Towards the implementation of laser engineered surface structures for electron cloud mitigation

M. Sitko (Lead / Corresponding author), V. Baglin, Sergio Calatroni, Paolo Chiggiato, B. Di Girolamo, Elisa Garcia-Tabares Valdivieso, Mauro Taborelli, Amin Abdolvand, David Bajek, Stefan Wackerow, M. Colling, T. J. Jones, P. A. McIntosh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

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 (HLLHC) beams. Electron clouds, generated by electron multipacting in the beam pipes, lead to 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 reduction or eradication of the electron multipacting effects. 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 insitu treatment. This approach has been developed and optimised for selected 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.
Original languageEnglish
Title of host publicationIPAC 2018
Subtitle of host publicationProceedings of the 9th International Particle Accelerator Conference
EditorsShane Koscielniak, Todd Satogata, Volker R. W. Schaa, Jana Thomson
Place of PublicationGeneva
PublisherJACoW
Pages1220-1223
Number of pages4
ISBN (Electronic)9783954501847
DOIs
Publication statusPublished - Jun 2018
Event9th International Particle Accelerator Conference - Vancouver, Canada
Duration: 29 Apr 20184 May 2018
https://ipac18.org/

Conference

Conference9th International Particle Accelerator Conference
CountryCanada
CityVancouver
Period29/04/184/05/18
Internet address

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electron clouds
lasers
accelerators
electrons
vacuum chambers
surface treatment
cryogenics
flexibility
luminosity
heat

Cite this

Sitko, M., Baglin, V., Calatroni, S., Chiggiato, P., Di Girolamo, B., Garcia-Tabares Valdivieso, E., ... McIntosh, P. A. (2018). Towards the implementation of laser engineered surface structures for electron cloud mitigation. In S. Koscielniak, T. Satogata, V. R. W. Schaa, & J. Thomson (Eds.), IPAC 2018: Proceedings of the 9th International Particle Accelerator Conference (pp. 1220-1223). [TUZGBE3] Geneva: JACoW. https://doi.org/10.18429/JACoW-IPAC2018-TUZGBE3
Sitko, M. ; Baglin, V. ; Calatroni, Sergio ; Chiggiato, Paolo ; Di Girolamo, B. ; Garcia-Tabares Valdivieso, Elisa ; Taborelli, Mauro ; Abdolvand, Amin ; Bajek, David ; Wackerow, Stefan ; Colling, M. ; Jones, T. J. ; McIntosh, P. A. / Towards the implementation of laser engineered surface structures for electron cloud mitigation. IPAC 2018: Proceedings of the 9th International Particle Accelerator Conference. editor / Shane Koscielniak ; Todd Satogata ; Volker R. W. Schaa ; Jana Thomson. Geneva : JACoW, 2018. pp. 1220-1223
@inproceedings{c5fddecb623f432b87e695157711cb07,
title = "Towards the implementation of laser engineered surface structures for electron cloud mitigation",
abstract = "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 (HLLHC) beams. Electron clouds, generated by electron multipacting in the beam pipes, lead to 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 reduction or eradication of the electron multipacting effects. 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 insitu treatment. This approach has been developed and optimised for selected 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.",
author = "M. Sitko and V. Baglin and Sergio Calatroni and Paolo Chiggiato and {Di Girolamo}, B. and {Garcia-Tabares Valdivieso}, Elisa and Mauro Taborelli and Amin Abdolvand and David Bajek and Stefan Wackerow and M. Colling and Jones, {T. J.} and McIntosh, {P. A.}",
note = "The LESS project is carried out under the aegis of grant and financial support from the STFC (Grant No. ST/P00086X/1) and CERN Collaboration Agreement (KN3362) between CERN, STFC-ASTeC Daresbury laboratory and the University of Dundee.",
year = "2018",
month = "6",
doi = "10.18429/JACoW-IPAC2018-TUZGBE3",
language = "English",
pages = "1220--1223",
editor = "Shane Koscielniak and Todd Satogata and Schaa, {Volker R. W.} and Jana Thomson",
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}

Sitko, M, Baglin, V, Calatroni, S, Chiggiato, P, Di Girolamo, B, Garcia-Tabares Valdivieso, E, Taborelli, M, Abdolvand, A, Bajek, D, Wackerow, S, Colling, M, Jones, TJ & McIntosh, PA 2018, Towards the implementation of laser engineered surface structures for electron cloud mitigation. in S Koscielniak, T Satogata, VRW Schaa & J Thomson (eds), IPAC 2018: Proceedings of the 9th International Particle Accelerator Conference., TUZGBE3, JACoW, Geneva, pp. 1220-1223, 9th International Particle Accelerator Conference, Vancouver, Canada, 29/04/18. https://doi.org/10.18429/JACoW-IPAC2018-TUZGBE3

Towards the implementation of laser engineered surface structures for electron cloud mitigation. / Sitko, M. (Lead / Corresponding author); Baglin, V.; Calatroni, Sergio; Chiggiato, Paolo; Di Girolamo, B.; Garcia-Tabares Valdivieso, Elisa; Taborelli, Mauro; Abdolvand, Amin; Bajek, David; Wackerow, Stefan; Colling, M.; Jones, T. J.; McIntosh, P. A.

IPAC 2018: Proceedings of the 9th International Particle Accelerator Conference. ed. / Shane Koscielniak; Todd Satogata; Volker R. W. Schaa; Jana Thomson. Geneva : JACoW, 2018. p. 1220-1223 TUZGBE3.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Towards the implementation of laser engineered surface structures for electron cloud mitigation

AU - Sitko, M.

AU - Baglin, V.

AU - Calatroni, Sergio

AU - Chiggiato, Paolo

AU - Di Girolamo, B.

AU - Garcia-Tabares Valdivieso, Elisa

AU - Taborelli, Mauro

AU - Abdolvand, Amin

AU - Bajek, David

AU - Wackerow, Stefan

AU - Colling, M.

AU - Jones, T. J.

AU - McIntosh, P. A.

N1 - The LESS project is carried out under the aegis of grant and financial support from the STFC (Grant No. ST/P00086X/1) and CERN Collaboration Agreement (KN3362) between CERN, STFC-ASTeC Daresbury laboratory and the University of Dundee.

PY - 2018/6

Y1 - 2018/6

N2 - 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 (HLLHC) beams. Electron clouds, generated by electron multipacting in the beam pipes, lead to 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 reduction or eradication of the electron multipacting effects. 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 insitu treatment. This approach has been developed and optimised for selected 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.

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 (HLLHC) beams. Electron clouds, generated by electron multipacting in the beam pipes, lead to 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 reduction or eradication of the electron multipacting effects. 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 insitu treatment. This approach has been developed and optimised for selected 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.

U2 - 10.18429/JACoW-IPAC2018-TUZGBE3

DO - 10.18429/JACoW-IPAC2018-TUZGBE3

M3 - Conference contribution

SP - 1220

EP - 1223

BT - IPAC 2018

A2 - Koscielniak, Shane

A2 - Satogata, Todd

A2 - Schaa, Volker R. W.

A2 - Thomson, Jana

PB - JACoW

CY - Geneva

ER -

Sitko M, Baglin V, Calatroni S, Chiggiato P, Di Girolamo B, Garcia-Tabares Valdivieso E et al. Towards the implementation of laser engineered surface structures for electron cloud mitigation. In Koscielniak S, Satogata T, Schaa VRW, Thomson J, editors, IPAC 2018: Proceedings of the 9th International Particle Accelerator Conference. Geneva: JACoW. 2018. p. 1220-1223. TUZGBE3 https://doi.org/10.18429/JACoW-IPAC2018-TUZGBE3