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 |
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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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2024-06-18
07:49 |
Radiation Hard Beam Profile Monitors for the North Experimental Beamlines CERN
/ Buchanan, Emma (CERN) ; Cenede, Jean (CERN) ; Deschamps, Stephane (CERN) ; Devauchelle, Wilfried (CERN) ; Frassier, Alexandre (CERN) ; Kearney, Joseph (CERN) ; Larsen, Robert (CERN) ; Ortega Ruiz, Inaki (CERN)
A new radiation hard profile monitor is being researched and developed for the North Area Beamlines at CERN. The monitor must have a spatial resolution of 1 mm or less, an active area of 20 x 20 cm, a low material budget (~0.3%) and be operational in a beam that has a maximum rate of ~2x10¹¹ p/s in the full energy range of 0.5 ¿ 450 GeV/c. [...]
2023 - 5 p.
- Published in : JACoW IBIC 2023 (2023) 321-325
Fulltext: PDF;
In : 12th International Beam Instrumentation Conference (IBIC 2023), Saskatoon, Canada, 10 - 14 Sep 2023, pp.321-325
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