CERN Accelerating science

Accelerator Physics

Posledne pridané:
Control of Proton Beam Self-Modulation for AWAKE via Initial Beam Parameters / Wyler, Samuel Stefan
Plasma wakefield acceleration is a promising concept in the development of a new type of electron accelerators for high-energy physics experiments [...]
CERN-THESIS-2022-107 - 100 p.

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Report from LHC MD 3312: Replicating HL-LHC DA / Dilly, Joschua Werner (Humboldt University of Berlin (DE)) ; Albert, Markus (CERN) ; Carlier, Felix Simon (CERN) ; Coello De Portugal - Martinez Vazquez, Jaime Maria ; Dalena, Barbara (Université Paris-Saclay (FR)) ; Fol, Elena (CERN) ; Hofer, Michael (CERN) ; Maclean, Ewen Hamish (CERN) ; Malina, Lukas ; Persson, Tobias Hakan Bjorn (CERN) et al.
During MD3312 on the 30.10.2018 the non-linear conditions in the insertion regions of the planned HL-LHC were replicated to our best knowledge and within the capabilities of the hardware currently available in the LHC: A flat ATS-optics scheme of beta* = 15cm / 60cm in IP1 and IP5 was applied as well as sextupole, octupole and (normal) dodecapole errors were introduced into the machine via the corrector magnets in the interaction regions. [...]
- 2022.

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A Kilometre-range Distributed Relative Humidity Fibre Sensor / Pimentel Das Neves, Tiago Filipe
Fibre optics sensors have been identified as very good candidates for environmental monitoring inside the silicon detectors operated at CERN’s Large Hadron Collider [...]
CERN-THESIS-2021-343 - Lausanne : EPFL, 2022-03-04. - 154 p.

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Benchmark Between Measured and Simulated Radiation Level Data at the Mixed-Field CHARM Facility at CERN / Prelipcean, Daniel (CERN ; Munich, Tech. U.) ; Lerner, Giuseppe (CERN) ; Garcia Alia, Ruben (CERN) ; Bilko, Kacper (CERN) ; Infantino, Angelo (CERN) ; Di Francesca, Diego (CERN) ; Trummer, Julia (CERN) ; Ricci, Daniel (CERN) ; Brucoli, Matteo (CERN) ; Danzeca, Salvatore (CERN)
A benchmark between various radiation monitors employed at CERN for radiation to electronics applications and their simulated values with the FLUKA Monte Carlo is performed at the CHARM mixed-field irradiation facility. Comparisons are made for different operational conditions, using data recorded in the 2015–2018 period..
2022 - 8 p. - Published in : IEEE Trans. Nucl. Sci. 69 (2022) 1557-1564 Fulltext: PDF;

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FCC-ee Optics Design / Oide, Katsunobu (KEK, Tsukuba)
2017 - 7 p. - Published in : ICFA Beam Dyn. Newsl.: 72 (2017) , pp. 19-25 Fulltext: PDF;

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HOM Mitigation for FCC-ee / Novokhatski, Alexander (SLAC)
High electron and positron currents (1.5 A) are planned to be used in the Future Circular electron-positron Collider (FCC-ee) with a goal to archive high luminosity of order of 2.3 1036 cm-2s-2 at the Z-production collision at the beam energy of 45.6 GeV [1, 2]. Coherent effects at the high-current machine impose certain limitations on the magnitude of the impedance of the machine. [...]
2017 - 5 p. - Published in : ICFA Beam Dyn. Newsl.: 72 (2017) , no. 72, pp. 78-82 Fulltext: PDF;

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Recommissioning of the CERN AD Stochastic Cooling System in 2021 after Long Shutdown 2 / Höfle, Wolfgang (CERN) ; Carli, Christian (CERN) ; Caspers, Fritz (CERN) ; Dupuy, Bruno (CERN) ; Gamba, Davide (CERN) ; Louwerse, Reinier (CERN) ; Myklebust, Vebjorn Roed (CERN) ; Oliveira, Joao Carlos (CERN) ; Ponce, Laurette (CERN) ; Rey, Stephane (CERN) et al.
The power system of the Stochastic Cooling System of the anti-proton decelerator AD at CERN, installed on top of the shielding blocks of the AD ring, was completely dismantled during the long shutdown 2 (LS2) at the end of the 2018 run in order to gain access to the accelerator for magnet consolidation. At start-up, this required finding and verifying the correct delays for all 48 power amplifiers feeding to the two kickers by means of beam transfer functions for the two cooling plateaus at 3.57 GeV/c and 2 GeV/c. [...]
2021 - 6 p. - Published in : JACoW COOL 2021 (2021) 20-25 Fulltext: PDF;
In : International Workshop on Beam Cooling and Related Topics (COOL 2021), Novosibirsk, Russian Federation, 1 - 5 Nov 2021, pp.20-25

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New CERN SPS Beam Dump Imaging System / Burger, Stephane (CERN) ; Bravin, Enrico (CERN) ; Roncarolo, Federico (CERN) ; Topaloudis, Athanasios (CERN) ; Velotti, Francesco (CERN) ; Veyrunes, Eric (CERN)
As part of the LHC injector Upgrade (LIU), the CERN SPS is now equipped with a new Beam Dumping System (SBDS) designed to cope with the high power beams foreseen for the High Luminosity LHC (HL-LHC) era. Before reaching the dump, the proton beam (from 26 to 450 GeV) is vertically kicked and then diluted passing through a series of horizontal and vertical bumps. [...]
JACoW, 2021 - 5 p. - Published in : JACoW IBIC 2021 (2021) 254-258 Fulltext: PDF;
In : 10th International Beam Instrumentation Conference (IBIC 2021), Online, Korea, 13 - 17 Sep 2021, pp.254-258

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Prospects for beam-based study of dodecapole nonlinearities in the CERN High-Luminosity Large Hadron Collider / Maclean, Ewen Hamish (CERN) ; Carlier, Felix Simon (CERN) ; Dilly, Joschua Werner (Humboldt University of Berlin (DE)) ; Giovannozzi, Massimo (CERN) ; Tomas Garcia, Rogelio (CERN)
Nonlinear magnetic errors in low-β insertions can have a significant impact on the beam-dynamics of a collider such as the CERN Large Hadron Collider (LHC) and its luminosity upgrade (HL-LHC). [...]
- 2022. - 34 p.

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Mapping charge capture and acceleration in a plasma wakefield of a proton bunch using variable emittance electron beam injection / AWAKE Collaboration
In the Phase 2 of the AWAKE first experimental run (from May to November 2018), an electron beam was used to probe and test proton-driven wakefield acceleration in a rubidium plasma column. In this work, we analyze the overall charge capture and shot-to-shot reproducibility of the proton-driven plasma wakefield accelerator with various electron bunch injection parameters. [...]
arXiv:2206.14075.- 2022-07-19 - 4 p. - Published in : JACoW IPAC 2022 (2022) WEPOST039 Fulltext: document - PDF; 2206.14075 - PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.WEPOST039

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