scholarly journals Temporal behaviour of multipole components of the magnetic field in a small dipole magnet wound with coated conductors

2015 ◽  
Vol 28 (3) ◽  
pp. 035003 ◽  
Author(s):  
Naoyuki Amemiya ◽  
Hiroaki Otake ◽  
Takuya Sano ◽  
Taketsune Nakamura ◽  
Toru Ogitsu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Coated Conductors ◽  
Dipole Magnet ◽  
Temporal Behaviour ◽  
Small Dipole ◽  
The Magnetic Field

scholarly journals Precision Analysis and Design of Rotating Coil Magnetic Measurements System

2020 ◽  
Vol 10 (23) ◽  
pp. 8454
Author(s):  
Soontorn Odngam ◽  
Chaiyut Preecha ◽  
Prapaiwan Sanwong ◽  
Woramet Thongtan ◽  
Jiraphon Srisertpol
Keyword(s):  
Magnetic Field ◽  
Control System ◽  
Magnetic Measurements ◽  
Speed Control ◽  
Measuring Instruments ◽  
Dipole Magnet ◽  
Analysis And Design ◽  
Speed Control System ◽  
The Impact ◽  
The Magnetic Field

This research presents the design and construction of measuring instruments for a dipole magnetic field using a rotating coil technique. This technique is a closed-loop speed-control system where a Proportional-Integral (PI) controller works together with the intensity measurement of the magnetic field through the rotating coil. It was used to analyze the impact on the accuracy of the electromagnetic at speed ranges of 60, 90, and 120 rpm. The error estimation in the measurement of the normal dipole and skew dipole magnet caused by the steady-state error of the speed control system and the rotational search coil in whirling motion are demonstrated. Rotating unbalance, shaft coupling, and misalignment from its setup disturbed the performance of the speed control system as a nonlinear system.

Observations from the Analyses of Magnetic Field and AC Loss Distributions in the NHMFL 32 T All-Superconducting Magnet HTS Insert

2013 ◽  
Vol 23 (3) ◽  
pp. 4300704-4300704 ◽  
Author(s):  
Andrew Gavrilin ◽  
Jun Lu ◽  
Hongyu Bai ◽  
David Hilton ◽  
W Markiewicz ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Superconducting Magnet ◽  
Coated Conductors ◽  
Ac Loss ◽  
Ac Losses ◽  
Magnet System ◽  
Field Gradients ◽  
The Magnetic Field ◽  
Helium Vapor

A 17 T high-temperature superconducting two-coil magnet (insert) to be operated in a 15 T low-temperature superconducting multisection magnet (outsert) is the most demanding part of the National High Magnetic Field Laboratory all-superconducting 32 T magnet system. The HTS coils are of the pancake type and to be wound with REBCO coated conductors/tapes manufactured by SuperPower, Inc. The distribution of AC losses in the HTS windings during the magnet charging/discharging process are computed and analyzed with due regard for the AC loss density dependence on the magnetic field and the field angle. The calculations are based on the measured magnetization of a representative sample against magnetic field and field angle. The results enable determination of heat load on the magnet and its cryogenic system. Since the magnet is of the pool-cooled type, a related helium vapor bubble problem can develop owing to the high field and field gradients, and the diamagnetic susceptibility of helium.

Magnetic Field Dependence of Critical Current Density of TFA-MOD Processed YBCO Coated Conductors

2000 ◽  
Vol 659 ◽  
Author(s):  
Yutaka Yamada ◽  
SeokBeom Kim ◽  
Takeshi Araki ◽  
Toyotaka Yuasa ◽  
Yasuo Takahashi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Coated Conductors ◽  
Coating Solution ◽  
Metalorganic Deposition ◽  
The Difference ◽  
The Magnetic Field ◽  
Ybco Coated Conductors ◽  
Superior Property

ABSTRACTYBCO films on LaAlO3and IBAD (YSZ/Hastelloy) substrate were made by TFA-MOD (metalorganic deposition using trifluoroacetate) process. Improved coating solution resulted in high Jc at 77.3K and 0T of 7 MA/cm2 and 1.7 MA/cm2 for LaAlO3 and IBAD substrates, respectively. The magnetic field dependence of Jc at 77.3K also showed superior property: 105 A/cm2 at 4T (B//c-axis) for the LaAlO3substrate and at 3T (B//c-axis)) for IBAD substrate. Furthermore, the difference in Jc between single crystal LaAlO3and IBAD was small up to 3T. The present results imply that TFA-MOD process is promising for the practical YBCO coated conductor process.

Measurement of the magnetic-field parameters of the NICA Booster dipole magnet

2016 ◽  
Vol 13 (7) ◽  
pp. 855-861 ◽  
Author(s):  
S. A. Kostromin ◽  
V. V. Borisov ◽  
A. V. Bichkov ◽  
O. M. Golubitsky ◽  
A. N. Donyagin ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Dipole Magnet ◽  
The Magnetic Field

Optimal Vortex Pinning in YBa2Cu3O7-x Superconducting Films Up to Very High Magnetic Fields

2022 ◽  
Author(s):  
Ferran Vallès ◽  
Anna Palau ◽  
Dmytro Abraimov ◽  
Jan Jaroszynski ◽  
Anca-Monia Constantinescu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Region Of Interest ◽  
Vortex Pinning ◽  
Coated Conductors ◽  
High Magnetic Fields ◽  
Twin Boundaries ◽  
Systematic Analysis ◽  
The Magnetic Field ◽  
Very High

Abstract The magnetic flux pinning capabilities of YBa2Cu3O7−x (YBCO) coated conductors (CCs) vary strongly between different regions of the magnetic field-temperature (H-T) diagram and with the orientation of the magnetic field (θ). Here, we determine the optimal pinning landscape for a given H-T region by investigating the critical current density Jc(H,θ,T) in the 5-77 K temperature range, from self-field to very high magnetic fields (35 T). Our systematic analysis reveals the best directions to target to artificially engineer CCs in any region of interest. In solution-derived nanocomposites, we identify the relevance of coexisting high amounts of short stacking faults, Cu-O vacancy clusters and segmentation of twin boundaries, in combination with nanoparticles, for enhanced pinning performance at very high magnetic fields and low temperatures. Moreover, we demonstrate that twin boundaries preserve a high pinning energy in thick YBCO films, which is beneficial for the pinning performance at high magnetic fields and high temperatures.

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