title: Demonstration of low energy proton radiography on an 11-MeV cyclotron.
abstract: Lens focused proton radiograph on thin objects is demonstrated using an 11-MeV proton cyclotron at China Academy of Engineering Physics. The proton beam exiting from the tested objects is focused onto the image plane by a magnetic lens system mitigating image blur caused by multiple Coulomb scattering. Both simulations and experiments show that clear images can be obtained with a lens system for the objects with thickness up to 2.7 × 10-2g/cm2and the error for the areal density measurement is measured to be less than 2.3%. For the objects with thickness between 2.7 × 10-3g/cm2and 2.7 × 10-2g/cm2, 100-200 μm of spatial resolution is achieved.
authors.affiliation: Institute of Fluid Physics, China Academy of Engineering Physics, P.O. Box 919-106, Mianyang 621900, China.
authors.forename: Xiao Ding
authors.initials: XD
authors.lastname: Zhang
authors.affiliation: Institute of Fluid Physics, China Academy of Engineering Physics, P.O. Box 919-106, Mianyang 621900, China.
authors.forename: Guo Jun
authors.initials: GJ
authors.lastname: Yang
authors.affiliation: Institute of Fluid Physics, China Academy of Engineering Physics, P.O. Box 919-106, Mianyang 621900, China.
authors.forename: Yi Ding
authors.initials: YD
authors.lastname: Li
authors.affiliation: Institute of Fluid Physics, China Academy of Engineering Physics, P.O. Box 919-106, Mianyang 621900, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Wei
authors.affiliation: Institute of Fluid Physics, China Academy of Engineering Physics, P.O. Box 919-106, Mianyang 621900, China.
authors.forename: Xiaozhong
authors.initials: X
authors.lastname: He
authors.affiliation: Institute of Fluid Physics, China Academy of Engineering Physics, P.O. Box 919-106, Mianyang 621900, China.
authors.forename: Liang Chao
authors.initials: LC
authors.lastname: Zhao
authors.affiliation: Institute of Fluid Physics, China Academy of Engineering Physics, P.O. Box 919-106, Mianyang 621900, China.
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Institute of Fluid Physics, China Academy of Engineering Physics, P.O. Box 919-106, Mianyang 621900, China.
authors.forename: Chaofan
authors.initials: C
authors.lastname: Ma
authors.affiliation: Institute of Fluid Physics, China Academy of Engineering Physics, P.O. Box 919-106, Mianyang 621900, China.
authors.forename: Xiaoguo
authors.initials: X
authors.lastname: Jiang
authors.affiliation: Institute of Fluid Physics, China Academy of Engineering Physics, P.O. Box 919-106, Mianyang 621900, China.
authors.forename: Jinshui
authors.initials: J
authors.lastname: Shi