Claim: Horst Wenninger  (1938 - 16 July 2020) was a German physicist who retired from European Organization for Nuclear Research (CERN) in September 2003 and took active part in the TESLA collaboration in his last years.
Evidence: Horst Wenninger passed away on 16 July 2020. Horst Artur Wenninger (1938 - 2020) was a German physicist who spent most of his career at CERN. Wenninger spent 35 years at the European Organization for Nuclear Research (CERN) starting as a participant to the Bubble Chamber experiments in the 1960s, a period of time that he was also assisting work at the Institute of High Energy Physics of the University of Heidelberg. He retired from CERN in September 2003. During his last years of career he also took active part in the TESLA collaboration, which was merged into the International Linear Collider project.