Superconductivity最新文献

{"title":"A full-wave HTS flux pump using a feedback control system","authors":"James H.P. Rice ,&nbsp;Ben P.P. Mallett ,&nbsp;Dominic A. Moseley ,&nbsp;Alexander Petrov ,&nbsp;Heng Zhang ,&nbsp;Steven Wray ,&nbsp;Rodney A. Badcock","doi":"10.1016/j.supcon.2023.100064","DOIUrl":"https://doi.org/10.1016/j.supcon.2023.100064","url":null,"abstract":"<div><p>Transformer-rectifier flux pumps are DC superconducting power supplies capable of charging superconducting magnets to high currents and stored magnetic energies. Here, we demonstrate a full-wave superconducting flux pump assembled from high-temperature superconducting (HTS) wire that utilizes superconducting switches controlled by applied magnetic field. A negative DC offset occurs in the superconducting secondary of the circuit during operation which is related to the output load current. A feedback control system is proposed and demonstrated to account for the negative DC offset. Increasing the primary current proportional to the load current during operation allowed for the maximum output of the flux pump to be increased from 35 A to more than 275 A. These results are reproduced using a coupled electrical- and magnetic–circuit model formulated in the MATLAB Simulink® package.</p></div>","PeriodicalId":101185,"journal":{"name":"Superconductivity","volume":"8 ","pages":"Article 100064"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49698993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrical, magnetic and thermal circuit modelling of a superconducting half-wave transformer rectifier flux pump using Simulink","authors":"A.C. Francis ,&nbsp;S. Venuturumilli ,&nbsp;D.A. Moseley ,&nbsp;S. Claridge ,&nbsp;B. Leuw ,&nbsp;R.A. Badcock ,&nbsp;C.W. Bumby","doi":"10.1016/j.supcon.2023.100053","DOIUrl":"https://doi.org/10.1016/j.supcon.2023.100053","url":null,"abstract":"<div><p>Superconducting flux pumps (FP) are capable of supplying superconducting circuits with high currents by additively supplying current over a number of cycles without introducing large amounts of heat into the cryogenic environment. Superconducting FPs can be broadly classified into two types: dynamo and transformer rectifier. Modelling the behaviour of these systems is an emerging field. In this work a model of a half wave magnetically switched transformer rectifier FP created in MATLAB/Simulink/Simscape is presented. Unlike existing models, the characteristics of all circuit elements are fully integrated allowing all superconducting elements to be accurately incorporated. The presented method uses pre-calculated look-up tables, populated with experimentally derived material qualities to simulate these superconducting elements. The thermal evolution of the switches, calculated simultaneously to the magnetic field switching interaction has also been included. This model is compared to the performance of a real world FP during the pumping of a load coil and is found to be accurate. Furthermore, the presented model illustrates how small amounts of heating at a magnetic switch can profoundly affect a FPs performance over many cycles.</p></div>","PeriodicalId":101185,"journal":{"name":"Superconductivity","volume":"7 ","pages":"Article 100053"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49698995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Charging process simulation of a coil by a self-regulating high-Tc superconducting flux pump","authors":"Pengbo Zhou ,&nbsp;Yanyu Zhou ,&nbsp;Mark Ainslie ,&nbsp;Asef Ghabeli ,&nbsp;Francesco Grilli ,&nbsp;Guangtong Ma","doi":"10.1016/j.supcon.2023.100061","DOIUrl":"https://doi.org/10.1016/j.supcon.2023.100061","url":null,"abstract":"<div><p>Self-regulating high-temperature superconducting (HTS) flux pumps enable direct current injection into a closed-loop superconducting coil without any electrical contact. In this work, the process of charging a coil by a self-regulating HTS flux pump is examined in detail by numerical modeling. The proposed model combines an <span><math><mrow><mi>H</mi></mrow></math></span>-formulation finite element method (FEM) model with an electrical circuit, enabling a comprehensive evaluation of the overall performance of self-regulating HTS flux pumps while accurately capturing local effects. The results indicate that the proposed model can capture all the critical features of a self-regulating HTS flux pump, including superconducting properties and the impact of the secondary resistance. When the numerical results are compared to the experimental data, the presented model is found to be acceptable both qualitatively and quantitatively. Based on this model, we have demonstrated how the addition of a milliohm range, normal-conducting secondary resistance in series with the charging loop can improve the charging process. In addition, its impact on the charging performance is revealed, including the maximum achievable current, charging speed, and the generated losses. The modeling approach employed in this study can be generalized to the optimization and design of various types of flux pumps, potentially expediting their practical application.</p></div>","PeriodicalId":101185,"journal":{"name":"Superconductivity","volume":"7 ","pages":"Article 100061"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49698793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Field and current driven versions of Brandt method for calculating transport ac loss of superconducting cylinder and strip","authors":"Xiao-Fen Li ,&nbsp;Shuo Li ,&nbsp;Du-Xing Chen","doi":"10.1016/j.supcon.2023.100052","DOIUrl":"https://doi.org/10.1016/j.supcon.2023.100052","url":null,"abstract":"<div><p>As an elegant and fast numerical tool for solving time-dependent electromagnetic field problems in hard superconductors, Brandt’s method has played an important role in understading the magnetic behavior of superconducting strips, discs, bars and cylinders in various aspect ratios. However, the application of this convenient method was mainly in magnetization processes. Traditionally, the solution of current transport problem needs to introduce a driving electric field <span><math><mrow><msub><mrow><mi>E</mi></mrow><mrow><mi>a</mi></mrow></msub></mrow></math></span>, which requires a low efficiency iterative process and <span><math><mrow><msub><mrow><mi>E</mi></mrow><mrow><mi>a</mi></mrow></msub></mrow></math></span> itself was not clearly explained. In this work, three integral algorithms based on the Brandt’s method are developed to deal with current transport problems, which directly adopt the applied current as a boundary condition. Namely the current (<em>I</em>)-driven version and two current-field-driven versions A and B. Moreover, the arbitrary applied magnetic field can also be included in the <em>I</em>-driven version. The derivation with all necessary formulas for the methods are given in this work. As an example, the new methods, as well as the traditional method are used for calculating transport ac loss <em>Q</em> of a superconducting cylinder or strip obeying a power-law relation of <span><math><mrow><mi>E</mi><mo>∝</mo><msup><mrow><mi>J</mi></mrow><mrow><mi>n</mi></mrow></msup></mrow></math></span> as a function of a given <span><math><mrow><mi>I</mi><mo>(</mo><mi>t</mi><mo>)</mo></mrow></math></span>. Derived from the Ampère law and the differential rather than the integral expression of the Faraday law, the current-driven version can be used for more accurate and much quicker computation. Being an intermediate quantity, <span><math><mrow><msub><mrow><mi>E</mi></mrow><mrow><mi>a</mi></mrow></msub><mo>(</mo><mi>t</mi><mo>)</mo></mrow></math></span> in the two current-field-driven versions is accurately calculated under the given <span><math><mrow><mi>I</mi><mo>(</mo><mi>t</mi><mo>)</mo></mrow></math></span>, but version B is much quicker than A. Problems relating to <span><math><mrow><msub><mrow><mi>E</mi></mrow><mrow><mi>a</mi></mrow></msub><mo>(</mo><mi>t</mi><mo>)</mo></mrow></math></span> and <em>Q</em> stabilization process are discussed.</p></div>","PeriodicalId":101185,"journal":{"name":"Superconductivity","volume":"7 ","pages":"Article 100052"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49698989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical simulation on AC loss in REBCO tapes carrying non-sinusoidal currents","authors":"Katsuya Uejima ,&nbsp;Yueming Sun ,&nbsp;Daisuke Miyagi ,&nbsp;Jakub Glowacki ,&nbsp;Nicholas J. Long ,&nbsp;Zhenan Jiang","doi":"10.1016/j.supcon.2023.100063","DOIUrl":"https://doi.org/10.1016/j.supcon.2023.100063","url":null,"abstract":"<div><p>AC loss is one of the greatest obstacles for high-temperature superconducting (HTS) applications. In some HTS applications, coated conductors carry non-sinusoidal currents. Thus, it is important to investigate the effect of various waveforms on AC loss in coated conductors. In this work, transport AC loss in a 4 mm - wide REBCO coated conductor carrying sinusoidal and non-sinusoidal currents, is numerically investigated. The current amplitudes, the frequency of the transport current, and <em>n</em>-value are varied. Non-sinusoidal transport current waveforms studied include square, five types of trapezoidal, and triangular waveforms. Simulated results show that, for a given current amplitude, AC loss for the square current waveform is the greatest, that for the triangular waveform is the smallest. The sequence of AC loss in the conductor for different current waveforms coincides with the penetration depth, which implies the penetration depth determines the AC loss of the coated conductor. Furthermore, the transport AC loss in the conductor was found to decrease with frequency as <span><math><mrow><msup><mrow><mi>f</mi></mrow><mrow><mo>-</mo><mn>2</mn><mo>/</mo><mi>n</mi></mrow></msup></mrow></math></span> for non-sinusoidal transport current.</p></div>","PeriodicalId":101185,"journal":{"name":"Superconductivity","volume":"8 ","pages":"Article 100063"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49698985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oxidation in Ca/K-1144 iron-based superconductors polycrystalline compounds","authors":"Zuhawn Sung ,&nbsp;Anastasiya Duchenko ,&nbsp;Giuseppe Celentano ,&nbsp;Jaeyel Lee ,&nbsp;Xiaobing Hu ,&nbsp;Nicola Pompeo ,&nbsp;Francesca Varsano ,&nbsp;Andrea Masi","doi":"10.1016/j.supcon.2023.100062","DOIUrl":"https://doi.org/10.1016/j.supcon.2023.100062","url":null,"abstract":"<div><p>Iron-based superconductors (IBSCs) are a class of material under investigation for the development of superconducting wires in the low-temperature-high magnetic fields power application. Among the various families of IBSCs, the 1144 CaKFe₄As₄ compound is a promising material able to achieve outstanding superconducting properties with a cheap and simple chemical composition. Oxidation, in these compounds, is considered an obstacle for high intergranular critical current density, <em>J_c,GB</em>. A study devoted to the evaluation of oxidation phenomena and their effects on the superconducting properties is thus needed in order to fully understand the involved mechanisms. From the evaluation of polycrystalline samples obtained by a mechanochemically assisted synthesis route, a degradation of the critical temperature and critical currents has been observed concurrently with oxygen accumulation at grain boundaries in open porosities. However, the crystalline structure at an atomic level seems not affected, as well as intragranular superconducting properties assessed by means of calorimetric methods. These results suggest that loss of superconducting properties in Ca/K-1144 compounds following oxidation is significantly associated with the worsening of grain connectivity.</p></div>","PeriodicalId":101185,"journal":{"name":"Superconductivity","volume":"8 ","pages":"Article 100062"},"PeriodicalIF":0.0,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49698983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dominant effect of residual secondary phase of powders on Jc and microstructure of Bi-2212 superconducting wires","authors":"L.H. Jin,&nbsp;G.Q. Liu,&nbsp;J.Q. Feng,&nbsp;X.Y. Xu,&nbsp;G.F. Jiao,&nbsp;S.N. Zhang,&nbsp;Q.B. Hao,&nbsp;P.X. Zhang,&nbsp;C.S. Li","doi":"10.1016/j.supcon.2023.100060","DOIUrl":"https://doi.org/10.1016/j.supcon.2023.100060","url":null,"abstract":"<div><p>Bi₂Sr₂CaCu₂O_8+δ (Bi-2212) superconducting round wires exhibited great potential for use in high-field applications. The purity of the precursor powders is critical for the transport current of the wires. However, the role of the residual secondary phase in the precursor powders is not fully understood. Here, the origin of the secondary phase was investigated in precursor powders that were prepared using ultrasonic spray pyrolysis (USP) and calcination processing. The microstructure and phase evolution of the precursor powders during the crystallization process were analyzed. Moreover, the effects that the residual secondary phase has on melting behavior, morphology properties, and the supercurrent flow of Bi-2212 multi-filamentary wires are systematically discussed. The residual secondary phase in the filament caused further crystallization, and this led to the formation of more and larger Bi-2201 grains at the onset of the melting process. The poor microstructure and low critical current of the final Bi-2212 wires can be attributed to the presence of the residual copper-rich phase. Bi-2212 wires that were prepared with fully crystallized powders had a high critical current density (<em>J</em>_c) of 6773 A/mm² at 4.2 K, self-field. It was revealed that control of the secondary phases in precursor powders is greatly significant for achieving superior values of <em>J</em>_c.</p></div>","PeriodicalId":101185,"journal":{"name":"Superconductivity","volume":"8 ","pages":"Article 100060"},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49698975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Gd addition on the superconducting properties of Ti-based V, Nb, Ta alloys","authors":"SK Ramjan ,&nbsp;L.S. Sharath Chandra ,&nbsp;Rashmi Singh ,&nbsp;M.K. Chattopadhyay","doi":"10.1016/j.supcon.2023.100048","DOIUrl":"https://doi.org/10.1016/j.supcon.2023.100048","url":null,"abstract":"<div><p>The critical current density (<span><math><mrow><msub><mrow><mi>J</mi></mrow><mrow><mi>c</mi></mrow></msub></mrow></math></span>) of the body centered cubic (<em>bcc</em>) V_0.6Ti_0.4 alloy enhances significantly after the addition of rare earth Gd as the latter is immiscible in the matrix [S. Paul, et.al, IEEE Trans. Appl. Supercond. <strong>31</strong>, 5 (2021)]. Very low solubility of Gd in other <em>bcc</em> elements like Ta and Nb is also well known [Jr. KA Gschneidner in Prog Sci Technol Rare Earths, vol. 1, pp. 222–258, 1964 <span><math><mrow><mi>&amp;</mi></mrow></math></span> M Neuberger, et.al in Handbook of Electronic Materials, Vol 4, 1972]. We use these facts to find the effect of adding 1 at.% Gd into the Nb_0.6Ti_0.4 and Ta_0.4Ti_0.6 alloys on the superconducting properties e.g., the transition temperature (<span><math><mrow><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi></mrow></msub></mrow></math></span>), <span><math><mrow><msub><mrow><mi>J</mi></mrow><mrow><mi>c</mi></mrow></msub></mrow></math></span>, flux pinning force density (<span><math><mrow><msub><mrow><mi>F</mi></mrow><mrow><mi>p</mi></mrow></msub></mrow></math></span>) and the microstructure. In spite of Gd being ferromagnetic, the <span><math><mrow><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi></mrow></msub></mrow></math></span> in these alloys change only marginally (increase by 0.3 K in Ta_0.4Ti_0.6 and decrease by 0.15 K in Nb_0.6Ti_0.4 after Gd addition. The <span><math><mrow><msub><mrow><mi>J</mi></mrow><mrow><mi>c</mi></mrow></msub></mrow></math></span> (<span><math><mrow><mi>H</mi><mo>=</mo><mn>1</mn></mrow></math></span> T, <em>T</em> = 4 K) increases by 5 and 1.5 times respectively in the Gd containing Nb_0.6Ti_0.4 and Ta_0.4Ti_0.6 alloys, which is quite small as compared to the increase observed in the V_0.6Ti_0.4 (20 times) system. With Gd addition, the grain size reduces approximately by 65% and 10% respectively in Nb_0.6Ti_0.4 and Ta_0.4Ti_0.6. Our analysis indicates that grain boundaries are the major flux line pinning centres in these alloys and the role of Gd in increasing the <span><math><mrow><msub><mrow><mi>J</mi></mrow><mrow><mi>c</mi></mrow></msub></mrow></math></span> depends on the effectiveness of Gd in reducing the grain size. The grain boundary density depends strongly on the distribution of Gd precipitates, which is quite different from each other for two alloy systems under study. Moreover, our results suggest that the addition of Gd to commercial Nb-Ti (Nb_0.37Ti_0.63) alloy is a new promising route for achieving higher <span><math><mrow><msub><mrow><mi>J</mi></mrow><mrow><mi>c</mi></mrow></msub></mrow></math></span> values.</p></div>","PeriodicalId":101185,"journal":{"name":"Superconductivity","volume":"6 ","pages":"Article 100048"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49880874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-temperature superconductors: Nb3Sn, Nb3Al, and NbTi","authors":"Nobuya Banno","doi":"10.1016/j.supcon.2023.100047","DOIUrl":"https://doi.org/10.1016/j.supcon.2023.100047","url":null,"abstract":"<div><p>Low-temperature superconducting (LTS) wires are of significant importance in high-field magnet applications. Current developments of the LTS wires are attributed to many studies. Particularly, Nb₃Sn is an attractive superconductor with substantial potential for performance improvement in view of an ideal microstructure that maximizes flux pinning properties. To date, various reviews have been reported on the physical properties of low-temperature superconductors. Therefore, this review focuses on understanding the fundamental phase formations and microstructural controls of low-temperature superconductors from the perspectives of growth kinetics, nucleation theory, and chemical potentials to facilitate the syntheses of these superconductors and advancement of wire production. Taking Nb₃Sn as an example, the effect of Cu addition to Nb₃Sn on Nb/Sn reactive diffusion is briefly described. Then, representative Nb₃Sn formations are schematically summarized to broaden our understanding of the development behaviors of Nb₃Sn. These behaviors are qualitatively reviewed in terms of Sn chemical potential. After mentioning the potential for performance improvement of Nb₃Sn, the influences of element additions, specifically those of Zr and Hf additions, resulting in breakthrough microstructural refinements, on Nb/Sn diffusion are investigated. Subsequently, strengthening of the matrix via element additions is reviewed. Thereafter, taking Nb₃Al as an example, the features of Nb₃Al formation and basic development processes, including low-temperature processes, metastable phase transformations, and microstructural control, are described. Strain sensitivity, one of the most important properties of Nb₃Al, is also briefly reviewed. Then, taking Nb alloy as an example, <em>α</em>-Ti precipitation in a binary Nb–Ti system is concisely summarized. Subsequently, recently reported new artificial pin incorporation based on a powder method is introduced, followed by a unique study of the application of high-temperature-tolerable Nb superconducting alloys in superconducting joints. This review makes a novel contribution to the literature as it provides a comprehensive understanding of phase formation in low-temperature superconductors.</p></div>","PeriodicalId":101185,"journal":{"name":"Superconductivity","volume":"6 ","pages":"Article 100047"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49880875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of a finite impulse response filter for rapid single-flux-quantum signal processors based on stochastic computing","authors":"Ruidi Qiu,&nbsp;Peiyao Qu,&nbsp;Xiangyu Zheng,&nbsp;Guangming Tang","doi":"10.1016/j.supcon.2023.100045","DOIUrl":"https://doi.org/10.1016/j.supcon.2023.100045","url":null,"abstract":"<div><p>Rapid-Single-Flux-Quantum (RSFQ) circuit technology is well known for its low power consumption and latency, which enables digital signal processing up to tens of GHz. As a fundamental digital filter, the Finite Impulse Response (FIR) filter has wide applications in communication systems. A design of an FIR filter based on RSFQ circuit technology is proposed. However, the FIR filter consumes large amounts of adders and multipliers. Based on Stochastic Computing (SC) theory with which adder and multiplier are much simpler, the hardware cost of FIR filter is dramatically reduced. A novel stochastic number generator (SNG), a stochastic-to-binary converter (SBC), and the FIR filter were designed and verified via logic simulation with a target frequency of 10 GHz. The results indicated the FIR filter performs correct operations. The proposed FIR filter consists of 2255 Josephson junctions (JJs) without wiring cells (i.e., Josephson Transmission Lines (JTLs), Passive Transmission Lines (PTLs)), which is acceptable, making it possible to be used in RSFQ digital signal processors.</p></div>","PeriodicalId":101185,"journal":{"name":"Superconductivity","volume":"6 ","pages":"Article 100045"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49880862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}