Development of Heavy Ion Transport Monte Carlo Code

Iwase, Hiroshi; Kurosawa, Tadahiro; Nakamura, Takashi; Yoshizawa, Nobuaki; Funabiki, Jun

doi:10.1007/978-3-642-18211-2_156

Cited by 19 publications

(24 citation statements)

References 5 publications

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“…Again a good agreement with the earlier work is seen. As it was mentioned earlier in the case of thick targets, PHITS [4] gives reasonable results both for 17 N and 87,88 Br, while MCNPX can be trusted only for 87,88 Br (see figure 6). It is worth mentioning that 17 N and 88 Br cross sections reported here have been measured for the first time for 1 GeV protons both for the nat Pb and Bi targets.…”

Section: Discussionsupporting

confidence: 64%

“…Some comparisons of the data have also been made with PHITS code predictions (NMTC+JAM+GEM) [4] and prove that this code can reproduce rather accurately the formation of DN precursors in high energy spallation-fission reactions (see the same figure 4) -in most of the cases within a factor 2 or better.…”

Section: Discussionmentioning

confidence: 78%

“…Here we present our results from the analysis of the DN yields and time spectra from 1 GeV protons interacting with thick nat Fe, nat Pb and 209 Bi targets. Corresponding calculations with MCNPX [2] and PHITS [4] codes were also performed leading to some recommendations related to the use of these tools. We note that the data obtained with thick and thin nat Pb targets were already partially reported in [5].…”

Section: Introductionmentioning

confidence: 99%

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Measurements of delayed neutrons yields and time spectra from 1 GeV protons interacting with thick ^natPb, ²⁰⁹Bi and ^natFe targets

Ridikas

Barzakh

Blidéanu

et al. 2007

Nd2007

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Abstract. This paper presents the experimental results on the DN yields and time spectra from 1 GeV protons interacting with the nat Pb, 209 Bi and nat Fe targets of variable thicknesses from 5 cm to 55 cm. Both absolute yields and time constants were obtained. In parallel, the MCNPX and PHITS codes were used to predict the DN precursors and construct the theoretical DN tables. Different model parameters are examined and show significant dependence on the choice of the intra-nuclear cascade and fission-evaporation models used. These data and modelling are of great importance for the new generation spallation neutron sources based on liquid metal technologies. Finally, the above experiment allowed the determination of the production cross sections of a number of DN precursors as, 87 Br, 88 Br and 17 N. These results permit the examination of two different reaction mechanisms, namely fission and fragmentation, implemented in high energy transport codes.

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Section: Discussionsupporting

confidence: 64%

Section: Discussionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

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Measurements of delayed neutrons yields and time spectra from 1 GeV protons interacting with thick ^natPb, ²⁰⁹Bi and ^natFe targets

Ridikas

Barzakh

Blidéanu

et al. 2007

Nd2007

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“…The Particle and Heavy Ion Transport code System (PHITS) 14) was utilized to simulate exposure conditions in CT examinations. In this work, three source models were defined with a subroutine of 'usrsors' in PHITS.…”

Section: Source Models In Ct Examinationmentioning

confidence: 99%

Analysis of Organ Doses from Computed Tomography (CT) Examination by the Radiation Transport Calculation to Develop the Dosimetry System, WAZA-ARI

Takahashi

Endo

Sato

et al. 2011

Progress in Nuclear Science and Technology

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A new dosimetry system, named WAZA-ARI, is being developed to assess organ doses of a patient in a Computed Tomography (CT) examination. A Japanese adult male voxel phantom (JM phantom) is applied to derive the basic data for dose assessment in WAZA-ARI. The JM phantom defines outer and inner configurations of the human body more precisely than mathematical human models, such as the MIRD-type phantom. The radiation transport in CT examination was simulated with the Particle and Heavy Ion Transport code System, PHITS. A subroutine in PHITS described a source model to simulate emission of photons in a CT machine. This study clarified the relationships between the organ doses and X-ray scanning on a human body with some geometrical conditions.

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“…By using the beam profiles mentioned above, the particle transport analysis was performed for protons and neutrons. The flux distributions of protons and neutrons above 10 MeV were calculated using the PHITS code, 9) which is a generalpurpose particle and heavy ion transport Monte Carlo code, and that of neutrons below 10 MeV was calculated using the TWODANT code, 10) which is a deterministic neutron transport calculation code. The obtained flux distributions for protons and neutrons were then used to calculate a heat generation distribution in the target region.…”

Section: Calculation Conditions (1) Ads Plantmentioning

confidence: 99%

Conceptual Design Study of Beam Window for Accelerator-Driven System

Sugawara

Nishihara

Obayashi

et al. 2010

Journal of Nuclear Science and Technology

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The conceptual design study of the beam window of the spallation target is one of the critical issues in the R&D of the accelerator-driven system (ADS). In this study, the investigation to create a feasible concept of the beam window for the ADS was performed by changing the proton beam profile from the Gaussian distribution to the parabolic and the flat distributions. Detailed analyses were performed by considering the particle transport of protons and neutrons in the spallation target region, the thermal hydraulics of lead bismuth eutectic (LBE) around the beam window, and the structural strength of the beam window. The calculation results showed that the difference in the temperature between the inner and outer surfaces at the top of the beam window was reduced by changing the beam profile from the Gaussian to the parabolic and the flat distributions. By this reduction, in the parabolic case, the thermal stress at the top position was also reduced and the buckling pressure increased by about 20%. On the other hand, in the flat case, the thermal stress at the peripheral region instead of at the central position increased and the buckling pressure slightly deteriorated. The buckling mode was also changed in the flat case. From these calculation results and discussions, it was confirmed that all three cases, the Gaussian, the parabolic, and the flat, were feasible and it was concluded that the concept with the parabolic distribution would be the most feasible under the current ADS design condition.

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Development of Heavy Ion Transport Monte Carlo Code

Cited by 19 publications

References 5 publications

Measurements of delayed neutrons yields and time spectra from 1 GeV protons interacting with thick ^natPb, ²⁰⁹Bi and ^natFe targets

Measurements of delayed neutrons yields and time spectra from 1 GeV protons interacting with thick ^natPb, ²⁰⁹Bi and ^natFe targets

Analysis of Organ Doses from Computed Tomography (CT) Examination by the Radiation Transport Calculation to Develop the Dosimetry System, WAZA-ARI

Conceptual Design Study of Beam Window for Accelerator-Driven System

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Development of Heavy Ion Transport Monte Carlo Code

Cited by 19 publications

References 5 publications

Measurements of delayed neutrons yields and time spectra from 1 GeV protons interacting with thick natPb, 209Bi and natFe targets

Measurements of delayed neutrons yields and time spectra from 1 GeV protons interacting with thick natPb, 209Bi and natFe targets

Analysis of Organ Doses from Computed Tomography (CT) Examination by the Radiation Transport Calculation to Develop the Dosimetry System, WAZA-ARI

Conceptual Design Study of Beam Window for Accelerator-Driven System

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Measurements of delayed neutrons yields and time spectra from 1 GeV protons interacting with thick ^natPb, ²⁰⁹Bi and ^natFe targets

Measurements of delayed neutrons yields and time spectra from 1 GeV protons interacting with thick ^natPb, ²⁰⁹Bi and ^natFe targets