No-Insulation High Temperature Superconductor Magnet Technology for Compact, Reliable, and Low-Cost High Field DC Magnets
2016.06.13 17:16
장소 | #1323 (E6-2 1st fl.) |
---|---|
일시 | June 14, 2016 (Tue) 3PM |
연사 | Prof. Seungyong Hahn, Florida State University |
No-Insulation High Temperature Superconductor Magnet Technology for Compact, Reliable, and Low-Cost High Field DC Magnets
June 14, 2016 (Tue) 3PM , #1323 (E6-2 1st fl.)
Prof. Seungyong Hahn, Florida State University
Abstract:
Firstly introduced in 2010, the No-Insulation (NI) high temperature superconductor (HTS) winding technique is expected to provide a practical solution for protection of HTS magnets, one of the most critical challenges in high-field (>20-T) HTS magnets. The key idea is to eliminate turn-to-turn insulation within an HTS coil and, in a quench event, current can be automatically diverted to the adjacent turns through turn-to-turn shorts. As a result, an NI magnet can be designed at a substantially higher operating current density than that of its insulated counterpart, thus the magnet becomes extremely compact, yet “self-protecting.” To date, over 100 NI HTS coils have been constructed and tested to have successfully demonstrated the self-protecting feature of NI coils. In a magnet level, a total of 9 NI magnets have been designed, constructed, and tested, including the recent 26-T 35-mm all-REBCO magnet that was designed by Hahn and constructed by SuNAM. To date, all of NI magnets survived after multiple consecutive quenches at their nominal operating temperature ranged 4.2 – 20 K. An NI magnet, however, has a major drawback of “charging delay” due to its turn-to-turn shorts. Several variations of the NI technique, including the Partial-No-Insulation (PNI) and the Metallic-Cladding-Insulation (MCI), are proposed by several groups, with which 5 – 50 times reduced charging delays were reported than those of their NI counterparts. This presentation provides a summary of the NI magnet technologies, relevant to design and construction of axion detection magnets, for the past 5 years, which include: 1) recent quench test results of two all-REBCO magnets, 26-T/35-mm and 7-T/78-mm; 2) a 9 T REBCO insert that reached a record high field of 40 T in a background field of 31 T; 3) “electromagnetic quench propagation” as the self-protecting mechanism of an NI magnet; 4) potential of the NI technique for the next-generation ultra high field magnets; 5) major challenges and potential pitfalls.
Contact: CAPP Administration Office(T.8166)
댓글 0
번호 | 일시 | 장소 | 연사 | 제목 |
---|---|---|---|---|
328 | Apr. 2 (Fri.), 04:00 PM | Online(Zoom) | Dr. Heejun Yang (KAIST) | Van der Waals heterostructures for orbital gating-based phototransistors and electronic spectroscopy |
327 | 2015/10/23, 3PM | E6-2, #5318 | Dr. Helmut Soltner (Forschungszentrum Juelich) | Development of a Rogowski Coil as a new beam position monitor |
326 | Jun 24 (Mon) 11:00 | E6-2, #1323 | Dr. Henning Schomerus |
Topological photonic anomalies
![]() |
325 | 4pm, Sep. 21 (Wed. | E6-2. #2502(2nd fl.) | Dr. Henrik Johannesson , University of Gothenburg (Sweden) and Beijing Computational Science Research Center (China) | Entanglement probe of two-impurity Kondo physics |
324 | Jan.9 (Wed.), 04:00 PM | E6-2. 2nd fl. #2501 | Dr. Heung-Sik Kim |
Molecular Mott state in the deficient spinel GaV4S8
![]() |
323 | Nov. 16 (Wed), 4p.m. | #1323(E6-2. 1st fl.) | Dr. Heung-Sik Kim , University of Toronto | Realizing Haldane Model in Fe-based Honeycomb Ferromagnetic Insulators |
322 | May 13 (Fri.) 4 PM | E6. #1501(1st fl.) | Dr. Hosub Jin, Dept. of Physics, UNIST | Graphene analogue in (111)- BaBiO3 bilayer heterostructures for topological electronics |
321 | Dec. 3 (Fri.), 04:00 PM | Zoom webinar | Dr. Hyejin Jang (Seoul National University) |
Nonequilibrium Heat Transport in Elemental Metals Probed by an Ultrathin Magnetic Thermometer
![]() |
320 | July 27, 2018 at 15:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). | Dr. Hyejung Kim(Technische University Dresden) |
Muon g-2 in the 2HDM and MSSM: comprehensive numerical analysis and absolute maxima
![]() |
319 | Jan. 26th (Tue), 13:00 | E6 #1501 | Dr. Hyojin Jung (NIMS) |
An Introduction to Cohomology groups
![]() |
318 | Oct. 12 (Fri.), 04:00 PM | E6-2. 1st fl. #1323 | Dr. HyungWoo Lee |
Direct observation of a two-dimensional hole gas at oxide interfaces
![]() |
317 | Dec. 26 (Wed.), 04:00 PM | E6-2. 1st fl. #1323 | Dr. Isaac H. Kim |
Brane-like defect in 3D toric code
![]() |
316 | July 31(Wed.)/ 16:00 | E6-2, #1323 | Dr. Ivan Borzenets |
Features of ballistic superconducting graphene
![]() |
315 | Thursday, July 12, 2018 at 17:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6) | Dr. Jae Hyeok Yoo (University of California, Santa Barbara, Department of Physics) | The MilliQan Experiment: Search for Milli-Charged Particles at the LHC |
314 | Dec. 9(Fri), 1:30 p.m. | #1323(E6-2. 1st fl.) | Dr. Jae Yoon Cho, POSTECH | Entanglement area law in strongly-correlated systems |
313 | October 16 (Wed), 4:00pm | #1323 (E6-2, 1st fl.) | Dr. Jaewon Song |
Emergent black holes and monopoles from quantum fields
![]() |
312 | Nov. 24(Thu) 4p.m. | #1323(E6-2. 1st fl.) | Dr. Jai-Min Choi, Chonbuk National Univiersity | Harmonic oscillator physics with single atoms in a state-selective optical potential |
311 | 2015/09/07, 3PM | E6-2. 1st fl. #1318 | Dr. Jasbinder Sanghera (U.S. Naval Research Laboratory (NRL)) | Advanced Optical Materials and Devices at NRL |
310 | May. 14 (Fri.), 04:00 PM | Online seminar | Dr. Je-Hyung Kim(UNIST) |
Spatial and temporal separation of environmental dephasing sources from solid-state quantum emitters
![]() |
309 | Apr. 12 (Tue.), 4 PM | E6-2. 1st fl. #1323 | Dr. Jeehoon Kim, POSTECH | Confinement of Superconducting Vortices in Magnetic Force Microscopy |