Marcel Himmerlich

European Organization for Nuclear Research

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About

Marcel Himmerlich is a leading figure in the field of surface science and vacuum technology, with a particular focus on the mitigation of electron cloud effects in particle accelerators. His key research areas include laser-induced surface structuring, secondary electron yield (SEY) reduction, and the development of advanced surface treatments for accelerator components. Himmerlich’s most notable contribution is his pioneering work on using picosecond pulsed 532 nm laser systems to roughen the inner surfaces of long vacuum tubes—up to 15 meters in length—dramatically suppressing electron multipacting. This technique, detailed in his 2023 paper (3 citations), scatters electrons within the rough surface structure, achieving a low SEY that is critical for maintaining beam stability in high-energy accelerators. His research has direct implications for the performance of facilities like CERN’s Large Hadron Collider, where electron clouds can degrade beam quality. Himmerlich’s innovative approach to surface engineering represents a significant advancement in vacuum technology, offering a practical, scalable solution for one of the most persistent challenges in accelerator physics. His work continues to influence the design of next-generation particle accelerators and vacuum systems.