T. Kumada, K. Akutsu, K. Ohishi, T. Morikawa, Y. Kawamura, M. Sahara, J. Suzuki, N. Torikai
{"title":"Development of Dynamic Nuclear Polarization System for Spin-Contrast-Variation Neutron Reflectometry","authors":"T. Kumada, K. Akutsu, K. Ohishi, T. Morikawa, Y. Kawamura, M. Sahara, J. Suzuki, N. Torikai","doi":"10.7566/JPSCP.22.011015","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011015","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"38 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":"127474919","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. Takeda, T. Hosobata, Y. Yamagata, M. Hino, T. Oda, Hitoshi Endoh, N. Yamada, S. Morita, M. Furusaka
{"title":"A Focusing Test of a Multiple Segmented Ellipsoidal Neutron-Focusing Mirror for a Compact-Focusing SANS Instrument","authors":"S. Takeda, T. Hosobata, Y. Yamagata, M. Hino, T. Oda, Hitoshi Endoh, N. Yamada, S. Morita, M. Furusaka","doi":"10.7566/JPSCP.22.011013","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011013","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"405 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":"116227406","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}
The very high resolution focusing SANS diffractometer KWS3, providing the Q-resolution of about 3.8×10Å at λ=12.8Å, is used for studies of the phase diffraction grating with the rectangular surface relief (the period of 3.3μm) obtained by photolithography and electrolytic deposition of Ni. Multiple diffraction orders are simultaneously recorded using a high-resolution 2-D position-sensitive detector. The presence of even diffraction orders in the angular spectrum is explained by non-rectangular trapezoidal-like distortions of the surface relief, which is reconstructed using the expansion in the Fourier series. The inclination of the grating leads to the increase in the phase modulation and, in turn, in higher intensity of high diffraction orders allowing for retrieving sharp features of the surface relief.
{"title":"Study of Neutron Phase Diffraction Grating at Very High Resolution SANS Diffractometer KWS3","authors":"A. Ioffe, V. Pipich","doi":"10.7566/JPSCP.22.011014","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011014","url":null,"abstract":"The very high resolution focusing SANS diffractometer KWS3, providing the Q-resolution of about 3.8×10Å at λ=12.8Å, is used for studies of the phase diffraction grating with the rectangular surface relief (the period of 3.3μm) obtained by photolithography and electrolytic deposition of Ni. Multiple diffraction orders are simultaneously recorded using a high-resolution 2-D position-sensitive detector. The presence of even diffraction orders in the angular spectrum is explained by non-rectangular trapezoidal-like distortions of the surface relief, which is reconstructed using the expansion in the Fourier series. The inclination of the grating leads to the increase in the phase modulation and, in turn, in higher intensity of high diffraction orders allowing for retrieving sharp features of the surface relief.","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"60 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":"122115530","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}
Shigeyasu Itoh, Masaya Nakaji, Yuya Uchida, M. Kitaguchi, H. Shimizu
{"title":"Measurement of Pendellösung Fringes of a Single Silicon Crystal Using the Pulsed Neutron Source for Neutron EDM Search","authors":"Shigeyasu Itoh, Masaya Nakaji, Yuya Uchida, M. Kitaguchi, H. Shimizu","doi":"10.7566/JPSCP.22.011037","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011037","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"11 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":"121299677","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}
We recently introduced a concept of a neutron waveguide for enhancing the intensity of the evanescent wave inside the sample next to the waveguide. This allows for studying tribology mechanisms of soft matter/solid interfaces using grazing incidence neutron spin echo spectroscopy (GINSES) and small angle neutron scattering (GISANS). In several experiments, the number of layer structures in the waveguide was chosen to be 1 and 3. Both waveguides increased the scattering intensity of GISANS (and GINSES) experiments successfully, while the simpler waveguide produced additional small angle scattering that was not rationalized so far. The roughness on the 100nm and μm length scale may produce additional background at smaller angles. Comparisons are drawn using the Distorted Wave Born Approximation (DWBA), which is especially useful for the roughness discussion.
{"title":"Single Channel Waveguide with Roughness","authors":"H. Frielinghaus, T. Kyrey, O. Holderer","doi":"10.7566/JPSCP.22.011031","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011031","url":null,"abstract":"We recently introduced a concept of a neutron waveguide for enhancing the intensity of the evanescent wave inside the sample next to the waveguide. This allows for studying tribology mechanisms of soft matter/solid interfaces using grazing incidence neutron spin echo spectroscopy (GINSES) and small angle neutron scattering (GISANS). In several experiments, the number of layer structures in the waveguide was chosen to be 1 and 3. Both waveguides increased the scattering intensity of GISANS (and GINSES) experiments successfully, while the simpler waveguide produced additional small angle scattering that was not rationalized so far. The roughness on the 100nm and μm length scale may produce additional background at smaller angles. Comparisons are drawn using the Distorted Wave Born Approximation (DWBA), which is especially useful for the roughness discussion.","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"38 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":"122254421","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}
Noriko Oi, H. Shimizu, K. Hirota, M. Kitaguchi, C. Haddock, W. Snow, T. Yoshioka, K. Mishima, T. Ino, T. Shima
{"title":"A Search for Possible Deviations from Newtonian Gravity at the nm Length Scale Using Neutron-Noble Gas Scattering","authors":"Noriko Oi, H. Shimizu, K. Hirota, M. Kitaguchi, C. Haddock, W. Snow, T. Yoshioka, K. Mishima, T. Ino, T. Shima","doi":"10.7566/JPSCP.22.011039","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011039","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"7 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":"130072412","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. Jaksch, R. Engels, G. Kemmerling, U. Clemens, S. Désert, H. Perrey, C. Gheorghe, Arne Fredriksen, Petter Øya, H. Frielinghaus, K. Fissum, A. Jalgén, E. Rofors, K. Kanaki, R. Hall-Wilton, R. Jebali
New high-flux and high-brilliance neutron sources demand a higher count-rate capability in neutron detectors. In order to achieve that goal, the Solid-State Neutron Detector (SoNDe) project is developing a scintillation-based neutron detector. It will be capable of fully exploiting the available flux at small-angle neutron scattering (SANS) instruments at high brilliance sources, such as SKADI at the European Spallation Source (ESS). The read-out of the scintillator is based on a pixelized multi-anode PMT (MaPMT), where each pixel is treated separately. In addition to enabling higher achievable count-rates, one of the design goals was to develop a modular and scalable solution that can also be used in other instruments or even contexts, such as for laboratory setups. This has been achieved by combining the complete read-out electronics along with the MaPMT into modules that can be controlled and read-out individually via a network without additional any infrastructure. An overview of the present state of development and current test results is presented, highlighting the results of previously published project reports. (Less)
{"title":"Recent Developments SoNDe High-Flux Detector Project","authors":"S. Jaksch, R. Engels, G. Kemmerling, U. Clemens, S. Désert, H. Perrey, C. Gheorghe, Arne Fredriksen, Petter Øya, H. Frielinghaus, K. Fissum, A. Jalgén, E. Rofors, K. Kanaki, R. Hall-Wilton, R. Jebali","doi":"10.7566/JPSCP.22.011019","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011019","url":null,"abstract":"New high-flux and high-brilliance neutron sources demand a higher count-rate capability in neutron detectors. In order to achieve that goal, the Solid-State Neutron Detector (SoNDe) project is developing a scintillation-based neutron detector. It will be capable of fully exploiting the available flux at small-angle neutron scattering (SANS) instruments at high brilliance sources, such as SKADI at the European Spallation Source (ESS). The read-out of the scintillator is based on a pixelized multi-anode PMT (MaPMT), where each pixel is treated separately. In addition to enabling higher achievable count-rates, one of the design goals was to develop a modular and scalable solution that can also be used in other instruments or even contexts, such as for laboratory setups. This has been achieved by combining the complete read-out electronics along with the MaPMT into modules that can be controlled and read-out individually via a network without additional any infrastructure. An overview of the present state of development and current test results is presented, highlighting the results of previously published project reports. (Less)","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"3 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":"131411604","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. Endo, H. Shimizu, M. Kitaguchi, K. Hirota, S. Satoh, T. Kai, T. Okudaira, C. Haddock, Noriko Oi, F. Goto, Ikuya Ito, Masaya Nakaji, S. Takada, J. Koga, T. Yoshioka, K. Sakai
There is a need for a high-counting-rate neutron detector in order to search for CP-violations using compound nucleus resonances. A pixel-type detector based on a Li-glass scintillator, called the LiTA detector, is one candidate for this search. We measured the performance of this detector at MLF, J-PARC, and confirmed that it is usable up to a counting rate of 0.8 Mcps/cm^2. A boron-loaded liquid scintillator is another candidate for the high-counting-rate detector. The 3.7 ns decay time of this scintillator is shorter than that of the Li-glass scintillator. However, this liquid scintillator is sensitive to both neutrons and gamma rays. Pulse-shape analysis to remove the undesired gamma-ray signals was attempted.
{"title":"Development of High-Counting-Rate Neutron Detector for CP-Violation Search in Neutron-Induced Reactions","authors":"S. Endo, H. Shimizu, M. Kitaguchi, K. Hirota, S. Satoh, T. Kai, T. Okudaira, C. Haddock, Noriko Oi, F. Goto, Ikuya Ito, Masaya Nakaji, S. Takada, J. Koga, T. Yoshioka, K. Sakai","doi":"10.7566/JPSCP.22.011021","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011021","url":null,"abstract":"There is a need for a high-counting-rate neutron detector in order to search for CP-violations using compound nucleus resonances. A pixel-type detector based on a Li-glass scintillator, called the LiTA detector, is one candidate for this search. We measured the performance of this detector at MLF, J-PARC, and confirmed that it is usable up to a counting rate of 0.8 Mcps/cm^2. A boron-loaded liquid scintillator is another candidate for the high-counting-rate detector. The 3.7 ns decay time of this scintillator is shorter than that of the Li-glass scintillator. However, this liquid scintillator is sensitive to both neutrons and gamma rays. Pulse-shape analysis to remove the undesired gamma-ray signals was attempted.","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"35 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":"124678067","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":"Toward the First Ultracold-Neutron Production at TRIUMF","authors":"E. Pierre","doi":"10.7566/JPSCP.22.011004","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011004","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"1 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":"130824739","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}
M. Kitaguchi, K. Asahi, S. Endo, C. Haddock, M. Hino, K. Hirota, T. Ino, Ikuya Ito, T. Iwata, J. Koga, Y. Miyachi, T. Momose, Noriko Oi, T. Okudaira, K. Sakai, T. Shima, H. Shimizu, S. Takada, Y. Yamagata, T. Yamamoto, T. Yoshioka
{"title":"Fundamental Physics Using High-Performance Optics","authors":"M. Kitaguchi, K. Asahi, S. Endo, C. Haddock, M. Hino, K. Hirota, T. Ino, Ikuya Ito, T. Iwata, J. Koga, Y. Miyachi, T. Momose, Noriko Oi, T. Okudaira, K. Sakai, T. Shima, H. Shimizu, S. Takada, Y. Yamagata, T. Yamamoto, T. Yoshioka","doi":"10.7566/JPSCP.22.011034","DOIUrl":"https://doi.org/10.7566/JPSCP.22.011034","url":null,"abstract":"","PeriodicalId":126991,"journal":{"name":"Proceedings of the International Conference on Neutron Optics (NOP2017)","volume":"4 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":"117293165","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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