Ultrashort-pulse laser system for nanostructuring the inner copper surface of up to 15 m long vacuum tubes

Elena Bez; Marcel Himmerlich; Ana Karen Reascos Portilla; Stefan Wackerow; Robin Uren; Amin Abdolvand; Mauro Taborelli; Paolo Chiggiato

doi:10.1117/12.2647110

17 March 2023 Ultrashort-pulse laser system for nanostructuring the inner copper surface of up to 15 m long vacuum tubes

Elena Bez, Marcel Himmerlich, Ana Karen Reascos Portilla, Stefan Wackerow, Robin Uren, Amin Abdolvand, Mauro Taborelli, Paolo Chiggiato

Author Affiliations +

Proceedings Volume 12409, Laser-based Micro- and Nanoprocessing XVII; 124090C (2023) https://doi.org/10.1117/12.2647110
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

Laser-processing the inner surfaces of 15 m long vacuum pipes installed in the LHC aims to create a nanostructured functional surface with low Secondary Electron Yield (SEY). The experimental system to treat the vacuum pipes in-situ, including a 532 nm picosecond-laser, a 15 m long optical fiber, and an inchworm robot, will be presented. The laser-induced generation of micro- and nanostructures reduces the SEY of the surface. To optimize the surface treatment, the processing parameters were varied, and different scanning patterns applied. The variation in ablation depth, surface topography and composition correlate well with changes of the SEY.

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Elena Bez, Marcel Himmerlich, Ana Karen Reascos Portilla, Stefan Wackerow, Robin Uren, Amin Abdolvand, Mauro Taborelli, and Paolo Chiggiato "Ultrashort-pulse laser system for nanostructuring the inner copper surface of up to 15 m long vacuum tubes", Proc. SPIE 12409, Laser-based Micro- and Nanoprocessing XVII, 124090C (17 March 2023); https://doi.org/10.1117/12.2647110

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