Paper |
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MOP05 |
Fiber Bragg Grating Sensors as Beam-Induced Heating Monitor for the Central Beam Pipe of CMS |
28 |
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- F. Fienga, G. Breglio, A. Irace, V.R. Marrazzo, L. Sito
University of Napoli Federico II, Napoli, Italy
- N. Beni, G. Breglio, S. Buontempo, F. Carra, F. Fienga, F. Giordano, V.R. Marrazzo, B. Salvant, L. Sito, Z. Szillasi
CERN, Meyrin, Switzerland
- N. Beni, Z. Szillasi
Atomki, Debrecen, Hungary
- S. Buontempo
INFN-Napoli, Napoli, Italy
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The passage of a high-intensity particle beam inside accelerator components generates heating, potentially leading to degradation of the accelerator performance or damage to the component itself. It is therefore essential to monitor such beam-induced heating in accelerators. This paper showcases the capabilities of iPipe, which is a set of Fiber Bragg Grating sensors stuck on the inner beam pipe of the Compact Muon Solenoid (CMS) experiment installed in the CERN Large Hadron Collider (LHC). In this study, the wavelength shift, linked directly to the temperature shift, is measured and is compared with the computed dissipated power for a set of LHC fills. Electromagnetic and thermal simulations were also coupled to predict the beam-induced temperature increase along the beam pipe. These results further validate the sensing system and the methods used to design accelerator components to mitigate beam-induced heating.
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-IBIC2022-MOP05
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About • |
Received ※ 07 September 2022 — Revised ※ 09 September 2022 — Accepted ※ 12 September 2022 — Issue date ※ 15 September 2022 |
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TUP15 |
New Gas Target Design for the HL-LHC Beam Gas Vertex Profile Monitor |
252 |
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- H. Guerin, R. De Maria, R. Kersevan, B. Kolbinger, T. Lefèvre, M.T. Ramos Garcia, B. Salvant, G. Schneider, J.W. Storey
CERN, Meyrin, Switzerland
- S.M. Gibson, H. Guerin
Royal Holloway, University of London, Surrey, United Kingdom
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The Beam Gas Vertex (BGV) instrument is a novel non-invasive transverse beam profile monitor under development for the High Luminosity Upgrade of the Large Hadron Collider (HL-LHC). Its principle is based on the reconstruction of the tracks and vertices issued from beam-gas inelastic hadronic interactions. The instrument is currently in the design phase, and will consist of a gas target, a forward tracking detector installed outside the beam vacuum chamber and computing resources dedicated to event reconstruction. The transverse beam profile image will then be inferred from the spatial distribution of the reconstructed vertices. With this method, the BGV should be able to provide bunch-by-bunch measurement of the beam size, together with a beam profile image throughout the whole LHC energy cycle, and independently of the beam intensity. This contribution describes the design of the gas target system and of the gas tank of the future instrument.
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Poster TUP15 [1.080 MB]
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-IBIC2022-TUP15
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About • |
Received ※ 06 September 2022 — Revised ※ 11 September 2022 — Accepted ※ 12 September 2022 — Issue date ※ 12 December 2022 |
Cite • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
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