Velocity bunching of high-brightness electron beams

Anderson, S. G.; Musumeci, P.; Rosenzweig, James; Brown, W.; England, R. J.; Ferrario, M.; Jacob, J.; Thompson, M. C.; Travish, G.; Tremaine, A.; Yoder, R. B.

doi:10.1103/physrevstab.8.014401

Cited by 69 publications

(41 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, it has been demonstrated that it is possible to generate tunable, narrowband, few-cycle, and multicycle coherent THz radiation by properly shaping the longitudinal charge distribution of the electron beam. Different approaches are currently used: a temporally shaped photocathode drive laser pulse, 16, 17 a mask in a high dispersion, low beta function region of a beamline dogleg in order to produce a temporal bunch train out of a long bunch with a correlated energy spread, 18 a transversely segmented beam (with a multislit mask) manipulated via a transverse-to-longitudinal phase space exchange technique, 19 and an ultra-short relativistic electron bunch passing through a magnetic undulator. 20 For instance, molecular spectroscopy and imaging can benefit from a high peak power, tunable THz radiation with narrow spectral bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the THz radiation source at the Frascati linear accelerator

Chiadroni

Bellaveglia

Calvani

et al. 2013

Review of Scientific Instruments

Self Cite

View full text Add to dashboard Cite

Material selection considerations for coaxial, ferrimagnetic-based nonlinear transmission lines J. Appl. Phys. 113, 064904 (2013) Graphene on boron nitride microwave transistors driven by graphene nanoribbon back-gates Appl. Phys. Lett. 102, 033505 (2013) Millimeter scale electrostatic mirror with sub-wavelength holes for terahertz wave scanning Appl. Phys. Lett. 102, 031111 (2013) Leaky and bound modes in terahertz metasurfaces made of transmission-line metamaterials J. Appl. Phys. 113, 033105 (2013) Additional information on Rev. Sci. Instrum. The linac driven coherent THz radiation source at the SPARC-LAB test facility is able to deliver broadband THz pulses with femtosecond shaping. In addition, high peak power, narrow spectral bandwidth THz radiation can be also generated, taking advantage of advanced electron beam manipulation techniques, able to generate an adjustable train of electron bunches with a sub-picosecond length and with sub-picosecond spacing. The paper reports on the manipulation, characterization, and transport of the electron beam in the bending line transporting the beam down to the THz station, where different coherent transition radiation spectra have been measured and studied with the aim to optimize the THz radiation performances.

show abstract

Section: Introductionmentioning

confidence: 99%

Characterization of the THz radiation source at the Frascati linear accelerator

Chiadroni

Bellaveglia

Calvani

et al. 2013

Review of Scientific Instruments

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the longitudinal plane, the compression is limited by the nonlinearities of the RF curvature [20], by the initial uncorrelated energy spread of the beam and by the necessity of avoiding the cross-over of the longitudinal slices which immediately would spoil the longitudinal emittance of the beam.…”

Section: Compression Via 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:

View full text Add to dashboard Cite

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.

show abstract

“…If the beam is transversely focused while its energy is still relatively low, the space charge effect limits the final minimum achievable bunch duration. On the other hand, if the bunch is focused too late, i.e., the compression takes place with negligible longitudinal space charge force, the longitudinal slices of the bunch "cross-over", provoking a deterioration of the transverse phase space [56], as shown in Figure 3. A numerical approach to control the bunch density versus the bunch energy gain in the RF-compressor has been proposed in [57].…”

Section: Rf Compression Via Velocity Bunchingmentioning

confidence: 99%

Conceptual and Technical Design Aspects of Accelerators for External Injection in LWFA

et al. 2018

View full text Add to dashboard Cite

Laser driven Wake-Field Acceleration (LWFA) has proven its capability of accelerating electron bunches (e-bunches) to up to 4 GeV energy in a single stage while reaching gradients up to hundreds of GV/m. Because of the short period of the accelerating field (typically ranging from 100 fs to 1 ps duration) and the requirement of extremely small beam size (typically smaller than 1 µm) to match the channel, e-bunches can reach extremely high densities. They can be either extracted directly from the plasma or externally injected. The study of the external injection is interesting for two main reasons. On the one hand this method allows better control of the quality of the input beam and on the other hand it is in general necessary when a staged approach of the accelerator is considered. The interest in producing, characterizing and transporting high brightness ultra-short e-bunches has grown together with the interest in LWFA and other novel high-gradient acceleration techniques. In this paper we will review the principal techniques for producing and shaping ultra-short electron bunches with the example of the SINBAD-ARES (Accelerator Research Experiment at SINBAD) linac at the Deutsches Elektronen-Synchrotron (DESY). Our goal is to show how the design of the SINBAD-ARES linac satisfies the requirements for generating high brightness LWFA probes. In the last part of the paper we shall also comment on the technical challenges for electron control and characterization.

show abstract

Velocity bunching of high-brightness electron beams

Cited by 69 publications

References 23 publications

Characterization of the THz radiation source at the Frascati linear accelerator

Characterization of the THz radiation source at the Frascati linear accelerator

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

Conceptual and Technical Design Aspects of Accelerators for External Injection in LWFA

Contact Info

Product

Resources

About