Monte Carlo Method for Calculating the Skyshine of Electron Accelerator Shielding Room

KONG Chao-Cheng; LI Quan-Feng; DU Tai-Bin; CHENG Cheng; CHEN Huai-Bi; TANG Chuan-Xiang; ZHU Li; PEI Zhi-Gang; MING Shen-Jin; ZHANG Hui

Chinese Physics C> 2004, Vol. 28> Issue(4) : 431-436

Monte Carlo Method for Calculating the Skyshine of Electron Accelerator Shielding Room

Department of Engineering Physics,Tsinghua University,Beijing 100084,China2 Laboratory of Radiation Protection and Environmental Protection,Tsinghua University,Beijing 100084,China

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Abstract：
Using the Monte Carlo code MCNP4B, skyshine of 9MeV electron linear accelerator was calculated with a multi-step method combining the split and roulette variance reduction technique. Dose distribution of the skyshine was measured around the accelerator room. Results of the Monte Carlo simulation, empirical formulas and dosimetric measurement were compared and analyzed. In conclusion, the dosimetric measurement agrees with the results computed by Monte Carlo method reasonably, but deviates with computational results from empirical formulas. It shows that Monte Carlo method is a good way to analyze skyshine.

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[1]

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KONG Chao-Cheng, LI Quan-Feng, DU Tai-Bin, CHENG Cheng, CHEN Huai-Bi, TANG Chuan-Xiang, ZHU Li, PEI Zhi-Gang, MING Shen-Jin and ZHANG Hui. Monte Carlo Method for Calculating the Skyshine of Electron Accelerator Shielding Room[J]. Chinese Physics C, 2004, 28(4): 431-436.

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Received: 2003-07-21
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Monte Carlo Method for Calculating the Skyshine of Electron Accelerator Shielding Room

Corresponding author: KONG Chao-Cheng,

Department of Engineering Physics,Tsinghua University,Beijing 100084,China2 Laboratory of Radiation Protection and Environmental Protection,Tsinghua University,Beijing 100084,China

Received Date: 2003-07-21

Accepted Date: 1900-01-01

Available Online: 2004-04-05

Abstract: Using the Monte Carlo code MCNP4B, skyshine of 9MeV electron linear accelerator was calculated with a multi-step method combining the split and roulette variance reduction technique. Dose distribution of the skyshine was measured around the accelerator room. Results of the Monte Carlo simulation, empirical formulas and dosimetric measurement were compared and analyzed. In conclusion, the dosimetric measurement agrees with the results computed by Monte Carlo method reasonably, but deviates with computational results from empirical formulas. It shows that Monte Carlo method is a good way to analyze skyshine.

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Monte Carlo Method for Calculating the Skyshine of Electron Accelerator Shielding Room

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