Proton beam quality enhancement beyond the 60 MeV energy level by active control of temporal properties of the Draco PW laser

2021 ◽  
Author(s):  
Karl Zeil ◽  
Constantin Bernert ◽  
Florian-Emanuel Brack ◽  
Marco Garten ◽  
Lennart Gaus ◽  
...  
Keyword(s):  
Energy Level ◽  
Proton Beam ◽  
Active Control ◽  
Beam Quality ◽  
Quality Enhancement ◽  
Temporal Properties

scholarly journals Monoenergetic proton beam accelerated by single reflection mechanism only during hole-boring stage

2019 ◽  
Vol 7 ◽  
Author(s):  
Wenpeng Wang ◽  
Cheng Jiang ◽  
Shasha Li ◽  
Hao Dong ◽  
Baifei Shen ◽  
...  
Keyword(s):  
Proton Beam ◽  
Radiation Pressure ◽  
Proton Therapy ◽  
Beam Quality ◽  
Acceleration Process ◽  
Carbon Ions ◽  
Triple Layer ◽  
Rear Part ◽  
Beam Instabilities ◽  
Sharp Front

Multidimensional instabilities always develop with time during the process of radiation pressure acceleration, and are detrimental to the generation of monoenergetic proton beams. In this paper, a sharp-front laser is proposed to irradiate a triple-layer target (the proton layer is set between two carbon ion layers) and studied in theory and simulations. It is found that the thin proton layer can be accelerated once to hundreds of MeV with monoenergetic spectra only during the hole-boring (HB) stage. The carbon ions move behind the proton layer in the light-sail (LS) stage, which can shield any further interaction between the rear part of the laser and the proton layer. In this way, proton beam instabilities can be reduced to a certain extent during the entire acceleration process. It is hoped such a mechanism can provide a feasible way to improve the beam quality for proton therapy and other applications.

Beam quality enhancement for a radio-frequency excited annular CO2 laser

1998 ◽  
Vol 73 (18) ◽  
pp. 2549-2551 ◽  
Author(s):  
A. Lapucci ◽  
M. Ciofini ◽  
S. Mascalchi ◽  
E. Di Fabrizio ◽  
M. Gentili
Keyword(s):  
Radio Frequency ◽  
Co2 Laser ◽  
Beam Quality ◽  
Quality Enhancement

Beam quality active control of a slab MOPA solid state laser

2015 ◽  
Author(s):  
Rujian Xiang ◽  
Kai Zhang ◽  
Jing Wu ◽  
Yinglei Du ◽  
Zhongxiang Luo ◽  
...  
Keyword(s):  
Solid State ◽  
Active Control ◽  
Beam Quality ◽  
Solid State Laser ◽  
State Laser

Improve beam quality of laser proton acceleration with funnel-shaped-hole target

2016 ◽  
Vol 30 (08) ◽  
pp. 1650045 ◽  
Author(s):  
Peng Yang ◽  
Da Peng Fan ◽  
Yu Xiao Li
Keyword(s):  
Proton Beam ◽  
Short Pulse ◽  
Beam Quality ◽  
Rear Surface ◽  
Beam Divergence ◽  
Optimal Size ◽  
Proton Acceleration ◽  
Shaped Hole ◽  
Laser Proton Acceleration

Improve beam quality of laser proton acceleration using a funnel-shaped-hole target is demonstrated through particle simulations. When an intense short pulse laser illuminates a thin foil target with a hole at the rear surface, the proton beam divergence is suppressed compared with that obtained in a traditional flat target. In this paper, a funnel-shaped-hole target is proposed to improve the proton beam quality. Using two-dimensional particle-in-cell (PIC) simulations, three different shapes of target (funnel-shaped-hole target, cylinder-shaped-hole target and flat target) are simulated and compared. The funnel-shaped hole in the rear surface of the target helps to focus the electron cloud significantly and improve the maximum proton energy and suppress the proton beam divergence. Different thicknesses of the new target are also simulated, and the effects of thickness on the divergence angle and proton spectra are investigated. The optimal size of the new target is obtained and the quality of the proton beam is improved significantly. The funnel-shaped-hole target serves as a new method to improve the proton beam quality in laser–plasma interactions.

SU-GG-T-460: Liquid Scintillator Dosimetry for Passive Scattering Proton Beam Quality Assurance

2010 ◽  
Vol 37 (6Part23) ◽  
pp. 3292-3292
Author(s):  
D Robertson ◽  
F Poenisch ◽  
L Archambault ◽  
N Sahoo ◽  
M Gillin ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Proton Beam ◽  
Liquid Scintillator ◽  
Beam Quality ◽  
Passive Scattering

scholarly journals Improvement of proton beam quality by an optimized dragging field generated by the ultraintense laser interactions with a complex double-layer target

2016 ◽  
Vol 34 (3) ◽  
pp. 562-566 ◽  
Author(s):  
F. J. Wu ◽  
L. Q. Shan ◽  
W. M. Zhou ◽  
T. Duan ◽  
Y. L. Ji ◽  
...  
Keyword(s):  
Proton Beam ◽  
Double Layer ◽  
Beam Quality ◽  
Average Energy ◽  
Thin Foil ◽  
Pure Hydrogen ◽  
Carbon Ions ◽  
One Dimensional ◽  
Particle In Cell ◽  
Underdense Plasma

AbstractA scheme for the improvement of proton beam quality by the optimized dragging field from the interaction of ultraintense laser pulse with a complex double-layer target is proposed and demonstrated by one-dimensional particle-in-cell (Opic1D) simulations. The complex double-layer target consists of an overdense proton thin foil followed by a mixed hydrocarbon (CH) underdense plasma. Because of the existence of carbon ions, the dragging field in the mixed CH underdense plasma becomes stronger and flatter in the location of the proton beam than that in a pure hydrogen (H) underdense plasma. The optimized dragging field can keep trapping and accelerating protons in the mixed CH underdense target to high quality. Consequently, the energy spread of the proton beam in the mixed CH underdense plasma can be greatly reduced down to 2.6% and average energy of protons can reach to 9 GeV with circularly polarized lasers at intensities 2.74 × 1022 W/cm2.

scholarly journals Ion Source Optimisation for Proton Beam Quality of the Van De Graaff Accelerator at iThemba LABS for Ion Beam Analysis

2013 ◽  
Vol 03 (03) ◽  
pp. 83-86
Author(s):  
M. E. M. Eisa ◽  
J. L. Conradie ◽  
P. J. Celliers ◽  
J. L. G. Delsink ◽  
D. T. Fourie ◽  
...  
Keyword(s):  
Proton Beam ◽  
Beam Quality ◽  
Ion Beam ◽  
Ion Source ◽  
Ion Beam Analysis ◽  
Graaff Accelerator ◽  
Beam Analysis ◽  
Van De Graaff
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