Inference of $\alpha$-particle density profiles from ITER collective Thomson scattering

Autor: Rasmussen, Jesper, Stejner, Morten, Jensen, Thomas, Klinkby, Esben B., Korsholm, Søren B., Larsen, Alex W., Leipold, Frank, Nielsen, Stefan K., Salewski, M.

The primary purpose of the collective Thomson scattering (CTS) diagnostic at ITER is to measure the properties of fast-ion populations, in particular those of fusion-born $\alpha$-particles. Based on the present design of the diagnostic, we compute a

Externí odkaz: http://arxiv.org/abs/1907.02756

Measurement of a 2D fast-ion velocity distribution function by tomographic inversion of fast-ion D-alpha spectra

Autor: Salewski, Mirko, Geiger, Benedikt, Jacobsen, Asger Schou, Garcıa-Munoz, Manuel, Heidbrink, Bill, Korsholm, Soren Bang, Leipold, Frank, Madsen, Jens, Moseev, Dmitry, Nielsen, Stefan Kragh, Rasmussen, Jesper, Stejner, Morten, Tardini, Giovanni, Weiland, Markus, team, the ASDEX Upgrade

Publikováno v: Nuclear Fusion, vol: 54, issue: 2, pages: 023005, 2014

We present the first measurement of a local fast-ion 2D velocity distribution function $f(v_\parallel, v_\perp)$. To this end, we heated a plasma in ASDEX Upgrade by neutral beam injection and measured spectra of fast-ion D-alpha (FIDA) light from th

Externí odkaz: http://arxiv.org/abs/1509.08482

Plasma cleaning of ITER first mirrors in magnetic field

Autor: Moser, Lucas, Steiner, Roland, Leipold, Frank, Reichle, Roger, Marot, Laurent, Meyer, Ernst

To avoid reflectivity losses in ITER optical diagnostic systems, plasma sputtering of metallic First Mirrors is foreseen in order to remove deposits coming from the main wall (mainly beryllium and tungsten). Therefore plasma cleaning has to work on l

Externí odkaz: http://arxiv.org/abs/1411.6659

Pretreatment of the macroalgae Chaetomorpha linum for the production of bioethanol – Comparison of five pretreatment technologies

Autor: Schultz-Jensen, Nadja, Thygesen, Anders, Leipold, Frank, Thomsen, Sune Tjalfe, Roslander, Christian, Lilholt, Hans, Bjerre, Anne Belinda

Publikováno v: In Bioresource Technology July 2013 140:36-42

Optics for electron cyclotron resonance heating and collective Thomson scattering at the stellarator W7-X

Autor: Kasparek, W., Erckmann, V., Laqua, H. P., Stange, T., Weissgerber, M., Lechte, C., Plaum, B., Moseev, D., Leipold, Frank, Petelin, M., Brunner, K. J., Braune, H., Marsen, S., Schneider, N., Wolf, R. C., Team, W7-X

Publikováno v: Kasparek, W, Erckmann, V, Laqua, H P, Stange, T, Weissgerber, M, Lechte, C, Plaum, B, Moseev, D, Leipold, F, Petelin, M, Brunner, K J, Braune, H, Marsen, S, Schneider, N, Wolf, R C & Team, W-X 2017, ' Optics for electron cyclotron resonance heating and collective Thomson scattering at the stellarator W7-X ', E P J Web of Conferences, vol. 149, 01013 . https://doi.org/10.1051/epjconf/201714901013

This paper will provide a brief review on the optical transmission system, describe its performance and first experiences, and will concentrate on new developments like in-vessel grating reflectors, Remote-steering (RS) antennas used as launchers and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______1202::cf131093a25bb2ef3af39c33c91f7ac3
https://orbit.dtu.dk/en/publications/d0c9612b-915f-4cba-9f21-6f05a7370590