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TY - CONF AU - Sitko, M. AU - Abdolvand, A. AU - Baglin, V. AU - Bajek, D. AU - Calatroni, S. AU - Chiggiato, P. AU - Colling, M. AU - Di Girolamo, B. AU - Garcia-Tabares Valdivieso, E. AU - Jones, T.J. AU - McIntosh, P.A. AU - Taborelli, M. AU - Wackerow, S. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Towards Implementation of Laser Engineered Surface Structures for Electron Cloud Mitigation J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - The LHC operation has proven that the electron cloud could be a significant limiting factor in machine performance, in particular for future High Luminosity LHC (HL-LHC) beams. Electron clouds, generated by electron multipacting in the beam pipes, leads to beam instabilities and beam-induced heat load in cryogenic systems. Laser Engineered Surface Structures (LESS) is a novel surface treatment which changes the morphology of the internal surfaces of vacuum chambers. The surface modification results in a reduced secondary electron yield (SEY) and, consequently, in the eradication of the electron multipacting. Low SEY values of the treated surfaces and flexibility in choosing the laser parameters make LESS a promising treatment for future accelerators. LESS can be applied both in new and existing accelerators owing to the possibility of automated in-situ treatment. This approach has been developed and optimised for the LHC beam screens in which the electron cloud has to be mitigated before the HL-LHC upgrade. We will present the latest steps towards the implementation of LESS. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1220 EP - 1223 KW - electron KW - laser KW - vacuum KW - operation KW - multipactoring DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-TUZGBE3 UR - http://jacow.org/ipac2018/papers/tuzgbe3.pdf ER -