visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-06-14 15:00 
일시 June 14, 2016 (Tue) 3PM 
장소 #1323 (E6-2 1st fl.) 
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)

번호 날짜 장소 제목
공지 2022-10-24 16:00  E6 #1501(공동강의실)  Physics Colloquim(Fall 2022)
공지 2022-09-21 10:30  E6-1 #1501  [Update 세미나 영상] Distinguished Lecture 'The Magic of Moiré Quantum Matter' Prof. Pablo Jarillo-Herrero(Department of Physics, MIT)
공지 2022-11-11 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Honeycomb oxide heterostructures for quantum spin liquid
공지 2022-10-28 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Machine-Learning-Guided Prediction models and Materials discovery for high Tc cuprates
공지 2022-10-07 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Competing orders in a vanadium-based kagome metal monolayer
공지 2022-09-23 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Steady Floquet-Andreev states in graphene Josephson junctions
공지 2022-09-22 11:00  E6-1 #1323  2022 가을학기 응집물리 및 광학 세미나 전체 일정
217 2020-07-02 16:00  Zoom Video Conference Seminar  An irreversible qubit-photon coupling for the detection of itinerant microwave photons file
216 2018-07-13 14:00  Room 5318, KAIST Natural Sciences Lecture Hall(E6).  Loop Induced Single Top Partner Production and Decay at the LHC
215 2019-07-10 16:00  Academic Cltural Complex (E9) 5층 스카이라운지  Public Lectures file
214 2016-07-28 16:00  #1323(E6-2. 1st fl.)  Low Dimensional Electrons: On the Road to Hybrid Quantum Systems
213 2022-07-14 15:00  E6 #1501 & Zoom  Pure two-dimensional quantum electron liquid and its phase transition
212 2022-07-14 14:15  E6 #1501 & Zoom  Hund and electronic correlations in ruthenium-based systems
211 2022-07-14 13:30  E6 #1501 & Zoom  Electronic structure and anomalous transport properties of topological materials by first principle calculation
210 2016-07-08 14:00  #1323(E6-2. 1st fl.)  Electronic quasiparticles in the quantum dimer model
209 2016-07-08 11:00  #1323(E6-2. 1st fl.)  Isostatic magnetism
208 2016-07-07 14:00  #1323(E6-2. 1st fl.)  Let there be topological superconductors
207 2019-07-03 15:00  E6-2, 2501  Many-body quantum electrodynamis (QED) with atoms and photons: A new platform for quantum optics" file
206 2019-01-23 16:00  Rm. C303, Creation Hall (3F), Munji Campus  Ultrasensitive Microwave Bolometer: Opportunity for Axion Detectors file
205 2020-01-17 16:00  #1323, E6-2  Symmetry Breaking and Topology in Superfluid 3He file
204 2019-01-09 16:00  E6-2. 2nd fl. #2501  Molecular Mott state in the deficient spinel GaV4S8 file
203 2021-01-28 18:00  Online Seminar  Quantum metamaterials: concept, theory, prototypes and possible applications file
202 2021-01-28 15:00  Zoom  Topological Transport of Deconfined Hedgehogs in Magnets file
201 2019-01-07 15:00  E6-2. 2st fl. #2501  Many-Body Invariants for Multipoles in Higher-Order Topological Insulators file
200 2022-01-26 13:00  E6 #1501  An Introduction to Cohomology groups file
199 2022-01-25 15:00  E6 #1501/online  Emulating twisted double bilayer graphene with a multiorbital optical lattice file
198 2022-01-18 14:00  KI bldg. 5th fl. Room B501 & Zoom  Data-driven interrogation of biological dynamics: from subcellular interactions to neuronal networks in vivo file