Demonstration of acceleration of relativistic electrons at a dielectric microstructure using femtosecond laser pulses

Wootton, Kent; Wu, Ziran; Cowan, B.; Hanuka, Adi; Makasyuk, Igor; Peralta, E. A.; Soong, K.; Byer, Robert L.; England, R. J.

doi:10.1364/ol.41.002696

Cited by 94 publications

(61 citation statements)

References 25 publications

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“…The optimization process developed predicts an unloaded gradient of ∼10 GV=m. This is one order of magnitude higher than previous experiments demonstrated [14,15].…”

Section: Introductioncontrasting

confidence: 56%

“…Thus, low loss dielectric materials are virtually the only alternative for an accelerating structure, regardless of whether the latter is used as an optical electron collider [6], a possible light source [7], or as a module for medical devices [8]. Throughout the years several dielectric structures have been proposed [9][10][11][12] and more recently experimental results were reported [13][14][15]. In all these configurations fluence damage [16] is a limiting factor, whereas in rf machines, breakdown at the metalvacuum interface is a critical impediment [17].…”

Section: Introductionmentioning

confidence: 99%

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Optimized operation of dielectric laser accelerators: Single bunch

Hanuka

Schächter

2018

Phys. Rev. Accel. Beams

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We introduce a general approach to determine the optimal charge, efficiency and gradient for laser driven accelerators in a self-consistent way. We propose a way to enhance the operational gradient of dielectric laser accelerators by leverage of beam-loading effect. While the latter may be detrimental from the perspective of the effective gradient experienced by the particles, it can be beneficial as the effective field experienced by the accelerating structure, is weaker. As a result, the constraint imposed by the damage threshold fluence is accordingly weakened and our self-consistent approach predicts permissible gradients of ∼10 GV=m, one order of magnitude higher than previously reported experimental results-with unbunched pulse of electrons. Our approach leads to maximum efficiency to occur for higher gradients as compared with a scenario in which the beam-loading effect on the material is ignored. In any case, maximum gradient does not occur for the same conditions that maximum efficiency does-a trade-off set of parameters is suggested.

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“…The optimization process developed predicts an unloaded gradient of ∼10 GV=m. This is one order of magnitude higher than previous experiments demonstrated [14,15].…”

Section: Introductioncontrasting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Optimized operation of dielectric laser accelerators: Single bunch

Hanuka

Schächter

2018

Phys. Rev. Accel. Beams

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“…K. Wootton of SLAC presented recent progress in which the groups experimentally demonstrated greater than 1.4 GV/m accelerating gradient, a newly established record. These high fields were obtained by applying an incident electric field of ~8 GV/m, at a laser wavelength of 800 nm, to a dual-grating silica structure [3]. This advance was made possible by using an ultrashort (42 fs) drive laser to obtain high intensities while remaining below the damage threshold of fused silica, and extends the previous work conducted at SLAC (demonstrated gradient of 690 MV/m).…”

Section: Dielectric Laser Accelerationmentioning

confidence: 57%

Summary report of working group 3: Laser and high-gradient structure-based acceleration

Andonian¹,

Simakov²

2017

AIP Conference Proceedings

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“…Demonstrations of practical structures that produce high gradient (690 MeV/m) [20] and staging demonstrations at 10 microns [21] and 0.8 microns [22] have begun to show the potential, but many issues remain to be addressed.…”

Section: Dielectric Laser Acceleration Randdmentioning

confidence: 99%

Roadmap to the Future

Colby

Len

2017

Reviews of Accelerator Science and Technology

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Most particle accelerators today are expensive devices found only in the largest laboratories, industries, and hospitals. Using techniques developed nearly a century ago, the limiting performance of these accelerators is often traceable to material limitations, power source capabilities, and the cost tolerance of the application. Advanced accelerator concepts a aim to increase the gradient of accelerators by orders of magnitude, using new power sources (e.g. lasers and relativistic beams) and new materials (e.g. dielectrics, metamaterials, and plasmas). Worldwide, research in this area has grown steadily in intensity since the 1980s, resulting in demonstrations of accelerating gradients that are orders of magnitude higher than for conventional techniques. While research is still in the early stages, these techniques have begun to demonstrate the potential to radically change accelerators, making them much more compact, and extending the reach of these tools of science into the angstrom and attosecond realms. Maturation of these techniques into robust, engineered devices will require sustained interdisciplinary, collaborative R&D and coherent use of test infrastructure worldwide. The outcome can potentially transform how accelerators are used.

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Demonstration of acceleration of relativistic electrons at a dielectric microstructure using femtosecond laser pulses

Cited by 94 publications

References 25 publications

Optimized operation of dielectric laser accelerators: Single bunch

Optimized operation of dielectric laser accelerators: Single bunch

Summary report of working group 3: Laser and high-gradient structure-based acceleration

Roadmap to the Future

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