Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2014, Vol. 25 ›› Issue (6): 060203 doi: 10.13538/j.1001-8042/nst.25.060203

• LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS • Previous Articles     Next Articles

Imaging principle and experiment results of an 11 MeV low-energy proton radiography system

LI Yi-Ding 1, ZHANG Xiao-Ding 1, WEI Tao 1, ZHAO Liang-Chao 1, HE Xiao-Zhong 1, MA Chao-Fan 1, YANG Guo-Jun 1, JIANG Xiao-Guo 1   

  1. 1Institute of Fluid Physics, CAEP, P. O. Box 919-106, Mianyang 621900, China
  • Contact: LI Yi-Ding E-mail:liyd@mail.ustc.edu.cn
  • Supported by:

    Supported by National Natural Science Foundation of China (Nos. 11205144 and 11176001)

LI Yi-Ding, ZHANG Xiao-Ding, WEI Tao, ZHAO Liang-Chao, HE Xiao-Zhong, MA Chao-Fan, YANG Guo-Jun, JIANG Xiao-Guo. Imaging principle and experiment results of an 11 MeV low-energy proton radiography system.Nuclear Science and Techniques, 2014, 25(6): 060203     doi: 10.13538/j.1001-8042/nst.25.060203

Abstract:

Differing from radiography without lens system, the high-energy proton radiography (PRAD) uses Zumbro lens system to focus the penetrating protons. Since the Zumbro lens system is able to limit the range of multiple Coulomb scattering angles of the protons, the low-energy PRAD with Zumbro lens system is also feasible, although the attenuation of probing protons in the object is negligible. Low-energy PRAD is superior to the high-energy PRAD for diagnosing the objects of small thicknesses. To verify the imaging principle of Zumbro lens system, 11MeV PRAD experiments were performed at the China Academy of Engineering Physics (CAEP) recently. The experiment results demonstrated that this 11MeV PRAD was able to radiograph objects of area density less than 2.7 ×10-2 g/cm2 and the area density discrepancy less than 2.3% could be distinguished.

Key words: Proton radiography, Multiple coulomb scattering, Zumbro lens system, Radiation length, Fourier plane