NDLI: Acoustic emission occurrence induced from a NbTi superconducting coil under alternating current operation

Content Provider	IEEE Xplore Digital Library
Author	Arai, K. Yamaguchi, H. Kaiho, K. Fuji, H. Sadakata, N. Saitoh, T.
Copyright Year	2002
Abstract	Acoustic emission (AE) induced from an alternating current (ac) superconducting coil was studied during operation in liquid helium. The operating current of the coil was increased from zero with a constant ramp rate at a commercial frequency of 50 Hz until quenching in the coil. The AE signals induced from the coil around the time of the quenching initiation were compared with the operating current, the coil voltage, and the phase difference between the current and the voltage in order to estimate the changes in those signals which resulted from the quenching process. The AE signals continued almost at very low levels before the quenching, At the moment of the quenching initiation, the AE signals clearly and drastically rose approximately 10-15 ms earlier than the decrease in the operating current or the phase difference. The AE signals induced by the wire motion during 50-Hz ac operation were also compared with the operating current.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	4648
Ending Page	4653
Page Count	6
File Size	165313
File Format	PDF
ISSN	10518223
Volume Number	9
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Acoustic emission Niobium compounds Titanium compounds Superconducting coils Signal processing Voltage Frequency Phase estimation Wire
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Acoustic emission induced from an alternating current superconducting coil and quenching patterns

AC losses, flux jumps and quench behavior of copper-clad NbTi superconducting wire under coil simulation conditions

Acoustic emission induced from alternating current superconducting coils resulting from vibration of windings

Time-frequency distribution of acoustic emission signals induced from a rotating NbTi superconducting winding

Test of a NbTi Superconducting Quadrupole Magnet Based on Alternating Helical Windings

AC loss behaviour of the high-current NbTi- superconductor for the Swiss LCT fusion coil

Stability of a NbTi forced-cooled superconducting coil by subcooled supercritical helium

Field Trimming by Iron Pieces and Coils in a Superconducting Undulator

Quench experiments on superconductive coils

Acoustic emission occurrence induced from a NbTi superconducting coil under alternating current operation

Similar Documents

Acoustic emission induced from an alternating current superconducting coil and quenching patterns

AC losses, flux jumps and quench behavior of copper-clad NbTi superconducting wire under coil simulation conditions

Acoustic emission induced from alternating current superconducting coils resulting from vibration of windings

Time-frequency distribution of acoustic emission signals induced from a rotating NbTi superconducting winding

Test of a NbTi Superconducting Quadrupole Magnet Based on Alternating Helical Windings

AC loss behaviour of the high-current NbTi- superconductor for the Swiss LCT fusion coil

Stability of a NbTi forced-cooled superconducting coil by subcooled supercritical helium

Field Trimming by Iron Pieces and Coils in a Superconducting Undulator

Quench experiments on superconductive coils

Acoustic emission occurrence induced from a NbTi superconducting coil under alternating current operation