S. Zoletnik
- Physics, Medicine
- The Review of scientific instruments
- 6 September 2012
The critical issues in the development of diagnostics, which need to work robust and reliable under quasi-steady state conditions for the discharge durations of 30 min and which cannot be maintained… Expand