First application studies at the laser-driven LIGHT beamline: Improving proton beam homogeneity and imaging of a solid target

Jahn, D.; Schumacher, Dennis; Brabetz, C.; Ding, J.; Weih, Simon; Kroll, Florian; Brack, Florian‐Emanuel; Schramm, U.; Blažević, A.; Roth, Markus

doi:10.1016/j.nima.2018.02.026

Cited by 14 publications

(10 citation statements)

References 18 publications

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“…Here, the scintillator shows a depth dose distribution corresponding to a quasi-monoenergetic beam (FWHM energy spread about 10% to 15%), while with the RCFs a similar, yet larger focal shape is detected. This star-like focal spot shape has been observed at several laser facilities using different focusing solenoids 44,45,54 . Its non-trivial cause is currently under investigation using both laser-and conventional accelerators.…”

Section: Concept and Setup Of A Laser-driven Proton Beamline At Dracomentioning

confidence: 56%

“…In previous applications 14,18 , dedicated compact permanent quadrupole magnet assemblies 14,[40][41][42] were successfully applied, but may experience limitations in transmission efficiency due to the asymmetric focusing/defocusing characteristics in the transverse planes. The implementation of large aperture high-field solenoids, providing symmetric focusing conditions, has thus been discussed to circumvent this problem [43][44][45] .While field strengths of permanent magnets or direct current electromagnets are typically limited by saturation of the core materials to below two Tesla, non-destructive pulsed high-field magnets can provide up to several tens of Tesla. This tremendously reduces size and weight of the beamline structures 46 .…”

mentioning

confidence: 99%

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Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline

Brack

Kroll

Gaus

et al. 2020

Sci Rep

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Intense laser-driven proton pulses, inherently broadband and highly divergent, pose a challenge to established beamline concepts on the path to application-adapted irradiation field formation, particularly for 3D. Here we experimentally show the successful implementation of a highly efficient (50% transmission) and tuneable dual pulsed solenoid setup to generate a homogeneous (laterally and in depth) volumetric dose distribution (cylindrical volume of 5 mm diameter and depth) at a single pulse dose of 0.7 Gy via multi-energy slice selection from the broad input spectrum. The experiments were conducted at the Petawatt beam of the Dresden Laser Acceleration Source Draco and were aided by a predictive simulation model verified by proton transport studies. With the characterised beamline we investigated manipulation and matching of lateral and depth dose profiles to various desired applications and targets. Using an adapted dose profile, we performed a first proof-of-technical-concept laser-driven proton irradiation of volumetric in-vitro tumour tissue (SAS spheroids) to demonstrate concurrent operation of laser accelerator, beam shaping, dosimetry and irradiation procedure of volumetric biological samples.

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Section: Concept and Setup Of A Laser-driven Proton Beamline At Dracomentioning

confidence: 56%

mentioning

confidence: 99%

Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline

Brack

Kroll

Gaus

et al. 2020

Sci Rep

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“…Later on, various beamlines have been proposed at several institutes. For instance, the LIGHT beamline at GSI Helmholtz Center has demonstrated a multi-MeV proton beam with high peak intensity, sub nanosecond pulse duration (Busold and Schumacher 2015) and improved homogeneity (Jahn and Schumacher 2018). The ELI beamline installed in Prague uses magnet chicane as the energy selection unit, aiming to deliver controllable proton beam up to 60 MeV for therapeutic purposes (Romano and Schillaci 2016) Masood proposed a compact gantry design with pulsed magnets for the laser-driven proton radiotherapy (Masood and Cowan 2017).…”

Section: Introductionmentioning

confidence: 99%

Wakefield acceleration

Tajima

Yan

Ebisuzaki

2020

Rev. Mod. Plasma Phys.

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The fundamental idea of Laser Wakefield Acceleration (LWFA) is reviewed. An ultrafast intense laser pulse drives coherent wakefields of relativistic amplitude with the high phase velocity robustly supported by the plasma. The structures of wakes and sheaths in plasma are contrasted. While the large amplitude of wakefields involves collective resonant oscillations of the eigenmode of the entire plasma electrons, the wake phase velocity ~ c and ultrafastness of the laser pulse introduce the wake stability and rigidity. When the phase velocity gets smaller, wakefields turn into sheaths. When we deploy laser ion acceleration or high density LWFA in which the phase velocity of plasma excitation is low, we encounter the sheath dynamics. A large number of worldwide experiments show a rapid progress of this concept realization toward both the high energy accelerator prospect and broad applications. The strong interest in this has driven novel laser technologies, including the Chirped Pulse Amplification, the Thin Film Compression (TFC), the Coherent Amplification Network, and the Relativistic Compression (RC). These in turn have created a conglomerate of novel science and technology with LWFA to form a new genre of high field science with many parameters of merit in this field increasing exponentially lately. Applications such as ion acceleration, X-ray free electron laser, electron and ion cancer therapy are discussed. A new avenue of LWFA using nanomaterials is also emerging, adopting X-ray laser using the above TFC and RC. Meanwhile, we find evidence that the Mother Nature spontaneously created wakefields that accelerate electrons and ions to very high energies.

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“…Later on, various beam lines have been proposed at several institutes. For instance, the light beam line at GSI Helmholtz Center has demonstrated a multi-MeV proton beam with high peak intensity, subnanosecond pulse duration [32] and improved homogeneity [33]. The ELIMED beam line installed in Prague uses magnet chicane as the energy selection unit, aiming to deliver controllable proton beam up to 60 MeV for therapeutic purposes [34].…”

Section: Introductionmentioning

confidence: 99%

Experimental demonstration of a laser proton accelerator with accurate beam control through image-relaying transport

Zhu

Liao

et al. 2019

Phys. Rev. Accel. Beams

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A compact laser plasma accelerator (CLAPA) that can stably produce and transport proton ions with different energies less than 10 MeV, <1% energy spread, several to tens of pC charge, is demonstrated. The high current proton beam with continuous energy spectrum and a large divergence angle is generated by using a high contrast laser and micron thickness targets, which later is collected, analyzed and refocused by an image-relaying beam line using a combination of quadrupole and bending electromagnets. It eliminates the inherent defects of the laser-driven beams, realizes precise manipulation of the proton beams with reliability, availability, maintainability and inspectability (RAMI), and takes the first step towards applications of this new generation of accelerator. With the development of high-rep rate Petawatt (PW) laser technology, we can now envision a new generation of accelerator for many applications in the near future soon.

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First application studies at the laser-driven LIGHT beamline: Improving proton beam homogeneity and imaging of a solid target

Cited by 14 publications

References 18 publications

Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline

Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline

Wakefield acceleration

Experimental demonstration of a laser proton accelerator with accurate beam control through image-relaying transport

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