16 results
Search Results
2. Thermal Runaway Characteristics of Bi2212 Coil for Conduction-Cooled SMES.
- Author
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Kojima, Hiroki, Hayakawa, Naoki, Noguchi, Shinki, Endo, Fumihiro, Hirano, Naoki, Nagaya, Shigeo, and Okubo, Hitoshi
- Subjects
ANALYTICAL chemistry ,FERROMAGNETIC material fluctuations ,TEMPERATURE ,ELECTRIC potential ,HEAT radiation & absorption ,TECHNOLOGY ,ENGINEERING ,ELECTRICITY - Abstract
In this paper, we investigated the thermal runaway characteristics of a conduction-cooled Bi2212 HTS coil with a 4 K-GM cryocooler system under compensating operation for load fluctuations. We measured the temporal evolutions of temperature and voltage distributions of the HTS solenoidal coil for typical current patterns of load fluctuation compensation at different ambient temperatures. On the basis of these experimental results, we constructed a thermal analysis model, and analysed the thermal runaway characteristics during and after the load fluctuation compensation. Based on the results of our experiments and the numerical simulations, we proposed criterion for the monitoring of an HTS SMES system during compensating operation for load fluctuations. [ABSTRACT FROM AUTHOR]
- Published
- 2007
- Full Text
- View/download PDF
3. Excitation Tests. of Prototype HTS Coil With Bi2212 Cables for Development of High Energy Density SMES.
- Author
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Tosaka, T., Koyanagi, K., Ohsemochi, K., Takahashi, M., Ishii, Y., Ono, M., Ogata, H., Nakamoto, K., Takigami, H., Nomura, S., Kidoguchi, K., Onoda, H., Hirano, N., and Nagaya, S.
- Subjects
MAGNETIC energy storage ,HIGH temperature superconductors ,SUPERCONDUCTING magnets ,SUPERCONDUCTORS ,ELECTRIC coils ,MAGNETIC circuits ,SUPERCONDUCTIVITY ,MAGNETIC fields - Abstract
Development of the SMES using high temperature superconducting (HTS) coil has progressed as a Japanese national project since FY 2004. The objective of the project is to obtain around twice the normal energy density via an HTS-LTS ‘hybrid’ coil system compared to an LTS coil system. The HTS coil is composed of sixteen double-pancake coils and the double-pancake coil is wound with a Bi2212 Rutherford-type cable. The HTS coil is operated at 4.2 K in liquid helium bath with the LTS coil, and operated at maximum field of 8.9 T. Before we made a hybrid coil system, we verified the design issues using HTS experimental coils. In this paper mechanical compression tests, DC operation tests and thermal runaway tests using the experimental coils are discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2007
- Full Text
- View/download PDF
4. Magnetic phase diagram of anisotropic layered superconductors via magnetization measurements forH‖c in Bi2212
- Author
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Grover, A K, Iga, F, Yamaguchi, Y, Aoki, N, Ino, K, Goyal, N, and Nishihara, Y
- Published
- 1994
- Full Text
- View/download PDF
5. Manufacture and Test of Bi-2212 Cable-in-Conduit Conductor.
- Author
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Qin, Jing-Gang, Wu, Yu, Li, Jian-Gang, Dai, Chao, Liu, Fang, Liu, Hua-Jun, Liu, Pei-Hang, Li, Chen-Shan, Hao, Qing-Bin, Zhou, Chao, and Liu, Sheng
- Subjects
- *
TOKAMAKS , *FUSION reactors , *SOLENOIDS , *CRITICAL currents , *ELECTRICAL conductors ,DESIGN & construction - Abstract
The CFETR, “China Fusion Engineering Test Reactor,” is a new tokamak device. Its magnet system includes the toroidal field (TF), central solenoid (CS), and poloidal field coils. The main goal of this study is to build a fusion engineering tokamak reactor with fusion power of 50–200 MW and self-sufficiency by blanket. The maximum field of CS and TF will get around 15 T, which is much higher than that of other reactors. New materials could be used to develop the magnet technology for the next generation of fusion reactors. Bi2Sr2CaCu2Ox is considered as a potential material for the superconducting magnets. An R&D activity is running at ASIPP for the feasibility demonstration of cable-in-conduit conductor based on the Bi2212 wire. One subsize conductor cabled with 42 wires was designed and manufactured. In this paper, the manufacturing procedures and first test results of Bi-2212 conductor samples are described in details, including wire specifications, cabling and compaction process, conductor heat treatment, as well as test results on ac loss and critical current. [ABSTRACT FROM PUBLISHER]
- Published
- 2017
- Full Text
- View/download PDF
6. Applied Superconductivity and Electromagnetic Devices - Large-Scale Applications and Availability.
- Author
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Asemd, Team, Zhou, Qian, Wu, Wei, Mei, Enming, Sun, Liangting, Zhang, Guoshu, Du, Junjie, Liu, Teng, Jiang, Shan, Qin, Jinggang, Zhou, Chao, Jin, Huan, Jin, Zhijian, Sheng, Jie, Li, Zhuyong, Wang, Sansheng, Gu, Bingfu, Liu, Longxiang, Yang, Xinsheng, and Zhao, Yong
- Subjects
ELECTROMAGNETIC devices ,SUPERCONDUCTIVITY ,SUPERCONDUCTORS ,SUPERCONDUCTING magnets ,MAGNETICS ,SYNCHROTRON radiation - Abstract
Practical superconducting materials and technologies have been enabled with availability for large scale devices and applications. Various large scale and strong magnetic field applications of superconductors have been developed, and a series of those applications are explored with technical details mainly including i) applied superconducting materials and their characteristics; ii) superconducting magnets and their techniques; iii) large and advanced electromagnetic devices and applications. The applied superconductivity, application technology, and availability are especially focused and verified with the trend of large scale applications’ development prospection. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
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7. Conceptual Design of a HTS Dipole Insert Based on Bi2212 Rutherford Cable
- Author
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Alexander V Zlobin, Igor Novitski, and Emanuela Barzi
- Subjects
Bi2212 ,dipole coil ,insert ,Lorentz forces ,mechanical structure ,mirror structure ,Physics ,QC1-999 ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
The U.S. Magnet Development Program (US-MDP) is aimed at developing high-field accelerator magnets with magnetic fields beyond the limits of Nb3Sn technology. Recent progress with composite wires and Rutherford cables based on the first generation high-temperature superconductor Bi2Sr2CaCu2O8−x (Bi2212) allows considering them for this purpose. However, Bi2212 wires and cables are sensitive to transverse stresses and strains, which are large in high-field accelerator magnets. This requires magnet designs with stress management concepts to control azimuthal and radial strains in the coil windings and prevent the degradation of the current carrying capability of Bi2212 conductor or even its permanent damage. This paper describes a novel stress management approach, which was developed at Fermilab for high-field large-aperture Nb3Sn accelerator magnets, and is now being applied to high-field dipole inserts based on Bi2212 Rutherford cables. The insert conceptual design and main parameters, including the superconducting wire and cable, as well as the coil stress management structure, key technological steps and approaches, test configurations and their target parameters, are presented and discussed.
- Published
- 2020
- Full Text
- View/download PDF
8. Conceptual Design of a HTS Dipole Insert Based on Bi2212 Rutherford Cable
- Author
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Emanuela Barzi, Igor Novitski, and Alexander V. Zlobin
- Subjects
Materials science ,dipole coil ,Bi2212 ,Mechanical engineering ,insert ,engineering.material ,01 natural sciences ,Conceptual design ,Condensed Matter::Superconductivity ,0103 physical sciences ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Fermilab ,010306 general physics ,Instrumentation ,Rutherford cable ,Insert (composites) ,010308 nuclear & particles physics ,Lorentz forces ,mechanical structure ,Superconducting wire ,mirror structure ,lcsh:QC1-999 ,Conductor ,Electromagnetic coil ,Magnet ,engineering ,lcsh:QC770-798 ,lcsh:Physics - Abstract
The U.S. Magnet Development Program (US-MDP) is aimed at developing high-field accelerator magnets with magnetic fields beyond the limits of Nb3Sn technology. Recent progress with composite wires and Rutherford cables based on the first generation high-temperature superconductor Bi2Sr2CaCu2O8&minus, x (Bi2212) allows considering them for this purpose. However, Bi2212 wires and cables are sensitive to transverse stresses and strains, which are large in high-field accelerator magnets. This requires magnet designs with stress management concepts to control azimuthal and radial strains in the coil windings and prevent the degradation of the current carrying capability of Bi2212 conductor or even its permanent damage. This paper describes a novel stress management approach, which was developed at Fermilab for high-field large-aperture Nb3Sn accelerator magnets, and is now being applied to high-field dipole inserts based on Bi2212 Rutherford cables. The insert conceptual design and main parameters, including the superconducting wire and cable, as well as the coil stress management structure, key technological steps and approaches, test configurations and their target parameters, are presented and discussed.
- Published
- 2020
- Full Text
- View/download PDF
9. Microstructure and Critical Current Properties of Bi-2212 Round Wires Fabricated With Different Nominal Compositions.
- Author
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Matsumoto, A., Kitaguchi, H., Kumakura, H., Hikichi, Y., Nakatsu, T., and Hasegawa, T.
- Subjects
MICROSTRUCTURE ,CRITICAL currents ,BISMUTH ,DENSITY currents ,POWDERS ,HEAT treatment ,METAL quenching ,WIRE - Abstract
The microstructure and superconducting properties of Bi-2212 wires seem to be strongly influenced by the nominal composition of the starting powder. We fabricated Bi-2212 round wires with different starting compositions. The highest Jc values of 175 kA/cm^2 at 4.2 K and 10 T were obtained in the Bi-rich sample with a Bi-rich composition. We carried out quenching experiments from the melting state of Bi-2212. We observed obviously smaller grains of impurity phases in the wire with high Jc than in the low-Jc wires in the melting state, which suggested that this is one of the reasons for the enhancement of the Jc values in these wires. [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF
10. Artificial Pinning Center Studies in BI2212 Tapes and Bulks With Zirconium Oxide Inclusion.
- Author
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Cursino, Eliana, Schmool, D. S., Garitaonandia, J. S., and Rodrigues Jr., Durval
- Subjects
ZIRCONIUM oxide ,FLUX pinning ,MAGNETIZATION ,MAGNETIC fields ,CRITICAL currents ,SUPERCONDUCTORS - Abstract
Zirconium oxide inclusion in Bi2212 superconducting tapes and bulks was studied as possible artificial pinning centers (APC). In order to analyze the zirconium oxide APC addition in Bi2212 samples, magnetization measurements were performed in bulks and transport properties measurements were performed on tapes. In magnetization measurements, the critical current densities are proportional to the width of the magnetization loop at each applied magnetic field. Addition of ZrO
2 in Bi2212 superconductors broadened the magnetization loop and enhanced the critical current densities at 4.2 K in bulks, as a clear indication that ZrO2 addition improved the pinning and acted as APCs. In contrast, the transport critical current densities decreased in tapes. [ABSTRACT FROM AUTHOR]- Published
- 2009
- Full Text
- View/download PDF
11. Electromechanical Behavior of Bi2Sr2CaCu2Ox Conductor Using a Split Melt Process for React-Wind- Sinter Magnet Fabrication.
- Author
-
Tengming Shen, Xiaotao Liu, Trociewitz, Ulf Peter, and Justin Schwartz
- Subjects
MAGNETISM ,ELECTROMECHANICAL technology ,MAGNETS ,SINTERING ,HEAT treatment ,MAGNETIC fields ,SUPERCONDUCTORS ,TEMPERATURE measurements ,FUSION (Phase transformation) - Abstract
A new approach to magnet fabrication, react, wind and sinter (RWS), has been proposed for Bi
2 Sr2 CaCu2 Ox (Bi2212), magnets. In this process, the conventional Bi2212 heat treatment is split into two portions, and the magnet is wound between these heat treatments. Here we report results on the RWS "split melt process". Significant increases in Ic are obtained in Bi2212 round wires compared to standard melt processing. Strain effect measurements, using the Lorentz force, indicate that RWS wires have similar mechanical performance as wind and react wires. Effects of the split melt temperature on the electromechanical properties are also reported. These results show that split melt processing and RWS magnet fabrication are viable approaches for Bi2212 conductors and magnets. [ABSTRACT FROM AUTHOR]- Published
- 2008
- Full Text
- View/download PDF
12. Manufacture and Test of Bi-2212 Cable-in-Conduit Conductor
- Author
-
Fang Liu, Yu Wu, Qing Bin Hao, Chao Dai, Pei Hang Liu, Jinggang Qin, Chao Zhou, Jiangang Li, Hua Jun Liu, Chenshan Li, Sheng Liu, and Energy, Materials and Systems
- Subjects
Critical current ,Tokamak ,Materials science ,Nuclear engineering ,Bi2212 ,Solenoid ,Superconducting magnet ,Blanket ,Fusion power ,Condensed Matter Physics ,01 natural sciences ,Conductor ,n/a OA procedure ,010305 fluids & plasmas ,Electronic, Optical and Magnetic Materials ,law.invention ,Nuclear magnetic resonance ,Electrical conduit ,law ,Magnet ,0103 physical sciences ,Electrical and Electronic Engineering ,010306 general physics - Abstract
The CFETR, “China Fusion Engineering Test Reactor,” is a new tokamak device. Its magnet system includes the toroidal field (TF), central solenoid (CS), and poloidal field coils. The main goal of this study is to build a fusion engineering tokamak reactor with fusion power of 50-200 MW and self-sufficiency by blanket. The maximum field of CS and TF will get around 15 T, which is much higher than that of other reactors. New materials could be used to develop the magnet technology for the next generation of fusion reactors. Bi 2 Sr 2 CaCu 2 O x is considered as a potential material for the superconducting magnets. An R&D activity is running at ASIPP for the feasibility demonstration of cable-in-conduit conductor based on the Bi2212 wire. One subsize conductor cabled with 42 wires was designed and manufactured. In this paper, the manufacturing procedures and first test results of Bi-2212 conductor samples are described in details, including wire specifications, cabling and compaction process, conductor heat treatment, as well as test results on ac loss and critical current.
- Published
- 2017
13. Research and Development of High-Tc SMES.
- Author
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Ichinose, Ataru, Kasahara, Hirofumi, Sakaki, Hisayoshi, Akita, Shirabe, Ishiyama, Atsushi, Maruyama, Atsushi, and Koso, Seiichi
- Subjects
SUPERCONDUCTORS ,TECHNOLOGY ,MAGNETIC energy storage ,ELECTRIC power ,ELECTROMAGNETS ,SOLID state electronics - Abstract
High-T
c superconducting technology is thought to provide many merits for SMES systems. For example, a cryocooled system can be used as a cooling system for High-Tc superconducting coils, indicating that an operation temperature can be selected from a wide-temperature range below critical temperatures. Refrigerator cooling operation temperature for High-Tc SMES can be elevated more than 20 K from conventional 4.2 K. As a result, the heat capacity of coil system becomes much larger than that at 4.2 K, indicating that thermal diffusion time constant becomes much longer. If we could absorb transient heat generation with heat capacity of the coil, SMES systems can be designed under the over current state of critical current for a short duration. As a cooling capacity for an average heat load will be enough to cool High-Tc superconducting coil system for SMES, the refrigerator system cost can be much lower than that for a SMES system using Low-Tc superconductors. Moreover, we are developing high critical current superconducting wire for SMES system. The Bi2212 Rutherford conductors can carry 4 kA at 26 K under cryocooling. We also estimate the superconducting wire cost of the whole coil system, which is designed to minimize the superconductor volume. The conclusion is that the cost of High-Tc SMIES system will be reduced by using the low-cost YBCO superconducting wires in the future. [ABSTRACT FROM AUTHOR]- Published
- 2005
- Full Text
- View/download PDF
14. Superconducting cryo-magnets processed by Spark Plasma Sintering and Texturing
- Author
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J. Noudem, L. Dupont, P. Bernstein, R. Retoux, G. Chevallier, C. Estournès, K. Berger, M. Higuchi, M. Muralidhar, M. Murakami, Laboratoire de cristallographie et sciences des matériaux ( CRISMAT ), Centre National de la Recherche Scientifique ( CNRS ) -Ecole Nationale Supérieure d'Ingénieurs de Caen ( ENSICAEN ), Normandie Université ( NU ) -Normandie Université ( NU ) -Université de Caen Normandie ( UNICAEN ), Normandie Université ( NU ), Centre interuniversitaire de recherche et d'ingenierie des matériaux ( CIRIMAT ), Institut National Polytechnique [Toulouse] ( INP ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ), Groupe de Recherche en Energie Electrique de Nancy ( GREEN ), Université de Lorraine ( UL ), Superconducting Materials Laboratory, Shibaura Institute of Technology, Centre National de la Recherche Scientifique - CNRS (FRANCE), Ecole Nationale Supérieure d'Ingénieurs de Caen - ENSICAEN (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Shibaura Institute of Technology - SIT (JAPAN), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Caen Basse-Normandie (FRANCE), Cao, Giacomo, Estournès, Claude, Orrù, Roberto, Laboratoire de cristallographie et sciences des matériaux (CRISMAT), École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Groupe de Recherche en Energie Electrique de Nancy (GREEN), Université de Lorraine (UL), Giacomo Cao, Claude Estournes, Javier Garay, Roberto Orru, Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
- Subjects
Materials science ,Matériaux ,MgB2 ,Bi2212 ,[ PHYS.COND.CM-MS ] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,Spark plasma sintering ,Levitation force ,superconducting cryo-magnets ,02 engineering and technology ,Superconductor material ,01 natural sciences ,Texturing ,chemistry.chemical_compound ,Spark Plasma Texturing (SPT) ,Trapped field ,Tungsten carbide ,0103 physical sciences ,[ PHYS.COND.CM-S ] Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con] ,Magnesium diboride ,Lamellar structure ,Ceramic ,Composite material ,010306 general physics ,Spark Plasma Sintering ,Superconductivity ,SPS in air ,Cryo-magnets ,[SPI.NRJ]Engineering Sciences [physics]/Electric power ,Cryo-magnet ,[CHIM.MATE]Chemical Sciences/Material chemistry ,Spark plasma sintering (SPS) ,021001 nanoscience & nanotechnology ,Microstructure ,Critical current density ,Amorphous solid ,[PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con] ,[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism ,chemistry ,visual_art ,[ CHIM.MATE ] Chemical Sciences/Material chemistry ,Spark plasma texturing (SPT) ,visual_art.visual_art_medium ,[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,0210 nano-technology - Abstract
International audience; In this paper, two main superconducting compounds have been studied: • The first study was focused on the preparation of magnesium diboride (MgB2) cryo-magnets by Spark Plasma Sintering (SPS). The role of the starting powder on the superconducting properties of MgB2 is investigated. Different sets of bulk MgB2 material were processed from: (i) a commercial available powder, (ii) a mixture of Mg metal and amorphous B using a single-step solid-state reaction process and (iii) a mixture of amorphous boron coated with carbon and Mg metal. The samples were prepared in tungsten carbide moulds varying the processing conditions by the modulation of the temperature, the dwell time and the applied pressure. The microstructures of the samples were investigated by SEM and TEM and correlated to their superconducting properties. The best sample was prepared at 850°C, 20 min and 100 MPa. At 20 K its critical current density (Jc) was 500 kA/cm2. Here in, we demonstrate that MgB2 is an excellent candidate to make cryo-magnets, maintaining 3.9 T at 20 K at the surface of a 20 mm diameter disk.• The SPS was modified with the aim of obtaining textured lamellar compounds with Bi2Ca2Sr2CuO8 superconductor ceramics. The new process is referred to as “Spark Plasma Texturing” (SPT). During SPT, the bulk material can freely deform itself. As a result, the formation of an inter-grain preferential crystallographic orientation is favoured. The superconducting properties were measured and discussed in correlation with textured microstructure analysis.
- Published
- 2018
15. The Axial Tensile Stress–Strain Characterization of Ag-Sheathed Bi2212 Round Wire
- Author
-
Yu Wu, Chao Zhou, Chao Dai, Fang Liu, Bo Liu, and Jinggang Qin
- Subjects
Ag/Mg alloy ,Superconductivity ,Materials science ,Strain (chemistry) ,Alloy ,Bi2212 ,Stiffness ,Ag ,engineering.material ,Condensed Matter Physics ,Thermal expansion ,Electronic, Optical and Magnetic Materials ,Characterization (materials science) ,Axial tensile performance ,Ultimate tensile strength ,engineering ,medicine ,Electrical and Electronic Engineering ,Composite material ,medicine.symptom ,Primary problem ,Model - Abstract
The stress distribution generated by the differences in the thermal expansion and the electromagnetic load is the driving factor for the transport properties of Bi2212 superconducting round wire (RW). The effort on studying the impact of strain on the transport properties is increasing, in terms of the axial and transverse stiffness of the RW. Consequently, the experimental stress-strain data are required at the RW level for accurate modeling, analysis and eventually for optimizing cable design and manufacture. In this paper, the axial tensile measurements on Bi2212 RWs and component materials (Ag and Ag/Mg alloy) have been performed at room temperature, 77 K and 4.2 K, respectively. Comparing with LTS strand (e.g., Nb 3 Sn and NbTi) , the stiffness of Bi2212 RW is less, which has become the primary problem in its application. A simple model was used to simulate the stress-strain characteristic, and compared to experimental results.
- Published
- 2015
16. Quantitative Comparison between Electronic Raman Spectra and Angle-resolved Photoemission Spectra in Superconducting State of Bi2212
- Author
-
Nguyen Trung Hieu, Takahiko Masui, Kiyohisa Tanaka, Shigeki Miyasaka, Takao Sasagawa, and Setsuko Tajima
- Subjects
Superconductivity ,Physics ,Condensed matter physics ,Photoemission spectroscopy ,Bi2212 ,Fermi surface ,Angle-resolved photoemission spectroscopy ,Physics and Astronomy(all) ,ARPES ,Spectral line ,high-Tc superconductivity ,symbols.namesake ,Scattering rate ,Condensed Matter::Superconductivity ,symbols ,Atomic physics ,Raman spectroscopy ,Raman scattering ,electronic Raman scattering - Abstract
In this paper we present the calculations of electronic Raman scattering (ERS) spectra for B1 g and B2 g geometries using angle- resolved photoemission spectroscopy (ARPES) spectra of nearly optimally doped cuprate superconductor Bi2Sr2CaCu2O8 (Bi2212), Tc=92K. Calculations were taken on the Fermi surface (FS) in the superconducting state at temperature well below Tc and the results were quantitatively compared to the experimental data. It shows that there is a good agreement in B1 g while the peak position in B2 g is about 100 cm-1 lower than the experimental one. This result indicates that the scattering rate is not large enough to explain Raman spectra and additional contribution should be taken into account to reproduce ERS spectra.
- Published
- 2013
- Full Text
- View/download PDF
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