Li, Y., Henkel, M., Liang, Y., Knieps, A., Drews, P., Killer, C., Nicolai, D., Cosfeld, J., Geiger, J., Feng, Y., Effenberg, F., Höschen, D., Satheeswaran, G., Liu, S., Grulke, O., Jakubowski, M., Brezinsek, S., Otte, M., Neubauer, O., Schweer, B., Xu, G. S., Cai, J., Huang, Z., & W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society (2019). Measurement of edge ion temperature in W7-X with island divertor by retarding field analyzer. Poster presented at 46th EPS Conference on Plasma Physics, Milan.