28-30 November 2019
C-CUBE, Kyushu University Chikushi Campus 九州大学筑紫キャンパス総合研究棟 (C-Cube)
Asia/Tokyo timezone
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Contribution List

Displaying 51 contributions out of 51
After 8 years from the accident at TEPCO Fukushima Daiichi Nucleat Power Station (1F), the "on-site" R&D situation has been changed into new phase. It can be considered like from understanding to predicting by many direct and indirect measurements and analyses. In this presentation, nuclear data needs for 1F decommishioning are revisited according to these situation. The needs for accident evoluti ... More
Presented by Dr. Tokio FUKAHORI on 28 Nov 2019 at 14:10
Type: Oral Session: Nuclear Physics 原子核物理
The continuum-discretized coupled-channels method (CDCC) [1] is a reliable method for describing breakup reactions involving weakly-binding nuclei. So far, CDCC has been used successfully to reproduce experimental data for nucleon scattering from Li-isotopes [2, 3, 4], which are an important material in fusion energy development. Furthermore, CDCC can apply to analyses of four-body breakup reactio ... More
Presented by Dr. Takuma MATSUMOTO on 29 Nov 2019 at 15:15
Type: Poster Session: Poster Session ポスターセッション
Board #: 35
Fission yield is an important physical quantity to evaluate the amount of fission products after irradiation. The fission yield used in Japanese Evaluated Nuclear Data Library (JENDL) employs ENDF/B data. The fission yield has recently been evaluated in Japan based on the various theories. In order to evaluate the effect of different fission yield data on burnup calculation, burnup chain and/or fi ... More
Presented by Prof. Takanori KITADA on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 14
Even though carbon-ions provide highly conformal dose distributions thanks to the Bragg peak and the high straightness of the track, they will induce undesired dose outside the primary beam field. The undesired dose arises from secondary particles produced through beam interactions with the patient's body. Despite intensive studies, lateral dose distributions are not understood well, because there ... More
Presented by Mr. Kazuhito YOSHIDA on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 9
Until now, neutron spectra were measured for 17MeV polarized photons on a thick Au target at angles from 30 to 150 degrees [1]. The result shows two components of neutrons, evaporation and direct. The angular distribution of the evaporation shows isotropic and that of the direct shows dependence on angle between photon polarization and neutron emission. These spectra are useful to evaluate models ... More
Presented by Ms. Kim Tuyet TRAN on 28 Nov 2019 at 15:30
The Institute for Basic Science (IBS), located in Daejeon, Korea, was established in 2011 by the Korean government. The IBS has 28 Research Centers, one of which is the Rare Isotope Science Project (RISP). The accelerator complex for RISP was named RAON, which is a Korean word meaning “joy” or “happiness”. The goal of the RISP is to produce a variety of stable and rare isotope beams which ... More
Presented by Prof. Moses CHUNG on 29 Nov 2019 at 16:55
Type: Oral Session: Nuclear Physics 原子核物理
The 7th period of periodic table was completed with newly named four elements from nihonium (Z=113 [1]) to oganesson (Z=118). In superheavy nuclei/atoms with huge atomic and mass numbers, physical and chemical properties are modified by the strong Coulomb field. Discovery and production of those superheavy elements are essentially important in extending the field of such research and in searching ... More
Presented by Prof. Satoshi SAKAGUCHI on 29 Nov 2019 at 14:45
Type: Poster Session: Poster Session ポスターセッション
Board #: 24
The potential energy surface (PES) is one of the most important quantity to understand fission mechanisms. Valley in PES originating from the ground state defines the most-favorable path toward the scission. Microscopic models such as Hartree-Fock theory are known to be powerful tools to obtain the PES of fissionning nuclei. However, the effective interactions to be used in such calculations ar ... More
Presented by Mr. Kazuki FUJIO on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 18
1.Introduction The elastic scattering reaction cross section data commonly show smaller in backward angles compared to those of forward angles when the energy of the incident neutron is high. However, in the case of gap streaming phenomenon in the neutronics design of the fusion reactor, the reaction cross section value of back scattering may have a large influence on the calculation result. Un ... More
Presented by Mr. Kazuki FUKUI on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 22
Highly precise neutron nuclear data is required in nuclear transmutation research of long life minor actinides (MA) in nuclear waste. It has been difficult to measure neutron-induced reaction cross sections of MAs due to large background of the decay $\gamma$-rays from the radioactive samples. In recent years, with the advent of spallation neutron sources, the qualities of cross section measuremen ... More
Presented by Mr. Hideto NAKANO on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 29
JENDL Activation Cross Section File for Nuclear Decommissioning 2017 (JENDL/AD-2017) [1] was released in 2018. This file includes neutron-induced nuclear reaction cross-sections of 311 nuclides from 10-5 eV to 20 MeV. Dr. Okumura et al. developed a multi-group neutron activation cross-section library (MAXS2015) based on the nuclear data libraries JENDL-4.0 and JEFF-3.0/A for activation calculation ... More
Presented by Dr. Chikara KONNO on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 28
To optimize disposal of low-level radioactive waste generated from decommissioning of nuclear facilities, required are 1) reliable assessment of radioactivity level by calculation and measurement and 2) a good estimate of the uncertainty of those results for the classification of radioactive waste. However, uncertainties due to errors in cross-section data, one of the important input data for the ... More
Presented by Mr. Tatsuki AMITANI on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 27
Estimation of covariance of the neutron cross sections of the long-lived fission product (LLFP) nuclides is important for the design of an innovative LLFP transmutation system utilizing a fast reactor. Estimation of uncertainty of the cross-section data produces quantitative evaluation of errors of the reactor constants such as nuclear transmutation rate. We estimated the covariances of neutron cr ... More
Presented by Dr. Tsunenori INAKURA on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 33
A various cables used in nuclear power plants are treated as wastes in decommissioning. If part of them is treated as non-radioactive wastes, the amount of radioactive waste can be reduced. Furthermore, valuable resources such as copper can be recycled, and that contributes to the efficient use of resources. In this study, we have evaluated the produced nuclides in representative PWR cables by n ... More
Presented by Prof. Hirokuni YAMANISHI on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 34
Breast-conserving therapy is a standard local treatment for breast cancer up to stage II after breast-conserving surgery. In this treatment, the occurrence of contralateral breast cancer has been reported as a late adverse event. One of the possible reasons is the effect of low-dose exposure to contralateral breasts by scattered radiation. While treatment planning is carefully conducted, a detaile ... More
Presented by Mr. Rikuto HARA, Dr. Ayano MAKINAGA on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 25
The precise data on prompt neutron multiplicity and prompt neutron spectrum of nuclear fission are necessary for nuclear reactor designs. We plan to calculate these data by simulation based on 4D Langevin Model. The excitation energy of each fission fragment at scission directly determines the prompt neutron multiplicity. Deformation energy should be the main term of excitation energy. In this stu ... More
Presented by Xuan ZHANG on 28 Nov 2019 at 15:30
Type: Oral Session: Tutorial チュートリアル
When a fast-energy neutron (in the keV to MeV region) interacts with a nucleus, the reaction cross section no longer shows a distinct resonating shape because the compound states are strongly overlapped. Under this circumstance, each of the resonances cannot be resolved anymore, and the energy-average cross section is only meaningful. The average cross section can be related to statistical pr ... More
Presented by Dr. Toshihiko KAWANO on 29 Nov 2019 at 13:20
Precise measurements using low energy neutron give a complementary information to the collider experiments using high energy accelerators. Moreover, it is also sensitive to a new physics in high energy regions where the collider experiments may not reach. High quality neutron beam can be provided to an experimental apparatus by using the neutron optics which has been gratly advanced in recent year ... More
Presented by Dr. Tamaki YOSHIOKA on 28 Nov 2019 at 14:40
Type: Poster Session: Poster Session ポスターセッション
Board #: 20
The electron linear accelerator in Hokkaido University Neutron Source (HUNS [1]) was recently upgraded toward HUNS-2 to increase the electron beam current. The HUNS-2 is an accelerator-driven neutron source that is equipped with a cold-, thermal- and fast-neutron type of sources. Experiments such as a small angle neutron scattering [2], neutron transmission imaging [3] and neutron irradiation test ... More
Presented by Dr. Kaoru HARA on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 11
Precise nuclear data for neutron capture reactions of minor actinides (MA) have become a primary research topic for their preponderant role in the study and design of transmutation methods in nuclear waste management. Accurate nuclear data are necessary in order to examine their production and long term burn-up characteristics. Present nuclear evaluated data libraries can be used in the early ... More
Presented by Mr. Gerard ROVIRA LEVERONI on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 36
For the stable operation of the deuterium-tritium (DT) fusion reactor, it is important to measure fuel ion ratio (nT/nD). A method to determine nT/nD from the emission ratio of 14 MeV neutron by DT reaction and 2.45 MeV neutron by DD reaction is being studied. This method has a serious problem that the detection of 2.45 MeV neutron by DD reaction is interfered by slowing-down component of 14 MeV n ... More
Presented by Mr. Tomoki URAKAWA on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 19
The neutron lifetime, τ=879.4±0.6 sec, is an important parameter for particle/nuclear physics and cosmology. There is, however an 8.6 sec(4.0σ) deviation between the measured values of the neutron lifetime using two methods. A new method with a Time Projection Chamber(TPC) is being implemented at BL05 MLF J-PARC using a pulsed cold neutron beam. A TPC records both the electrons from neutron bet ... More
Presented by Mr. Kodai YANO on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 16
Radioactive Isotope Beam Factory (RIBF) at RIKEN accelerates $^{238}$U ions up to 345 MeV/u. The operational maximum beam current of $^{238}$U is about 70 particle nA now. The maximum permitted intensity of $^{238}$U beam at RIBF is 300 particle nA. Optimization of the radiation shielding design is desired for upgrade of beam current to more than 1 particle μA in the future. Neutron production th ... More
Presented by Mr. Kenta SUGIHARA on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 5
For the design of Accelerator-Driven nuclear transmutation System (ADS), accurate cross section data are required to estimate the number of radioactive nuclides for treating radioactive wastes in the ADS plant. Although much effort has been devoted to obtaining the nuclide production cross section irradiated by protons in the energy region utilized for the ADS at several facilities so far, data wi ... More
Presented by Dr. Hiroki IWAMOTO on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 8
The photon strength function (PSF) is an important quantity to estimate the neutron capture cross section for the understanding of astrophysical processes and applications to nuclear engineering. In the last half century, the giant dipole resonance (GDR) has been studied well. Recently, the PSF on the low-energy tail of the GDR below the neutron threshold is of particular interest because of the a ... More
Presented by Dr. Ayano MAKINAGA on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 17
Soft errors induced by cosmic ray have been recognized as a major threat for the electronics used at the ground level. The soft error is caused by an upset of the memory information induced by the energy deposition in devices by energetic ionizing radiation. Recently, cosmic-ray muon-induced soft errors have attracted much attention due to the reduction of soft error immunity on static random acce ... More
Presented by Mr. Seiya MANABE on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 10
Niobium(Nb)-$93$, which is mono isotope, is one of the material elements to strengthen stainless steel and is used for structural materials of nuclear reactors. Since Nb is also used as an element of superconductor alloys, it has been used in fields such as fusion reactor and accelerator development. Determination of neutron total cross section with high accuracy is therefore required in the field ... More
Presented by Mr. Shunsuke ENDO on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 7
In order to explain our universe, the existence of unknown CP violation is necessary. CP violation is equivalent to time reversal violation by assuming CPT invariance. We are planning to search for a new source of time reversal violation using compound nuclear reactions, in which a nucleus absorbs neutron and emits γ ray. It is experimentally observed that enhancement of parity violation by co ... More
Presented by Mr. SO MAKISE on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 4
Nuclear cross sections data of 209Bi(p, xn)207,206,205,204,203Po, 209Bi(p, pxn)207,206,205,204,203,202Bi, and natPb(p, xn) 206,205,204,203,202,201Bi reactions were measured using the well-known stack-foil activation technique and gamma-ray spectrometry over the 40 to 100 MeV proton energy range. The targets were arranged in different stacks consisting of Bi, Pb, Al, Au foils and Pb plates. The pro ... More
Presented by Mr. Mahdi BAKHTIARI on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 23
A treatment of High-Level Radioactive Waste (HLW) is one of the crucial issues for nuclear energy developments because of the long-term radiotoxicity of long-lived fission products (LLFPs) included in HLW. Nuclear transmutation technology has received much attention as a possible method of the burden reduction of its disposal by converting LLFPs into stable and/or short-lived nuclei. So far, measu ... More
Presented by Mr. Keita NAKANO on 28 Nov 2019 at 15:30
A research project entitled “Study on accuracy improvement of fast-neutron capture reaction data of long-lived MAs for development of nuclear transmutation systems” has been ongoing since 2017. The project aims at improving accuracies of neutron capture cross sections of long-lived minor actinides ($^{237}$Np, $^{241}$Am, $^{243}$Am) in the fast neutron energy region which are very important f ... More
Presented by Dr. Tatsuya KATABUCHI on 28 Nov 2019 at 13:10
Type: Poster Session: Poster Session ポスターセッション
Board #: 15
Neutron production double-differential cross sections from thin C and Nb targets bombarded by 290 MeV/u $^{136}$Xe ions were measured by using the HIMAC (Heavy Ion Medical Accelerator in Chiba) facility of National Institute of Radiological Sciences, Japan. We used the inverse time-of-flight method using NE213 liquid organic scintillators. NE213 liquid organic scintillators were at the angles of 1 ... More
Presented by Mr. Dalho MOON on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 12
Accurate nuclear data for neutron-induced reactions are essential for the design of nuclear transmutation system. However uncertainties of nuclear data such as Minor actinides (MA) do not fulfill requirement for the design of transmutation facilities. Measurement of the neutron capture cross section is ongoing at the Accurate Neutron Nucleus Reaction Measurement Instrument (ANNRI) in the Materials ... More
Presented by Mr. Yu KODAMA on 28 Nov 2019 at 15:30
The Nuclear Data Section (NDS) of IAEA assembles, develops and disseminates nuclear data and related databases for basic science and nuclear applications. This presentation will give an overview of the activities at IAEA-NDS, which aimed to develop nuclear data libraries and to disseminate and maintain databases such as Ion Beam Analysis Nuclear Data Library (IBANDL), Evaluated Nuclear Structure a ... More
Presented by Dr. Shin OKUMURA on 29 Nov 2019 at 11:10
Type: Oral Session: Reactor Physics 炉物理
  To start up an initial fusion reactor and for technical tests for tritium circulation and blanket system, it is necessary to provide sufficient amount of tritium from an outside device. We have proposed tritium production using a high temperature gas-cooled reactor [1,2]. The gas turbine high-temperature reactor of 300MWe nominal capacity (GTHTR300) [3] and high temperature engineering test ... More
Presented by Dr. Hideaki MATSUURA on 29 Nov 2019 at 10:00
Type: Poster Session: Poster Session ポスターセッション
Board #: 21
RANS-II, which aims to be the prototype of a compact neutron system for diagnostics of infrastructure, has recently completed in the construction and proton beam of 2.49 MeV successfully was accelerated and injected onto a Li target for neutron production. As the performance of the RANS-II neutron production target is one of most important keys from the neutronics point of view, we firstly set an ... More
Presented by Mr. Shogo IZUMITANI on 28 Nov 2019 at 15:30
The International Fusion Materials Irradiation Facility (IFMIF) is an accelerator-based D-Li neutron source, in which 40-MeV CW deuteron beam with total current of 250-mA produced by two accelerators impact on a liquid Li stream flowing at 15 m/s (Li target). In the IFMIF/EVEDA project under the Broader Approach (BA) agreement, the Li target was continuously operated with the cold trap and satisfi ... More
Presented by Dr. Atsushi KASUGAI on 29 Nov 2019 at 16:25
Type: Poster Session: Poster Session ポスターセッション
Board #: 1
The nuclide $^{45}$Ti has a half-life of 184.8 min and is a positron emitter (E$_β^+$= 439 keV, I$_β^+ $= 84.8%)suitable for positron emission tomography (PET). The deuteron-induced reaction on a scandium-45 target is a possible route to produce this radionuclide at cyclotrons. In this study, the cross sections of the $^{45}$Sc(d,2n)$^{45}$Ti reaction were measured using stacked foil activation ... More
Presented by Mr. Zolbadral TSOODOL on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 2
The radionuclide $^{169}$Yb (T$_{1/2}$ = 32 d) decays with emission of Auger electrons and X-rays, which can be used for brachytherapy. We have systematically investigated the production routes of $^{169}$Yb through charged-particle induced reactions. Deuteron- and alpha-induced reactions on $^{169}$Tm and alpha-induced reactions on $^{\rm nat}$Er have already been studied. Recently an experiment ... More
Presented by Dr. Masayuki AIKAWA on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 13
Energy and angular distributions of secondary particles from energetic proton-nucleus reactions are required to estimate the spatial distributions of energy deposition and radiation damage for the engineering design of an accelerator driven system and a particle radiation therapy. Because the estimation is performed using a Monte Carlo simulation code such as PHITS, the nuclear reaction models mus ... More
Presented by Mr. Yuji YAMAGUCHI on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 3
Estimation of reaction cross sections using existing nuclear data libraries is difficult at a low energy where compound reaction and pre-equilibrium reaction compete with each other. Accumulation of experimental data in such an energy range, therefore, helps to establish a developed library as a testing ground of novel theories of reaction mechanism. On the other hand, $^{93}$Zr, one of the long-l ... More
Presented by Dr. Jongwon HWANG on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 30
In the field of nuclear and radiation engineering, a huge amount of experimental data related to the reactor physics and the radiation shielding have been obtained at various facilities in the world, and some of them have been released to the public as open data to validate numerical tools solving the reactor physics and radiation shielding problems. Experimental data which can be utilized to val ... More
Presented by Go CHIBA on 28 Nov 2019 at 15:30
Type: Oral Session: Reactor Physics 炉物理
Recently, HTGR attracts a particular attention due to the outstanding safety features especially after the Fukushima Daiichi nuclear disaster, and the R&D is significantly promoted. In this presentation, we introduce the R&D plan of HTGR and the activities related to relating reactor physics and nuclear data including an experiment by using KUCA. Furthermore, requirement for nuclear data to the HT ... More
Presented by Dr. Yuji FUKAYA on 29 Nov 2019 at 09:30
The latest version of JENDL general purpose file, i.e. JENDL-4.0 was released in 2010. It focused on improvements of the data of fission products and minor actinides that would be important for research and development on light water reactors with high burn-up and MOX fuels, and also for innovative reactors such as ones for accelerator driven system. After that, many special purpose files have bee ... More
Presented by Dr. Osamu IWAMOTO on 28 Nov 2019 at 13:40
Type: Oral Session: Reactor Physics 炉物理
Transmutation of long-lived fission products (LLFPs: $^{79}$Se, $^{93}$Zr, $^{99}$Tc, $^{107}$Pd, $^{129}$I, and $^{135}$Cs) into short-lived or non-radioactive nuclides by fast reactors without isotope separation nor even-odd separation has been proposed as a solution to the problem of radioactive wastes disposal[1,2]. Despite investigation of many methods, such transmutation remains technologica ... More
Presented by Prof. Satoshi CHIBA on 29 Nov 2019 at 10:30
The Organisation for Economic Cooperation and Development (OECD) Nuclear Energy Agency (NEA) Data Bank (DB) is responsible for the coordination of the Joint Evaluated Fission and Fusion (JEFF) Nuclear Data Library project, which is a collaboration between NEA Data Bank participating countries. The JEFF library combines the efforts of its participating institutions to produce sets of evaluated nucl ... More
Presented by Dr. KENYA SUYAMA on 29 Nov 2019 at 11:40
Type: Poster Session: Poster Session ポスターセッション
Board #: 6
The breaking of parity symmetry and charge conjugation (CP-violation) is necessary to explain a difference between the number of matter and that of antimatter in the current universe. Assuming the CPT theorem, CP-violation means the violation of time reversal invariance. It is theoretically suggested that T-violation could be enhanced in compound nuclear reactions by an interference between an amp ... More
Presented by Mr. Jun KOGA on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 26
In the very neutron-rich nuclei, the beta-decay occurs with some accompanying process as neutron emissions, and fission. The beta-decayed neutron process is an important phenomenon for manipulating nuclear reactor, and the beta-delayed fission critically affects the termination of the r-process nucleosynthesis in stars. We performed a systematical calculation of probabilities of beta-delayed neu ... More
Presented by Dr. Hiroyuki KOURA on 28 Nov 2019 at 15:30
Type: Poster Session: Poster Session ポスターセッション
Board #: 32
Tritium (T) is required for engineering tests and the demo reactor first fuel load of fusion reactor, which uses DT reaction. In order to establish a T procurement method, it was proposed that T production method by loading Li in the high temperature gas-cooled reactor (HTGR). A loaded unit called Li rod replaces to the B burnable poison (BP) and produces T. There is a possibility that it causes d ... More
Presented by Mr. Yuki KOGA on 28 Nov 2019 at 15:30
The J-PARC (Japan Proton Accelerator Research Complex) is a high-intensity and high-energy proton accelerator complex which consists of the accelerator components of a 400-MeV linac, a 3 GeV synchrotron with 1 MW power and a 30-GeV synchrotron with a few tenth of kW power. These accelerators are providing 3 GeV beam of 1 MW to the Material and Life science Experimental Facility and 50 GeV beam of ... More
Presented by Dr. Hiroshi NAKASHIMA on 29 Nov 2019 at 15:55
Type: Poster Session: Poster Session ポスターセッション
Board #: 31
Unfolding method has been applied for neutron spectra derivation of Bonner sphere experiment, multiple-foil activation method and so on. Many types of unfolding techniques such as iterative approximation method, maximum entropy method, and stochastic methods have been developed. However, some of unfolding codes cannot analytically give uncertainty of the derived neutron spectrum. To overcome this ... More
Presented by Katsumi AOKI on 28 Nov 2019 at 15:30