Postacceleration of Laser-Generated High-Energy Protons Through Conventional Accelerator Linacs

Antici, P.; Fazi, M.; Lombardi, A.; Migliorati, M.; Palumbo, L.; Audebert, P.; Fuchs, Julien

doi:10.1109/tps.2008.2001412

Cited by 5 publications

(5 citation statements)

References 20 publications

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“…Increasing the laser energy and intensity on target will naturally lead to an increase of the energy of TNSA-driven particles, although reaching 100s of MeV energies may require large, multi-PW systems [16]. Increasing particle flux and energy by secondary methods, such as coupling laser-driven ions to conventional RF stages for post-acceleration and beam control [17] is an approach currently being explored, which however, is arguably less attractive than an all-optical approach. A novel technique for simultaneous focussing, energy selection and post-acceleration has been recently developed [18], which exploits the transient self-charging of solid targets irradiated by intense laser pulses.…”

Section: Introductionmentioning

confidence: 99%

Optimisation of laser driven proton beams by an innovative target scheme

Ahmed

Kar

Cantono³

et al. 2017

J. Inst.

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Proton beams driven by the target normal sheath acceleration mechanism exhibit large divergence and a broad energy distribution with low particle number at high energy. Such undesirable characteristics of the beam can be controlled and optimised by employing a recently developed helical coil technique, which exploits the transient self-charging of solid targets irradiated by intense laser pulses. Highly chromatic focusing of the broadband proton beams was achieved by employing this technique at the TARANIS laser system, where the selected energy slice was tuned by varying the pitch of the coil. A quasi-collimated, narrow energy band proton beam of ∼ 107 particles at 10 MeV was achieved, through a combination of focussing, energy selection and in-situ post-acceleration. This technique may provide a platform for a generation of compact, all-optical ion accelerators.

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Section: Introductionmentioning

confidence: 99%

Optimisation of laser driven proton beams by an innovative target scheme

Ahmed

Kar

Cantono³

et al. 2017

J. Inst.

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“…Furthermore, reaching high-energies (>100s MeV) as required by important accelerator applications (for instance, clinical proton therapy 5 6 7 ), will require, according to the current understanding of the acceleration mechanism 2 3 , significantly larger laser systems than affordable in many cases. Coupling laser-driven ions to conventional RF stages for post-acceleration and beam control 8 is an approach currently being explored, which however, is inherently less attractive than an all-optical approach in terms of both cost and compactness.…”

mentioning

confidence: 99%

Guided post-acceleration of laser-driven ions by a miniature modular structure

et al. 2016

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All-optical approaches to particle acceleration are currently attracting a significant research effort internationally. Although characterized by exceptional transverse and longitudinal emittance, laser-driven ion beams currently have limitations in terms of peak ion energy, bandwidth of the energy spectrum and beam divergence. Here we introduce the concept of a versatile, miniature linear accelerating module, which, by employing laser-excited electromagnetic pulses directed along a helical path surrounding the laser-accelerated ion beams, addresses these shortcomings simultaneously. In a proof-of-principle experiment on a university-scale system, we demonstrate post-acceleration of laser-driven protons from a flat foil at a rate of 0.5 GeV m−1, already beyond what can be sustained by conventional accelerator technologies, with dynamic beam collimation and energy selection. These results open up new opportunities for the development of extremely compact and cost-effective ion accelerators for both established and innovative applications.

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“…Although laser accelerated proton beams are broadband and possess large divergences, their pursuit is driven by their high yields (up to 10 13 protons per laser pulse) and their ultralow emittances (transversely 100-fold better and longitudinally at least 10 4 -fold better than conventional accelerators [2]). Possible applications may include a hybrid system that combines a laser accelerated source with a conventional postaccelerator [2][3][4][5][6] or a distantfuture laser accelerator with a compact and cost effective beam transport system for cancer therapy [2,[6][7][8][9]. Because TNSA results in a large diverging proton beam, both applications will require efficient capture and collimation by a focusing element such as a magnetic lens.…”

mentioning

confidence: 99%

Laser accelerated protons captured and transported by a pulse power solenoid

Burris-Mog

Harres

Nürnberg

et al. 2011

Phys. Rev. ST Accel. Beams

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Using a pulse power solenoid, we demonstrate efficient capture of laser accelerated proton beams and the ability to control their large divergence angles and broad energy range. Simulations using measured data for the input parameters give inference into the phase-space and transport efficiencies of the captured proton beams. We conclude with results from a feasibility study of a pulse power compact achromatic gantry concept. Using a scaled target normal sheath acceleration spectrum, we present simulation results of the available spectrum after transport through the gantry.

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Postacceleration of Laser-Generated High-Energy Protons Through Conventional Accelerator Linacs

Cited by 5 publications

References 20 publications

Optimisation of laser driven proton beams by an innovative target scheme

Optimisation of laser driven proton beams by an innovative target scheme

Guided post-acceleration of laser-driven ions by a miniature modular structure

Laser accelerated protons captured and transported by a pulse power solenoid

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