Stable Charged-Particle Acceleration and Focusing in a Laser Accelerator Using Spatial Harmonics

Naranjo, Brian; Valloni, Alessandra; Putterman, Seth; Rosenzweig, James

doi:10.1103/physrevlett.109.164803

Cited by 102 publications

(97 citation statements)

References 15 publications

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“…This argues for a distributed coupling and/or very short and efficient coupler designs. The reader should keep in mind that structures that use soft confinement, such as those fed by parallel channels (Naranjo et al, 2012) and the phase reset type structures discussed in Section III.A, do not obey the laws for group velocity presented above. In fact these structures were invented to avoid the limitations posed by these typical waveguide structures.…”

Section: General Laws For Accelerating Modesmentioning

confidence: 99%

“…It has recently been proposed to utilize the nonresonant spatial harmonics of a periodic DLA structure, as shown in Figure 4 (Naranjo et al, 2012), which give alternating gradient fields that provide secondorder focusing (Reiche, 1997;Rosenzweig and Serafini, 1994). The second-order effect generally produces focusing associated with the n-th harmonic proportional…”

Section: Transverse Dynamicsmentioning

confidence: 99%

“…However, in order to attain efficient acceleration that is scalable to high energies, it is necessary to take advantage of the high laser damage thresholds and low ohmic losses of dielectric materials. To these ends, a variety of all-dielectric high-gradient laser-accelerator structures have been proposed in recent years (Cowan, 2008;Lin, 2001;Mizrahi and Schachter, 2004a;Naranjo et al, 2012;Plettner et al, 2006). Significant progress in the communication industry for high-power solid-state lasers, optical fibers, and photo-lithographic techniques developed by the semi-conductor industry have enabled the first of these dielectric laser accelerator prototypes to be fabricated at the micron scale and tested with particle beams, leading to the first high-gradient demonstrations of laser acceleration in these devices (Peralta et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dielectric laser accelerators

England¹,

Noble²,

Bane³

et al. 2014

Rev. Mod. Phys.

332

184

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The use of infrared lasers to power optical-scale lithographically fabricated particle accelerators is a developing area of research that has garnered increasing interest in recent years. We review the physics and technology of this approach, which we refer to as dielectric laser acceleration (DLA). In the DLA scheme operating at typical laser pulse lengths of 0.1 to 1 ps, the laser damage fluences for robust dielectric materials correspond to peak surface electric fields in the GV/m regime. The corresponding accelerating field enhancement represents a potential reduction in active length of the accelerator between 1 and 2 orders of magnitude. Power sources for DLA-based accelerators (lasers) are less costly than microwave sources (klystrons) for equivalent average power levels due to wider availability and private sector investment. Due to the high laser-to-particle coupling efficiency, required pulse energies are consistent with tabletop microJoule class lasers. Combined with the very high (MHz) repetition rates these lasers can provide, the DLA approach appears promising for a variety of applications, including future high energy physics colliders, compact light sources, and portable medical scanners and radiative therapy machines.

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Section: General Laws For Accelerating Modesmentioning

confidence: 99%

Section: Transverse Dynamicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dielectric laser accelerators

England¹,

Noble²,

Bane³

et al. 2014

Rev. Mod. Phys.

332

184

View full text Add to dashboard Cite

show abstract

“…A focusing method of this type is ideal, from the perspective of making a truly integrated DLA accelerator, owing to its compactness, laser-driven compatibility, and amenability to integrated nanofabrication. In previous work, several focusing structures have been proposed based on laser-driven structures [6,7,8] and ponderomotive focusing [9]. In this work, a new laser-driven dielectric focusing structure is proposed.…”

Section: Introductionmentioning

confidence: 99%

Dielectric laser acceleration and focusing using short-pulse lasers with an arbitrary laser phase distribution

Wootton¹,

Cesar²,

Lee³

et al. 2017

AIP Conference Proceedings

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Abstract. Femtosecond laser pulses can be used to achieve desired GV m −1 electron accelerating gradients in dielectric laser accelerator structures. Extending this interaction over a distance exceeding 1 mm may require the use of focusing structures. Using simulations, we motivate a new dielectric laser focusing structure driven by short laser pulses. In contrast to previous dielectric laser accelerator microstructures, the surface of this structure has three heights. Using simulation, we show that this structure has a peak focusing field gradient equivalent to 2.9 MT m −1 .

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“…In plasma wakefield accelerator applications, matching the beam to the extreme strong focusing of a plasma channel necessitates very small spots at injection [11,12] using very strong, very short focal length quadrupoles, and the large angular divergence leaving the laser plasma wakefield accelerator necessitates high-gradient focusing over a short distance to minimize bunch elongation and retain high peak current [13]. In multistage laser-dielectric accelerator and undulator structures, strong magnetic optics matched in size-scale to the sub-mm accelerator or undulator gap are required to realize a full scale demonstration of a light source system [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

High-gradient microelectromechanical system quadrupole electromagnets for particle beam focusing and steering

Harrison

Hwang

Paydar

et al. 2015

Phys. Rev. ST Accel. Beams

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Recent advancements in microelectromechanical system (MEMS) fabrication techniques have enabled the batch-fabrication of quadrupole MEMS electromagnets producing 100 mT-scale field across sub-mm gaps with the potential for transformational advances in the field of compact high performance charged particle focusing and steering optics. The footprint of these in-vacuum focusing and steering optics can be as small as 3 mm × 3 mm × 0.5 mm. The low electromagnet impedance (58 mΩ, 32 nH per pole) facilitates power-efficient operation and continuous or low duty cycle operation, and the individually controlled electromagnets allow combined dipole-quadrupole fields. Here we report on an experiment where these miniature devices have been used to focus and steer a 34 keV electron beam from a DC photogun, demonstrating the first application of magnetic MEMS to particle beam focusing.

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Stable Charged-Particle Acceleration and Focusing in a Laser Accelerator Using Spatial Harmonics

Cited by 102 publications

References 15 publications

Dielectric laser accelerators

Dielectric laser accelerators

Dielectric laser acceleration and focusing using short-pulse lasers with an arbitrary laser phase distribution

High-gradient microelectromechanical system quadrupole electromagnets for particle beam focusing and steering

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