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CERN Document Server 19 records found  1 - 10next  jump to record: Search took 0.61 seconds. 
1.
Measurement of the emittance of accelerated electron bunches at the AWAKE experiment / AWAKE Collaboration
The vertical plane transverse emittance of accelerated electron bunches at the AWAKE experiment at CERN has been determined, using three different methods of data analysis. [...]
arXiv:2411.08681. - 20.
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2.
Experimental Observation of Motion of Ions in a Resonantly Driven Plasma Wakefield Accelerator / AWAKE Collaboration
We show experimentally that an effect of motion of ions, observed in a plasma-based accelerator, depends inversely on the plasma ion mass. [...]
arXiv:2406.16361. - 9.
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3.
Filamentation of a Relativistic Proton Bunch in Plasma / AWAKE Collaboration
We show in experiments that a long, underdense, relativistic proton bunch propagating in plasma undergoes the oblique instability, that we observe as filamentation. We determine a threshold value for the ratio between the bunch transverse size and plasma skin depth for the instability to occur. [...]
arXiv:2312.13883.- 2024-05-07 - 8 p. - Published in : Phys. Rev. E 109 (2024) 055203 Fulltext: Publication - PDF; 2312.13883 - PDF; External link: Physics Synopsis
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4.
Generation of 10-m-lengthscale plasma columns by resonant and off-resonant laser pulses / Demeter, G. (Wigner RCP, Budapest) ; Moody, J.T. (Munich, Max Planck Inst.) ; Kedves, M.A. (Wigner RCP, Budapest) ; Batsch, F. (Munich, Max Planck Inst. ; CERN) ; Bergamaschi, M. (Munich, Max Planck Inst.) ; Fedosseev, V. (CERN) ; Granados, E. (CERN) ; Muggli, P. (Munich, Max Planck Inst.) ; Panuganti, H. (CERN) ; Della Porta, G. Zevi (Munich, Max Planck Inst. ; CERN)
Creating extended, highly homogeneous plasma columns like that required by plasma wakefield accelerators can be a challenge. [...]
arXiv:2302.07038. - 16 p.
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5.
Development of the Self-Modulation Instability of a Relativistic Proton Bunch in Plasma / AWAKE Collaboration
Self-modulation is a beam-plasma instability that is useful to drive large-amplitude wakefields with bunches much longer than the plasma skin depth. We present experimental results showing that, when increasing the ratio between the initial transverse size of the bunch and the plasma skin depth, the instability occurs later along the bunch, or not at all, over a fixed plasma length, because the amplitude of the initial wakefields decreases. [...]
arXiv:2305.05478.- 2023-08-01 - 10 p. - Published in : Phys. Plasmas 30 (2023) 083104 Fulltext: 2305.05478 - PDF; Publication - PDF;
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6.
Design and operation of transfer lines for plasma wakefield accelerators using numerical optimizers / Ramjiawan, R (CERN) ; Döbert, S (CERN) ; Farmer, J (CERN) ; Gschwendtner, E (CERN) ; Velotti, F M (CERN) ; Verra, L (CERN) ; Della Porta, G Zevi (CERN) ; Bencini, V (JAI, UK) ; Burrows, P N (JAI, UK)
The Advanced Wakefield (AWAKE) Experiment is a proof-of-principle experiment demonstrating the acceleration of electron beams via proton-driven plasma wakefield acceleration. AWAKE Run 2 aims to build on the results of Run 1 by achieving higher energies with an improved beam quality. [...]
2022 - 16 p. - Published in : Phys. Rev. Accel. Beams 25 (2022) 101602 Fulltext: PDF;
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7.
Towards automatic setup of 18 MeV electron beamline using machine learning / Velotti, Francesco Maria (CERN) ; Goddard, Brennan (CERN) ; Kain, Verena (CERN) ; Ramjiawan, Rebecca (CERN) ; Della Porta, Giovanni Zevi (CERN) ; Hirlaender, Simon (U. Salzburg (main))
To improve the performance-critical stability and brightness of the electron bunch at injection into the proton-driven plasma wakefield at the AWAKE CERN experiment, automation approaches based on unsupervised Machine Learning (ML) were developed and deployed. Numerical optimisers were tested together with different model-free reinforcement learning agents. [...]
arXiv:2209.03183.- 2023-04-27 - 18 p. - Published in : Mach. Learn. Sci. Tech. 4 (2023) 025016 Fulltext: document - PDF; 2209.03183 - PDF;
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8.
The AWAKE Run 2 programme and beyond / AWAKE Collaboration
Plasma wakefield acceleration is a promising technology to reduce the size of particle accelerators. Use of high energy protons to drive wakefields in plasma has been demonstrated during Run 1 of the AWAKE programme at CERN. [...]
arXiv:2206.06040.- 2022-08-12 - 21 p. - Published in : Symmetry 14 (2022) 1680 Fulltext: document - PDF; 2206.06040 - PDF;
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9.
Design of the AWAKE Run 2c transfer lines using numerical optimizers / Ramjiawan, Rebecca (CERN) ; Bencini, Vittorio (CERN) ; Doebert, Steffen (CERN) ; Farmer, John (CERN) ; Gschwendtner, Edda (CERN) ; Velotti, Francesco (CERN) ; Verra, Livio (CERN) ; Della Porta, Giovanni Zevi (CERN) ; Burrows, P. N. (JAI, UK)
The Advanced Wakefield (AWAKE) Experiment is a proof-of-principle experiment demonstrating the acceleration of electron beams via proton-driven plasma wakefield acceleration. [...]
arXiv:2203.01605. - 15 p.
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10.
Analysis of Proton Bunch Parameters in the AWAKE Experiment / AWAKE Collaboration
A precise characterization of the incoming proton bunch parameters is required to accurately simulate the self-modulation process in the Advanced Wakefield Experiment (AWAKE). This paper presents an analysis of the parameters of the incoming proton bunches used in the later stages of the AWAKE Run 1 data-taking period. [...]
arXiv:2109.12893.- 2021-11-24 - 14 p. - Published in : JINST 16 (2021) P11031 Fulltext: document - PDF; 2109.12893 - PDF;
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