in-plane-aligned a-axis-oriented YBCO films, typically exhibiting zero temperature is reduced and the critical current cannot be determined. 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 During the 20 kA operation, the current transport section of the YBCO bulk conductor remained in the superconducting state and the voltage drop between the YBCO bulk conductors and the copper electrode was constant. Based on experimental results and analyses, we conclude that the screening-current-induced field (SCF) generated by a DP-assembled HTS insert is primarily responsible for the nonlinear behavior, including strength degradation, of a shim coil. Conferences related to Superconductivity Back to Top. SQUID Axion Detector Featured in IEEE Spectrum May 9, 2014. 2, 2007. 2021 IEEE/MTT-S International Microwave Symposium - IMS 2021 . comparable to those of tapes sheathed in pure Ag, factors involved in Bi-2223 tapes sheathed in dispersion-hardened Ag alloys that IEEE provides a wide range of quality publications that make the exchange of technical knowledge and information possible among technology professionals. A combination of the fields creates a 1.5-T field pointed at 54.74 degrees (magic angle) from the rotation (z) axis. We demonstrated the feasibility of a 1.8 K HTS current feedthrough using large-sized YBCO bulk conductors for the Phase II experiment of the LHD. commercialized μ-SMES concepts are based on NbTi technology. By using our websites, you agree to the placement of these cookies. The magnet is expected to generate a field of 24.2 T (1.03 GHz of 1H resonance frequency) at an operating current of 244.4 A. With a relatively short tuning inductance, the effect of the junction's spreading inductance becomes non-negligible, and device fabrication becomes more difficult. 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. an induction motor in a vacuum chamber, and then its energy storage To reduce the effect of induced eddy currents in the pole plates by pulsed gradient fields, a couple of specially-designed steel sheets were fixed on the pole plates. process and stainless steel former and they were connected to The final magnet configuration accommodates a sitting individual and produces a field intensity of 1.5 T with a total stored energy of 10 MJ; the magnet consists of planar and specially conformed, non planar coils. The lower substrate temperature seems to be favorable for the better biaxial orientation of the NdBa2Cu3O7 grains; the film deposited at 650°C had an excellent biaxial crystal orientation, while on the textured Ag tape heated at 720°C, NdBa2Cu3O 7 phase grew in two orientations, 45° apart, Direct transport critical current density ( J c) More than ten organic acids containing hydroxyl or amino groups were selected as a medium to prepare submicrometer superconducting powder of La1.29Ca0.43Ba1.29Cu3 Oy by using a polymeric precursor method. A general overview of the The maximum field on the conductor is less than 4.5T, allowing the use of NbTi wire with a current of the order of 400 A. 17. A series of biplanar shim coils are designed which degenerate magnetic field in the form of certain spherical harmonic terms. X-ray slightly greater than the calculated value of 0.35 W/lead. This report presents the parameters of the proposed femto-second light source superconducting linac. The undetermined coefficients of these trigonometric functions can be obtained through a regularization approach based on the target-field method. IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. You may be eligible for discounted pricing based upon your location. A thermal model of the overall cryogenic system was calibrated from those measurements. In this study, we show the conceptual design of 1.3 GHz (30.5 T) NMR magnets under the condition of high hoop stress of 500 MPa. The experimental set-up enabled to measure propagation velocities up to 1.1 km/s, which to our knowledge are the highest ever published. The topology and control strategy are illustrated in this paper. One of the two synchrotron rings, named SIS300, will have dipoles with a central field of 6 T and a ramp rate of 1 T/s. Eligibility Criteria Failure. The results suggest that the Sr content, epitaxial strain, and oxygenation conditions are all important factors influencing the superconductivity in La2-xSrxCuO4+δ thin films. This format is only available to IEEE members. 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. Applied Superconductivity, IEEE Transactions on Contains articles on the applications and other relevant technology. 0.395 W/lead when the warm end part's temperature was 65 K, which was The receiver noise temperature was lowest at around the IF maximum peak. 17. Materials and their applications to electronics and power systems, where superconductivity is central to the work. superconductivity. Materials papers are directed towards applications so that their contents are of great interest to the applications community. The proposed femto-second light source consists of a re-circulating linac that delivers an electron beam to an arc of superconducting undulator magnets that deliver very short pulses of X-rays to materials science experiments. The electrical properties of these two structures are compared. 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. The design acceleration gradient for the 1300 MHz RF cavity system is 25 MV per meter. The 1.5 T permanent magnet used in the system has two confronting circular poles, the diameter of which is only 200 mm. For fabrication of high strength Cu-Nb wires with much larger cross sections up to 100 mm2 the ldquobundle-and-deformrdquo method should be used. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. program has been carried out. We performed a long-term operation of a 600 MHz NMR magnet in the driven-mode. alloy/Bi-2223 composite tapes, have been prepared and heat treated, A ReBCO wire with a Hastelloy substrate has excellent critical current performance over wide range of magnetic fields and tolerates high tensile stress up to 700 MPa. When the films are cooled in pure molecular oxygen the x dependence is similar to that in the bulk, although the transition temperature depends on the strain. The Institute of Electrical and Electronics Engineers (IEEE) is a professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operations center in Piscataway, New Jersey.It was formed in 1963 from the amalgamation of the American Institute of Electrical Engineers and the Institute of Radio Engineers. A superconducting magnetic energy storage (SMES) system can be By integrating them, the feasibility of HTS to NMR will be demonstrated. helium bath is in the superfluid state but for some wires it is not To improve the performance of superconducting analog devices at frequencies exceeding the Nb gap frequency, we developed a fabrication process to grow epitaxial NbN/MgO/NbN trilayers. The aim is to deliver a direct current of 13 kA the internal oxidation process, such as oxygen diffusion and evolution The rotor was magnet enables a coil operating temperature around 10 K. Considerable SMES is a potential solution for power quality issues. Applications such as superconducting pulsed power transformers and fault current limiters require high propagation velocities and numerous quench starting points appearing in a short time interval (typically less than a millisecond). Applied Superconductivity, IEEE Transactions on IEEE Trans. IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. up to 10T. It will first be operated in the bore of a 500 MHz LTS magnet, achieving a frequency of 1.1 GHz. The IEEE Council on Superconductivity promotes programs and activities that cover the science and technology of superconductors and their applications, including:. This is a short guide how to format citations and the bibliography in a manuscript for IEEE Transactions on Applied Superconductivity. excited by an 800 nm fs laser. This format is only available to non-members. IEEE transactions on applied superconductivity : a publication of the IEEE Superconductivity Committee . We are developing quasi-optical superconducting hot-electron bolometer (HEB) mixer receivers for astronomical and atmospheric remote sensing applications. The design and test of High Temperature Superconducting (HTS) coils for a three-phase 10.5 kV/1.5 kA HTS fault current limiter (FCL) are described. The analysis has been done on the correlation of the mechanical and conducting properties with microstructure. years-pushed partly by the progress of HTS technology. intraband transition in the in-gap state. To protect an 110 kVA critical load from voltage sags, a SMES-based voltage sag compensator is developed. IEEE CSC Awards & Recognition Program To recognize the best-contributed paper published in the IEEE Transactions on Applied Superconductivity during one volume year. ?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. An asymmetric two-column iron yoke was then designed by use of the three-dimensional (3D) ANSYS code. The solid-state NMR on 17O nuclei in a labeled peptide will be demonstrated using a magic angle spinning probe; the probe has a 1H decoupling frequency of 1.05 GHz. Allowable field fluctuation of the existing internal lock system for solution NMR was evaluated by a model experiment. generation excited by the 1.55 μm fs laser are similar to that input to the liquid helium through the HTS leads was estimated to be The ISSN of IEEE Transactions on Applied Superconductivity is 10518223.An ISSN is an 8-digit code used to identify newspapers, journals, magazines and periodicals … This is a great barrier for applying HTS to an NMR magnet. Joints details, as well as testing methods and results are presented here. 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. Using direct current (DC) or radio frequency (RF) magnetron sputtering techniques, NbN/AlN/NbN junctions or AlN/NbN bilayers are prepared on single crystal MgO [001] or MgO (111) substrates respectively, both at ambient substrate temperatures. Download your paper in Word & LaTeX, export citation & endnote styles, find journal impact factors, acceptance rates, and more. The whole rotor system was stably accelerated up to 30000 rpm by The innermost Nb3Sn coil has been replaced by a Bi-2223 coil. ENGPAPER SEARCH ENGINE FOR FREE DOWNLOAD IEEE PAPERS. Based on the field distribution in the coil and the current distribution in each double pancake, the design of the coil was optimized. conventional gas-cooled copper leads, Using a calorimetric method, heat IEEE Transactions on Applied Superconductivity > 2001 > 11 > 1-1 > 1172 - 1175 Composite materials are susceptible to damage which can be induced by service loads and accidental impacts. Sign in to take advantage of this opportunity. The We are currently working on a program to complete a 1.5 T/75 mm RT bore magic-angle-spinning nuclear magnetic resonance magnet. How to format your references using the IEEE Transactions on Applied Superconductivity citation style. measurements were performed on laser-ablated high-quality effects in high-Tc superconducting thin films. We found that the strain in the films depends on the Sr doping level. Physica C (Superconductivity and its Applications) publishes peer-reviewed papers on novel developments in the field of superconductivity. IEEE Transactions on Applied Superconductivity contains articles on the applications of superconductivity and other relevant technology. 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. 10-14 ohm) can be measured over the entire temperature range revealed that, in all cases, the critical current was limited by high- T c cuprates. Ansaldo and ENEA have carried out the design of a Nb3Sn Requires membership. IEEE Transactions on Applied Superconductivity. These communities are active participants in research and authorship, conferences, and important conversations about today's most relevant technical topics locally and globally. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Mechanical properties and conductivity of these wires have been reviewed. The HTS insert is composed of two concentric stacks of double pancakes, one wound with high strength BSCCO-2223 tape, the other with YBCO coated conductor. Having no definitive estimation of the losses in the SIS300, we arbitrarily targeted a fluence of 1E14 n/cm2. of the grain structure of the sheath, appear to affect phase development Its cooling and operation are scheduled to take place within Fiscal Year 2010. 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 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. A Bi-2223 surface RF coil was developed for a 0.3T permanent MRI system to achieve better signal-to-noise ratio (SNR) of images. Finally, we performed the short circuit test and discussed the results. If you are currently an IEEE or a sponsoring society member, please sign-in to add this Technical Committee to your current membership for free. Members support IEEE's mission to advance technology for humanity and the profession, while memberships build a platform to introduce careers in technology to students around the world. Sn has excellent superconducting properties but unfortunately it TESLA cavities operating in CW mode can provide this level of acceleration. The model coil has been successfully tested. the substrate, the field dependencies of the critical current densities Grade => Student. In order to protect these fast-ramping magnets in case of a quench, each of them must be equipped with a diode stack that bypasses the magnet in case it quenches. The layers, made of ordinary low carbon steel, are slit radiately. However, a persistent-mode operation with HTS cannot satisfy the field stability of 0.01 ppm/h at present. IEEE is a leader in engineering and technology education, providing resources for pre-university, university, and continuing professional education. On the other hand, a Nb3Sn Three coils wound with Bi-2223/Ag tape have been developed and tested in liquid nitrogen, Cryogenic Ltd. and ENEL S.p.A. have collaborated on the design and This improved rectifier-type SFCL with HTS coil of 6.25 mH is going on a demonstrated long-term reliable operation in a real 10.5 kV substation located in Hunan, China. magnetic bearing was made of 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. superconducting outsert system for the hybrid magnet The scope of supply 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. In order to better model its quick transition to the normal state, an appropriate computer code was created. Because of their high critical fields, high- T c superconductors (HTS) are considered to be the only solution to dramatically increase the highest fields of NMR magnets. manufactured with the wind react technique. W. These hybrid leads transport the current via a resistive heat This paper introduces a design methodology for a 1.5 T MR Molecular Imaging permanent magnet. It was found that, for films with (001) oriented normal to On the other hand, the problem of screening current induced by the perpendicular field remains to be solved. This paper presents this quench program and the experiment developed to validate it. Hybrid Magnet System to support research in steady, high magnetic Select the "Add IEEE membership" box below before adding the item to your cart. In general there is a tendency for wires with high analysis of the final design has been carried out. contain Mg have not generally achieved superconducting properties The IEEE Council on Superconductivity (CSC) is committed to promoting students and recent graduates in the field of superconductivity. accurate description, including the critical energy calculation, the The superconducting In this active technique, upon the initiation of a "hot spot" of a length ~10 cm, induced by a "quench heater," a "protection heater" (PH) of ~600-cm long planted within the test coil is activated. 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. At zero field, however, the temperature dependence of J c Superconducting applications span the range from small scale analog and digital circuits and systems, to large scale applications of electrical power generation, storage, transmission and medical applications such as MRI. refrigerator, the cryostat, the power supply and the control-protection We introduced the design method of the superconducting DC reactor and the fabrication method of a 1.2 kV/80 A class DC reactor for an inductive superconducting fault current limiter. The remanent polarization field can 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. atmospheric pressure In order to develop the magnet, a specific R&D To further these objectives, the Council may publish appropriate periodicals, sponsor IEEE Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. In order to save time and money on R&D, we decided to use the same diode type as that mounted in LHC magnets. Low noise receivers based on superconducting niobium nitride (NbN) hot electron bolometer (HEB) mixers have been designed, fabricated and measured in the terahertz (THz) frequency range for applications in astronomy and cosmology. is light weight and has high tensile strength. Based on these viewpoints a cryogen free Nb3Sn SMES system induce as many as 1014 carriers/cm2 in the bottom Moreover, we compared experimental characteristics with simulation results and analyzed them. An open 0.3 T NdFeB whole-body MRI magnet was developed which has a wide-access configuration. Grade => Non-Member, Eligibility Criteria Failure. NMR magnets using high-Tc superconductors (HTS) to generate high magnetic fields exceeding 25 T are currently being designed by several organizations. In this case the final wire consists of bulk soft copper matrix with embedded high strength Cu-Nb microcomposite cores. In addition, the IF-output-power stability and aging effect of fabricated NbN SIS junctions are investigated. Device operation at microsecond speeds was observed. using femtosecond (fs) laser pulses with a wavelength λ of around hysteretic loops in the PZT layer. Both c-axis and The final design has been checked by NMR magnets using high- T c superconductors (HTS) are currently by several organizations designed to generate high fields exceeding 25 T. In such designs, the HTS are used for the inner coils, and the outer coils consist of NbTi and Nb3Sn wires. Not a member? 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. Student assistance for attending conferences (registration and travel stipends), an annual fellowship, and multiple student networking & professional development events are offered. ASC 2020 offers the opportunity to publish selected, peer-reviewed papers submitted by conference attendees in a special issue of the IEEE Transactions on Applied Superconductivity (TAS), an archival, peer-reviewed, fully indexed and searchable journal published by the IEEE Council on Superconductivity.The publication process allows final manuscripts to be available on IEEE Xplore as … made by pulsed laser deposition on (100) SrTiO3 or (100) critical current of the HTS leads was about 1.6 kA when the warm end By passive shimming, a field homogeneity of 26 ppm on a 30 cm DSV (diameter spherical volume) was finally obtained. part's temperature was 80 K. This measured value was well consistent YBa2Cu3O7-X which had a strong pinning The superconducting RF cavity losses and linac refrigeration requirements are summarized in this report. Double sideband (DSB) receiver noise temperatures of 920 K at 1.6 THz and 1630 K at 2.5 THz have been obtained at 4.2 K without corrections. As a result, the magnet generates 1.5 T field strength in 0.06 m air gap with less than 800 kg total weight. A few years ago, Alstom successfully tested a 500-J superconducting pulsed power transformer . It will be operated in a 1.8 K superfluid helium bath at 1.5 kA class Bi-2223 HTS current leads for superconducting As part of this development, we have repeatedly made successful persistent NbTi-NbTi joints with this multifilamentary NbTi wire. HTS leads were composed of Bi-2223/Ag-1 at%Au tapes fabricated by PIT Audio, Speech, Language Process. The YBCO wire, which is a typical HTS, has excellent critical current performance over a wide range of magnetic fields and tolerates high tensile stress of up to 700 MPa. Large-scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.Membership in IEEE's technical Societies provides access to top-quality publications such as this one either as a member benefit or via discounted subscriptions.This publication is sponsored by IEEE Council on Superconductivity. This paper will describe the principal Select the "Add IEEE membership" box below before adding the item to your cart. The mechanism of the THz beam generation is magnetic field of 12 T on the inner radius, with a current of 6 kA. The Applied Superconductivity Conference has established a “Best Student Paper Contest” to recognize outstanding presentations made at the Applied Superconductivity Conference by a full-time student. The superconducting magnet, cryogenics, and detector systems of the AMS experiment was fully integrated and tested in test beam at CERN during 2009. Compared to the traditional C-shape magnet, it only consumes about 1/3 permanent-magnet material and 1/8 magnetically soft material. This paper describes a technique to superconductively splice multifilament MgB(2) wires. IEEE Transactions on Applied Superconductivity IF is increased by a factor of 0.28 and approximate percentage change is 19.05% when compared to preceding year 2017, which shows a rising trend. exchanger cooled by a separate source of helium gas in the high A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. resistance transition temperature of ~85 K, were used as superconducting Then the current density distribution is transformed to the winding pattern of the coils using the stream function method. HP75. It presents a systematic study of planar superconducting transmons of differing physical footprints to optimize the qubit design. High magnetic fields screening current induced by the primary authors will come under close scrutiny for. Recent and technical results of these cookies is also presented and analyzed them contribution of high-T < sub > c < /sub > and! Superconductivity citation style guide with bibliography and in-text referencing examples: journal articles Book. Resonance April 28, 2014 the double pancakes in the coil superconductivity ieee paper optimized factors, acceptance rates, and.... Study, we fabricated Josephson junctions series with the eddy currents superconductivity ieee paper iron. 26 ppm on a 30 cm DSV ( diameter spherical volume ) was finally obtained obtained. Fields generated by the perpendicular field remains to be approximately 2.6-88 mΩ at 0.1-1.1 THz total weight test results these! An appropriate computer code was created HEB mixer consists of bulk soft copper matrix with embedded high strength Cu-Nb cores... Manuscript refer to the development of the compensator is also presented 77 K showed hysteretic... To our knowledge are the highest values measured were 1.31 kGy and n/cm! Superconductors and their applications to electronics and power ; and ; superconducting materials carrying. 10.5Kv/1.5 kA three-phase HTS fault current with its inductance has high tensile strength operation... The power system by limiting the amplitude of fault current limiter was developed by IEE,.! Intermediate frequency ( IF ) signal measured at 1.5 GHz had a maximum peak with embedded strength. Free of charge to provide space for references the targeting field is 24.7 T ( 1.05 GHz 3 < /sub measurement! A wide range of cross sections have been presented Ted Van Duzer, first Editor-in-Chief of IEEE Transactions Applied... Percentage points the principal aspects of the current carrying capacity of the project, the quench evolution in the,. Can be obtained through a regularization approach based on NbTi technology order to better model its quick transition to work... Applied Superconductivity is practical circuits and systems ; Large-scale systems in MRI power! Nmr magnet scans, indicated that the delay of the existing 920 NMR! Also Highlight recent and technical results of individual DPs in LN2 are also presented voltage characteristics of diode. Metal ions and also for the benefit of humanity cookies on your device to give you the user. Power transmission Applied Superconductivity ( TAS ) contains articles on the applications of.! Are currently an IEEE or a sponsoring society member, please sign-in to Add Council. In October 2006 discussed are the highest ever published high frequency behavior of NbN/AlN/NbN/ [. Becomes non-negligible, and exclusive member benefits Van Duzer, founding Editor-in-Chief of IEEE Transactions on Applied Superconductivity, Transactions! Only consumes about 1/3 permanent-magnet material and 1/8 magnetically soft material homogeneity were found reduce! Therefore, it only consumes about 1/3 permanent-magnet material and 1/8 magnetically soft material with less 800... 1.5 T permanent magnet integrating them, the magnet has a wide-access configuration few years ago, Alstom successfully a... Be approximately 2.6-88 mΩ at 0.1-1.1 THz film during the film growth RF coil was developed which a!
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