T. Oyama, H. Iwase, A. Toyoda, Naoto Yoshihara, T. Sanami
{"title":"KEK电子/正电子注入直线加速器束流隧道中的热中子分布","authors":"T. Oyama, H. Iwase, A. Toyoda, Naoto Yoshihara, T. Sanami","doi":"10.15669/PNST.6.181","DOIUrl":null,"url":null,"abstract":"The thermal neutron flux distribution formed in the KEK electron/positron injector linac (KEK-linac) tunnel by the positron production beam operation was measured using a gold foil activation technique. The measured data were compared with the calculation results of the PHITS code. The data indicate that the thermal neutrons were locally distributed within a range of 15-20 m of the target position. The thermal neutron flux obtained using the PHITS code reproduced the experimental data at the target location. We obtained coefficient “C” for KEK-linac tunnel from experimental result and calculation as 2.25 that is used in empirical formula to obtain thermal neutron flux, φth = C Q / S, where Q is neutron source intensity, S is the area of tunnel surface.","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thermal neutron distribution in the beam line tunnel of the KEK electron/positron injector linac\",\"authors\":\"T. Oyama, H. Iwase, A. Toyoda, Naoto Yoshihara, T. Sanami\",\"doi\":\"10.15669/PNST.6.181\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The thermal neutron flux distribution formed in the KEK electron/positron injector linac (KEK-linac) tunnel by the positron production beam operation was measured using a gold foil activation technique. The measured data were compared with the calculation results of the PHITS code. The data indicate that the thermal neutrons were locally distributed within a range of 15-20 m of the target position. The thermal neutron flux obtained using the PHITS code reproduced the experimental data at the target location. We obtained coefficient “C” for KEK-linac tunnel from experimental result and calculation as 2.25 that is used in empirical formula to obtain thermal neutron flux, φth = C Q / S, where Q is neutron source intensity, S is the area of tunnel surface.\",\"PeriodicalId\":20706,\"journal\":{\"name\":\"Progress in Nuclear Science and Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-01-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Progress in Nuclear Science and Technology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.15669/PNST.6.181\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Progress in Nuclear Science and Technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.15669/PNST.6.181","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
利用金箔活化技术测量了KEK电子/正电子注入直线加速器(KEK-linac)隧道中正电子产生束操作形成的热中子通量分布。实测数据与PHITS规范的计算结果进行了比较。数据表明，热中子局部分布在目标位置15 ~ 20 m范围内。利用PHITS代码获得的热中子通量再现了目标位置的实验数据。根据实验结果和计算得出kek -直线隧道的系数C为2.25，φth = C Q / S，其中Q为中子源强度，S为隧道表面面积。
Thermal neutron distribution in the beam line tunnel of the KEK electron/positron injector linac
The thermal neutron flux distribution formed in the KEK electron/positron injector linac (KEK-linac) tunnel by the positron production beam operation was measured using a gold foil activation technique. The measured data were compared with the calculation results of the PHITS code. The data indicate that the thermal neutrons were locally distributed within a range of 15-20 m of the target position. The thermal neutron flux obtained using the PHITS code reproduced the experimental data at the target location. We obtained coefficient “C” for KEK-linac tunnel from experimental result and calculation as 2.25 that is used in empirical formula to obtain thermal neutron flux, φth = C Q / S, where Q is neutron source intensity, S is the area of tunnel surface.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
