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All CERN Accelerators documents

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2021-10-22
07:49
Combined-function optics for circular high-energy hadron colliders / Giovannozzi, M. (CERN) ; Todesco, E. (CERN)
The design of future circular high-energy hadron colliders is based on the achievement of challenging magnetic fields, needed to keep the hadron beams orbiting along the ring circumference. [...]
arXiv:2109.13720. -
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2021-10-21
12:30
PRACTICAL CHALLENGES OF THE LHC MAIN BEAM DUMP UPGRADES / Martin Ruiz, Jose Maria (CERN) ; Kershaw, Keith (CERN) ; Calviani, Marco (CERN) ; Grenier, Damien (CERN) ; Maestre Heredia, Jorge ; Torregrosa Martin, Claudio Leopoldo (Universidad de Oviedo (ES)) ; Buonocore, Luca Rosario (CERN) ; Serrano Galvez, Pablo ; Matheson, Eloise (CERN) ; Sola Merino, Jorge et al.
The two Large Hadron Collider (LHC) beam dumps have to withstand arduous operating conditions and are essential for the safe and reliable operation of the collider. [...]
CERN-ACC-NOTE-2021-0027. - 2021. - 8 p.
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2021-10-20
14:36
Effective impedance for the threshold of loss of Landau damping / Nese, Sigurd
Loss of Landau damping (LLD) in the longitudinal plane is an important intensity limitation in existing and future hadron accelerators. [...]
CERN-STUDENTS-Note-2021-214. - 2021.
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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
Energy Frontier DIS at CERN: the LHeC and the FCC-eh / Holzer, Bernhard (CERN) ; André, Kevin D J (CERN ; Liverpool U.) /LHeC Collaboration ; FCC-eh Study Group Collaboration
The Large Hadron-electron Collider (LHeC) at CERN is a design study in the context of the LHC luminosity upgrade project, HL-LHC, to establish electron-proton/nucleus collisions with centre-of-mass energies in the TeV regime and luminosities in the order of 10^34𝑐𝑚−2𝑠−1. It implies the construction of an energy recovery linac in racetrack configuration to provide an intense 50 GeV electron beam that will collide with the HL-LHC hadron beams. [...]
SISSA, 2021 - 6 p. - Published in : PoS ICHEP2020 (2021) 687 Fulltext: PDF;
In : 40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.687

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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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2021-10-20
04:23
Thin Film (High Temperature) Superconducting Radiofrequency Cavities for the Search of Axion Dark Matter / Golm, J. (CERN) ; Arguedas Cuendis, S.  (CERN) ; Calatroni, S. (CERN) ; Cogollos, C. (ICC, Barcelona U.) ; Döbrich, B. (CERN) ; Gallego, J.D. (Yebes Astron. Ctr.) ; García Barceló, J.M.  (Cartagena Politecnica U.) ; Granados, X. (Barcelona, Autonoma U.) ; Gutierrez, J. (Barcelona, Autonoma U.) ; Irastorza, I.G. (Zaragoza U.) et al.
The axion is a hypothetical particle which is a candidate for cold dark matter. [...]
arXiv:2110.01296. - 5 p.
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2021-10-19
12:04
A Method for Aligning the Phases of C10 Cavities in the AD / Albright, Simon (CERN)
The C10 cavities in the AD are used to rotate the injected beam distribution in the longitudinal phase space and then adiabatically debunch it, hence significantly reducing the momentum spread compared injection. [...]
CERN-ACC-NOTE-2021-0026. - 2021. - 4 p.
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2021-10-15
06:04
Noble liquid calorimetry at the LHC and prospects of its application in future collider experiments / Aleksa, Martin (CERN)
Calorimetry is an important measurement technique in experimental particle physics. Although calorimeters based on liquefied noble gases were first proposed 50 years ago, they continue to play an important role in modern particle physics and have substantially contributed to the discovery of the Higgs boson at the Large Hadron Collider (LHC) at CERN in 2012..
2021 - 4 p. - Published in : Europhys. News 52 (2021) 28-31

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2021-10-14
15:25
Electron beam trajectory reconstruction for transfer lines / Ramjiawan, Rebecca Louise (CERN) ; Velotti, Francesco Maria (CERN)
The goal of the AWAKE Run 2a experiment is to study the electron-seeding of the self-modulation of a proton bunch propagating in plasma. [...]
CERN-ACC-NOTE-2021-0025. - 2021. - 11 p.
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