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CERN Accelerating science

Accelerator Physics

Последние добавления:
2024-06-19
13:09
Characterisation of the optics of the TT24 and P42 beamlines in the CERN SPS North Area / Dyks, Luke Aidan (University of Oxford (GB)) ; Banerjee, Dipanwita (CERN) ; Baratto Roldan, Anna (CERN) ; Bernhard, Johannes (CERN) ; Brugger, Markus (CERN) ; Charitonidis, Nikolaos (CERN) ; Fraser, Matthew Alexander (CERN) ; Gatignon, Lau (Lancaster University (GB)) ; Goillot, Alice Marie (CERN) ; Gorn, Aleksandr (CERN) et al.
400 GeV protons extracted from the CERN SPS are transported to the T4 target via the TT20 transfer line. The P42 beamline then transports the protons that did not interact in the T4 target to the T10 target. [...]
CERN-PBC-CONF-2024-004.- Geneva : CERN, 2024 - 4. Fulltext: PDF;

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2024-06-18
07:49
LHC Optics Measurements from Transverse Damper for the High Intensity Frontier / Nissinen, Tuuli (CERN) ; Carlier, Felix (CERN) ; Le Garrec, Mael (CERN) ; Maclean, Ewen (CERN) ; Persson, Tobias (CERN) ; Tomás García, Rogelio (CERN) ; Wegscheider, Andreas (CERN)
Current and future accelerator projects are pushing the brightness and intensity frontier, creating new challenges for turn-by-turn based optics measurements. Transverse oscillations are limited in amplitude due to particle losses. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) 479-482 Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.479-482

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2024-06-18
07:49
Characterisation of Cherenkov Diffraction Radiation Using Electro-Optical Methods / Schlögelhofer, Andreas (CERN ; TU Vienna) ; Duvillaret, Lionel (KAPTEOS) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Senes, Eugenio (CERN)
The properties of Cherenkov diffraction radiation (ChDR) have been studied extensively during the recent years to be exploited for non-invasive beam diagnostic devices for short bunches. The dependence of charge and the influence of the bunch form factor on the coherent part of the radiated spectrum have been demonstrated and studied in the past. [...]
2023 - 4 p. - Published in : JACoW IBIC 2023 (2023) TUP022 Fulltext: PDF;
In : 12th International Beam Instrumentation Conference (IBIC 2023), Saskatoon, Canada, 10 - 14 Sep 2023, pp.TUP022

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2024-06-18
07:49
Probing Transverse Impedances in the High Frequency Range at the CERN SPS / de la Fuente, Elena (CERN ; Tech. U. Madrid (main)) ; Bartosik, Hannes (CERN) ; Mases Solé, Ingrid (CERN ; Goethe U., Frankfurt (main)) ; Rumolo, Giovanni (CERN) ; Zannini, Carlo (CERN)
The SPS transverse impedance model, which includes the major impedance contributions in the machine, can be benchmarked through measurements of the Head-Tail mode zero instability. Since the SPS works above transition energy, the head tail mode zero is unstable for negative values of chromaticity. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) 393-396 Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.393-396

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2024-06-18
07:49
High intensity beam dynamics assessment and challenges for HL-LHC / Rumolo, G (CERN) ; Salvant, B (CERN) ; Mounet, N (CERN) ; Tomás, R (CERN) ; Bartosik, H (CERN) ; Baudrenghien, P (CERN) ; Bruce, R (CERN) ; Buffat, X (CERN) ; Calaga, R (CERN) ; De Maria, R (CERN) et al.
The High Luminosity (HL-LHC) project aims to increase the integrated luminosity of CERN’s Large Hadron Collider (LHC) by an order of magnitude compared to its initial design. This requires a large increase in bunch intensity and beam brightness compared to the first LHC runs, and hence poses serious collective-effects challenges, related in particular to electron cloud, instabilities from beam-coupling impedance, and beam-beam effects. [...]
2024 - 7 p. - Published in : JINST
- Published in : JACoW HB: 2023 (2024) , pp. 344-350 Fulltext: PublicationJACoW - PDF; PublicationIOP - PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.T05016

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2024-06-18
07:49
Simulations and First RF Measurements of Coaxial HOM Coupler Prototypes for PERLE SRF Cavities / Barbagallo, Carmelo (IJCLab, Orsay ; U. Paris-Saclay) ; Barriere, Simon (CERN) ; Clement, Sebastien (CERN) ; Duchesne, Patricia (IJCLab, Orsay) ; Gerard, Romain Louis (CERN) ; Gerigk, Frank (CERN) ; Henry, James (Jefferson Lab) ; Kaabi, Walid (IJCLab, Orsay) ; Maurin, Pierre (CERN) ; Olivier, Gilles (IJCLab, Orsay) et al.
Superconducting Radio-Frequency (SRF) linac cryomodules are foreseen for the high-current multi-turn energy recovery linac PERLE (Powerful Energy Recovery Linac for Experiments). Coaxial higher order mode (HOM) couplers are the primary design choice to absorb beam-induced power and avoid beam instabilities. [...]
2023 - 4 p. - Published in : JACoW SRF 2023 (2023) WEPWB103 Fulltext: PDF;
In : 21st International Conference on Radio-Frequency Superconductivity (SRF 2023), Grand Rapids, MI, United States, 22 - 30 Jun 2023, pp.WEPWB103

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2024-06-18
07:49
A Novel Laser Ionized Rb Plasma Source for Plasma Wakefield Accelerators / Öz, Erdem (Munich, Max Planck Inst.) ; Batsch, Fabian (Munich, Max Planck Inst.) ; Muggli, Patric (Munich, Max Planck Inst.)
A proton driven plasma wakefield accelerator* is to be conducted at CERN by the AWAKE collaboration. Externally injected electrons are accelerated in a large gradient (~GeV/m) wakefield. [...]
2014 - 3 p. - Published in : 10.18429/JACoW-IPAC2014-TUPME073 Fulltext: PDF; External link: Full-text at JACoW Server
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.TUPME073

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2024-06-18
07:49
Transverse Coherent Instability Studies for the High-Energy Part of the Muon Collider Complex / Amorim, David (CERN) ; Batsch, Fabian (CERN) ; Bottura, Luca (CERN) ; Calzolari, Daniele (CERN) ; Carli, Christian (CERN) ; Chancé, Antoine (IRFU, Saclay) ; Damerau, Heiko (CERN) ; Grudiev, Alexej (CERN) ; Lechner, Anton (CERN) ; Métral, Elias (CERN) et al.
The International Muon Collider Collaboration (IMCC) is studying a 3 TeV center-of-mass muon collider ring, as well as a possible next stage at 10 TeV. Muons being 200 times heavier than electrons, limitations from synchrotron radiation are mostly suppressed, but the muon decay drives the accelerator chain design. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) THBP17 Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.THBP17

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2024-06-18
07:49
Revised Collimation Configuration for the Updated FCC-hh Layout / Abramov, Andrey (CERN) ; Bruce, Roderik (CERN) ; Giovannozzi, Massimo (CERN) ; Pérez Segurana, Gustavo (CERN) ; Redaelli, Stefano (CERN) ; Risselada, Thys (CERN)
The collimation system for the hadron Future Circular Collider (FCC-hh) must handle proton beams with an unprecedented nominal beam energy and stored beam energy in excess of 8 GJ, and protect the superconducting magnets and other sensitive equipment while ensuring a high operational efficiency. The recent development of the 16-dipole lattice baseline for the FCC-hh, and the associated layout changes, has necessitated an adaptation of the collimation system. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) 495-498 Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.495-498

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2024-06-18
07:49
A Linearized Vlasov Method for the Study of Transverse e-Cloud Instabilities / Johannesson, Sofia (CERN ; Ecole Polytechnique, Lausanne) ; Iadarola, Giovanni (CERN) ; Seidel, Mike (PSI, Villigen ; Ecole Polytechnique, Lausanne)
Using a Vlasov approach, electron cloud driven instabilities can be modeled to study beam stability on time scales that conventional Particle In Cell simulation methods cannot access. The Vlasov approach uses a linear description of electron cloud forces that accounts for both the betatron tune modulation along the bunch and the dipolar kicks from the electron cloud. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) 462-465 Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.462-465

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