Thermal analysis of PCS for an HTS pancake coil in persistent current mode

Woo Seok Kim; Yungil Kim; Sang Ho Park; Seyeon Lee; Ji Kwang Lee; Chan Park; Bang Wook Lee; Kyoung Jun Kim; Haigun Lee; Hee Gyoun Lee; Gye Won Hong; Kyeongdal Choi

doi:10.1109/TASC.2010.2041769

Thermal analysis of PCS for an HTS pancake coil in persistent current mode

Woo Seok Kim, Yungil Kim, Sang Ho Park, Seyeon Lee, Ji Kwang Lee, Chan Park, Bang Wook Lee, Kyoung Jun Kim, Haigun Lee, Hee Gyoun Lee, Gye Won Hong, Kyeongdal Choi

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

It is well known that high temperature superconductors (HTS) are promising for a magnet application, but it has been almost impossible so far to apply them to the magnet in persistent current mode because of poor qualities of their superconducting joint at higher current as well as lower index values. In this paper, in order to get rid of the joints from an HTS superconducting magnet, a prototype HTS pancake coil using YBCO coated conductors by the technique of wind-and-flip pancake coil was made and will be tested later. This paper presents a design, fabrication, and thermal analysis of the prototype pancake coil. The coil will be cooled down around 20 K by conduction cooling using a GM cryocooler. The expected current drift rate for an MRI application has not been achieved, probably caused by large flux flow resistance of coated conductor at higher temperature, 77.3 K. A temperature dependency of temporal stability of the persistent current will be measured by monitoring the long-term drift of the magnetic field at different operating temperatures by Hall sensors.

Original language	English
Article number	5433242
Pages (from-to)	1009-1012
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	20
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2010.2041769
Publication status	Published - 2010 Jun

Bibliographical note

Funding Information:
Manuscript received October 20, 2009. First published March 18, 2010; current version published May 28, 2010. This research was supported by a grant from Center for Applied Superconductivity Technology of the 21st Century Frontier R&D Program funded by the Ministry of Education, Science and Technology, Republic of Korea. W.-S. Kim and C. Park are with the Department of Materials Science & Engineering, Seoul National University, Seoul, 151-742, Korea (e-mail: [email protected]). Y. Kim, S.-H. Park, S. Lee, H.-G. Lee, G.-W. Hong, and K. Choi are with the Graduated School of Energy, Korea Polytechnic University, Siheung, Korea. J.-K. Lee is with the Department of Fire Protection and Safety, Woosuk University, Jeollabuk-do, Korea. B.-W. Lee is with the Division of Electrical Engineering and Computer Science, Hanyang University, Ansan, Korea. K.-J. Kim and H. Lee are with the Department of Materials Science and Engineering, Korea University, Seoul, Korea. Digital Object Identifier 10.1109/TASC.2010.2041769

Keywords

Conduction cooling
Persistent current mode
Superconducting joint
Wind-and-flip
YBCO coated conductor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/TASC.2010.2041769

Cite this

@article{4213293f64de478485c084340b173f0f,

title = "Thermal analysis of PCS for an HTS pancake coil in persistent current mode",

abstract = "It is well known that high temperature superconductors (HTS) are promising for a magnet application, but it has been almost impossible so far to apply them to the magnet in persistent current mode because of poor qualities of their superconducting joint at higher current as well as lower index values. In this paper, in order to get rid of the joints from an HTS superconducting magnet, a prototype HTS pancake coil using YBCO coated conductors by the technique of wind-and-flip pancake coil was made and will be tested later. This paper presents a design, fabrication, and thermal analysis of the prototype pancake coil. The coil will be cooled down around 20 K by conduction cooling using a GM cryocooler. The expected current drift rate for an MRI application has not been achieved, probably caused by large flux flow resistance of coated conductor at higher temperature, 77.3 K. A temperature dependency of temporal stability of the persistent current will be measured by monitoring the long-term drift of the magnetic field at different operating temperatures by Hall sensors.",

keywords = "Conduction cooling, Persistent current mode, Superconducting joint, Wind-and-flip, YBCO coated conductor",

author = "Kim, {Woo Seok} and Yungil Kim and Park, {Sang Ho} and Seyeon Lee and Lee, {Ji Kwang} and Chan Park and Lee, {Bang Wook} and Kim, {Kyoung Jun} and Haigun Lee and Lee, {Hee Gyoun} and Hong, {Gye Won} and Kyeongdal Choi",

note = "Funding Information: Manuscript received October 20, 2009. First published March 18, 2010; current version published May 28, 2010. This research was supported by a grant from Center for Applied Superconductivity Technology of the 21st Century Frontier R&D Program funded by the Ministry of Education, Science and Technology, Republic of Korea. W.-S. Kim and C. Park are with the Department of Materials Science & Engineering, Seoul National University, Seoul, 151-742, Korea (e-mail: [email protected]). Y. Kim, S.-H. Park, S. Lee, H.-G. Lee, G.-W. Hong, and K. Choi are with the Graduated School of Energy, Korea Polytechnic University, Siheung, Korea. J.-K. Lee is with the Department of Fire Protection and Safety, Woosuk University, Jeollabuk-do, Korea. B.-W. Lee is with the Division of Electrical Engineering and Computer Science, Hanyang University, Ansan, Korea. K.-J. Kim and H. Lee are with the Department of Materials Science and Engineering, Korea University, Seoul, Korea. Digital Object Identifier 10.1109/TASC.2010.2041769",

year = "2010",

month = jun,

doi = "10.1109/TASC.2010.2041769",

language = "English",

volume = "20",

pages = "1009--1012",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "3",

}

TY - JOUR

T1 - Thermal analysis of PCS for an HTS pancake coil in persistent current mode

AU - Kim, Woo Seok

AU - Kim, Yungil

AU - Park, Sang Ho

AU - Lee, Seyeon

AU - Lee, Ji Kwang

AU - Park, Chan

AU - Lee, Bang Wook

AU - Kim, Kyoung Jun

AU - Lee, Haigun

AU - Lee, Hee Gyoun

AU - Hong, Gye Won

AU - Choi, Kyeongdal

N1 - Funding Information: Manuscript received October 20, 2009. First published March 18, 2010; current version published May 28, 2010. This research was supported by a grant from Center for Applied Superconductivity Technology of the 21st Century Frontier R&D Program funded by the Ministry of Education, Science and Technology, Republic of Korea. W.-S. Kim and C. Park are with the Department of Materials Science & Engineering, Seoul National University, Seoul, 151-742, Korea (e-mail: [email protected]). Y. Kim, S.-H. Park, S. Lee, H.-G. Lee, G.-W. Hong, and K. Choi are with the Graduated School of Energy, Korea Polytechnic University, Siheung, Korea. J.-K. Lee is with the Department of Fire Protection and Safety, Woosuk University, Jeollabuk-do, Korea. B.-W. Lee is with the Division of Electrical Engineering and Computer Science, Hanyang University, Ansan, Korea. K.-J. Kim and H. Lee are with the Department of Materials Science and Engineering, Korea University, Seoul, Korea. Digital Object Identifier 10.1109/TASC.2010.2041769

PY - 2010/6

Y1 - 2010/6

N2 - It is well known that high temperature superconductors (HTS) are promising for a magnet application, but it has been almost impossible so far to apply them to the magnet in persistent current mode because of poor qualities of their superconducting joint at higher current as well as lower index values. In this paper, in order to get rid of the joints from an HTS superconducting magnet, a prototype HTS pancake coil using YBCO coated conductors by the technique of wind-and-flip pancake coil was made and will be tested later. This paper presents a design, fabrication, and thermal analysis of the prototype pancake coil. The coil will be cooled down around 20 K by conduction cooling using a GM cryocooler. The expected current drift rate for an MRI application has not been achieved, probably caused by large flux flow resistance of coated conductor at higher temperature, 77.3 K. A temperature dependency of temporal stability of the persistent current will be measured by monitoring the long-term drift of the magnetic field at different operating temperatures by Hall sensors.

AB - It is well known that high temperature superconductors (HTS) are promising for a magnet application, but it has been almost impossible so far to apply them to the magnet in persistent current mode because of poor qualities of their superconducting joint at higher current as well as lower index values. In this paper, in order to get rid of the joints from an HTS superconducting magnet, a prototype HTS pancake coil using YBCO coated conductors by the technique of wind-and-flip pancake coil was made and will be tested later. This paper presents a design, fabrication, and thermal analysis of the prototype pancake coil. The coil will be cooled down around 20 K by conduction cooling using a GM cryocooler. The expected current drift rate for an MRI application has not been achieved, probably caused by large flux flow resistance of coated conductor at higher temperature, 77.3 K. A temperature dependency of temporal stability of the persistent current will be measured by monitoring the long-term drift of the magnetic field at different operating temperatures by Hall sensors.

KW - Conduction cooling

KW - Persistent current mode

KW - Superconducting joint

KW - Wind-and-flip

KW - YBCO coated conductor

UR - http://www.scopus.com/inward/record.url?scp=77952955443&partnerID=8YFLogxK

U2 - 10.1109/TASC.2010.2041769

DO - 10.1109/TASC.2010.2041769

M3 - Article

AN - SCOPUS:77952955443

SN - 1051-8223

VL - 20

SP - 1009

EP - 1012

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 3

M1 - 5433242

ER -

Thermal analysis of PCS for an HTS pancake coil in persistent current mode

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this