First Beam Test of Laser Engineered Surface Structures (LESS) at Cryogenic Temperature in CERN SPS Accelerator

R. Salemme (Lead / Corresponding author), V. Baglin, Sergio Calatroni, Paolo Chiggiato, B. Di Girolamo, Elisa Garcia-Tabares Valdivieso, B. Jenninger, L. Prever-Loiri, M. Sitko, Amin Abdolvand, Stefan Wackerow

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

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Abstract

Electron cloud mitigation is an essential requirement for accelerators of positive particles with high intensity beams to guarantee beam stability and limited heat load in cryogenic systems. Laser Engineered Surface Structures (LESS) are being considered, within the High Luminosity upgrade of the LHC collider at CERN (HL-LHC), as an option to reduce the Secondary Electron Yield (SEY) of the surfaces facing the beam, thus suppressing the electron cloud phenomenon. As part of this study, a 2.2 m long Beam Screen (BS) with LESS has been tested at cryogenic temperature in the COLD bore EXperiment (COLDEX) facility in the SPS accelerator at CERN. In this paper, we describe the manufacturing procedure of the beam screen, the employed laser treatment technique and discuss our first observations in COLDEX confirming electron cloud suppression.
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
Pages2616-2619
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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cryogenic temperature
accelerators
electron clouds
lasers
cavities
cryogenics
manufacturing
luminosity
retarding
heat
requirements
electrons

Cite this

Salemme, R., Baglin, V., Calatroni, S., Chiggiato, P., Di Girolamo, B., Garcia-Tabares Valdivieso, E., ... Wackerow, S. (2018). First Beam Test of Laser Engineered Surface Structures (LESS) at Cryogenic Temperature in CERN SPS Accelerator. In S. Koscielniak, T. Satogata, V. R. W. Schaa, & J. Thomson (Eds.), IPAC 2018: Proceedings of the 9th International Particle Accelerator Conference (pp. 2616-2619). [WEPMG005] Geneva: JACoW. https://doi.org/10.18429/JACoW-IPAC2018-WEPMG005
Salemme, R. ; Baglin, V. ; Calatroni, Sergio ; Chiggiato, Paolo ; Di Girolamo, B. ; Garcia-Tabares Valdivieso, Elisa ; Jenninger, B. ; Prever-Loiri, L. ; Sitko, M. ; Abdolvand, Amin ; Wackerow, Stefan. / First Beam Test of Laser Engineered Surface Structures (LESS) at Cryogenic Temperature in CERN SPS Accelerator. 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. 2616-2619
@inproceedings{88a76c9bdf8547c4b50a1182ba93c964,
title = "First Beam Test of Laser Engineered Surface Structures (LESS) at Cryogenic Temperature in CERN SPS Accelerator",
abstract = "Electron cloud mitigation is an essential requirement for accelerators of positive particles with high intensity beams to guarantee beam stability and limited heat load in cryogenic systems. Laser Engineered Surface Structures (LESS) are being considered, within the High Luminosity upgrade of the LHC collider at CERN (HL-LHC), as an option to reduce the Secondary Electron Yield (SEY) of the surfaces facing the beam, thus suppressing the electron cloud phenomenon. As part of this study, a 2.2 m long Beam Screen (BS) with LESS has been tested at cryogenic temperature in the COLD bore EXperiment (COLDEX) facility in the SPS accelerator at CERN. In this paper, we describe the manufacturing procedure of the beam screen, the employed laser treatment technique and discuss our first observations in COLDEX confirming electron cloud suppression.",
author = "R. Salemme and V. Baglin and Sergio Calatroni and Paolo Chiggiato and {Di Girolamo}, B. and {Garcia-Tabares Valdivieso}, Elisa and B. Jenninger and L. Prever-Loiri and M. Sitko and Amin Abdolvand and Stefan Wackerow",
note = "The laser structuring work was conducted in-house at the University of Dundee under the aegis of grants and financial support from the STFC (Grant No. ST/P00086X/1) and CERN (Collaboration Agreement KN3362). The support of the CERN EN-MME central workshop team, I. Wevers and C. Vazquez Pelaez during, respectively, the BS manufacture, characterization and installation is warmly acknowledged.",
year = "2018",
month = "6",
doi = "10.18429/JACoW-IPAC2018-WEPMG005",
language = "English",
pages = "2616--2619",
editor = "Shane Koscielniak and Todd Satogata and Schaa, {Volker R. W.} and Jana Thomson",
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Salemme, R, Baglin, V, Calatroni, S, Chiggiato, P, Di Girolamo, B, Garcia-Tabares Valdivieso, E, Jenninger, B, Prever-Loiri, L, Sitko, M, Abdolvand, A & Wackerow, S 2018, First Beam Test of Laser Engineered Surface Structures (LESS) at Cryogenic Temperature in CERN SPS Accelerator. in S Koscielniak, T Satogata, VRW Schaa & J Thomson (eds), IPAC 2018: Proceedings of the 9th International Particle Accelerator Conference., WEPMG005, JACoW, Geneva, pp. 2616-2619, 9th International Particle Accelerator Conference, Vancouver, Canada, 29/04/18. https://doi.org/10.18429/JACoW-IPAC2018-WEPMG005

First Beam Test of Laser Engineered Surface Structures (LESS) at Cryogenic Temperature in CERN SPS Accelerator. / Salemme, R. (Lead / Corresponding author); Baglin, V.; Calatroni, Sergio; Chiggiato, Paolo; Di Girolamo, B.; Garcia-Tabares Valdivieso, Elisa; Jenninger, B.; Prever-Loiri, L.; Sitko, M.; Abdolvand, Amin; Wackerow, Stefan.

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. 2616-2619 WEPMG005.

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

TY - GEN

T1 - First Beam Test of Laser Engineered Surface Structures (LESS) at Cryogenic Temperature in CERN SPS Accelerator

AU - Salemme, R.

AU - Baglin, V.

AU - Calatroni, Sergio

AU - Chiggiato, Paolo

AU - Di Girolamo, B.

AU - Garcia-Tabares Valdivieso, Elisa

AU - Jenninger, B.

AU - Prever-Loiri, L.

AU - Sitko, M.

AU - Abdolvand, Amin

AU - Wackerow, Stefan

N1 - The laser structuring work was conducted in-house at the University of Dundee under the aegis of grants and financial support from the STFC (Grant No. ST/P00086X/1) and CERN (Collaboration Agreement KN3362). The support of the CERN EN-MME central workshop team, I. Wevers and C. Vazquez Pelaez during, respectively, the BS manufacture, characterization and installation is warmly acknowledged.

PY - 2018/6

Y1 - 2018/6

N2 - Electron cloud mitigation is an essential requirement for accelerators of positive particles with high intensity beams to guarantee beam stability and limited heat load in cryogenic systems. Laser Engineered Surface Structures (LESS) are being considered, within the High Luminosity upgrade of the LHC collider at CERN (HL-LHC), as an option to reduce the Secondary Electron Yield (SEY) of the surfaces facing the beam, thus suppressing the electron cloud phenomenon. As part of this study, a 2.2 m long Beam Screen (BS) with LESS has been tested at cryogenic temperature in the COLD bore EXperiment (COLDEX) facility in the SPS accelerator at CERN. In this paper, we describe the manufacturing procedure of the beam screen, the employed laser treatment technique and discuss our first observations in COLDEX confirming electron cloud suppression.

AB - Electron cloud mitigation is an essential requirement for accelerators of positive particles with high intensity beams to guarantee beam stability and limited heat load in cryogenic systems. Laser Engineered Surface Structures (LESS) are being considered, within the High Luminosity upgrade of the LHC collider at CERN (HL-LHC), as an option to reduce the Secondary Electron Yield (SEY) of the surfaces facing the beam, thus suppressing the electron cloud phenomenon. As part of this study, a 2.2 m long Beam Screen (BS) with LESS has been tested at cryogenic temperature in the COLD bore EXperiment (COLDEX) facility in the SPS accelerator at CERN. In this paper, we describe the manufacturing procedure of the beam screen, the employed laser treatment technique and discuss our first observations in COLDEX confirming electron cloud suppression.

U2 - 10.18429/JACoW-IPAC2018-WEPMG005

DO - 10.18429/JACoW-IPAC2018-WEPMG005

M3 - Conference contribution

SP - 2616

EP - 2619

BT - IPAC 2018

A2 - Koscielniak, Shane

A2 - Satogata, Todd

A2 - Schaa, Volker R. W.

A2 - Thomson, Jana

PB - JACoW

CY - Geneva

ER -

Salemme R, Baglin V, Calatroni S, Chiggiato P, Di Girolamo B, Garcia-Tabares Valdivieso E et al. First Beam Test of Laser Engineered Surface Structures (LESS) at Cryogenic Temperature in CERN SPS Accelerator. In Koscielniak S, Satogata T, Schaa VRW, Thomson J, editors, IPAC 2018: Proceedings of the 9th International Particle Accelerator Conference. Geneva: JACoW. 2018. p. 2616-2619. WEPMG005 https://doi.org/10.18429/JACoW-IPAC2018-WEPMG005