Feng Chen, Hai-Bo Xu, Na Zheng, Qing-Gang Jia, Ruo-Gu She, Xing-E Li. Theoretical study of angle-cut collimator based design in high-energy proton radiography [J]. Acta Physica Sinica, 2020, 69(3): 032901-1
- Acta Physica Sinica
- Vol. 69, Issue 3, 032901-1 (2020)
Fig. 1. Schematic diagram of proton radiography system.质子成像系统示意图
Fig. 2. Shape changed of proton bunch within certain angle-cuts as it passes through the collimation space: (a) z = 0 m; (b) z = 0.6 m; (c) z = 1.2 m; (d) z = 1.8 m; (e) z = 2.4 m.
一定截断角以内的质子束团在通过准直空间时的形状变化 (a) z = 0 m; (b) z = 0.6 m; (c) z = 1.2 m; (d) z = 1.8 m; (e) z = 2.4 m
Fig. 3. Diagram of parameters of proton radiography system.质子成像系统参数示意图
Fig. 4. Boundary lines of the target bunch when the angle-cut is 2 mrad and the object size is 5 cm.截断角为2 mrad、客体尺寸为5 cm时的目标束团边界线
Fig. 5. Aperture size varies with the angle-cut at the ports: (a)
; (b)
.
端口处的孔径值随截断角的变化 (a)
; (b)
Fig. 6. Shape of aperture of the collimator: (a) x-y plane; (b) y-z plane.
准直器孔径的形状 (a) x-y 平面; (b) y-z 平面
Fig. 7. Diagram of the object: (a) The round copper plate; (b) the concentric spheres.客体示意图 (a)铜板; (b)同心球体
Fig. 8. Flux distribution after passing the round copper plate: (a) Angle-cut of 2 mrad; (b) angle-cut of 3.5 mrad.通过铜板的通量分布 (a)截断角为2 mrad; (b)截断角为3.5 mrad
Fig. 9. Flux distribution after passing the concentric spheres: (a) Angle-cut of 2 mrad; (b) angle-cut of 3.5 mrad.通过同心球的通量分布 (a)截断角为2 mrad; (b)截断角为3.5 mrad
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Table 1. Parameters of the proton radiography system of 1.6 GeV.
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Table 2.
Aperture parameters of the collimator.
准直器的孔径参数
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