Valery Petrykin

Large-scale PLD production of HTS-tapes for the fusion industry

Ralph Delmdahl, Robin Rammelsberg, Oliver Haupt, Roman Valikov et autres

A Possible Approach to Improve Angular Dependent Critical Current Characteristics of REBCO Coated Conductors by Face-to-Face Double Stacked Architecture

Miyuki Nakamura, Takanobu Kiss, Zeyu Wu, Ivan S. Veshchunov et autres

REBa2Cu3O7-δ (REBCO, RE: rare earth element) coated conductors (CCs) have superior in-field performance compared to low-temperature superconductors and Bi-based superconductors, however, due to its crystal structure, REBCO CCs exhibit significant anisotropy, i.e., critical current density (Jc) is generally high forB//a-band low forB//c-axis. …

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REBCO superconductors by pulsed laser deposition: Key innovations and large-scale applications

Albina Jetybayeva, Aliya Orazalinovna Mukanova, Arailym Nurpeissova, Zhumabay Bakenov et autres

The rapid advancement of second-generation high-temperature superconductors, especially REBCO materials, underpins innovations in energy, medicine, and transport. Pulsed laser deposition (PLD) stands out as a premier method for producing high-quality REBCO thin films with controlled composition and microstructure-crucial for achieving high critical …

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Reduction of Jc anisotropy in REBCO coated conductors via bilayer structure of columnar and random pinning centers

Tatsunori Okada, Marat Gaifullin, Vladimir Vyatkin, H. T. Dao et autres

To suppress the anisotropy of the angular dependence of the critical current density Jc(θ) under high-temperature (T ∼ 77 K) and low-magnetic-field (B ≲ 3 T) conditions, where superconducting motor and generator applications are anticipated, we fabricated a bilayer structure comprised of …

Reduction of J c anisotropy in REBCO coated conductors via bilayer structure of columnar and random pinning centers

Tatsunori Okada, Marat B Gaifullin, Vladimir Vyatkin, H. T. Dao et autres

Abstract To suppress the anisotropy of the angular dependence of the critical current density J c ( θ ) under high-temperature ( T ∼ 77 K ) and low-magnetic-field ( B ≲ 3 T ) conditions, where superconducting motor and generator applications …

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Enhancement of 2G-HTS wire performance in strong magnetic fields through heavy ion irradiation

Valery Petrykin, Maki Okube, Pavel N. Degtyarenko, Naomi Yoshinaka et autres

Abstract This study investigates the impact of heavy ion irradiation on the superconducting performance of second-generation high-temperature superconducting (2G-HTS) wires in strong magnetic fields. We have performed irradiation experiments using 18 MeV Au, 12 MeV Ni and 15 MeV O ions accelerated …

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Evaluation of Joining Resistivity of Solder-Processed Face-to-Face Double-Stacked REBCO-Coated Conductors Under the Influence of Current Blocking Obstacles in the Tape Strands

Miyuki Nakamura, Zeyu Wu, Ivan S. Veshchunov, Vladimir Vyatkin et autres

During the fabrication of commercial REBa2Cu3O7-x(REBCO; RE: rare-earth element)-coated conductors (CCs), inhomogeneities with low critical current (Ic) are occasionally introduced, which may result in electromagnetic instability, particularly at low temperatures. To mitigate the degradation of the current carrying capabiity caused by these …

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Characterization and Performance Improvement of Face-to-Face Double Stack REBCO Coated Conductors

Miyuki Nakamura, Ivan S. Veshchunov, Marat B Gaifullin, H. T. Dao et autres

In order to improve the mechanical and electromagnetic robustness of REBCO coated conductors (CCs) for their application in superconducting equipment, we have developed and characterized Face-to-Face Double Stack (FFDS) CCs by stacking the superconducting surfaces of two single superconducting CCs together. In …

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Effects of Precursor Film Thickness and Heat-Treatment Temperature On Joint Rate for a GdBa2Cu3Oy Superconducting Joint

Yutaro Doi, Ryo Teranishi, Tomohiro Miyajima, A. Matsumoto et autres

GdBa2Cu3O7-δ(GdBCO) coated conductors (CCs) are promising wire materials because of their high critical temperature and critical current density in magnetic fields. The CCs must contain superconducting joints to create long wires. Previously, we fabricated a GdBCO CC with a superconducting joint by …

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Development and large volume production of extremely high current density YBa2Cu3O7 superconducting wires for fusion

Alexander Molodyk, S. V. Samoilenkov, Anton V. Markelov, Pavel N. Degtyarenko et autres

Abstract The fusion power density produced in a tokamak is proportional to its magnetic field strength to the fourth power. Second-generation high temperature superconductor (2G HTS) wires demonstrate remarkable engineering current density (averaged over the full wire), J E , at very …

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Dependence of joint temperature on microstructure of GdBa 2 Cu 3 O y coated conductors

Ryo Teranishi, Tomohiro Miyajima, Yukio Sato, Kenji Kaneko et autres

The influence of BaSnO 3 artificial pinning centres on the resistive transition of 2G high-temperature superconductor wire in magnetic field

Pavel N. Degtyarenko, S. Yu. Gavrilkin, Alexey Yu. Tsvetkov, Nikolay Mineev et autres

Abstract In this work, we present a study of the resistive transition in magnetic field of 2G high-temperature superconductor wire samples with BaSnO 3 (BSO) artificial pinning centres (APCs) in a GdBa 2 Cu 3 O 7−x (GdBCO) superconductor. The GdBCO layer …

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