Several  Techniques  on  Increasing  Computation Efficiency  of  Photon  Energy  Deposition

QIU  You-heng; YING  Yang-jun; WANG  Mi; CHEN  Xing-liang

doi:10.11804/NuclPhysRev.28.02.204

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Article Navigation > Nuclear Physics Review > 2011 > 28(2): 204-208

QIU You-heng, YING Yang-jun, WANG Mi, CHEN Xing-liang. Several Techniques on Increasing Computation Efficiency of Photon Energy Deposition[J]. Nuclear Physics Review, 2011, 28(2): 204-208. doi: 10.11804/NuclPhysRev.28.02.204

Citation:

QIU You-heng, YING Yang-jun, WANG Mi, CHEN Xing-liang. Several Techniques on Increasing Computation Efficiency of Photon Energy Deposition[J]. Nuclear Physics Review, 2011, 28(2): 204-208. doi: 10.11804/NuclPhysRev.28.02.204

Several Techniques on Increasing Computation Efficiency of Photon Energy Deposition

doi: 10.11804/NuclPhysRev.28.02.204

1 Institute of Applied Physics and Computational Mathematics, Beijing 100094, China 2 Graduate School of China Academy of Engineering Physics, Beijing 100088, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2011-06-20

Abstract

F6 and *F8 are two methods to calculate energy deposition of photon by MCNP program. If the dimension of grid is almost the same long as the range of secondary electron， the precision of *F8 is higher than that of F6， but the efficiency of F6 is greatly higher than that of *F8. This paper presents five techniques to increase the efficiency，namely: F6 is use to the model with grid dimension bigger than 10 ranges of secondary electron; combination of F6 and *F8; change the substeps of electron; turn off knock on electron; selfadaption cutoff secondary electron. The two techniques， combination of F6 and *F8，selfadaption cutoff secondary electron， can provide a good precision and efficiency.
- energy deposition,
- Xrays,
- MCNP,
- radiotherapy
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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

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Several Techniques on Increasing Computation Efficiency of Photon Energy Deposition

doi: 10.11804/NuclPhysRev.28.02.204

1 Institute of Applied Physics and Computational Mathematics, Beijing 100094, China 2 Graduate School of China Academy of Engineering Physics, Beijing 100088, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2011-06-20

Key words:

Abstract: F6 and *F8 are two methods to calculate energy deposition of photon by MCNP program. If the dimension of grid is almost the same long as the range of secondary electron， the precision of *F8 is higher than that of F6， but the efficiency of F6 is greatly higher than that of *F8. This paper presents five techniques to increase the efficiency，namely: F6 is use to the model with grid dimension bigger than 10 ranges of secondary electron; combination of F6 and *F8; change the substeps of electron; turn off knock on electron; selfadaption cutoff secondary electron. The two techniques， combination of F6 and *F8，selfadaption cutoff secondary electron， can provide a good precision and efficiency.

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