TY - RPRT TI - Beam focusing and consequences for Doppler backscattering measurements AU - Ruiz Ruiz, J. [University of Oxford (United Kingdom)] (ORCID:0000000342585273) AU - Parra, F. I. [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)] (ORCID:0000000196217404) AU - Hall-Chen, V. H. [Agency for Science, Technology and Research (A*STAR) (Singapore)] (ORCID:0000000160093649) AU - Belrhali, N. [Ecole Normale Supérieure (ENS), Paris (France)] AU - Giroud, C. [Culham Science Centre, Abingdon (United Kingdom). Culham Centre for Fusion Energy (CCFE), EURATOM/UKAEA Fusion Association] AU - Hillesheim, J. C. [Commonwealth Fusion Systems, Cambridge, MA (United States)] (ORCID:0009000959113417) AU - Lopez, N. A. [University of Oxford (United Kingdom)] (ORCID:0000000155663731) PY - 2025 DO - 10.1017/s0022377825000170 UR - https://www.osti.gov/biblio/2564376 ID - 2564376 ER -