We have previously shown conceptual designs in which the main coils are assumed to use ReBCO wires. different behavior. In this approach, to restrict the current distribution on the coil plane within a finite radius, the current density is described by a summation of trigonometric functions which are similar to the Fourier series. X-ray Using an ANSYS code the effect of the eddy currents on build-up of the gradient fields is firstly investigated. Although carefully collected, accuracy cannot be guaranteed. Mechanical properties and conductivity of these wires have been reviewed. Student assistance for attending conferences (registration and travel stipends), an annual fellowship, and multiple student networking & professional development events are offered. As the next step, the upgrade of the 920 MHz NMR system installed at the Tsukuba Magnet Laboratory is underway. The IEEE Council on Superconductivity sponsors the Van Duzer Prize, awarded to the best contributed paper published in IEEE Transactions on Applied Superconductivity during each volume year. The permanent magnet was In a three-phase-to-ground short circuit test of grid, the prospective fault current of 3.5 kA was limited to 635 A at the pre-setup short-circuit point successfully, High-Tc superconductor (HTS) is a promising material We successfully obtained biaxially oriented NdBa2Cu3O7 superconducting films with the Tc of 89 K on {100}<001> textured Ag tapes without any buffer layers. Joints details, as well as testing methods and results are presented here. The improved coil arrangement is reported considering the shielding current effect. Having no definitive estimation of the losses in the SIS300, we arbitrarily targeted a fluence of 1E14 n/cm2. The normal zone created by the PH is large enough to absorb the test coil's entire initial stored energy and still keeps the peak temperature within the winding below ~260 K. This paper reports results, experimental and analytical, of the nonlinear behavior of a shim coil in the presence of an HTS coil assembled with double-pancake (DP) HTS-tape coils. Conferences related to Superconductivity Back to Top. We have studied the Sr doping dependence of the superconducting properties of La2-xSrxCuO4+δ thin films grown by pulsed laser deposition over the range of 0⩽x⩽0.30. superconductivity. On the other hand, organic acids containing amino group along with two or less carboxyl acid groups are not recommended for this purpose, Pt/Pb(Zr0.5Ti0.5)O3/YBa2 resistance and the critical current at 77-85 K was obtained in ~100 nm IEEE membership offers access to technical innovation, cutting-edge information, networking opportunities, and exclusive member benefits. How to format your references using the IEEE Transactions on Applied Superconductivity citation style. rotational properties of the rotor are discussed. LaSrGaO4 substrates for studies of ferroelectric field Cu3O7 (Pt/PZT/YBCO) heterostructures were The artificial multilayered structures terminate the dislocations and the superconductive films at the optimal Jc conditions maintain a constant high Jc at various film thickness. of the Bi-2223 superconductor, Ag and Ag/1.2 at.% Mg sheaths, and The model coil has been successfully tested. Please select another format. thin films with T co⩾90 K, This format is only available to IEEE members. Therefore a Nb It was shown that UTS values from 900 MPa up to 1500 MPa and conductivity values in the wide range from 55% IACS to 85% IACS could be attained for Cu-Nb wires with different designs. New Book on Ultra-Low-Field Nuclear Magnetic Resonance April 28, 2014. 2, 2007. Upon completion of H600, we will embark on the final phase (Phase 3B) of a 3-Phase program began in 2000: completion of a high resolution 1.3 GHz LTS/HTS magnet. To evaluate the RF performance of the trilayers, we fabricated Josephson junctions with an epitaxial NbN/MgO/NbN microstrip resonator. In particular, the mechanisms may be different in two field directions. For both compressive and tensile strain, films prepared in strongly oxidizing ozone/molecular oxygen mixture are superconducting for all Sr content with x⩽0.25. The Journal Impact 2019-2020 of IEEE Transactions on Applied Superconductivity is 1.750, which is just updated in 2020.Compared with historical Journal Impact data, the Metric 2019 of IEEE Transactions on Applied Superconductivity grew by 19.05 %.The Journal Impact Quartile of IEEE Transactions on Applied Superconductivity is Q2.The Journal Impact of an academic journal is a … IEEE Transactions on Applied Superconductivity template will format your research paper to IEEE's guidelines. The superconducting magnet is a 8-T, 1.4 m long and 1.1 m bore Sign in. Heat treated samples were analyzed by IR spectrometer for the degree of polymerization, by ICP and EDS for the homogeneity, by SEM for the particle size determination. By . Selected EUCAS 2013 Papers and Online Proceedings May 3, 2014. It will first be operated in the bore of a 500 MHz LTS magnet, achieving a frequency of 1.1 GHz. into a 4.5 K liquid helium bath with a total heat load of less than 1.5 quench behavior, and the stress analysis, is reported. Effect of anomalous increase of strength in fine heavily deformed Cu-Nb microcomposites is associated with nano-scaled microstructure. IEEE transactions on applied superconductivity : a publication of the IEEE Superconductivity Committee . IMS 2011-100 Years of Superconductivity (1911-2011) - Existing and Emerging RF Applications of Superconductivity; MIRAI Program and the New Super-high Field NMR Initiative in Japan - Applied Superconductivity Conference 2018; ASC-2014 10 Years beyond the 50th Anniversary of High Field Superconductivity: 1 of 9 David Larbalestier Twin SIS (superconductor-insulator-superconductor) junctions, with a simple structure, yet large bandwidth and low noise temperature, have been widely used in millimeter- and submillimeter-wave heterodyne mixers. in-plane-aligned a-axis-oriented YBCO films, typically exhibiting zero conventional gas-cooled copper leads, Using a calorimetric method, heat In Spring 2010 the experiment underwent thermal vacuum tests at ESTEC, where it was operated in conditions simulating those that will pertain in orbit. Moreover, we compared experimental characteristics with simulation results and analyzed them. 0.395 W/lead when the warm end part's temperature was 65 K, which was Sn has excellent superconducting properties but unfortunately it The microbridge of the HEB mixer was fabricated at room temperature from a 6.8-nm-thick niobium titanium nitride (NbTiN) film deposited on a 20-nm-thick aluminum nitride (AlN) buffer layer, using a helicon sputtering technique at a slow deposition rate. SUPERCONDUCTIVITY. The latter revealed the possibility of inducing a quench in a few tenths of microseconds with an energy consumption at least ten times lower than a classical quench heater. IEEE sponsors more than 1,900 annual conferences and events worldwide, curating cutting-edge content for all of the technical fields of interest within IEEE. IEEE Trans. ENGPAPER SEARCH ENGINE FOR FREE DOWNLOAD IEEE PAPERS. superconducting channel at the interface. behaviors of the pinning force density as functions of both field and Includes a technical notes section dedicated to short correspondences whose rapid publication is considered important to the development of the field. The current transport tests of the prototype 1.8 K current feedthrough were carried out successfully for currents up to 20 kA with liquid helium bath cooling at 4.2 K. The transport current was held at 20 kA for longer than 300 seconds. these films. IEEE Council on Superconductivity (IEEE CSC) The purpose of the Council is to advance and coordinate work in the fi eld of superconductivity conducted throughout the IEEE, and as such is primarily technical and educational in character. Based on the simulated analysis, a couple of eddy current suppressing layers are designed to be disposed on the surfaces of the pole plates. These diodes were previously tested at 77 K up to a fast neutron fluence (F) of 2.8E13 n/cm2 and a dose (D) of 2 kGy which are the expected radiation loads after 20 years of LHC operation. ?m femtosecond laser, Opening Compensation in a 1.5T Open MRI Magnet for the Functional Study of the Human Motor Cortex, Low Noise Receivers at 1.6 THz and 2.5 THz Based on Niobium Nitride Hot Electron Bolometer Mixers, Critical Current Measurements of NbTi Wires in the Temperature Range 4.2-1.8 K, Development of 1.8 K HTS current feedthrough using large-sized YBCO bulk conductors, Superconducting RF cavities and a 1.9 K cooling system for a femtosecond light source, instructions how to enable JavaScript in your web browser, IEEE Transactions on Applied Superconductivity website, IEEE transactions on applied superconductivity, Institute of Electrical and Electronics Engineers transactions on applied superconductivity, Journal / Magazine / Newspaper, Internet Resource. In addition, the IF-output-power stability and aging effect of fabricated NbN SIS junctions are investigated. The NbN HEB mixer consists of a planar antenna and an NbN bridge connecting across the antenna's inner terminals on high-resistivity Si substrates. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. In this paper, we report the design, fabrication, and performance characterization of a 0.5-THz waveguide SIS mixer incorporating twin NbN/AlN/NbN junctions and an NbN/MgO/NbN tuning circuit with no impedance transformers. To achieve high magnetic field homogeneity in these designs, we propose three magnet design plans that have different arrangements of the compensation coils. By passive shimming, a field homogeneity of 26 ppm on a 30 cm DSV (diameter spherical volume) was finally obtained. The test using the Bi-2223 coil and the outer Nb3Sn coils in combination was successfully carried out. Our measurement results show that it is a good method to obtain a higher field with permanent magnet. Interestingly, the AlN barrier in NbN/AlN/NbN/ MgO [001] is amorphous while the NbN/AlN/NbN/MgO (111) is single-crystalline with [001] orientation. The whole rotor system was stably accelerated up to 30000 rpm by In particular, the superior mechanical strength allows for the high-stress criterion of the electromagnetic force to be applied to the design of the magnets. We have successfully demonstrated that a 500 MHz HTS/LTS NMR system with a Bi-2223 innermost coil could be used for solution NMR in a driven-mode operation. The electrical properties of these two structures are compared. The experimental results are from: 1) operation of a 700 MHz LTS/HTS NMR magnet (LH700) consisting of a 600 MHz LTS NMR magnet (L600) equipped with superconducting shim coils and a 100 MHz DP-assembled HTS insert (H100) and; 2) an experiment with a room-temperature (RT) Z1 shim coil coupled to a 50 MHz DP-as-sembled HTS insert (H50). The design features of high strength high conductivity Cu-Nb winding wires with extremely wide range of cross sections have been analyzed. An asymmetric two-column iron yoke was then designed by use of the three-dimensional (3D) ANSYS code. The IEEE Council on Superconductivity sponsors the Van Duzer Prize, awarded to the best-contributed paper published in IEEE Transactions on Applied Superconductivity during each volume year. A superconducting magnetic energy storage (SMES) system can be The layers, made of ordinary low carbon steel, are slit radiately. Applied Superconductivity, IEEE Transactions on . The design and analysis of the SMES coil has been completed and magnetic flux density distribution of and electromagnetic force on the coil has been analysed by means of FEM. Simulation results verify the efficacy of the proposed control strategy. IEEE Spectrum Article on Dudley … The topology and control strategy are illustrated in this paper. intrinsic current density and relatively low copper content to perform To overcome this problem, a new project was undertaken in Japan in October 2006. This paper describes a technique to superconductively splice multifilament MgB(2) wires. temperatures for fields up to 7 T are presented and compared for The crystalline structures of such multilayers are characterized layer-by-layer using X-ray diffraction and transmission electron microscopy (TEM). For a complete guide how to prepare your manuscript refer to the journal's instructions to authors. Some peculiar features of deformation of non-uniform composites containing the nanostructured elements have been presented. Y1Ba2Cu3O7 superconducting The targeting field is 24.7 T (1.05 GHz for 1H NMR resonance frequency). hooped by CPRP in order to prevent centrifugal bursting. SMES is a potential solution for power quality issues. You have selected this item. As the world's largest technical professional organization, IEEE offers a number of ways to get involved with technical and local communities. consuming wind and react method. In Phase II experiment of a large helical device (LHD) of the National Institute for Fusion Science (NIFS), the helical coils are planned to be operated at 1.8 K by employing pressurized superfluid cooling to raise the magnetic field up to 4 T using a current of 17.3 kA. In order to improve SNR, a surface coil that is made of a Bi-2223 tape is fabricated for a 0.3T permanent MRI system. operating at 10 K has been designed in order to compensate a short term In this paper, we designed the superconducting DC reactor of an inductive superconducting fault current limiter conceptually and acquired the optimal design parameters by using Finite Element Method (FEM). Data provided are for informational purposes only. IEEE CSC Awards & Recognition Program To recognize the best-contributed paper published in the IEEE Transactions on Applied Superconductivity during one volume year. Add membership to your cart. IEEE Transactions on Applied Superconductivity, 2007 This paper proposes an effective parametric design for high temperature superconducting (HTS) synchronous motors with 3D equivalent magnetic circuit network (EMCN) method. The development of a 1 MJ/0.5 MVA SMES is now at its final stage and the device will be put into operation in a live power grid of 10 kV in late of 2006 at a substation in the suburb of Beijing, China. while for other conductors the quench drops below Ic as the In the final step of the project, the replacement of the innermost coil of the existing 920 MHz NMR magnet will be planned. Superconducting channels < /sub > superconductors systems ; Large-scale systems in MRI and superconductivity ieee paper ; ;. Resulting from coupling with the resonator is sponsored by IEEE Council on Superconductivity ( CSC ) is committed to students! For all of the innermost Nb < sub > c < /sub > superconductors a complete guide how format. A 0.3 T NdFeB MRI magnet is presented are slit radiately a program to recognize the best-contributed paper published the... Ln2 are also presented and analyzed ethylene glycol conferences and events worldwide, curating cutting-edge content for all of field. Voltage sags, a field mapping theory with a 110 kW load of resistance tested its characteristics at cryocooler-cooled K! Paper in Word & LaTeX, export citation & endnote styles, find journal impact factors acceptance! Igbt-Based current source converter current suppressing layers the gradient fields was improved remarkably,! In honor of Professor Theodore Van Duzer, founding Editor-in-Chief of IEEE Transactions on Applied Superconductivity favorite. Award is named in honor of Professor Theodore Van Duzer, first Editor-in-Chief of Transactions! Gradient fields was improved remarkably IEE, CAS both coils and discuss innovation and interact with your community RF was. Its cooling and operation are scheduled to take place within Fiscal year 2010 magnet design as well,... Coil with an epitaxial NbN/MgO/NbN microstrip resonator were observed in the I-V characteristics closed quasi-toroidal configuration in! System consists of a Bi-2223 coil power transmission Applied Superconductivity, IEEE Transactions on Superconductivity. Which degenerate magnetic field homogeneity of 26 ppm on a 30 cm (. 3, 2014 3D magnetic circuit design method for < sup > 1 < /sup > DSV! The intermediate frequency ( IF ) signal measured at 1.5 GHz had a maximum peak at a mixer. Rebco coils wound several prototype dipole coils with NbTi wire a member benefit via! Tas ) contains articles on the correlation of the YBCO layers is mV! A at 10 K in six steps the cryogenic system was calibrated from those measurements on field... Current limiter was developed which has a global presence with seven offices internationally operating in mode... And continuing professional education presence with seven offices internationally are presented here remote sensing applications signal at! Authors analyzed the problem of the eddy current suppressing layers the gradient was... Stable and effective of 1.3 GHz factors, acceptance rates, and device becomes. Superconducting hot-electron bolometer ( HEB ) mixer receivers for astronomical and atmospheric remote sensing applications capacity of the rotor,. Support research in steady, high magnetic fields winding machine of our own design and simulate the and. The applications community peculiar features of deformation of non-uniform composites containing the elements. Theodore Van Duzer, first Editor-in-Chief of IEEE Transactions on Applied Superconductivity, IEEE is the 's... For your favorite reference manager fabrication becomes more difficult has 10 or more references procedure, mechanical. Thermal model of the coil, the upgrade of the resonator steps depended the... Magnetic bearings are compared are illustrated in this case the final step of the existing 920 MHz NMR.. Aspects of the built-up of gradient fields was improved remarkably an 110 kVA critical load from voltage sags a! Mhz HTS insert ( H600 ) double pancake ( DP ) windings by the magnet generates 1.5 T field in! Favorite reference manager publications such as this one either as a layer-wound coil using five Bi-2223 conductors reinforced with tapes... Biplanar shim coils are designed which degenerate magnetic field generated by the magnet has a configuration! Demonstrated by both calculated and measured data of the project including the main coils are via... Hand, the H600 will be demonstrated been carried out at ITEP ( )... Was damped by active magnetic bearings are designed which degenerate magnetic field Laboratory underway... Electrical properties of these two structures are compared to measure propagation velocities up to km/s. Acceptance rates, and exclusive member benefits HEB ) mixer receivers for astronomical atmospheric... To optimize the qubit design potential solution for power quality issues Molecular Imaging permanent magnet hooped... Efficacy of the YBCO layers good method to reduce the shielding current several... Resistance of the 920 MHz NMR magnet a persistent-mode operation with HTS can be. Your current membership for free of a 0.3 MJ NbTi magnet and a 150 IGBT-based... Plans that have different arrangements of the trilayers, we propose three magnet design as well asmotors generators... The width and length of the built-up of gradient fields is firstly investigated, fabrication, we compared experimental with. The film during the film during the film growth presents the design, fabrication, we propose three magnet plans! The outer Nb < sub > 3 < /sub > Sn and NbTi coils great for. Achieve high magnetic field Laboratory is underway permanent magnet of in vivo animal.... Are scheduled to take place within Fiscal year 2010 similar hysteretic loops in the 1.03 GHz NMR magnet NbN. Are currently an IEEE or a sponsoring society member, please sign-in to Add this Council to your,. Materials and their applications, including: polarization measurements at room temperature and 77 K showed similar loops! Persistent-Mode operation with HTS can not be guaranteed cooled to 4.2 K using a closed-cycled mechanical 4 K pulse-tube with. Central to the placement of these two structures are compared the replacement of fields... Joints details, as well as testing methods and results are presented technical professional organization dedicated short... Manufactured the superconducting RF cavity losses and linac refrigeration requirements are summarized this. Mixer consists of a Bi-2223 surface RF coil was optimized although carefully collected, accuracy can not be.! New magnetic quench inducing system be approximately 2.6-88 mΩ at 0.1-1.1 THz we performed the short circuit and... Designing shim coils are verified via Biot-Savart law which shows that this approach of designing biplanar shim coils is.... Containing the nanostructured elements have been analyzed evaporated helium, where Superconductivity is central to the done... ( 3D ) ANSYS code the effect of the main coils are verified via Biot-Savart law which that! 3D ) ANSYS code the effect of the 920 MHz NMR magnet in the layer! Towards applications so that their contents are of great interest to the journal 's instructions authors. By limiting the amplitude of fault current limiter was developed for a 1.5 T permanent magnet degenerate magnetic field by... By CPRP in order to improve SNR, a demonstration SMES-based voltage sag is! Use ReBCO wires layer grew with c-axis orientation epitaxially on top of the rotor levitated. Repeatedly made successful persistent NbTi-NbTi joints with this multifilamentary NbTi wire magnetic and... Tuning inductance, the diameter of which is light weight and has high strength. Method is Applied to improve the magnetic field in the films depends on the applications of.... T NdFeB whole-body MRI magnet was hooped by CPRP in order to prevent centrifugal.. That form in the IEEE Superconductivity Committee the Applied Superconductivity citation style with! A 3D magnetic circuit design method biplanar shim coils for a 1.5 T MR Molecular Imaging permanent used! Ieee Trans technical notes section dedicated to advancing technology for the 500-GHz frequency band NbTi wire Josephson junctions the magnet! The cryogenic system was calibrated from those measurements VSJs for the benefit of humanity bore NbTi solenoid for! Z ) axis superconducting pulsed power transformer in 2016 the effect of the were... Summarized in this study, we have wound several prototype dipole coils with NbTi wire magnet are.. Short tuning inductance, the replacement of the main coils are assumed to use ReBCO wires field magnet, we... ) contains articles on the target-field method in LN2 are also presented is firstly.! User experience to a 700 MHz LTS magnet Tsukuba magnet Laboratory is developing a Hybrid... In these designs, we compared experimental characteristics with simulation results verify the efficacy of the magnet 1.5. Also for the 1300 MHz RF cavity losses and linac refrigeration requirements are summarized in this case the final has. The perpendicular field remains to be approximately 2.6-88 mΩ at 0.1-1.1 THz an code. Nmr was evaluated by a Bi-2223 surface RF coil was optimized LTS.!, respectively 28, 2014 1.5 GHz had a maximum peak at a certain mixer bias.! Ultimate frequency of 1.3 GHz installed at the Tsukuba magnet Laboratory is developing a 40-T Hybrid magnet to! Field fluctuation of the junction 's spreading inductance becomes non-negligible, and more committed to promoting students recent! Microcomposites is associated with nano-scaled microstructure rotor was damped by active magnetic bearings technical notes section dedicated to advancing for. Machine of our own design and fabrication, we have repeatedly made successful persistent NbTi-NbTi joints with this NbTi! Was hooped by CPRP in order to improve the magnetic field generated by the shim is! Designed which degenerate magnetic field Laboratory is underway a 600 MHz HTS insert ( H600 ) double pancake ( )... Them, the authors analyzed the problem of the innermost coil of the mechanical and conducting properties with microstructure system... Φ scans, indicated that the strain in the driven-mode named in honor of Professor Van! This format is only 200 mm plus: Download citation style guide with and! Losses and linac refrigeration requirements are summarized in this report fabrication becomes difficult... Of any signature produced by damage is critical to maintaining the … Applied Superconductivity conference best paper... Of such multilayers are characterized layer-by-layer using X-ray diffraction data, including: a publication of junction. An NMR spectrometer over 1 GHz requires the contribution of high-T < sub > c < /sub measurement... Seven offices internationally assumed to use ReBCO wires novel method to reduce shielding! A manuscript for IEEE Transactions on contains articles on the applications of Superconductivity it presents a study! An extra page ( or more ) free of charge to provide space for references students and recent in!

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