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Verification of electron beam alignment and optics for external off-axis injection in AWAKE Run 2b
/ van Gils, Nikita Z (CERN ; Groningen, KVI) ; Turner, Marlene (CERN) ; Bencini, Vittorio (CERN ; JAI, UK) ; Bergamaschi, Michele (CERN ; Munich, Max Planck Inst.) ; Ranc, Lucas (Munich, Max Planck Inst.) ; Pakuza, Collette (CERN) ; Pannell, Fern (U. Coll. London) ; Della Porta, Giovanni Zevi (CERN) ; Velotti, Francesco (CERN) ; Gerbershagen, Alexander (Groningen, KVI) et al.
The Advanced Wakefield Experiment (AWAKE) has the long term goal to accelerate electrons to particle physics relevant energies using self-modulated proton bunches as drivers in plasma. AWAKE is currently in its Run 2b (2023–2025), where the goal is to stabilise the wakefield amplitude after the saturation of the self-modulation process by introducing a plasma density step. [...]
2025 - 6 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1072 (2025) 170204
Fulltext: PDF;
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Injection and Extraction
/ Bencini, Vittorio (speaker) (John Adams Institute for Accelerator Science (GB))
The storage and acceleration of particles in a synchrotron are typically limited to a range of energy, or magnetic rigidity, of a factor 15. Therefore, to accelerate protons from the 200 MeV Linac 4 to the 7 TeV it comes that a chain of at least 4 such synchrotrons is needed.
The injection and extraction of beams between accelerators are essential to achieve a wide range of energies and a beam specification.
This lecture presents injection and extraction techniques used for synchrotrons and across the CERN complex. [...]
2024 - 2646.
CAS - CERN Accelerator School; CAS course on Basics of Accelerator Physics and Technology, 11 - 15 March 2024, Ferney-Voltaire, France
External links: Talk details; Event details
In : CAS course on Basics of Accelerator Physics and Technology, 11 - 15 March 2024, Ferney-Voltaire, France
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4.
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An LWFA injector for AWAKE Run 2 experiment
/ Marini, Samuel (IRFU, Saclay, DACM) ; Minenna, Damien F G (IRFU, Saclay, DACM) ; Massimo, Francesco (LPGP, Orsay) ; Batista, Laury (IRFU, Saclay, DACM) ; Bencini, Vittorio (CERN) ; Chancé, Antoine (IRFU, Saclay, DACM) ; Chauvin, Nicolas (IRFU, Saclay, DACM) ; Doebert, Steffen (CERN) ; Farmer, John (Munich, Max Planck Inst.) ; Gschwendtner, Edda (CERN) et al.
A beam physics design has been carried out for a 200 MeV-LWFA injector to the AWAKE Run 2 experiment as an alternative to the reference RF injector. It is composed of a laser-plasma acceleration stage and a transport line. [...]
2024 - 3 p.
- Published in : JACoW IPAC 2024 (2024) MOPR38
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPR38
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Preparation for Realisation of External Electron Injection for AWAKE Run 2b
/ van Gils, Nikita (CERN ; Groningen U.) ; Turner, Marlene (CERN) ; Zevi Della Porta, Giovanni (CERN ; Munich, Max Planck Inst.) ; Bencini, Vittorio (CERN ; Oxford U.) ; Ranc, Lucas (Munich, Max Planck Inst.) ; Pannell, Fern (University Coll. London) ; Gerbershagen, Alexander (Groningen U.) ; Gschwendtner, Edda (CERN)
The Advanced Wakefield Experiment (AWAKE) aimsto accelerate electrons to particle physics relevant energiesusing self-modulated proton bunches as drivers in a singleplasma. AWAKE is now in its Run 2b (2023-2024), wherethe goal is to stabilise wakefields by using a plasma density step. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) MOPR42
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPR42
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Beam physics studies for a high charge and high beam quality laser-plasma accelerator
/ Marini, Samuel (IRFU, Saclay, DACM) ; Minenna, Damien F G (IRFU, Saclay, DACM) ; Massimo, Francesco (LPGP, Orsay) ; Batista, Laury (IRFU, Saclay, DACM) ; Bencini, Vittorio (CERN) ; Chancé, Antoine (IRFU, Saclay, DACM) ; Chauvin, Nicolas (IRFU, Saclay, DACM) ; Doebert, Steffen (CERN) ; Farmer, John (Munich, Max Planck Inst.) ; Gschwendtner, Edda (CERN) et al.
Electron acceleration by laser-plasma techniques is approaching maturity and is getting ready for the construction of particle accelerators with dedicated applications. We present a general methodology showing how beam physics studies can be used to achieve a specific parameter set in a laser-plasma accelerator. [...]
2024 - 15 p.
- Published in : Phys. Rev. Accel. Beams 27 (2024) 063401
Fulltext: PDF;
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8.
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Automating beam dump failure detection using computer vision
/ Huhn, Francisco (CERN) ; Goddard, Brennan (CERN) ; Velotti, Francesco (CERN) ; Bencini, Vittorio (CERN)
The CERN SPS Beam Dump System (SBDS) is responsible for disposing the beam in the SPS in case of any machine malfunctioning or end of cycled operation.This is achieved by the actuation of kicker magnets with predefined pulses, which aim to: i) deviate the beam towards the absorber block (TIDVG); ii) dilute the particle density. Evidently, a malfunction of this system may have negative consequences, such as the absorber block degrading if the beam is not sufficiently diluted, unwanted activation of the surroundings or even damage to the vacuum chamber in case of complete failure.By leveraging a combination of real images from a beam screen device and data from simulations, we train an online monitoring system to identify potential failures of the SBDS from real-time images. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPL017
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPL017
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9.
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Design of the new 18 MeV electron injection line for AWAKE Run2c
/ Bencini, Vittorio (CERN ; JAI, UK) ; Velotti, Francesco (CERN)
The Advanced Wakefield Experiment (AWAKE) has demonstrated during its first run (Run1, concluded in 2018) the capability of accelerating electrons up to the energy of 2 GeV using proton driven plasma wakefield acceleration. AWAKE Run 2 has started and during the third phase of the program, Run 2c, which aims to demonstrate stable accelerating gradients of 0.5-1 GV/m and emittance preservation of the electron bunches during acceleration, the layout of the experiment will be modified to accommodate a second plasma cell. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPA102
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA102
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10.
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Quasi-Alvarez drift-tube linac structures for heavy ion therapy accelerator facilities
/ Khalvati, Mohammad Reza (CERN ; IPM, Tehran) ; Bencini, Vittorio (CERN) ; Ramberger, Suitbert (CERN)
Next generation heavy ion therapy and research facilities require efficient accelerating structures. Particularly, at low beam energies, right after the standard scheme of the ion source, low-energy beam transfer, and radio-frequency quadrupole (RFQ), several options for accelerating structures are available including the classic drift-tube linac (DTL), the interdigital H-mode DTL (IH-DTL), and superconducting quarter-wave resonators. [...]
2023 - 14 p.
- Published in : Phys. Rev. Accel. Beams 26 (2023) 022001
Fulltext: PDF;
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