Measurement and Calculation of Photoneutrons Produced in the Electron Accelerator for Radiography Application

HUANG Wei-Ling; LI Quan-Feng; LIN Yu-Zheng; LUO Yi-Sheng

Chinese Physics C> 2006, Vol. 30> Issue(S1) : 63-65

Measurement and Calculation of Photoneutrons Produced in the Electron Accelerator for Radiography Application

Accelerator Lab, Department of Engineering Physics, Tsinghua University, Beijing 100084, China2 Institute of Military Medical Science, Beijing 100850, China

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Abstract：
Photoneutrons produced in the 15MeV electron accelerator for radiography application were measured and calculated. With passive methods of CR-39 and TE/C ion chamber, the photoneutron dose at the isocenter was 0.19mSv/Gy X-ray and 0.06mSv/Gy X-ray. For comparison, the whole accelerator system was simulated by Monte-Carlo method of MCNP5. The ratio or the neutron dose and the photon dose was 0.092mSv/Gy X-ray, less than the limited value of radiation protection standard. The results of the measurement and the calculation agreed well in the same order.

References

[1]

. Neutron Contamination from Medical Electron Accelera-tors, NCRP REPORT, No. 79. 1984. 1—82. Jao-Perng L, Chua T C, Lina S Y et al. Applied Radiationand Isotopes, 2001, 55: 315—3213. LIU J C, Nelson W R, MAO X S et al. Health Phys, 1997,72(4): 524—5294. Nuclear Radiation Measurement and Protection. WANGRu-Shan, ZHUO Yun-Shang. Beijing: Atomic EnergyPress. 1990. 20(in Chinese)(核辐射测量与防护.王汝赡，卓韵裳.北京:原子能出版社.1990, 20)

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HUANG Wei-Ling, LI Quan-Feng, LIN Yu-Zheng and LUO Yi-Sheng. Measurement and Calculation of Photoneutrons Produced in the Electron Accelerator for Radiography Application[J]. Chinese Physics C, 2006, 30(S1): 63-65.

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Received: 2005-12-07
Revised: 1900-01-01

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