Monte Carlo Evaluation for SSRF Beam Holes Shielding Neutrons of Front End Ratchet Walls

WANG Jian-Hua; XU Jia-Qiang; XU Xun-Jiang; CAI Jian-Hua; CAI-Jun; HUA Zheng-Dong; FANG Ke-Ming; LIU Xin

Chinese Physics C> 2008, Vol. 32> Issue(S1) : 105-108

Monte Carlo Evaluation for SSRF Beam Holes Shielding Neutrons of Front End Ratchet Walls

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Abstract：
This study investigated the characteristics of bremsstrahlung and induced neutrons from the electron storage ring in the Shanghai Synchrotron Radiation Facility (SSRF). The EGSnrc and MCNP Monte Carlo code has been used to perform the assess neutron and photon dose profiles for a variety of shield materials ranging from 5 to 115cm thick. The Monte Carlo simulations show that single material such as lead, iron and polyethylene have been found to be ineffective biological shield materials, while the mixed materials serve as effective shields for shielding high energy neutron. Mixed materials such as lead or iron combined with polyethylene or with concrete are good materials combination for high energy neutron radiation shield. And high-Z materials such as lead or iron combine with low-Z material containing some hydrogen such polyethylene are effective for shielding high energy neutrons as well as bremsstrahlung.

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WANG Jian-Hua, XU Jia-Qiang, XU Xun-Jiang, CAI Jian-Hua, CAI-Jun, HUA Zheng-Dong, FANG Ke-Ming and LIU Xin. Monte Carlo Evaluation for SSRF Beam Holes Shielding Neutrons of Front End Ratchet Walls[J]. Chinese Physics C, 2008, 32(S1): 105-108.

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Received: 2008-01-10
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Monte Carlo Evaluation for SSRF Beam Holes Shielding Neutrons of Front End Ratchet Walls

Corresponding author: WANG Jian-Hua,

Received Date: 2008-01-10
Accepted Date: 1900-01-01
Available Online: 2008-01-04

Abstract: This study investigated the characteristics of bremsstrahlung and induced neutrons from the electron storage ring in the Shanghai Synchrotron Radiation Facility (SSRF). The EGSnrc and MCNP Monte Carlo code has been used to perform the assess neutron and photon dose profiles for a variety of shield materials ranging from 5 to 115cm thick. The Monte Carlo simulations show that single material such as lead, iron and polyethylene have been found to be ineffective biological shield materials, while the mixed materials serve as effective shields for shielding high energy neutron. Mixed materials such as lead or iron combined with polyethylene or with concrete are good materials combination for high energy neutron radiation shield. And high-Z materials such as lead or iron combine with low-Z material containing some hydrogen such polyethylene are effective for shielding high energy neutrons as well as bremsstrahlung.