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Few-nucleon and many-nucleon systems with semilocal coordinate-space regularized chiral nucleon-nucleon forces

Physical Review C 2018年第1期98卷 014002-014002页

作者： S. Binder A. Calci E. Epelbaum R. J. Furnstahl J. Golak K. Hebeler T. Hüther H. Kamada H. Krebs P. Maris Ulf-G. Meißner A. Nogga R. Roth R. Skibiński K. Topolnicki J. P. Vary K. Vobig H. Witała Department of Physics and Astronomy University of Tennessee Knoxville Tennessee 37996 USA Physics Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA TRIUMF 4004 Wesbrook Mall Vancouver British Columbia V6T 2A3 Canada Institut für Theoretische Physik II Ruhr-Universität Bochum D-44780 Bochum Germany Department of Physics The Ohio State University Columbus Ohio 43210 USA M. Smoluchowski Institute of Physics Jagiellonian University PL-30348 Kraków Poland Institut für Kernphysik Technische Universität Darmstadt 64289 Darmstadt Germany Department of Physics Faculty of Engineering Kyushu Institute of Technology Kitakyushu 804-8550 Japan Department of Physics and Astronomy Iowa State University Ames Iowa 50011 USA Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics Universität Bonn D-53115 Bonn Germany Institut für Kernphysik Institute for Advanced Simulation and Jülich Center for Hadron Physics Forschungszentrum Jülich D-52425 Jülich Germany JARA-High Performance Computing Forschungszentrum Jülich D-52425 Jülich Germany

We employ a variety of ab initio methods, including Faddeev-Yakubovsky equations, no-core configuration interaction approach, coupled-cluster theory, and in-medium similarity renormalization group, to perform a comprehensive analysis of the nucleon-deuteron elastic and breakup reactions and selected properties of light and medium-mass nuclei up to Ca48 using the recently constructed semilocal coordinate-space regularized chiral nucleon-nucleon potentials. We compare the results with those based on selected phenomenological and chiral EFT two-nucleon potentials, discuss the convergence pattern of the chiral expansion, and estimate the achievable theoretical accuracy at various chiral orders using an approach to quantify truncation errors of the chiral expansion without relying on cutoff variation. We also address the robustness of this method and explore alternative ways to estimate the theoretical uncertainty from the truncation of the chiral expansion.

关键词： Few-body systems Nuclear forces

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Microservices Architecture Based Cloudware Deployment Platform for Service computing

Microservices Architecture Based Cloudware Deployment Platfo...

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2016 IEEE Symposium on Service-Oriented system Engineering (SOSE)

作者： Dong Guo Wei Wang Guosun Zeng Zerong Wei Tongji Branch National Engineering & Technology Center of High Performance Shanghai China The Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai China

With the rising of Cloud computing, evolution have occurred not only in datacenter, but also in software development, deployment, maintain and usage. How to build cloud platform for traditional software, and how to deliver cloud service to users are central research fields which will have a huge impact. In recent years, the development of microservice and container technology make software paradigm evolve towards Cloudware in cloud environment. Cloudware, which is based on service and supported by cloud platform, is an important method to cloudalize traditional software. It is also a significant way for software development, deployment, maintenance and usage in future cloud environment. Furthermore, it creates a completely new thought for software in cloud platform. In this paper, we proposed a new Cloudware PaaS platform based on microservice architecture and light weighted container technology. We can directly deploy traditional software which provides services to users by browser in this platform without any modification. By utilizing the microservice architecture, this platform has the characteristics of scalability, auto-deployment, disaster recovery and elastic configuration.

关键词： Cloud computing Containers Computer architecture Rendering (computer graphics) Virtualization Servers

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Testing semilocal chiral two-nucleon interaction in selected electroweak processes

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Physical Review C 2016年第6期93卷 064002-064002页

作者： R. Skibiński J. Golak K. Topolnicki H. Witała E. Epelbaum H. Krebs H. Kamada Ulf-G. Meißner A. Nogga Institut für Kernphysik Institute for Advanced Simulation and Jülich Center for Hadron Physics Forschungszentrum Jülich D-52425 Jülich Germany and JARA-High Performance Computing Forschungszentrum Jülich D-52425 Jülich Germany

The recently developed semilocal improved chiral nucleon-nucleon interaction is used for the first time to study several electromagnetic and weak processes at energies below the pion production threshold. Cross sections and selected polarization observables for deuteron photodisintegration, nucleon-deuteron radiative capture, three-body He3 photodisintegration, as well as capture rates for decays of the muonic H2 and He3 atoms are calculated. The Lippmann-Schwinger and Faddeev equations in momentum space are solved to obtain nuclear states. The electromagnetic current operator is taken as a single nucleon current supplemented by many-body contributions induced via the Siegert theorem. For muon capture processes the nonrelativistic weak current together with the dominant relativistic corrections is used. Our results compare well with experimental data, demonstrating the same quality as is observed for the semiphenomenological Argonne V18 potential. Compared to the older version of the chiral potential with a nonlocal regularization, a much smaller cut-off dependence is found for the state-of-art chiral local interaction employed in this paper. Finally, estimates of errors due to the truncation of the chiral expansion are given.

关键词： Electroweak interactions in nuclear physics Nuclear forces Nuclear reactions

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Few- and many-nucleon systems with semilocal coordinate-space regularized chiral nucleon-nucleon forces

arXiv

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arXiv 2018年

作者： Binder, S. Calci, A. Epelbaum, E. Furnstahl, R.J. Golak, J. Hebeler, K. Hüther, T. Kamada, H. Krebs, H. Maris, P. Meißner, Ulf G. Nogga, A. Roth, R. Skibinski, R. Topolnicki, K. Vary, J.P. Vobig, K. Wita la, H. Department of Physics and Astronomy University of Tennessee KnoxvilleTN37996 United States Physics Division Oak Ridge National Laboratory Oak RidgeTN37831 United States TRIUMF 4004 Wesbrook Mall VancouverBCV6T 2A3 Canada Institut für Theoretische Physik II Ruhr-Universität Bochum BochumD-44780 Germany Department of Physics Ohio State University ColumbusOH43210 United States M. Smoluchowski Institute of Physics Jagiellonian University KrakówPL-30348 Poland Institut für Kernphysik Technische Universität Darmstadt Darmstadt64289 Germany Department of Physics Faculty of Engineering Kyushu Institute of Technology Kitakyushu804-8550 Japan Department of Physics and Astronomy Iowa State University AmesIA50011 United States Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics Universität Bonn BonnD-53115 Germany Institut für Kernphysik Institute for Advanced Simulation and Jülich Center for Hadron Physics Forschungszentrum Jülich JülichD-52425 Germany JARA - High Performance Computing Forschungszentrum Jülich JülichD-52425 Germany

We employ a variety of ab initio methods including Faddeev-Yakubovsky equations, No-Core Configuration Interaction Approach, Coupled-Cluster Theory and In-Medium Similarity Renormalization Group to perform a comprehensive analysis of the nucleon-deuteron elastic and breakup reactions and selected properties of light and medium-mass nuclei up to 48Ca using the recently constructed semilocal coordinate-space regularized chiral nucleon-nucleon potentials. We compare the results with those based on selected phenomenological and chiral EFT two-nucleon potentials, discuss the convergence pattern of the chiral expansion and estimate the achievable theoretical accuracy at various chiral orders using the novel approach to quantify truncation errors of the chiral expansion without relying on cutoff variation. We also address the robustness of this method and explore alternative ways to estimate the theoretical uncertainty from the truncation of the chiral expansion. Copyright © 2018, The Authors. All rights reserved.

关键词： Statistical mechanics

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Overview of KAGRA : Data transfer and management

引用

Progress of Theoretical and Experimental Physics 2023年第10期2023卷

作者： Akutsu, T Ando, M Arai, K Arai, Y Araki, S Araya, A Aritomi, N Asada, H Aso, Y Bae, S Bae, Y Baiotti, L Bajpai, R Barton, M A Cannon, K Cao, Z Capocasa, E Chan, M Chen, C Chen, K Chen, Y Chiang, C-Y Chu, H Chu, Y-K Eguchi, S Enomoto, Y Flaminio, R Fujii, Y Fujikawa, Y Fukunaga, M Fukushima, M Gao, D Ge, G Ha, S Hagiwara, A Haino, S Han, W-B Hasegawa, K Hattori, K Hayakawa, H Hayama, K Himemoto, Y Hiranuma, Y Hirata, N Hirose, E Hong, Z Hsieh, B Huang, G-Z Huang, H-Y Huang, P Huang, Y-C Huang, Y Hui, D C Y Ide, S Ikenoue, B Imam, S Inayoshi, K Inoue, Y Ioka, K Ito, K Itoh, Y Izumi, K Jeon, C Jin, H-B Jung, K Jung, P Kaihotsu, K Kajita, T Kakizaki, M Kamiizumi, M Kanda, N Kang, G Kawaguchi, K Kawai, N Kawasaki, T Kim, C Kim, J Kim, J C Kim, W S Kim, Y-M Kimura, N Kita, N Kitazawa, H Kobayashi, Y Kojima, Y Kokeyama, K Komori, K Kong, A K H Kotake, K Kozakai, C Kozu, R Kumar, R Kume, J Kuo, C Kuo, H-S Kuromiya, Y Kuroyanagi, S Kusayanagi, K Kwak, K Lee, H K Lee, H W Lee, R Leonardi, M Li, K L Lin, L C-C Lin, C-Y Lin, F-K Lin, F-L Lin, H L Liu, G C Luo, L-W Majorana, E Marchio, M Michimura, Y Mio, N Miyakawa, O Miyamoto, A Miyazaki, Y Miyo, K Miyoki, S Mori, Y Morisaki, S Moriwaki, Y Nagano, K Nagano, S Nakamura, K Nakano, H Nakano, M Nakashima, R Nakayama, Y Narikawa, T Naticchioni, L Negishi, R Quynh, L Nguyen Ni, W-T Nishizawa, A Nozaki, S Obuchi, Y Ogaki, W Oh, J J Oh, K Oh, S H Ohashi, M Ohashi, T Ohishi, N Ohkawa, M Ohta, H Okutani, Y Okutomi, K Oohara, K Ooi, C Oshino, S Otabe, S Pan, K Pang, H Parisi, A Park, J Arellano, F E Peña Pinto, I Sago, N Saito, S Saito, Y Sakai, K Sakai, Y Sakuno, Y Sasaki, Y Sato, S Sato, T Sawada, T Sekiguchi, T Sekiguchi, Y Shao, L Shibagaki, S Shimizu, R Shimoda, T Shimode, K Shinkai, H Shishido, T Shoda, A Somiya, K Son, E J Sotani, H Sugimoto, R Suresh, J Suzuki, T Tagoshi, H Takahashi, H Takahashi, R Takamori, A Takano, S Takeda, H Takeda, M Tanaka, H Tanaka, K Tanaka, T Tanioka, S Martin, E N Tapia San Telada, S Tomaru, T Tomigami, Y Tomura, T Travasso, F Trozzo, L Tsang, T Ts Gravitational Wave Science Project National Astronomical Observatory of Japan (NAOJ) 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Advanced Technology Center National Astronomical Observatory of Japan (NAOJ) 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Department of Physics The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan Research Center for the Early Universe (RESCEU) The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan Institute for Cosmic Ray Research (ICRR) KAGRA Observatory The University of Tokyo 5-1-5 Kashiwa-no-Ha Kashiwa City Chiba 277-8582 Japan Accelerator Laboratory High Energy Accelerator Research Organization (KEK) 1-1 Oho Tsukuba City Ibaraki 305-0801 Japan Earthquake Research Institute The University of Tokyo 1-1-1 Yayoi Bunkyo-ku Tokyo 113-0032 Japan Department of Mathematics and Physics Hirosaki University 3 Bunkyo-cho Hirosaki City Aomori 036-8561 Japan Kamioka Branch National Astronomical Observatory of Japan (NAOJ) 238 Higashi-Mozumi Kamioka-cho Hida City Gifu 506-1205 Japan The Graduate University for Advanced Studies (SOKENDAI) 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Korea Institute of Science and Technology Information (KISTI) 245 Daehak-ro Yuseong-gu Daejeon 34141 Korea National Institute for Mathematical Sciences 70 Yuseong-daero 1689 Beon-gil Yuseong-gu Daejeon 34047 Korea International College Osaka University 1-1 Machikaneyama-cho Toyonaka City Osaka 560-0043 Japan School of High Energy Accelerator Science The Graduate University for Advanced Studies (SOKENDAI) 1-1 Oho Tsukuba City Ibaraki 305-0801 Japan Department of Astronomy Beijing Normal University No. 19 Xinjiekou Street Beijing 100875 China Department of Applied Physics Fukuoka University 8-19-1 Nanakuma Jonan Fukuoka City Fukuoka 814-0180 Japan Department of Physics Tamkang University No. 151 Yingzhuan Rd. Danshui Dist. New Taipei City 25137 Taiwan Department of Physics and Institute of Astronomy Nation

KAGRA is a newly built gravitational wave observatory, a laser interferometer with a 3 km arm length, located in Kamioka, Gifu prefecture, Japan. In this article, we describe the KAGRA data management system, i.e., recording of data, transfer from the KAGRA experiment site to computing resources, as well as data distribution to tier sites, including international sites in Taiwan and Korea. The amount of KAGRA data exceeded 1.0 PiB and increased by about 1.5 TB per day during operation in 2020. Our system has succeeded in data management, and has achieved performance that can withstand observations after 2023, that is, a transfer rate of 20 MB s-1or more and file storage of sufficient capacity for petabyte class. We also discuss the sharing of data between the global gravitational-wave detector network with other experiments, namely LIGO and Virgo. The latency, which consists of calculation of calibrated strain data and transfer time within the global network, is very important from the view of multi-messenger astronomy using gravitational waves. Real-time calbrated data delivered from the KAGRA detector site and other detectors to our computing system arrive with about 4–15 seconds of latency. These latencies are sufficiently short compared to the time taken for gravitational wave event search computations. We also established a high-latency exchange of offline calibrated data that was aggregated with a better accuracy compared with real-time data.

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Elastic and inelastic pion-nucleon scattering to fourth order in chiral perturbation theory

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Physical Review C 2017年第5期96卷 055205-055205页

作者： D. Siemens V. Bernard E. Epelbaum A. M. Gasparyan H. Krebs Ulf-G. Meißner Institut für Theoretische Physik II Ruhr-Universität Bochum D-44780 Bochum Germany Groupe de Physique Théorique Institut de Physique Nucléaire UMR 8608 CNRS Univ. Paris-Sud Université Paris Saclay F-91406 Orsay Cedex France Institute for Theoretical and Experimental Physics B. Cheremushkinskaya 25 117218 Moscow Russia Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics Universität Bonn D–53115 Bonn Germany Institute for Advanced Simulation Institut für Kernphysik and Jülich Center for Hadron Physics Forschungszentrum Jülich D-52425 Jülich Germany JARA - High Performance Computing Forschungszentrum Jülich D-52425 Jülich Germany

We extend our previous study of elastic pion-nucleon scattering in the framework of chiral perturbation theory by performing a combined analysis of the reactions πN→πN and πN→ππN. The calculation is carried out to fourth order in the chiral expansion using the heavy-baryon approach and the covariant formulation supplemented with a modified version of the extended on-mass-shell renormalization scheme. We demonstrate that a combined fit to experimental data in both channels leads to a reduced amount of correlations between the low-energy constants. A satisfactory description of the experimental data in both channels is obtained, which is further improved upon including tree-level contributions of the Δ(1232) resonance. We also explore a possibility of using the empirical information about πN subthreshold parameters obtained recently by means of the Roy-Steiner equations to stabilize the fits.

关键词： Chiral perturbation theory Effective field theory Hadron-hadron interactions Nucleon-nucleon interactions Particle interactions Scattering amplitudes

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Ab initio Calculations of the Isotopic Dependence of Nuclear Clustering

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Physical Review Letters 2017年第22期119卷 222505-222505页

作者： Serdar Elhatisari Evgeny Epelbaum Hermann Krebs Timo A. Lähde Dean Lee Ning Li Bing-nan Lu Ulf-G. Meißner Gautam Rupak Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics Universität Bonn D-53115 Bonn Germany Department of Physics Karamanoglu Mehmetbey University Karaman 70100 Turkey Institut für Theoretische Physik II Ruhr-Universität Bochum D-44870 Bochum Germany Kavli Institute for Theoretical Physics University of California Santa Barbara California 93106-4030 USA Institute for Advanced Simulation Institut für Kernphysik and Jülich Center for Hadron Physics Forschungszentrum Jülich D-52425 Jülich Germany National Superconducting Cyclotron Laboratory Michigan State University East Lansing Michigan 48824 USA Department of Physics North Carolina State University Raleigh North Carolina 27695 USA JARA—High Performance Computing Forschungszentrum Jülich D-52425 Jülich Germany Department of Physics and Astronomy and HPC2 Center for Computational Sciences Mississippi State University Mississippi State Mississippi 39762 USA

Nuclear clustering describes the appearance of structures resembling smaller nuclei such as alpha particles (He4 nuclei) within the interior of a larger nucleus. In this Letter, we present lattice Monte Carlo calculations based on chiral effective field theory for the ground states of helium, beryllium, carbon, and oxygen isotopes. By computing model-independent measures that probe three- and four-nucleon correlations at short distances, we determine the shape of the alpha clusters and the entanglement of nucleons comprising each alpha cluster with the outside medium. We also introduce a new computational approach called the pinhole algorithm, which solves a long-standing deficiency of auxiliary-field Monte Carlo simulations in computing density correlations relative to the center of mass. We use the pinhole algorithm to determine the proton and neutron density distributions and the geometry of cluster correlations in C12, C14, and C16. The structural similarities among the carbon isotopes suggest that C14 and C16 have excitations analogous to the well-known Hoyle state resonance in C12.

关键词： Cluster models Nuclear charge distribution Nuclear forces Nuclear many-body theory Nuclear structure & decays Nucleon distribution Nucleon-nucleon interactions

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Elastic and inelastic pion-nucleon scattering to fourth order in chiral perturbation theory

arXiv

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arXiv 2017年

作者： Siemens, D. Bernard, V. Epelbaum, E. Gasparyan, A.M. Krebs, H. Meißner, Ulf-G Institut für Theoretische Physik II Ruhr-Universität Bochum BochumD-44780 Germany Groupe de Physique Théorique Institut de Physique Nucléaire UMR 8608 CNRS Univ. Paris-Sud Université Paris Saclay Orsay CedexF-91406 France Institute for Theoretical and Experimental Physics B. Cheremushkinskaya 25 Moscow117218 Russia Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics Universität Bonn BonnD–53115 Germany Institute for Advanced Simulation Institut für Kernphysik and Jülich Center for Hadron Physics Forschungszentrum Jülich JülichD-52425 Germany JARA - High Performance Computing Forschungszentrum Jülich JülichD-52425 Germany

We extend our previous study of elastic pion-nucleon scattering in the framework of chiral perturbation theory by performing a combined analysis of the reactions πN → πN and πN → ππN. The calculation is carried out to fourth order in the chiral expansion using the heavy baryon approach and the covariant formulation supplemented with a modified version of the extended on-mass-shell renormalization scheme. We demonstrate that a combined fit to experimental data in both channels leads to a reduced amount of correlations between the low-energy constants. A satisfactory description of the experimental data in both channels is obtained, which is further improved upon including tree-level contributions of the ∆(1232) resonance. We also explore a possibility of using the empirical information about πN subthreshold parameters obtained recently by means of the Roy-Steiner equations to stabilize the fits. Copyright © 2017, The Authors. All rights reserved.

关键词： Hadrons

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Ab initio calculations of the isotopic dependence of nuclear clustering

arXiv

引用

arXiv 2017年

作者： Elhatisari, Serdar Epelbaum, Evgeny Krebs, Hermann Lähde, Timo A. Lee, Dean Li, Ning Lu, Bing-nan Meißner, Ulf-G Rupak, Gautam Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics Universität Bonn BonnD-53115 Germany Department of Physics Karamanoglu Mehmetbey University Karaman70100 Turkey Institut für Theoretische Physik II Ruhr-Universität Bochum BochumD-44870 Germany Kavli Institute for Theoretical Physics University of California Santa BarbaraCA93106-4030 United States Institute for Advanced Simulation Institut für Kernphysik Jülich Center for Hadron Physics Forschungszentrum Jülich JülichD-52425 Germany National Superconducting Cyclotron Laboratory Michigan State University MI48824 United States Department of Physics North Carolina State University RaleighNC27695 United States JARA - High Performance Computing Forschungszentrum Jülich JülichD-52425 Germany Department of Physics and Astronomy HPC2 Center for Computational Sciences Mississippi State University Mississippi StateMS39762 United States

Nuclear clustering describes the appearance of structures resembling smaller nuclei such as alpha particles (4He nuclei) within the interior of a larger nucleus. While clustering is important for several well-known examples [1–4], much remains to be discovered about the general nature of clustering in nuclei. In this letter we present lattice Monte Carlo calculations based on chiral effective field theory for the ground states of helium, beryllium, carbon, and oxygen isotopes. By computing model-independent measures that probe three- and four-nucleon correlations at short distances, we determine the shape of the alpha clusters and the entanglement of nucleons comprising each alpha cluster with the outside medium. We also introduce a new computational approach called the pinhole algorithm, which solves a long-standing deficiency of auxiliary-field Monte Carlo simulations in computing density correlations relative to the center of mass. We use the pinhole algorithm to determine the proton and neutron density distributions and the geometry of cluster correlations in 12C, 14C, and 16C. The structural similarities among the carbon isotopes suggest that 14C and 16C have excitations analogous to the well-known Hoyle state resonance in 12C [5, 6]. Copyright © 2017, The Authors. All rights reserved.

关键词： Ground state

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An arm length stabilization system for KAGRA and future gravitational-wave detectors

arXiv

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arXiv 2019年

作者： Akutsu, T. Ando, M. Arai, K. Arai, K. Arai, Y. Araki, S. Araya, A. Aritomi, N. Aso, Y. Bae, S. Bae, Y. Baiotti, L. Bajpai, R. Barton, M.A. Cannon, K. Capocasa, E. Chan, M. Chen, C. Chen, K. Chen, Y. Chu, H. Chu, Y.-K. Doi, K. Eguchi, S. Enomoto, Y. Flaminio, R. Fujii, Y. Fukunaga, M. Fukushima, M. Ge, G. Hagiwara, A. Haino, S. Hasegawa, K. Hayakawa, H. Hayama, K. Himemoto, Y. Hiranuma, Y. Hirata, N. Hirose, E. Hong, Z. Hsieh, B.H. Huang, G.-Z. Huang, P. Huang, Y. Ikenoue, B. Imam, S. Inayoshi, K. Inoue, Y. Ioka, K. Itoh, Y. Izumi, K. Jung, K. Jung, P. Kajita, T. Kamiizumi, M. Kanbara, S. Kanda, N. Kang, G. Kawaguchi, K. Kawai, N. Kawasaki, T. Kim, C. Kim, J.C. Kim, W.S. Kim, Y.-M. Kimura, N. Kita, N. Kitazawa, H. Kojima, Y. Kokeyama, K. Komori, K. Kong, A.K.H. Kotake, K. Kozakai, C. Kozu, R. Kumar, R. Kume, J. Kuo, C. Kuo, H.-S. Kuroyanagi, S. Kusayanagi, K. Kwak, K. Lee, H.K. Lee, H.W. Lee, R. Leonardi, M. Lin, L.C.-C. Lin, C.-Y. Lin, F.-L. Liu, G.C. Luo, L.-W. Marchio, M. Michimura, Y. Mio, N. Miyakawa, O. Miyamoto, A. Miyazaki, Y. Miyo, K. Miyoki, S. Morisaki, S. Moriwaki, Y. Musha, M. Nagano, K. Nagano, S. Nakamura, K. Nakano, H. Nakano, M. Nakashima, R. Narikawa, T. Negishi, R. Ni, W.-T. Nishizawa, A. Obuchi, Y. Ogaki, W. Oh, J.J. Oh, S.H. Ohashi, M. Ohishi, N. Ohkawa, M. Ohmae, N. Okutomi, K. Oohara, K. Ooi, C.P. Oshino, S. Pan, K. Pang, H. Park, J. Peña Arellano, F.E. Pinto, I. Sago, N. Saito, S. Saito, Y. Sakai, K. Sakai, Y. Sakuno, Y. Sato, S. Sato, T. Sawada, T. Sekiguchi, T. Sekiguchi, Y. Shibagaki, S. Shimizu, R. Shimoda, T. Shimode, K. Shinkai, H. Shishido, T. Shoda, A. Somiya, K. Son, E.J. Sotani, H. Sugimoto, R. Suzuki, T. Suzuki, T. Tagoshi, H. Takahashi, H. Takahashi, R. Takamori, A. Takano, S. Takeda, H. Takeda, M. Tanaka, H. Tanaka, K. Tanaka, K. Tanaka, T. Tanaka, T. Tanioka, S. San Martin, E.N. Tapia Mitaka City Tokyo181-8588 Japan Japan Department of Physics University of Tokyo Bunkyo-ku Tokyo113-0033 Japan University of Tokyo Bunkyo-ku Tokyo113-0033 Japan California Institute of Technology PasadenaCA91125 United States KAGRA Observatory University of Tokyo Kashiwa CityChiba277-8582 Japan Tsukuba CityIbaraki305-0801 Japan Earthquake Research Institute University of Tokyo Bunkyo-ku Tokyo113-0032 Japan Kamioka-cho Hida City Gifu506-1205 Japan Mitaka City Tokyo181-8588 Japan Yuseong-gu Daejeon34141 Korea Republic of National Institute for Mathematical Sciences Daejeon34047 Korea Republic of Department of Earth and Space Science Graduate School of Science Osaka University Toyonaka CityOsaka560-0043 Japan Tsukuba CityIbaraki305-0801 Japan Department of Applied Physics Fukuoka University Jonan Fukuoka CityFukuoka814-0180 Japan Department of Physics Tamkang University Danshui Dist. New Taipei City25137 Taiwan Department of Physics and Institute of Astronomy National Tsing Hua University Hsinchu30013 Taiwan Department of Physics Center for High Energy and High Field Physics National Central University Zhongli District Taoyuan City32001 Taiwan Institute of Physics Academia Sinica Nankang Taipei11529 Taiwan Department of Physics University of Toyama Toyama CityToyama930-8555 Japan Université Savoie Mont Blanc CNRS/IN2P3 AnnecyF-74941 France Department of Astronomy University of Tokyo Mitaka City Tokyo181-8588 Japan Chinese Academy of Sciences Xiaohongshan Wuhan430071 China Tsukuba CityIbaraki305-0801 Japan KAGRA Observatory University of Tokyo Kamioka-cho Hida City Gifu506-1205 Japan College of Industrial Technology Nihon University Narashino CityChiba275-8575 Japan Graduate School of Science and Technology Niigata University Nishi-ku Niigata City Niigata950-2181 Japan Department of Physics National Taiwan Normal University Taipei116 Taiwan University of Tokyo Kashiwa Ci

Modern ground-based gravitational wave (GW) detectors require a complex interferometer configuration with multiple coupled optical cavities. Since achieving the resonances of the arm cavities is the most challenging among the lock acquisition processes, the scheme called arm length stabilization (ALS) had been employed for lock acquisition of the arm cavities. We designed a new type of the ALS, which is compatible with the interferometers having long arms like the next generation GW detectors. The features of the new ALS are that the control configuration is simpler than those of previous ones and that it is not necessary to lay optical fibers for the ALS along the kilometer-long arms of the detector. Along with simulations of its noise performance, an experimental test of the new ALS was performed utilizing a single arm cavity of KAGRA. This paper presents the first results of the test where we demonstrated that lock acquisition of the arm cavity was achieved using the new ALS. We also demonstrated that the root mean square of residual noise was measured to be 8.2 Hz in units of frequency, which is smaller than the linewidth of the arm cavity and thus low enough to lock the full interferometer of KAGRA in a repeatable and reliable manner. Copyright © 2019, The Authors. All rights reserved.

关键词： Interferometers

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