{"title":"Modern Status of Searches for nEDM, Using Neutron Optics and Diffraction in Noncentrosymmetric Crystals","authors":"V. Fedorov, V. Voronin","doi":"10.7566/JPSCP.22.011007","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011007","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129458465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Tsuchikawa, Keisuke Abo, D. Furuzawa, K. Hirota, G. Ichikawa, S. Imajo, Ikuya Ito, Y. Iwashita, M. Kitaguchi, Y. Kiyanagi, Y. Miwata, K. Sato, H. Shimizu, Hayato Takeshita, K. Tsuchida, Y. Tsurita, A. Uritani, Kenichi Watanabe, Y. Yamagata, A. Yamazaki, S. Yoshihashi
{"title":"Construction of the 2nd Beamline of Nagoya University Accelerator-driven Neutron Source (NUANS)","authors":"Y. Tsuchikawa, Keisuke Abo, D. Furuzawa, K. Hirota, G. Ichikawa, S. Imajo, Ikuya Ito, Y. Iwashita, M. Kitaguchi, Y. Kiyanagi, Y. Miwata, K. Sato, H. Shimizu, Hayato Takeshita, K. Tsuchida, Y. Tsurita, A. Uritani, Kenichi Watanabe, Y. Yamagata, A. Yamazaki, S. Yoshihashi","doi":"10.7566/JPSCP.22.011024","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011024","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114244616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Imajo, Y. Iwashita, K. Mishima, M. Kitaguchi, H. Shimizu, T. Ino, S. Yamashita, K. Hirota, F. Goto, Y. Fuwa, R. Katayama
{"title":"Ultracold Neutron Time Focusing Experiment with an Improved UCN Rebuncher at J-PRAC/MLF","authors":"S. Imajo, Y. Iwashita, K. Mishima, M. Kitaguchi, H. Shimizu, T. Ino, S. Yamashita, K. Hirota, F. Goto, Y. Fuwa, R. Katayama","doi":"10.7566/JPSCP.22.011038","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011038","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124463158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of the Interface Roughness Correlation on the Reflectivity in a Neutron Multilayer Mirror","authors":"R. Maruyama, Dai Yamazaki, K. Soyama","doi":"10.7566/JPSCP.22.011011","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011011","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124741328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Kulikov, V. Ananiev, A. Belyakov, M. Bulavin, K. Mukhin, A. Rogov, E. Shabalin, A. Verkhoglyadov
{"title":"Development of Cold (Bi-Spectral) Neutron Moderators for the IBR-2 Reactor. Current Status and Plans","authors":"S. Kulikov, V. Ananiev, A. Belyakov, M. Bulavin, K. Mukhin, A. Rogov, E. Shabalin, A. Verkhoglyadov","doi":"10.7566/JPSCP.22.011001","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011001","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"183 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132001876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Uritani, Y. Menjo, Kenichi Watanabe, A. Yamazaki, Y. Kiyanagi, K. Tsuchida
{"title":"Design of Beam Shaping Assembly for an Accelerator-driven BNCT System in Nagoya University","authors":"A. Uritani, Y. Menjo, Kenichi Watanabe, A. Yamazaki, Y. Kiyanagi, K. Tsuchida","doi":"10.7566/JPSCP.22.011002","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011002","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"307 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125764877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Masaya Nakaji, Shigeyasu Itoh, Yuya Uchida, M. Kitaguchi, H. Shimizu
{"title":"Search for Neutron EDM by Using Crystal Diffraction Method","authors":"Masaya Nakaji, Shigeyasu Itoh, Yuya Uchida, M. Kitaguchi, H. Shimizu","doi":"10.7566/JPSCP.22.011040","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011040","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115117546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Ayres, E. Chanel, B. Clement, P. Harris, R. Picker, G. Pignol, W. Schreyer, G. Zsigmond
Ultracold neutrons (UCN) with kinetic energies up to 300 neV can be stored in material or magnetic confinements for hundreds of seconds. This makes them a very useful tool for probing fundamental symmetries of nature, by searching for charge-parity violation by a neutron electric dipole moment, and yielding important parameters for Big Bang nucleosynthesis, e.g. in neutron-lifetime measurements. Further increasing the intensity of UCN sources is crucial for next-generation experiments. Advanced Monte Carlo (MC) simulation codes are important in optimization of neutron optics of UCN sources and of experiments, but also in estimation of systematic effects, and in bench-marking of analysis codes. Here we will give a short overview of recent MC simulation activities in this field.
{"title":"Monte Carlo Simulations for the Optimization and Data Analysis of Experiments with Ultracold Neutrons","authors":"N. Ayres, E. Chanel, B. Clement, P. Harris, R. Picker, G. Pignol, W. Schreyer, G. Zsigmond","doi":"10.7566/JPSCP.22.011032","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011032","url":null,"abstract":"Ultracold neutrons (UCN) with kinetic energies up to 300 neV can be stored in material or magnetic confinements for hundreds of seconds. This makes them a very useful tool for probing fundamental symmetries of nature, by searching for charge-parity violation by a neutron electric dipole moment, and yielding important parameters for Big Bang nucleosynthesis, e.g. in neutron-lifetime measurements. Further increasing the intensity of UCN sources is crucial for next-generation experiments. Advanced Monte Carlo (MC) simulation codes are important in optimization of neutron optics of UCN sources and of experiments, but also in estimation of systematic effects, and in bench-marking of analysis codes. Here we will give a short overview of recent MC simulation activities in this field.","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131502626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Parker, M. Harada, H. Hayashida, K. Hiroi, T. Kai, Y. Matsumoto, T. Nakatani, K. Oikawa, M. Segawa, T. Shinohara, Yuhua Su, A. Takada, T. Takemura, T. Taniguchi, T. Tanimori, Y. Kiyanagi
Energy-resolved neutron imaging at a pulsed source utilizes the energy-dependent neutron transmission measured via time-of-flight to extract quantitative information about the internal microstructure of an object. At the RADEN instrument at J-PARC in Japan, we use cutting-edge detectors employing micro-pattern detectors or fast Li-glass scintillators and fast, all-digital data acquisition to perform such measurements, while continuing their development toward better utilization of the intense neutron source. In particular, for the Micro-Pixel Chamber based Neutron Imaging Detector ({mu}NID), a micro-pattern detector with a 400 {mu}m pitch and employing 3He for neutron conversion, we have successfully improved the spatial resolution from 200 to 100 {mu}m, increased the detection efficiency from 18 to 26% for thermal neutrons, and increased the maximum count rate from 0.4 to 1 Mcps. We are also testing a new readout element with a 215 {mu}m pitch for further improved spatial resolution, and a {mu}NID with boron-based neutron converter for increased rate performance.
{"title":"Development of Energy-Resolved Neutron Imaging Detectors at RADEN","authors":"J. Parker, M. Harada, H. Hayashida, K. Hiroi, T. Kai, Y. Matsumoto, T. Nakatani, K. Oikawa, M. Segawa, T. Shinohara, Yuhua Su, A. Takada, T. Takemura, T. Taniguchi, T. Tanimori, Y. Kiyanagi","doi":"10.7566/JPSCP.22.011022","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011022","url":null,"abstract":"Energy-resolved neutron imaging at a pulsed source utilizes the energy-dependent neutron transmission measured via time-of-flight to extract quantitative information about the internal microstructure of an object. At the RADEN instrument at J-PARC in Japan, we use cutting-edge detectors employing micro-pattern detectors or fast Li-glass scintillators and fast, all-digital data acquisition to perform such measurements, while continuing their development toward better utilization of the intense neutron source. In particular, for the Micro-Pixel Chamber based Neutron Imaging Detector ({mu}NID), a micro-pattern detector with a 400 {mu}m pitch and employing 3He for neutron conversion, we have successfully improved the spatial resolution from 200 to 100 {mu}m, increased the detection efficiency from 18 to 26% for thermal neutrons, and increased the maximum count rate from 0.4 to 1 Mcps. We are also testing a new readout element with a 215 {mu}m pitch for further improved spatial resolution, and a {mu}NID with boron-based neutron converter for increased rate performance.","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131101288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Mishima, S. Awano, Y. Fuwa, F. Goto, C. Haddock, M. Hino, M. Hirose, K. Hirota, S. Ieki, S. Imajo, T. Ino, Y. Iwashita, R. Katayama, H. Kawahara, M. Kitaguchi, R. Kitahara, J. Koga, A. Morishita, T. Nagae, N. Nagakura, N. Naganawa, Noriko Oi, H. Oide, H. Otono, Y. Seki, D. Sekiba, T. Shima, H. Shimizu, W. Snow, N. Sumi, H. Sumino, S. Tada, K. Taketani, S. Tasaki, T. Tomita, A. Umemoto, T. Yamada, S. Yamashita, M. Yokohashi, T. Yoshioka
"Neutron Optics and Physics (NOP/ BL05)" at MLF in J-PARC is a beamline for studies of fundamental physics. The beamline is divided into three branches so that different experiments can be performed in parallel. These beam branches are being used to develop a variety of new projects. We are developing an experimental project to measure the neutron lifetime with total uncertainty of 1 s (0.1%). The neutron lifetime is an important parameter in elementary particle and astrophysics. Thus far, the neutron lifetime has been measured by several groups; however, different values are obtained from different measurement methods. This experiment is using a method with different sources of systematic uncertainty than measurements conducted to date. We are also developing a source of pulsed ultra-cold neutrons (UCNs) produced from a Doppler shifter are available at the unpolarized beam branch. We are developing a time focusing device for UCNs, a so called "rebuncher", which can increase UCN density from a pulsed UCN source. At the low divergence beam branch, an experiment to search an unknown intermediate force with nanometer range is performed by measuring the angular dependence of neutron scattering by noble gases. Finally the beamline is also used for the research and development of optical elements and detectors. For example, a position sensitive neutron detector that uses emulsion to achieve sub-micrometer resolution is currently under development. We have succeeded in detecting cold and ultra-cold neutrons using the emulsion detector.
{"title":"Fundamental Physics Activities with Pulsed Neutron at J-PARC(BL05)","authors":"K. Mishima, S. Awano, Y. Fuwa, F. Goto, C. Haddock, M. Hino, M. Hirose, K. Hirota, S. Ieki, S. Imajo, T. Ino, Y. Iwashita, R. Katayama, H. Kawahara, M. Kitaguchi, R. Kitahara, J. Koga, A. Morishita, T. Nagae, N. Nagakura, N. Naganawa, Noriko Oi, H. Oide, H. Otono, Y. Seki, D. Sekiba, T. Shima, H. Shimizu, W. Snow, N. Sumi, H. Sumino, S. Tada, K. Taketani, S. Tasaki, T. Tomita, A. Umemoto, T. Yamada, S. Yamashita, M. Yokohashi, T. Yoshioka","doi":"10.7566/JPSCP.22.011033","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011033","url":null,"abstract":"\"Neutron Optics and Physics (NOP/ BL05)\" at MLF in J-PARC is a beamline for studies of fundamental physics. The beamline is divided into three branches so that different experiments can be performed in parallel. These beam branches are being used to develop a variety of new projects. We are developing an experimental project to measure the neutron lifetime with total uncertainty of 1 s (0.1%). The neutron lifetime is an important parameter in elementary particle and astrophysics. Thus far, the neutron lifetime has been measured by several groups; however, different values are obtained from different measurement methods. This experiment is using a method with different sources of systematic uncertainty than measurements conducted to date. We are also developing a source of pulsed ultra-cold neutrons (UCNs) produced from a Doppler shifter are available at the unpolarized beam branch. We are developing a time focusing device for UCNs, a so called \"rebuncher\", which can increase UCN density from a pulsed UCN source. At the low divergence beam branch, an experiment to search an unknown intermediate force with nanometer range is performed by measuring the angular dependence of neutron scattering by noble gases. Finally the beamline is also used for the research and development of optical elements and detectors. For example, a position sensitive neutron detector that uses emulsion to achieve sub-micrometer resolution is currently under development. We have succeeded in detecting cold and ultra-cold neutrons using the emulsion detector.","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126803588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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