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CERN Document Server 10 записей найдено  Поиск длился 0.48 секунд. 
1.
Controlled Growth of the Self-Modulation of a Relativistic Proton Bunch in Plasma / AWAKE Collaboration
A long, narrow, relativistic charged particle bunch propagating in plasma is subject to the self-modulation (SM) instability. We show that SM of a proton bunch can be seeded by the wakefields driven by a preceding electron bunch. [...]
arXiv:2203.13752.- 2022-07-06 - 7 p. - Published in : Phys. Rev. Lett. 129 (2022) 024802 Fulltext: 2203.13752 - PDF; PhysRevLett.129.024802 - PDF;
2.
Simulation and Experimental Study of Proton Bunch Self-Modulation in Plasma with Linear Density Gradients / AWAKE Collaboration
We present numerical simulations and experimental results of the self-modulation of a long proton bunch in a plasma with linear density gradients along the beam path. Simulation results agree with the experimental results reported in arXiv:2007.14894v2: with negative gradients, the charge of the modulated bunch is lower than with positive gradients. [...]
arXiv:2107.11369.- 2021-10-01 - 13 p. - Published in : Phys. Rev. Accel. Beams 24 (2021) 101301 Fulltext: Publication - PDF; 2107.11369 - PDF; Fulltext from publisher: PDF;
3.
Transition between Instability and Seeded Self-Modulation of a Relativistic Particle Bunch in Plasma / AWAKE Collaboration
We use a relativistic ionization front to provide various initial transverse wakefield amplitudes for the self-modulation of a long proton bunch in plasma. We show experimentally that, with sufficient initial amplitude ($\ge(4.1\pm0.4)$ MV/m), the phase of the modulation along the bunch is reproducible from event to event, with 3 to 7% (of 2$\pi$) rms variations all along the bunch. [...]
arXiv:2012.09676.- 2021-04-21 - 6 p. - Published in : Phys. Rev. Lett. 126 (2021) 164802 Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF;
4.
Experimental study of extended timescale dynamics of a plasma wakefield driven by a self-modulated proton bunch / AWAKE Collaboration
Plasma wakefield dynamics over timescales up to 800 ps, approximately 100 plasma periods, are studied experimentally at the Advanced Wakefield Experiment (AWAKE). The development of the longitudinal wakefield amplitude driven by a self-modulated proton bunch is measured using the external injection of witness electrons that sample the fields. [...]
arXiv:2010.05715.- 2021-01-06 - 13 p. - Published in : Phys. Rev. Accel. Beams 24 (2021) 011301 Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF;
5.
Proton beam defocusing in AWAKE: comparison of simulations and measurements / AWAKE Collaboration
In 2017, AWAKE demonstrated the seeded self-modulation (SSM) of a 400 GeV proton beam from the Super Proton Synchrotron (SPS) at CERN. [...]
arXiv:2008.11392.
- 8 p.
Fulltext
6.
Experimental Study of Wakefields Driven by a Self-Modulating Proton Bunch in Plasma / AWAKE Collaboration
We study experimentally the longitudinal and transverse wakefields driven by a highly relativistic proton bunch during self-modulation in plasma. We show that the wakefields' growth and amplitude increases with increasing seed amplitude as well as with the proton bunch charge in the plasma. [...]
arXiv:2005.05277.- 2020-08-05 - 8 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 081302 Fulltext: PDF; Fulltext from Publisher: PDF;
7.
A magnetic spectrometer to measure electron bunches accelerated at AWAKE / AWAKE Collaboration
A magnetic spectrometer has been developed for the AWAKE experiment at CERN in order to measure the energy distribution of bunches of electrons accelerated in wakefields generated by proton bunches in plasma. AWAKE is a proof-of-principle experiment for proton-driven plasma wakefield acceleration, using proton bunches from the SPS. [...]
arXiv:1902.05752.- 2019-10-01 - 6 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 940 (2019) 103-108 Fulltext: PDF;
8.
Experimental observation of proton bunch modulation in a plasma, at varying plasma densities / AWAKE Collaboration
We give direct experimental evidence for the observation of the full transverse self-modulation of a relativistic proton bunch propagating through a dense plasma. The bunch exits the plasma with a density modulation resulting from radial wakefield effects with a period reciprocal to the plasma frequency. [...]
arXiv:1809.04478.- 2019-02-09 - 6 p. - Published in : Phys. Rev. Lett. 122 (2019) 054802 Fulltext: PDF; Fulltext from Publisher: PDF;
9.
Experimental observation of plasma wakefield growth driven by the seeded self-modulation of a proton bunch / AWAKE Collaboration
We measure the effects of transverse wakefields driven by a relativistic proton bunch in plasma with densities of $2.1\times10^{14}$ and $7.7\times10^{14}$ electrons/cm$^3$. We show that these wakefields periodically defocus the proton bunch itself, consistently with the development of the seeded self-modulation process. [...]
arXiv:1809.01191.- 2019-02-09 - 7 p. - Published in : Phys. Rev. Lett. 122 (2019) 054801 Fulltext: PDF; Fulltext from Publisher: PDF;
10.
AWAKE readiness for the study of the seeded self-modulation of a 400\,GeV proton bunch / AWAKE Collaboration
AWAKE is a proton-driven plasma wakefield acceleration experiment. % We show that the experimental setup briefly described here is ready for systematic study of the seeded self-modulation of the 400\,GeV proton bunch in the 10\,m-long rubidium plasma with density adjustable from 1 to 10$\times10^{14}$\,cm$^{-3}$ [...]
arXiv:1708.01087.- 2017-11-29 - 20 p.
- Published in : Comments Plasma Phys. Contr. Fusion: 60 (2018) , pp. 014046 Fulltext: PDF;
In : 44th European Physical Society Conference on Plasma Physics, Belfast, Ireland, 26 - 30 Jun 2017, pp.014046

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