RUPAC2018 - List of Authors (Shirshov, L.S.)

Paper	Title	Page
WEPSB40	Methods and Apparatuses for the Study of Critical Characteristics of High-Current Superconductors	357
	L.S. Shirshov IHEP, Moscow Region, Russia
	The complex of measuring devices has been created in IHEP to study the characteristics of low-temperature superconductors for currents up to 20 kA. The current-voltage characteristics of short superconducting (SC) cable samples based on multifilament NB-Ti alloy superconductors, were measured. Critical currents were measured, depending on a temperature and a magnetic field up to 8 T. The equipment was designed for measuring the minimum quenching energy (MQE) of SC sample in the normal state. That allowed studying the stability of the material to a short-term heat production on a separate piece of wire that is part of the cable. The parameters of different designs of SC transformers for obtaining currents above 10 kA in the samples of partially stabilized SC cable coils of dipole and quadrupole magnets of accelerator storage complexes are given. The capabilities and limitations of different equipment options are compared.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-WEPSB40
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WEPSB43	AC Losses Measurements in HTS Coils	363
	I. Bogdanov, E. Kashtanov, S. Kozub, V.A. Pokrovsky, P.A. Shcherbakov, L.S. Shirshov, V.I. Shuvalov, L. Tkachenko IHEP, Moscow Region, Russia
	The possibility of production of the coils based on high-temperature superconductors (HTS) for accelerator applications is now under preliminary study in many accelerator centres and laboratories. The alternating magnetic field in these magnets causes an energy dissipation (AC losses). The accurate measurement of AC losses is important for a comparison choice among different HTS conductors and for estimations of the total level of losses into final magnet too. This article presents the measurement of transport AC losses (i.e. the losses in magnetic field which is generated by the alternating transport current) in HTS coils. Two model HTS coils with the racetrack geometry have been fabricated from 2nd generation HTS conductor supplied by two vendors. The measurement was performed by electrical method at the sinusoidal current with the amplitude up to 32 A and at the frequencies lain into interval from 5 up to 100 Hz. The measurement scheme and results are presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-WEPSB43
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Methods and Apparatuses for the Study of Critical Characteristics of High-Current Superconductors

357

L.S. Shirshov
IHEP, Moscow Region, Russia

The complex of measuring devices has been created in IHEP to study the characteristics of low-temperature superconductors for currents up to 20 kA. The current-voltage characteristics of short superconducting (SC) cable samples based on multifilament NB-Ti alloy superconductors, were measured. Critical currents were measured, depending on a temperature and a magnetic field up to 8 T. The equipment was designed for measuring the minimum quenching energy (MQE) of SC sample in the normal state. That allowed studying the stability of the material to a short-term heat production on a separate piece of wire that is part of the cable. The parameters of different designs of SC transformers for obtaining currents above 10 kA in the samples of partially stabilized SC cable coils of dipole and quadrupole magnets of accelerator storage complexes are given. The capabilities and limitations of different equipment options are compared.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-WEPSB40

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB43

AC Losses Measurements in HTS Coils

363

I. Bogdanov, E. Kashtanov, S. Kozub, V.A. Pokrovsky, P.A. Shcherbakov, L.S. Shirshov, V.I. Shuvalov, L. Tkachenko
IHEP, Moscow Region, Russia

The possibility of production of the coils based on high-temperature superconductors (HTS) for accelerator applications is now under preliminary study in many accelerator centres and laboratories. The alternating magnetic field in these magnets causes an energy dissipation (AC losses). The accurate measurement of AC losses is important for a comparison choice among different HTS conductors and for estimations of the total level of losses into final magnet too. This article presents the measurement of transport AC losses (i.e. the losses in magnetic field which is generated by the alternating transport current) in HTS coils. Two model HTS coils with the racetrack geometry have been fabricated from 2nd generation HTS conductor supplied by two vendors. The measurement was performed by electrical method at the sinusoidal current with the amplitude up to 32 A and at the frequencies lain into interval from 5 up to 100 Hz. The measurement scheme and results are presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-WEPSB43

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)