papers
Publications (3)
physics.optics2020
Mid-infrared monocrystalline interference coatings with excess optical loss below 10 ppm
G. Winkler, L. W. Perner, G. -W. Truong +13
We present high-reflectivity substrate-transferred single-crystal GaAs/AlGaAs interference coatings at a center wavelength of 4.54 um with record-low excess optical loss below 10 p…
physics.plasm-ph2019
Validating the ASCOT modelling of NBI fast ions in Wendelstein 7-X stellarator
S. Ãkäslompolo, P. Drewelow, Y. Gao +37
The first fast ion experiments in Wendelstein 7-X were performed in 2018. They are one of the first steps in demonstrating the optimised fast ion confinement of the stellarator. Th…
physics.plasm-ph2019
Validating fast-ion wall-load IR analysis-methods against W7-X NBI empty-torus experiment
S. Ãkäslompolo, P. Drewelow, Y. Gao +17
The first neutral beam injection (NBI) experiments in Wendelstein 7-X (W7-X) stellarator were conducted in the summer of 2018. The NBI system is used to heat the magnetically confi…