Henkel, M., Lia, Y., Liang, Y., Drews, P., Knieps, A., Killer, C., Nicolai, D., Höschen, D., Geiger, J., Xiao, C., Sandri,
N., Satheeswaran, G., Liu, S., Grulke, O., Jakubowski, M., Brezinsek, S., Otte, M., Neubauer, O., Schweer, B., Xu, G., Cai,
J., & W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society (2020).
Retarding field analyzer for the wendelstein 7-X boundary plasma. Fusion Engineering and Design,
157:. doi:10.1016/j.fusengdes.2020.111623.
