ENSA joins ILL in the tribute to Hannu Muttka, who passed away earlier this year. Among the many scientific adventures he participated in and responsibilities he took upon himself, Hannu Muttka acted as the ENSA chair from October 2004 to October 2006. He shall be greatly missed. https://www.ill.eu/news-press-events/news/detail/in-memory-of-hannu-mutka