Beam manipulation with velocity bunching for PWFA applications

Pompili, R.; Anania, M. P.; Bellaveglia, M.; Biagioni, A.; Bisesto, F.; Chiadroni, E.; Cianchi, A.; Croia, M.; Curcio, A.; Giovenale, D. Di; Ferrario, M.; Filippi, F.; Galletti, Mario; Gallo, A.; Giribono, Anna; Li, W.; Marocchino, A.; Mostacci, A.; Petrarca, M.; Petrillo, V.; Pirro, G. Di; Romeo, S.; Rossi, A. R.; Scifo, J.; Shpakov, V.; Vaccarezza, C.; Villa, F.; Zhu, Jun

doi:10.1016/j.nima.2016.01.061

Cited by 42 publications

(27 citation statements)

References 35 publications

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“…A 'comb-like' configuration for the electron beam, consisting of a 200 pC driver followed by a 30 pC witness bunch generated through the so-called 'laser-comb technique' [15], has been explored aiming to optimise the witness parameters and to set the longitudinal distance between the two bunches at a desired value. Such operating mode enables the possibility to pilot a PWFA stage where the passage of an ultra-relativistic bunch of charged particles (the driver) through a plasma drives a charge density wake useful to accelerate the trailing bunch.…”

Section: Particle Driven Configuration: Wp4mentioning

confidence: 99%

EuPRAXIA@SPARC_LAB: The high-brightness RF photo-injector layout proposal

Giribono

Bacci

Chiadroni

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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At EuPRAXIA@SPARC LAB, the unique combination of an advanced high-brightness RF injector and a plasma-based accelerator will drive a new multi-disciplinary user-facility. The facility, that is currently under study at INFN-LNF Laboratories (Frascati, Italy) in synergy with the EuPRAXIA collaboration, will operate the plasma-based accelerator in the external injection configuration. Since in this configuration the stability and reproducibility of the acceleration process in the plasma stage is strongly influenced by the RF-generated electron beam, the main challenge for the RF injector design is related to generating and handling high quality electron beams. In the last decades of R&D activity, the crucial role of high-brightness RF photo-injectors in the fields of radiation generation and advanced acceleration schemes has been largely established, making them effective candidates to drive plasmabased accelerators as pilots for user facilities. An RF injector consisting in a high-brightness S-band photo-injector followed by an advanced X-band linac has been proposed for the EuPRAXIA@SPARC LAB project. The electron beam dynamics in the photoinjector has been explored by means of simulations, resulting in high-brightness, ultra-short bunches with up to 3 kA peak current at the entrance of the advanced X-band linac booster. The EuPRAXIA@SPARC LAB high-brightness photo-injector is described here together with performance optimisation and sensitivity studies aiming to actual check the robustness and reliability of the desired working point.

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Section: Particle Driven Configuration: Wp4mentioning

confidence: 99%

EuPRAXIA@SPARC_LAB: The high-brightness RF photo-injector layout proposal

Giribono

Bacci

Chiadroni

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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“…They are accelerated up to 5.3 MeV in the gun [25] and then injected into three S-band sections (called S1, S2 and S3 in the following). S1 is also used as RF-compressor by means of VB [26,27]. Solenoid coils embedding the first two sections can provide additional magnetic focusing during VB process and control of emittance and envelope oscillations [28].…”

Section: Photo-injectormentioning

confidence: 99%

Femtosecond timing-jitter between photo-cathode laser and ultra-short electron bunches by means of hybrid compression

et al. 2016

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The generation of ultra-short electron bunches with ultra-low timing-jitter relative to the photocathode (PC) laser has been experimentally proved for the first time at the SPARC_LAB test-facility (INFN-LNF, Frascati) exploiting a two-stage hybrid compression scheme. The first stage employs RFbased compression (velocity-bunching), which shortens the bunch and imprints an energy chirp on it. The second stage is performed in a non-isochronous dogleg line, where the compression is completed resulting in a final bunch duration below 90 fs (rms). At the same time, the beam arrival timing-jitter with respect to the PC laser has been measured to be lower than 20 fs (rms). The reported results have been validated with numerical simulations.

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“…It is well known that the momentum compaction of a magnetic lattice affects the arrival time jitter of the beam possibly leading to the compression or the compensation of the arrival time jitter [31][32][33].…”

Section: Compression Along the Dogleg Via Hybrid Velocity Bunchingmentioning

confidence: 99%

Electron-beam manipulation techniques in the SINBAD Linac for external injection in plasma wake-field acceleration

Marchetti

Assmann

Behrens

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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a b s t r a c tThe SINBAD facility (Short and INnovative Bunches and Accelerators at Desy) is foreseen to host various experiments in the field of production of ultra-short electron bunches and novel high gradient acceleration techniques. Besides studying novel acceleration techniques aiming to produce high brightness short electron bunches, the ARD group at DESY is working on the design of a conventional RF accelerator that will allow the production of low charge (0.5 pC -few pC) ultra-short electron bunches (having full width half maximum, FWHM, length r 1 fs -few fs). The setup will allow the direct experimental comparison of the performance achievable by using different compression techniques (velocity bunching, magnetic compression, hybrid compression schemes). At a later stage the SINBAD linac will be used to inject such electron bunches into a laser driven Plasma Wakefield Accelerator, which imposes strong requirements on parameters such as the arrival time jitter and the pointing stability of the beam. In this paper we review the compression techniques that are foreseen at SINBAD and we underline the differences in terms of peak current, beam quality and arrival time stability.

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Beam manipulation with velocity bunching for PWFA applications

Cited by 42 publications

References 35 publications

EuPRAXIA@SPARC_LAB: The high-brightness RF photo-injector layout proposal

EuPRAXIA@SPARC_LAB: The high-brightness RF photo-injector layout proposal

Femtosecond timing-jitter between photo-cathode laser and ultra-short electron bunches by means of hybrid compression

Electron-beam manipulation techniques in the SINBAD Linac for external injection in plasma wake-field acceleration

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