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; Stefan Wackerow; Amin Abdolvand

doi:10.1088/1742-6596/1067/8/082017

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, Stefan Wackerow, Amin Abdolvand

Physics

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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
Article number	082017
Pages (from-to)	1-6
Number of pages	6
Journal	Journal of Physics: Conference Series
Volume	1067
Early online date	5 Oct 2018
DOIs	https://doi.org/10.1088/1742-6596/1067/8/082017
Publication status	Published - 2018
Event	9th International Particle Accelerator Conference - Vancouver, Canada Duration: 29 Apr 2018 → 4 May 2018 https://ipac18.org/

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10.1088/1742-6596/1067/8/082017Licence: CC BY

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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., Wackerow, S., & Abdolvand, A. (2018). First beam test of Laser Engineered Surface Structures (LESS) at cryogenic temperature in CERN SPS accelerator. Journal of Physics: Conference Series, 1067, 1-6. Article 082017. https://doi.org/10.1088/1742-6596/1067/8/082017

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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 Stefan Wackerow and Amin Abdolvand",

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doi = "10.1088/1742-6596/1067/8/082017",

language = "English",

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journal = "Journal of Physics: Conference Series",

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

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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, Wackerow, S & Abdolvand, A 2018, 'First beam test of Laser Engineered Surface Structures (LESS) at cryogenic temperature in CERN SPS accelerator', Journal of Physics: Conference Series, vol. 1067, 082017, pp. 1-6. https://doi.org/10.1088/1742-6596/1067/8/082017

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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 - Wackerow, Stefan

AU - Abdolvand, Amin

PY - 2018

Y1 - 2018

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.

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DO - 10.1088/1742-6596/1067/8/082017

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SN - 1742-6588

VL - 1067

SP - 1

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JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

M1 - 082017

T2 - 9th International Particle Accelerator Conference

Y2 - 29 April 2018 through 4 May 2018

ER -

First beam test of Laser Engineered Surface Structures (LESS) at cryogenic temperature in CERN SPS accelerator

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An Automated Machine Prototype for Vacuum Chamber Inner Wall Laser Treatment for E-cloud Mitigation

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First beam test of Laser Engineered Surface Structures (LESS) at cryogenic temperature in CERN SPS accelerator

Abstract

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An Automated Machine Prototype for Vacuum Chamber Inner Wall Laser Treatment for E-cloud Mitigation

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