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

R. Salemme; V. Baglin; Sergio Calatroni; Paolo Chiggiato; B. Di Girolamo; Elisa Garcia-Tabares Valdivieso; B. Jenninger; L. Prever-Loiri; M. Sitko; Amin Abdolvand; Stefan Wackerow

doi:10.18429/JACoW-IPAC2018-WEPMG005

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

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	IPAC 2018
Subtitle of host publication	Proceedings of the 9th International Particle Accelerator Conference
Editors	Shane Koscielniak, Todd Satogata, Volker R. W. Schaa, Jana Thomson
Place of Publication	Geneva
Publisher	JACoW
Pages	2616-2619
Number of pages	4
ISBN (Electronic)	9783954501847
DOIs	https://doi.org/10.18429/JACoW-IPAC2018-WEPMG005
Publication status	Published - Jun 2018
Event	9th International Particle Accelerator Conference - Vancouver, Canada Duration: 29 Apr 2018 → 4 May 2018 https://ipac18.org/

Conference

Conference	9th International Particle Accelerator Conference
Country/Territory	Canada
City	Vancouver
Period	29/04/18 → 4/05/18
Internet address	https://ipac18.org/

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.18429/JACoW-IPAC2018-WEPMG005Licence: CC BY

Final Published VersionFinal published version, 442 KBLicence: CC BY

Abdolvand, Amin
- Mechanical and Industrial Engineering - Professor of Functional Materials and Photonics
Person: Academic

Cite this

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, V. R. W. Schaa, & J. Thomson (Eds.), IPAC 2018: Proceedings of the 9th International Particle Accelerator Conference (pp. 2616-2619). Article WEPMG005 JACoW. https://doi.org/10.18429/JACoW-IPAC2018-WEPMG005

@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.; 9th International Particle Accelerator Conference ; Conference date: 29-04-2018 Through 04-05-2018",

year = "2018",

month = jun,

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",

booktitle = "IPAC 2018",

publisher = "JACoW",

url = "https://ipac18.org/",

}

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, British Columbia, 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 et al.
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 proceeding › Conference 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

T2 - 9th International Particle Accelerator Conference

Y2 - 29 April 2018 through 4 May 2018

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 doi: 10.18429/JACoW-IPAC2018-WEPMG005

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

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Abdolvand, Amin

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