CERN Accelerating science

All CERN Accelerators documents

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2024-07-12
10:33
Simulation and RF Measurement Report to Determine the Longitudinal Beam Coupling Impedance in the SPS-BGI / Bursali, Hikmet (CERN) ; Vollinger, Christine (CERN)
The Beam Gas Ionization (BGI) monitors are non-destructive beam diagnostic devices to measure the transverse beam profiles in the horizontal and vertical planes. [...]
CERN-ACC-NOTE-2024-0014.
- 2024. - 22 p.

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2024-07-11
15:00
Update of Facility Technical Studies for the FPF / Boyd, Jamie (CERN) ; Gamba, Davide (CERN) ; Osborne, John Andrew (CERN) ; Bud, Tamara Alice (CERN) ; Balazs, Kincso (CERN) ; Corso, Jean-Pierre (CERN) ; Magazinik, Anastasiya (Tampere University of Technology (FI)) ; Navascues Cornago, Angel (CERN)
The Forward Physics Facility (FPF) has been proposed to house a set of detectors to study collider neutrinos and search for new particles in the High-Luminosity LHC era. This report provides an update to the space and infrastructure requirements of the Facility, a result of integration studies carried out by CERN technical teams in conjunction with the FPF experimental community. [...]
CERN-PBC-Notes-2024-004.- Geneva : CERN, 2024 - 23. Fulltext: PDF;

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2024-07-07
06:02
R&D; for positron sources at high-energy lepton colliders / Moortgat-Pick, Gudrid (Hamburg U. ; DESY) ; Riemann, Sabine (DESY, Zeuthen) ; Sievers, Peter (CERN) ; Tenholt, Carmen (DESY)
Several designs for high-energy Lepton Colliders serving as Higgs factories but extendable to higher energies up to the TeV range are under discussion. The most mature design is the International Linear Collider (ILC), but also the Compact Linear Collider (CLIC) as well as the new concept of a Hybrid Asymmetric Linear Higgs Factory (HALHF) have a large physics potential. [...]
2024 - 12 p. - Published in : PoS EPS-HEP2023 (2024) 626 Fulltext: PDF;
In : 2023 European Physical Society Conference on High Energy Physics (EPS-HEP2023), Hamburg, Germany, 20 - 25 Aug 2023, pp.626

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2024-07-05
07:49
Planar deposition of Nb thin films by HiPIMS for superconducting radiofrequency applications / Carlos, Carlota P A (CERN ; U. Geneva (main)) ; Leith, Stewart (CERN) ; Rosaz, Guillaume (CERN) ; Pfeiffer, Stephan (CERN) ; Senatore, Carmine (U. Geneva (main))
Cost efficiency and sustainability are critical challenges for future accelerator machines. Nb-coated Cu (Nb/Cu) superconducting radiofrequency (SRF) accelerating cavities, while requiring R&D; to meet high acceleration gradient performance standards, show potential for addressing these challenges. [...]
2024 - 12 p. - Published in : Vacuum 227 (2024) 113354 Fulltext: PDF;

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2024-07-05
07:49
Deformation Behavior and Degradation on Rutherford Cabling of Nb$_{\text{3}}$Sn Wires / Hopkins, Simon C (CERN) ; Medina-Clavijo, Bentejui (CERN) ; Rastoll, Cristin (CERN ; U. Bourgogne) ; Rodia, Davide (CERN ; Geneva U.) ; Malabaila, Marina (CERN) ; Barth, Christian (CERN) ; Fleiter, Jerome (CERN) ; Boutboul, Thierry (CERN) ; Ballarino, Amalia (CERN)
In the production of Rutherford cables, Nb 3 Sn strands are subjected to severe deformation; and to evaluate this degradation prior to cabling, uniaxial rolling with a thickness reduction of ∼15% has often been used. The effects of this deformation on superconducting performance differ significantly between wire designs. [...]
2024 - 8 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 6001308 Fulltext: PDF;

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2024-07-05
07:49
Beam loss detection based on generation of Cherenkov light in optical fibers in the CERN Linear Electron Accelerator for Research / Benítez, S (CERN) ; Salvachúa, B (CERN) ; Chen, M (CERN)
Cherenkov optical beam loss monitors (oBLMs) based on optical fibers are a revolutionary achievement among the monitoring systems in particle accelerators. Due to the nature of the Cherenkov phenomenon and the intrinsic characteristics of optical fibers, the photon production and fiber light transmission need to be studied to deduce the total amount of Cherenkov photons detected by the photosensors attached at the end of the system. [...]
2024 - 8 p. - Published in : Phys. Rev. Accel. Beams 27 (2024) 052901 Fulltext: PDF;

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2024-07-05
07:48
Magnets for a Muon Collider—Needs and Plans / Bottura, L (CERN) ; Accettura, C (CERN) ; Amemiya, N (Kyoto U.) ; Auchmann, B (PSI, Villigen) ; Berg, J S (Brookhaven Natl. Lab.) ; Bersani, A (INFN, Genoa) ; Bertarelli, A (CERN) ; Boattini, F (CERN) ; Bordini, B (CERN) ; Borges de Sousa, P (CERN) et al.
We describe the magnet challenges for a Muon Collider, an exciting option considered for the future of particle physics at the energy frontier. Starting from the comprehensive work performed by the US Muon Accelerator Program, we have reviewed the performance specifications dictated by beam physics and the operating conditions to satisfy the accelerator needs. [...]
2024 - 8 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 1-8 Fulltext: PDF;

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2024-07-05
07:48
Selective electron beam sensing through coherent Cherenkov diffraction radiation / Senes, E (CERN) ; Krupa, M (CERN) ; Mazzoni, S (CERN) ; Lasocha, K (CERN) ; Lefevre, T (CERN) ; Shloegelhofer, A (CERN) ; Wendt, M (CERN) ; Davut, C (Manchester U.) ; Karataev, P (JAI, UK) ; Pakuza, C (JAI, UK) et al.
We exploit the coherent emission of Cherenkov diffraction radiation (ChDR) by a relativistic electron beam to sense its position even in the presence of other particle beams. ChDR is produced in alumina inserts embedded in the vacuum chamber walls and recorded in a narrow band centered at 30 GHz. [...]
2024 - 6 p. - Published in : Phys. Rev. Res. 6 (2024) 023278 Fulltext: PDF;

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2024-07-05
07:48
Beam physics studies for a high charge and high beam quality laser-plasma accelerator / Marini, Samuel (IRFU, Saclay, DACM) ; Minenna, Damien F G (IRFU, Saclay, DACM) ; Massimo, Francesco (LPGP, Orsay) ; Batista, Laury (IRFU, Saclay, DACM) ; Bencini, Vittorio (CERN) ; Chancé, Antoine (IRFU, Saclay, DACM) ; Chauvin, Nicolas (IRFU, Saclay, DACM) ; Doebert, Steffen (CERN) ; Farmer, John (Munich, Max Planck Inst.) ; Gschwendtner, Edda (CERN) et al.
Electron acceleration by laser-plasma techniques is approaching maturity and is getting ready for the construction of particle accelerators with dedicated applications. We present a general methodology showing how beam physics studies can be used to achieve a specific parameter set in a laser-plasma accelerator. [...]
2024 - 15 p. - Published in : Phys. Rev. Accel. Beams 27 (2024) 063401 Fulltext: PDF;

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2024-07-05
07:48
Leapfrogging into the future / Benedikt, Michael (CERN) ; Ellis, John (CERN) ; Charitos, Panagiotis (CERN) ; Liyanage, Shantha
The paper discusses the open questions in particle physics that motivate the design of a post-LHC generation of colliders and experiments that could offer answers to these questions by pushing further back the luminosity and energy frontiers. Evolution in the very early stages of the history of the Universe is still a puzzle, as is its accelerating expansion. [...]
2024 - 26 p. - Published in : 10.1093/oso/9780198881193.003.0006 Fulltext: PDF;

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