JAEA-Review-2010-065.pdf:15.99MB - 日本原子力研究開発機構

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Operation of Electron Accelerator and Gamma-ray Irradiation Facilities Y. Haruyama a) , H. Hanaya a) , R. Yamagata a) , H. Seito a) , H. Kaneko a) , T. Yamaguchi b) , N. Yagi b) , M. Takagi b) , I. Kawashima b) and S. Matsuzaki b) a) Department of Advanced Radiation Technology, TARRI, JAEA, b) Radiation Application Development Association, RADA 1. Operation 1.1 Electron accelerator The electron accelerator was on service without serious trouble 9:00 - 17:30 on Monday and Friday, and 8:30 - 23:00 on Tuesday to Thursday, to satisfy the demand of operation time for users. The annual operation time of the electron accelerator is shown in Fig. 1. Total operation time of the accelerator in FY2009 947.9 h, increased by about 10% compared with that in FY2008, and analysis of the number of research subject indicated the increase of longer-time irradiation for material for space subject. The accelerator served mainly for graft-polymerization for new materials development, radiation effect study on semiconductors and various experiments of visiting users. Operation time (h) 5-04 1000 900 800 700 600 500 400 300 200 100 0 Accelerator 2005 2006 2007 2008 2009 Fisical year Fig. 1 Annual operation time of the electron accelerator. 1.2 Gamma-ray irradiation facilities The Co-60 gamma-ray irradiation facilities consist of three buildings with eight irradiation rooms and cover a wide dose-rate range from 0.04 Gy/h to 20 kGy/h. The annual operation time for the first, second irradiation facilities and food irradiation facility is 15,971 h, 12,389 h and 7,681 h, respectively, as shown in Fig. 2. The first irradiation facility served mainly for radiation-resistance testing of electric cables used in nuclear power plants and various materials used in J-PARC facility for long irradiation period. The second irradiation facility served mainly for development of new functional materials and other research subjects of visiting users, including irradiation room No.6 operated as hourly JAEA-Review 2010-065 scheduled. The food irradiation facility served mainly for development of detection method for irradiated foods and radiation resistance testing at lower dose rates. Operation time (h) - 182 - 25000 20000 15000 10000 5000 0 No.1 facility No.2 facility Food facility 2005 2006 2007 2008 2009 Fisical year Fig. 2 Annual operation time of Co-60 gamma-ray irradiation facilities. 2. Maintenance 2.1 Electron accelerator The regular maintenance was carried out for 7 days in October, 2009 for check on accelerator body, the conveyor and doors of irradiation room and repair of vacuum system at the vertical beam line. 2.2 Gamma-ray irradiation facilities The regular maintenance mainly on mechanical system for radiation source transportation is performed every year at one of three gamma-ray irradiation facilities by turns. The check of the interlock system is performed two times in a year for all the facilities. The maintenance of the first irradiation facility was done in July, 2009, for 19 days. The Cobalt-60 sources were purchased and loaded to the irradiation room No.2 in the first irradiation facility to maintain total activities of the room. The old waste sources of about 20 pieces were disposed through The Japan Radioisotope Association (JRIA).
Utilization of Electron Accelerator and Gamma-ray Irradiation Facilities H. Kaneko a) , Y. Haruyama a) , H. Hanaya a) , R. Yamagata a) , H. Seito a) , T. Yamaguchi b) , N. Yagi b) , M. Takagi b) , I. Kawashima b) and S. Matsuzaki b) a) Department of Advanced Radiation Technology, TARRI, JAEA, b) Radiation Application Development Association, RADA An electron accelerator and three gamma-ray irradiation facilities were operated for various research subjects according to the operation plan in FY 2009 without serious trouble. Distribution of research subjects and the number of experiment subjects are shown in Fig. 1 and Fig. 2, respectively. Table 1 shows irradiation time and the number of research subjects for each facility. The number of experiment subjects at the electron accelerator increased in the research fields of materials for space and heat-resist material, and decreased in the field of basic technology and nuclear facilities. The number at gamma-ray irradiation facilities increased in the field of nuclear facilities, and decreased in the field of materials processing and resource & bio-technology. Basic technology 6% Number of research subjects 5-05 Resource & Bio- technology 12% Environment 9% 600 500 400 300 200 100 0 Electron Accelerator Joint use 17% Nuclear facilities 11% Material for space 6% Electron Accelerator 2005 2006 2007 2008 2009 Fiscal year Material processing 38% JAEA-Review 2010-065 Heat-resist material 1% Joint use Resource & Biotechnology Basic technology Environment Nuclear facilities Material for space Heat-resist material Material processing Table 1 Irradiation time and number of experiment subjects in each research field at each facility in FY2009. Facility Research fields Electron Accelerator Irradiation time (h) Subject number Gamma-ray Irradiation facilities Irradiation time (h) Subject number Material processing 167.9 326 7557 326 Heat-resist material 245.3 67 150 5 Material for space 340.8 89 10474 49 Nuclear facilities 0.0 0 35525 93 Environment 2.1 5 951 78 Basic technology 74.7 10 2166 55 Resource & Biotechnology 0 0 279 110 Joint use 117.2 36 21764 150 Total 947.9 515 78866 882 Number of research subjects 1400 1200 1000 Fig. 2 The number of research subjects (FY 2005-2009). 800 600 400 200 0 Gamma-ray Irradiation facilities Basic technology 2% Environment 1% Nuclear facilities 0% Material for space 17% Heat-resist material 13% Fig. 1 Distribution of research subjects (FY 2009). - 183 - Gamma-Ray Irradiation Facilities 2005 2006 2007 2008 2009 Fiscal year Joint use 7% Material processing 60% Joint use Resource & Biotechnology Basic technology Environment Nuclear facilities Material for space Heat-resist material Material processing
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JAEA-Review 2010-065 JAEA Takasaki
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JAEA-Review 2010-065 PREFACE This r
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JAEA-Review 2010-065 and pulsed hea
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JAEA-Review 2010-065 1-23 Studies o
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JAEA-Review 2010-065 3-24 Lethal Ef
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JAEA-Review 2010-065 4-07 Fabricati
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JAEA-Review 2010-065 5. Status of I
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JAEA-Review 2010-065 1-13 Alpha-rad
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1-01 Radiation Resistance of InGaP/
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1-03 Evaluation of Soft Error Rates
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1-05 Heavy-ion Induced Current in S
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Total Ionizing Dose Tolerance of Si
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1-09 Evaluation of Single Event Eff
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Hydrogen Diffusion in a-Si:H Thin F
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1-13 Alpha-radiolysis of Organic Ex
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Study on Stability of Cs·Sr Solven
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Irradiation Effect of Gamma-Rays on
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1-19 Development of Radiation Resis
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1-21 Alpha-Ray Irradiation Damage o
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1-23 Studies on Microstructure and
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1-25 Effect of Groundwater Radiolys
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1-27 Simulation of Neutron Damage M
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1-29 Irradiation Hardening in Ion-i
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1-31 Preparation of Anion-Exchange
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1-33 Radiation-Induced Graft Polyme
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JAEA-Review 2010-065 2. Environment
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2-02 Development of Zwitterionic Mo
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Modification of Hydroxypropyl Cellu
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The Recovery of Precious Metals Usi
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2-08 ESR Study on Carboxymethyl Chi
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JAEA-Review 2010-065 3. Biotechnolo
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JAEA-Review 2010-065 3-28 Electron
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JAEA-Review 2010-065 3-51 PET Studi
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3-02 Mutagenic effects of He ion pa
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3-04 Functional Analysis of Flavono
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3-06 Generation New Ornamental Plan
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3-08 Stability of Flower-colour Mut
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3-10 JAEA-Review 2010-065 Effects o
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3-12 Producing New Gene Resources i
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3-14 Production of Soybean Mutants
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Assessment of Irradiation Treatment
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3-18 Effect of Different LET Radiat
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3-20 JAEA-Review 2010-065 Fungicide
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3-22 JAEA-Review 2010-065 FACS-base
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3-24 Lethal Effects of Different LE
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3-26 JAEA-Review 2010-065 Ion Beam
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3-28 Electron Spin Relaxation Behav
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3-30 Target Irradiation of Individu
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3-32 Carbon-ion Microbeam Induces B
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3-34 Biological Effects of Carbon I
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3-36 Difference in Bystander Lethal
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3-38 Analysis of Lethal Effect Medi
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3-40 Irradiation with Carbon Ion Be
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3-42 Expression of Two Gelsolins in
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3-44 Analysis of Bystander Cell Sig
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3-46 Quantitative Evaluation of Ric
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3-48 Visualization of 107 Cd Accumu
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3-50 Uniformity Measurement of Newl
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3-52 Imaging and Biodistribution of
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3-54 Improvement of Spatial Resolut
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3-56 The Optimum Conditions in the
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3-58 Evaluation of Cisplatin Concen
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3-60 JAEA-Review 2010-065 Analysis
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3-62 JAEA-Review 2010-065 Sensitivi
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JAEA-Review 2010-065 4-14 The Effec
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JAEA-Review 2010-065 4-39 Relations
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4-01 Hydrogen Gasochromism of WO3 F
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4-03 Synthesis of Single-Crystallin
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4-05 Synergy Effects in Electron/Io
Page 147 and 148: Fabrication of Diluted Magnetic Sem
Page 149 and 150: 4-09 Gas Permeation Characteristics
Page 151 and 152: 4-11 Control of Radial Size of Poly
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Page 157 and 158: Low Temperature Ion Channeling of F
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Page 161 and 162: 4-21 Study on Cu Precipitation in E
Page 163 and 164: 4-23 Evaluation of Fluorescence Mat
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Page 167 and 168: 4-27 Structure Analysis of K/Si(111
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Page 171 and 172: 4-31 Stabilization of Measurement S
Page 173 and 174: Systematic Measurement of Neutron a
Page 175 and 176: 4-35 Measurement of Neutron Fluence
Page 177 and 178: 4-37 Evaluation of the Response Cha
Page 179 and 180: 4-39 Relationship between Internucl
Page 181 and 182: 4-41 Analysis of Radiation Damage a
Page 183 and 184: 4-43 Positive Secondary Ion Emissio
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Page 187 and 188: 4-47 Fabrication of Dielectrophoret
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Page 191 and 192: 4-51 Development of Beam Generation
Page 193: JAEA-Review 2010-065 5. Status of I
Page 196 and 197: Operation of the AVF Cyclotron T. N
Page 200 and 201: 5-06 FACILITY USE PROGRAM in Takasa
Page 202 and 203: 5-08 Radioactive Waste Management i
Page 226 and 227: Appendix 2 List of Related Patents
Page 230 and 231: Appendix 4 Type of Research Collabo
Page 235: 表1.SI 基本単位基本量 SI
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