scholarly journals Proton beam deflection in MRI fields: Implications for MRI-guided proton therapy

2015 ◽  
Vol 42 (5) ◽  
pp. 2113-2124 ◽  
Author(s):  
B. M. Oborn ◽  
S. Dowdell ◽  
P. E. Metcalfe ◽  
S. Crozier ◽  
R. Mohan ◽  
...  
2015 ◽  
Vol 42 (6Part43) ◽  
pp. 3727-3727
Author(s):  
B Oborn ◽  
S Dowdell ◽  
P Metcalfe ◽  
S Crozier ◽  
R Mohan ◽  
...  

Author(s):  
Wenpeng Wang ◽  
Cheng Jiang ◽  
Shasha Li ◽  
Hao Dong ◽  
Baifei Shen ◽  
...  

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.


2018 ◽  
Vol 4 (3) ◽  
pp. 037001 ◽  
Author(s):  
J Hartman ◽  
X Zhang ◽  
X R Zhu ◽  
S J Frank ◽  
J J W Lagendijk ◽  
...  

2008 ◽  
Vol 35 (6Part15) ◽  
pp. 2811-2812 ◽  
Author(s):  
BW Raaymakers ◽  
AJE Raaijmakers ◽  
JJW Lagendijk

2012 ◽  
Vol 39 (6Part17) ◽  
pp. 3818-3818 ◽  
Author(s):  
V Moskvin ◽  
C Cheng ◽  
V Anferov ◽  
D Nichiporov ◽  
Q Zhao ◽  
...  

2015 ◽  
Vol 42 (6Part10) ◽  
pp. 3311-3311 ◽  
Author(s):  
JS Li
Keyword(s):  

Electronics ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 541 ◽  
Author(s):  
Pengyu Wang ◽  
Jinxing Zheng ◽  
Yuntao Song ◽  
Wuquan Zhang ◽  
Ming Wang

The purpose of this study is to provide an energy verification method for the nozzle of the SC200 proton therapy facility to ensure safe redundancy of treatment. This paper first introduces the composition of the energy selection system of the SC200 proton therapy facility. Secondly, according to IEC60601 standard, the energy verification requirement that correspond to 1 mm error in water is presented. The allowable difference between the measured magnetic field and the reference are calculated based on the energy verification requirements to select the field resolution of the Hall probe. To ensure accuracy and stability, two Hall probes are mounted on the dipole to monitor the magnetic field strength to verify the proton beam energy in real time. In addition, the test results of the residual field of the dipole show that the probe system meets the accuracy requirements of energy verification. Furthermore, the maximum width of the slit of the energy selection system in accordance with the IEC standard at the corresponding energy is calculated and compared with the actual position of the movable slit to verify the momentum divergence of the proton beam. Finally, we present an energy verification method.


Author(s):  
Rémi Dendale ◽  
Livia Lumbroso-Le Rouic ◽  
Georges Noel ◽  
Loïc Feuvret ◽  
Christine Levy ◽  
...  

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