CERN Accélérateur de science

Accelerator Physics

Derniers ajouts:
2021-10-20
09:50
Beam Instabilities in Circular Particle Accelerators / Metral, Elias (CERN)
The theory of impedance-induced bunched-beam coherent instabilities is reviewed following Laclare's formalism, adding the effect of an electronic damper in the transverse plane. [...]
CERN-ACC-SLIDES-2021-0001.
- 2021.

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2021-10-20
06:01
The Gamma Factory path to high-luminosity LHC with isoscalar beams / Krasny, M W (Paris U., VI-VII ; CERN) ; Petrenko, A (Novosibirsk, IYF ; CERN) ; Płaczek, W (Jagiellonian U. (main))
There are two main ways to increase LHC luminosity without upgrading CERN injectors: (1) modification of beam-collision optics and (2) reduction of beam transverse emittance. The former is followed in the ongoing high-luminosity upgrade of the LHC (HL-LHC), while the latter, applicable only to ion beams, is described in this contribution [...]
SISSA, 2021 - 6 p. - Published in : PoS ICHEP2020 (2021) 690 Fulltext: PDF;
In : 40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.690

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2021-10-12
06:02
Studies of the Energy Recovery Performance of the PERLE Project / André, Kévin (CERN ; Liverpool U.) ; Bogacz, Alex (JLAB, FEL) ; Holzer, Bernhard (CERN)
The Powerful Energy Recovery Linac for Experiments (PERLE) is an accelerator facility for the development and application of the energy recovery technique for an intense 500 MeV electron beam. The paper presents the studies that have been performed to assess the quality of the ERL lattice design and beam optics. [...]
2021 - 4 p. - Published in : 10.18429/JACoW-IPAC2021-WEPAB065 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, Br, 24 - 28 May 2021, pp.WEPAB065

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2021-10-12
06:02
Energy Deposition Study of the CERN HL-LHC Optics v1.5 in the ATLAS and CMS Insertions / Sabaté-Gilarte, Marta (CERN) ; Cerutti, Francesco (CERN)
The High Luminosity Large Hadron Collider (HL-LHC) is the approved CERN project aiming at further increasing the integrated luminosity of the LHC by a factor 10. As such, it implies a complete redesign of the experimental high-luminosity insertions of ATLAS and CMS. [...]
2021 - 4 p. - Published in : 10.18429/JACoW-IPAC2021-MOPAB012 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, Br, 24 - 28 May 2021, pp.MOPAB012

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2021-10-12
06:02
First Results of the IOTA Ring Research at Fermilab / Valishev, Alexander (Fermilab) ; Arodzero, Anatoli (RadiaBeam Tech.) ; Broemmelsiek, Daniel (Fermilab) ; Bruhwiler, David (RadiaSoft, Boulder) ; Burov, Alexey (Fermilab) ; Carlson, Kermit (Fermilab) ; Cathey, Brandon (Fermilab) ; Chattopadhyay, Swapan (Northern Illinois U. ; Fermilab) ; Eddy, Nathan (Fermilab) ; Edelen, Jonathan (RadiaSoft, Boulder) et al.
The IOTA ring at Fermilab is a unique machine exclusively dedicated to accelerator beam physics R&D.; The research conducted at IOTA includes topics such as nonlinear integrable optics, suppression of coherent beam instabilities, optical stochastic cooling and quantum science experiments. In this talk we report on the first results of experiments with implementations of nonlinear integrable beam optics. [...]
2021 - 6 p. - Published in : 10.18429/JACoW-IPAC2021-MOXB02 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, Br, 24 - 28 May 2021, pp.19-24

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2021-10-12
06:02
FailSim: A Numerical Toolbox for the Study of Fast Failures and Their Impact on Machine Protection at the CERN Large Hadron Collider / Hernalsteens, Cédric (CERN) ; Sterbini, Guido (CERN) ; Tuormaa, Oskari (CERN) ; Wiesner, Christoph (CERN) ; Wollmann, Daniel (CERN)
The High Luminosity LHC (HL-LHC) foresees to reach a nominal, levelled luminosity of 5·10³⁴ cm⁻² s⁻¹ through a higher beam brightness and by using new equipment, such as larger aperture final focusing quadrupole magnets. The HL-LHC upgrade has critical impacts on the machine protection strategy, as the stored beam energy reaches 700 MJ for each of the two beams. [...]
2021 - 4 p. - Published in : 10.18429/JACoW-IPAC2021-MOPAB022 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, Br, 24 - 28 May 2021, pp.111-114

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2021-10-12
06:02
Development and Testing of a Cherenkov Beam Loss Monitor in CLEAR Facility / Benitez Berrocal, Sara (CERN) ; Effinger, Ewald (CERN) ; Farabolini, Wilfrid (CERN) ; Gilardi, Antonio (CERN) ; Korysko, Pierre (CERN) ; Lane, Phil (Huddersfield U.) ; Lima, Erika (CERN) ; Salvachua, Belen (CERN) ; Viganò, William (CERN)
Beam Loss Monitors are fundamental diagnostic systems in particle accelerators. Beam losses are measured by a wide range of detectors with excellent results; most of these devices are used to measure local beam losses. [...]
2021 - 4 p. - Published in : 10.18429/JACoW-IPAC2021-WEPAB021 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, Br, 24 - 28 May 2021, pp.WEPAB021

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2021-10-12
06:01
Optics Measurements and Correction Plans for the HL-LHC / Persson, Tobias (CERN) ; Buffat, Xavier (CERN) ; Carlier, Felix (CERN) ; Coello de Portugal, Jaime Maria (PSI, Villigen) ; De Maria, Riccardo (CERN) ; Dilly, Joschua (CERN) ; Fol, Elena (CERN) ; Gamba, Davide (CERN) ; Garcia Morales, Hector (CERN) ; García-Tabarés Valdivieso, Ana (CERN) et al.
The High Luminosity LHC (HL-LHC) will require stringent optics correction to operate safely and deliver the design luminosity to the experiments. In order to achieve this, several new methods for optics correction have been developed. [...]
2021 - 4 p. - Published in : 10.18429/JACoW-IPAC2021-WEPAB026 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, Br, 24 - 28 May 2021, pp.2656-2659

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2021-10-12
06:01
Optics Configurations for Improved Machine Impedance and Cleaning Performance of a Multi-Stage Collimation Insertion / Bruce, Roderik (CERN) ; De Maria, Riccardo (CERN) ; Giovannozzi, Massimo (CERN) ; Mounet, Nicolas (CERN) ; Redaelli, Stefano (CERN)
For a two-stage collimation system, the betatron phase advance between the primary and secondary stages is usually set to maximise the absorption of secondary particles outscattered from the primary. Another constraint is the contribution to the ring impedance of the collimation system, which can be decreased through an optimized insertion optics, featuring large values of the beta functions. [...]
2021 - 4 p. - Published in : 10.18429/JACoW-IPAC2021-MOPAB006 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, Br, 24 - 28 May 2021, pp.57-60

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2021-10-12
06:01
Accelerator Challenges of the LHeC Project / Holzer, Bernhard (CERN) ; André, Kévin (CERN) ; Bogacz, Alex (Jefferson Lab) ; Brüning, Oliver (CERN) ; Klein, Max (Liverpool U.)
The LHeC project studies the design of a future electron-proton collider at CERN that will run in parallel to the standard LHC operation. For this purpose, the existing LHC storage ring will be combined with an Energy Recovery Linac (ERL), to accelerate electrons up to kinetic energy of 50 GeV. [...]
2021 - 4 p. - Published in : 10.18429/JACoW-IPAC2021-WEPAB001 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, Br, 24 - 28 May 2021, pp.2570-2573

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