JOINTS FOR SUPERCONDUCTING MAGNETS
|
|
- Brian Smith
- 6 years ago
- Views:
Transcription
1 JOINTS FOR SUPERCONDUCTING MAGNETS Patrick DECOOL Association EURATOM-CEA, CEA/DSM/IRFM 0
2 Large machines for fusion deals with Cable In Conduit Conductors (CICC) ITER Each conductor is composed of 1000 multistage twisted strands ITER Coils TF CS PF Superconductor Nb3Sn NbTi TF CS - PF Each of the 18 TF coils of ITER is made of 4 km of conductor. The maximum unit length is about 700 m ~ Manufacturing limit. These coils are wound in 7 double-pancakes of unequal lengths. These double-pancakes are electrically connected in series by joints located in a low magnetic field area. 1
3 Joint: electrical connection between two conductors Resistive conductors: The joint is an additive resistance in serie with the conductors. Voltage drops along the longitudinal conductor direction Superconductors: Voltage drops only at the joint location along the transverse direction The current has to be transferred from a superconductor to an other superconductor. Each superconductor is an equipotential The overlap has to be sufficiently long (L) to avoid excessive heating. 2
4 Some type of possible joints for CICC Overlap with or without intermediate conductor Overlap subdivided Butt joint 3
5 Overlap type joints for Nb 3 Sn Cable In Conduit Conductors Main problems to address (1/4) Lowering the DC resistance Use low resistivity material in interfacing components: High RRR copper Minimize the contact resistance: Removal of the resistive barriers as jacket, wraps and strand chrome coating Soldering of strands against copper material - Before Nb 3 Sn Heat treatment: no soldering possible Or high T welding without additional material (pollution) - After HT: risky operation Laboratory joints (Strand damage, oxidation ) Maximize contact surface between strands and copper pieces 4
6 Overlap type joints for Nb3Sn Cable In Conduit Conductors Main problems to address (2/4) Avoid degradation of the conductor performance coming from uneven current distribution among strands Ensure by design a perfect symmetry among the main subcables (petals) Avoid unconnected strands in petals to get the maximum conductor performance One cable twist pitch length required Maximal contact area for each petal Uneven current distribution on conductors can be the consequence of a bad joint Joints have to be as far as possible from the high B region to allow current transfer Example: Conductor performance degradation due to joints observed in the short ITER qualification samples in SULTAN 5
7 Overlap type joints for Nb3Sn Cable In Conduit Conductors Main problems to address (3/4) Reduce losses in variable field Location of joints in lowest field regions and with best orientation Inter-cable coupling currents Intra-cable coupling currents Intra or inter -cable coupling currents Multiple contacts of strands = addition of transport current and coupling currents Connection length one cable twist pitch 6
8 Overlap type joints for Nb3Sn Cable In Conduit Conductors Joint cooling Main problems to address (4/4) The joint is the location where the Joule power is dissipated Conduction cooling has to be carefully envisaged Forced flow cooling needs to keep free a void in the strand bundle or to add specific channels but at the expense of thermal gradients Location of joints at helium outlets (no impact of joint heating on conductor at peak field) Joint mechanical behavior The current and magnetic field operation induce high joints loading Choice of the joint location and orientation Mechanical clamping of the joint is needed taken into account that the forces origin is on the strands The electrical interface should not play any mechanical role (risk of joint degradation) 7
9 Application to ITER TF Joints requirement Low resistance with a high current: 1 à 2 60kA (Minimize the needed cryogenic power) Connection of a high number of strands (~1000) Low losses under variable field (operation in a tokamak environment) Manufacture before Nb3Sn reaction (no handling of reacted cables) Tightness check before coil assembly Possible dismantling (electric + hydraulic) (repairing of coil) Minimum size Easy to manufacture in industry (cost) 8
10 ITER TF joints: The twin box concept Developed at CEA Cadarache through R&D on single strands, subsize and full size conductor samples 9
11 ITER TF joints: Terminations manufacture (from TFMC) The jacket is removed on 0.5 m at the conductor ends In the zone where strands enter in contact with the copper sole, to ensure good electrical contact, the wrappings are removed and the strands are brushed to remove the chrome plating. The prepared length is equal to one twist pitch of the last cabling stage ( 0.42 m) The internal spiral is cut on the whole connected length and is replaced by a 2 mm thick tube to allow cable compaction down to a 25% void The box is manufactured starting from a bimetallic plate obtained by explosion. This plate is then bent and machined to obtain the box. The prepared cable is inserted inside the box and compacted down to 25% void. ( 200 tons needed on ITER TF cable) A cover and the termination end are welded to insure He tightness 10
12 ITER TF joints Heat treatment The coils double pancakes are sent to heat treatment with their extremities equipped with terminations. Such a process enable to avoid any manipulation of Nb3Sn after heat treatment. The heat treatment allows to improve the electrical contact resistance by sintering. Joint assembly The copper soles are machined to recover flatness After stacking of the winding double pancakes, the corresponding termination pairs are soft soldered to constitute the joints. The mechanical stiffness is insured by welded steel clamps 11
13 Adaptation of the twin box concept to ITER PF coils All the process has been described in the case of of Nb3Sn CICC. It was extended to NbTi CICC (ITER PF conductors) with some adaptation: No heat treatment Contact between strands and copper sole insured by silver coating of the regard surfaces Internal CuNi barrier strand Ni coated strand 12
14 The fabrication process was transferred to the European industry. In the framework of the TF model coil of ITER about a dozen of such connections were manufactured at Alstom and Ansaldo. The electrical resistance obtained is in the range of 1 nω. Industrialisation (1/2) 13
15 Industrialisation (2/2) Full size sample prototype of PF joint was manufactured with the adaptation of the concept to NbTi. The electrical resistance is in the same range as Nb3Sn (1.6 nω) The twin box concept is proposed for the JT60-SA TF joints. A qualification sample was manufactured and will be tested soon 14
16 Estimation of resistance for the TFMC joints Rjoint = 2ρ cu e cu /P c L + 2ρ b e b /P c L ρ cu copper resistivity (RRR=350) e cu thickness of copper sole (10 mm) P c geometrical contact of cable on copper sole (38 mm) L length of the joint (440 mm) ρ b e b overall barrier resistance per unit area between cable and copper sole The PbSn (2x 0.1mm) soldering is neglected Overall barrier resistance includes internal barrier and contact resistance 15
17 Estimation of resistance for the TFMC joints Rough measurement at 80 ka 2,0 error bar Resistance (nω) 1,5 1,0 0,5 0,0 DP1 DP2 DP3 DP4 DP5 DP1- DP2 DP2- DP3 DP3- DP4 DP4- DP5 16
18 Estimation of resistance for the TFMC joints Overall measured magneto-resistance effect 0.12 nω/t At 0 T, the contribution of copper sole is negligible, one can derive ρ b e b (from R&D and TFMC experiments): R o = R(0 T) = 1.2 nω => ρ b e b = Ωm 2 17
19 Joints for superconducting magnets Conclusion Cable In Conduit Conductors are extensively used in large superconducting magnets for fusion. The coil design as well as manufacture capabilities impose the use of electrical joints to connect the unit lengths of superconductors and to constitute the winding units (pancakes, double-pancakes, layers) The joints are resistive components which have to be carefully designed taking into account the operating parameters. The DC resistance, AC losses, cooling and mechanical problems have to be addressed in order to get satisfactory operation of these components as well as to avoid induced degradation of the conductor performance. 18
Large Superconducting Conductors and Joints for Fusion Magnets : from Conceptual Design to Test at Full Size Scale
Large Superconducting Conductors and Joints for Fusion Magnets : from Conceptual Design to Test at Full Size Scale D. Ciazynski, J.L. Duchateau, P. Decool, P. Libeyre, B. Turck Euratom-CEA Association,
More informationEvaluation of the Current Sharing Temperature of the ITER Toroidal Field Model Coil
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 13, NO. 2, JUNE 2003 1447 Evaluation of the Current Sharing Temperature of the ITER Toroidal Field Model Coil R. Heller, D. Ciazynski, J. L. Duchateau,
More informationCentral Solenoid Winding Pack Design
EUROFUSION WPMAG-CP(16) 15681 R Wesche et al. Central Solenoid Winding Pack Design Preprint of Paper to be submitted for publication in Proceedings of 29th Symposium on Fusion Technology (SOFT 2016) This
More informationIEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 14, NO. 2, JUNE A. Nijhuis, Yu. Ilyin, W. Abbas, B. ten Haken, and H. H. J.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 14, NO. 2, JUNE 2004 1489 Performance of an ITER CS1 Model Coil Conductor Under Transverse Cyclic Loading up to 40,000 Cycles A. Nijhuis, Yu. Ilyin,
More informationInnovative fabrication method of superconducting magnets using high T c superconductors with joints
Innovative fabrication method of superconducting magnets using high T c superconductors with joints (for huge and/or complicated coils) Nagato YANAGI LHD & FFHR Group National Institute for Fusion Science,
More informationSuperconducting Magnet Design and R&D with HTS Option for the Helical DEMO Reactor
Superconducting Magnet Design and R&D with HTS Option for the Helical DEMO Reactor N. Yanagi, A. Sagara and FFHR-Team S. Ito 1, H. Hashizume 1 National Institute for Fusion Science 1 Tohoku University
More informationHigh Temperature Superconductor. Cable Concepts for Fusion Magnets. Christian Barth. \iyit Scientific. ^VI I Publishing
High Temperature Superconductor Cable Concepts for Fusion Magnets by Christian Barth \iyit Scientific ^VI I Publishing Contents 1 Introduction and motivation 1 2 Superconductors 5 21 Superconductivity
More informationMaterial, Design, and Cost Modeling for High Performance Coils. L. Bromberg, P. Titus MIT Plasma Science and Fusion Center ARIES meeting
Material, Design, and Cost Modeling for High Performance Coils L. Bromberg, P. Titus MIT Plasma Science and Fusion Center ARIES meeting Tokamak Concept Improvement Cost minimization Decrease cost of final
More informationREFRIGERATION OF LOW-TEMPERATURE SUPERCONDUCTING COILS FOR NUCLEAR FUSION
REFRIGERATION OF LOW-TEMPERATURE SUPERCONDUCTING COILS FOR NUCLEAR FUSION R. ZANINO AND L. SAVOLDI RICHARD Dipartimento di Energetica, Politecnico 24 c. Duca degli Abruzzi, I-10129 Torino ITALY E-mail:
More informationQualification Tests and Facilities for the ITER Superconductors
1 IT/P7-13 Qualification Tests and Facilities for the ITER Superconductors P. Bruzzone, R. Wesche, B. Stepanov, F. Cau, M. Bagnasco, M. Calvi, R. Herzog, M. Vogel Ecole Polytechnique Fédérale de Lausanne
More informationDevelopment of cable in conduit conductor for ITER CS in Japan
Development of cable in conduit conductor for ITER CS in Japan H. Kajitani 1 T. Hemmi 1 T. Suwa 1 Y. Takahashi 1 K. Matsui 1 N. Koizumi 1 Springer Nature Switzerland AG 2019 Abstract The National Institutes
More informationHigh Temperature Superconductors for Fusion at the Swiss Plasma Center
EUROFUSION WPMAG-CP(16) 16576 P Bruzzone et al. High Temperature Superconductors for Fusion at the Swiss Plasma Center Preprint of Paper to be submitted for publication in Proceedings of 26th IAEA Fusion
More informationSelf Field Measurements by Hall Sensors on the SeCRETS Long Sample CICCs in SULTAN
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 12, NO. 1, MARCH 2002 1667 Self Field Measurements by Hall Sensors on the SeCRETS Long Sample CICCs in SULTAN Yu. A. Ilyin, A. Nijhuis, H. H. J. ten
More informationOptimisation of ITER Nb 3 Sn CICCs for coupling loss, transverse electromagnetic load and axial thermal contraction
12 Oct, 2011 Arend Nijhuis University of Twente Netherlands a.nijhuis@utwente.nl Optimisation of ITER Nb 3 Sn CICCs for coupling loss, transverse electromagnetic load and axial thermal contraction A. Nijhuis,
More informationUse of High Temperature Superconductors for Future Fusion Magnet Systems
Use of High Temperature Superconductors for Future Fusion Magnet Systems W.H. Fietz 1), G. Celentano 2), A. della Corte 2), W. Goldacker 1), R. Heller 1), P. Komarek 1), G. Kotzyba 1), R. Nast 1), B. Obst
More informationFeasibility of HTS DC Cables on Board a Ship
Feasibility of HTS DC Cables on Board a Ship K. Allweins, E. Marzahn Nexans Deutschland GmbH 10 th EPRI Superconductivity Conference Feasibility of HTS DC Cables on Board a Ship 1. Can superconducting
More informationSuperconductor Application to the Magnetic Fusion Devices for the Steady-State Plasma Confinement Achievement
17 Superconductor Application to the Magnetic Fusion Devices for the Steady-State Plasma Confinement Achievement Yeong-Kook Oh *, Keeman Kim, Kap-Rai Park and Young-Min Park National Fusion Research Institute
More informationEDIPO Test Facility User Specification
CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS ASSOCIATION EURATOM CONFEDERATION SUISSE CRPP-Technologie de la Fusion, CH 5232 Villigen PSI EDIPO Test Facility User Specification INT 213/15 EDIPO/SULTAN
More informationHTS Roebel and Rutherford Cables for High-Current Applications
HTS Roebel and Rutherford Cables for High-Current Applications S.I. Schlachter, W. Goldacker, F. Grilli, R. Heller, A. Kudymow, R. Nast, S.Terzieva KARLSRUHE INSTITUTE OF TECHNOLOGY, INSTITUTE FOR TECHNICAL
More informationCritical Current Properties of HTS Twisted Stacked-Tape Cable in Subcooled- and Pressurized-Liquid Nitrogen
IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS Critical Current Properties of HTS Twisted Stacked-Tape Cable in Subcooled- and Pressurized-Liquid Nitrogen To cite this article:
More information1798 IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 16, NO. 2, JUNE 2006
1798 IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 16, NO. 2, JUNE 2006 Analysis and Simulation of the ITER-Type NbTi Bus BarIII With the THELMA Code F. Bellina, Member, IEEE, P. L. Ribani, M. Bagnasco,
More informationThe Activities of ENEA on Superconductors Developments. presented by Antonio della Corte
The Activities of ENEA on Superconductors Developments presented by Antonio della Corte Outline Characterisation of strand, sub-cables, films and bulk samples Structural Characterisation (X-rays, Scanning
More informationWhich Superconducting Magnets for DEMO and Future Fusion Reactors?
Which Superconducting Magnets for DEMO and Future Fusion Reactors? Reinhard Heller Inspired by Jean Luc Duchateau (CEA) INSTITUTE FOR TECHNICAL PHYSICS, FUSION MAGNETS KIT University of the State of Baden-Wuerttemberg
More informationAnalysis of the Current Distribution in the ITER CS-Insert Model Coil Conductor by Self Field Measurements
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 12, NO. 1, MARCH 2002 1675 Analysis of the Current Distribution in the ITER CS-Insert Model Coil Conductor by Self Field Measurements A. Nijhuis, Yu.
More informationCURRENT LEADS FOR THE LHC MAGNET SYSTEM
EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH European Laboratory for Particle Physics Large Hadron Collider Project LHC Project Report 526 CURRENT LEADS FOR THE LHC MAGNET SYSTEM A. Ballarino Abstract The
More informationIEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 25, NO. 3, JUNE
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 25, NO. 3, JUNE 2015 6602705 Investigation of ReBCO Conductor Tape Joints for Superconducting Applications Nadezda Bagrets, Andrea Augieri, Giuseppe
More informationLecture #2 Design Guide to Superconducting Magnet
Lecture #2 Design Guide to Superconducting Magnet Yukikazu Iwasa Francis Bitter Magnet Laboratory Plasma Science and Fusion Center Massachusetts Institute of Technology Cambridge MA 02139 CEA Saclay June
More information13000 A HTS CURRENT LEADS FOR THE LHC ACCELERATOR: FROM CONCEPTUAL DESIGN TO PROTOTYPE VALIDATION
EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH European Laboratory for Particle Physics Large Hadron Collider Project LHC Project Report 696 13000 A HTS CURRENT LEADS FOR THE LHC ACCELERATOR: FROM CONCEPTUAL
More information15 - Development of HTS High Current Cables and Joints for DC Power and High Field Magnet Applications
15 - Development of HTS High Current Cables and Joints for DC Power and High Field Magnet Applications Joseph V. Minervini, Makoto Takayasu, Franco Mangioarotti, Leslie Bromberg, Phillip Michael, Michael
More informationMechanical and electro-magnetic performance of Nb 3. Sn superconductors for fusion
Mechanical and electro-magnetic performance of Nb 3 Sn superconductors for fusion Characterization and design optimization of Cable-In-Conduit Conductors for ITER magnets Arend Nijhuis i MECHANICAL AND
More informationResults of ITER Superconducting Magnet R&D
Results of ITER Superconducting Magnet R&D Peide WENG 1, Neil MITCHELL 1, Kiyoshi OKUNO 2 1 ITER Organization Cadarache, 13108 Saint Paul Lez Durance, France 2 ITER Superconducting Magnet Technology Group,
More information1074 IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 21, NO. 3, JUNE 2011
1074 IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 21, NO. 3, JUNE 2011 Test of a 10 ka HTS Current Lead for ITER Pierre Bauer, Yanfang Bi, Arnaud Devred, Kaizong Ding, Hansheng Feng, Chen-yu Gung,
More informationEU Contribution to the Test and Analysis of the ITER Poloidal Field Conductor Insert (PFCI)
1 IT/P7-14 EU Contribution to the Test and Analysis of the ITER Poloidal Field Conductor Insert (PFCI) R. Zanino 1), M. Bagnasco 2), D. Ciazynski 3), B. Lacroix 3), E.P.A. van Lanen 4), A. Nijhuis 4),
More informationBUSBAR AND JOINTS STABILITY AND PROTECTION
Proceedings of Chamonix 29 workshop on LHC Performance BUSBAR AND JOINTS STABILITY AND PROTECTION A.P. Verweij, CERN, Geneva, Switzerland Abstract A defective connection between two dipole magnets was
More informationAnalysis and interpretation of the full set ( ) of T CS tests in conductor 1A of the ITER Central Solenoid Model Coil
Cryogenics 43 (23) 179 197 www.elsevier.com/locate/cryogenics Analysis and interpretation of the full set (2 22) of T CS tests in conductor 1A of the ITER Central Solenoid Model Coil R. Zanino a, *, N.
More informationEuCARD-2 Enhanced European Coordination for Accelerator Research & Development. Journal Publication
CERN-ACC-2016-0039 EuCARD-2 Enhanced European Coordination for Accelerator Research & Development Journal Publication HTS Dipole Magnet for a Particle Accelerator using a Twisted Stacked Cable Himbele,
More informationElectromagnetic, stress and thermal analysis of the Superconducting Magnet
Electromagnetic, stress and thermal analysis of the Superconducting Magnet Yong Ren *, Xiang Gao *, 2 Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, PO
More informationThermal-hydraulic analysis of LTS cables for the DEMO TF coil using simplifi ed models*
NUKLEONIKA 2017;62(1):23 28 doi: 10.1515/nuka-2017-0004 ORIGINAL PAPER 2017 Monika Lewandowska et al. This is an open access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives
More informationDEVELOPMENT AND PRODUCTION OF SUPERCONDUCTING AND CRYOGENIC EQUIPMENT AND SYSTEMS FOR ACCELERATORS BY IHEP
I DEVELOPMENT AND PRODUCTION OF SUPERCONDUCTING AND CRYOGENIC EQUIPMENT AND SYSTEMS FOR ACCELERATORS BY IHEP K. Myznikov, A. Ageyev, V. Sytnik, I. Bogdanov, S. Kozub, E. Kashtanov, A. Orlov, V. Sytchev,
More informationThe development of a Roebel cable based 1 MVA HTS transformer
The development of a Roebel cable based 1 MVA HTS transformer Neil Glasson 11 October 2011 Mike Staines 1, Mohinder Pannu 2, N. J. Long 1, Rod Badcock 1, Nathan Allpress 1, Logan Ward 1 1 Industrial Research
More informationChallenges on demountable / segmented coil concept for high-temperature superconducting magnet
Challenges on demountable / segmented coil concept for high-temperature superconducting magnet N. Yanagi 1, S. Ito 2, H. Hashizume 2, A. Sagara 1 1 National Institute for Fusion Science 2 Tohoku University
More informationOptimization model of a structural simulation design for a CICC
Article Computational Engineering September 11 Vol.56 No.7: 978 983 doi: 1.17/s11434-11-448- SPECIAL TOPICS: Optimization model of a structural simulation design for a CICC JIANG HuaWei 1*, WU SongTao
More informationBatavia, Illinois, 60510, USA
HIGH TEMPERATURE SUPERCONDUCTORS FOR HIGH FIELD SUPERCONDUCTING MAGNETS E. Barzi 1, L. Del Frate 1, D. Turrioni 1, R. Johnson 2, and M. Kuchnir 2 1 Fermi National Accelerator Laboratory Batavia, Illinois,
More informationTo be published in the Proceedings of ICEC-22, Seoul Korea, July 2008 MICE Note 232 1
To be published in the Proceedings of ICEC-22, Seoul Korea, 21-25 July 2008 MICE Note 232 1 AC Loss Analysis on the Superconducting Coupling in MICE H. Wu, L. Wang, M. A. Green*, L. K. Li, F. Y. Xu, X.
More informationGesellschaft für Schwerionenforschung mbh (GSI), Planckstrasse 1, D Darmstadt, Germany
Proceedings of ICEC 22ICMC 2008, edited by HoMyung CHANG et al. c 2009 The Korea Institute of Applied Superconductivity and Cryogenics 9788995713822 Cold electrical connection for FAIR/ SIS100 Kauschke,
More informationCRYOGENIC CONDUCTION COOLING TEST OF REMOVABLE PANEL MOCK-UP FOR ITER CRYOSTAT THERMAL SHIELD
CRYOGENIC CONDUCTION COOLING TEST OF REMOVABLE PANEL MOCK-UP FOR ITER CRYOSTAT THERMAL SHIELD K. Nam, a D. K. Kang, a W. Chung, a C. H. Noh, a J. Yu, b N. I. Her, b C. Hamlyn-Harris, b Y. Utin, b and K.
More informationIon Beam Sources for Neutral Beam Injectors: studies and design for components active cooling and caesium ovens
Ion Beam Sources for Neutral Beam Injectors: studies and design for components active cooling and caesium ovens Andrea Rizzolo Consorzio RFX, Padova, Italy andrea.rizzolo@igi.cnr.it Advanced Physics Courses,
More informationSUPERCONDUCTING MAGNET FABRICATION AND QUALITY CONTROL
SUPERCONDUCTING MAGNET FABRICATION AND QUALITY CONTROL R. Penco Ansaldo Energia, Genova, Italy ABSTRACT A general review of the problems and production risk related to the industrial fabrication of prototypes
More informationStudies of Next-Step Spherical Tokamaks Using High-Temperature Superconductors Jonathan Menard (PPPL)
Studies of Next-Step Spherical Tokamaks Using High-Temperature Superconductors Jonathan Menard (PPPL) 22 nd Topical Meeting on the Technology of Fusion Energy (TOFE) Philadelphia, PA August 22-25, 2016
More informationTest Results of ITER Conductors in the SULTAN Facility
1 431 Test Results of ITER Conductors in the SULTAN Facility P. Bruzzone 1, B. Stepanov 1, R. Wesche 1, N. Mitchell 2, A. Devred 2, Y. Nunoya 3, V. Tronza 4, K. Kim 5, Th. Boutboul 6, N. Martovetsky 7,
More informationHT-7U* Superconducting Tokamak: Physics design, engineering progress and. schedule
1 FT/P2-03 HT-7U* Superconducting Tokamak: Physics design, engineering progress and schedule Y.X. Wan 1), P.D. Weng 1), J.G. Li 1), Q.Q. Yu 1), D.M. Gao 1), HT-7U Team 1) Institute of Plasma Physics, Chinese
More informationNew European Accelerator Project EuCARD: Work Package on High Field Magnets
New European Accelerator Project EuCARD: Work Package on High Field Magnets Gijs de Rijk CERN, Technology Department, 1211 Genève 23, Switzerland; Phone: +41-22767 5261; Fax: +41-22-767-6300; email: gijs.de.rijk@cern.ch
More informationProtecting a Full-Scale Nb3Sn Magnet with CLIQ, the New Coupling-Loss Induced Quench System
Protecting a Full-Scale Nb3Sn Magnet with CLIQ, the New Coupling-Loss Induced Quench System Emmanuele Ravaiolia,b H. Bajasa, V. I. Datskova, V. Desbiollesa, J. Feuvriera, G. Kirbya, M. Maciejewskia,c,
More informationPUBLICATION. Thermal Design of an Nb3Sn High Field Accelerator Magnet
EuCARD-CON-2011-057 European Coordination for Accelerator Research and Development PUBLICATION Thermal Design of an Nb3Sn High Field Accelerator Magnet Pietrowicz, S (CEA-irfu, on leave from Wroclaw University
More informationSuperconducting Undulator R&D at LBNL
Superconducting Undulator R&D at LBNL Søren Prestemon Dan Dietderich Steve Gourlay Phil Heimann Steve Marks GianLuca Sabbi Ron Scanlan Ross Schlueter Outline On-going research at LBNL Coil winding issues
More informationHigh Temperature Superconductors for Future Fusion Magnet Systems Status, Prospects and Challenges
1 IT/2-2 High Temperature Superconductors for Future Fusion Magnet Systems Status, Prospects and Challenges G. Janeschitz, R. Heller, W.H. Fietz, W. Goldacker, G. Kotzyba, R. Lietzow, R. Nast, B. Obst,
More informationStatus of the High Temperature Superconductor Current Lead Development at the Research Centre Karlsruhe
Status of the High Temperature Superconductor Current Lead Development at the Research Centre Karlsruhe R. Heller, W.H. Fietz, R. Lietzow Forschungszentrum Karlsruhe, Institut für Technische Physik e-mail:
More informationConceptual Design of CFETR Tokamak Machine
Japan-US Workshop on Fusion Power Plants and Related Advanced Technologies February 26-28, 2013 at Kyoto University in Uji, JAPAN Conceptual Design of CFETR Tokamak Machine Yuntao Song for CFETR Design
More informationCosting of magnets or How can the costs of ARIES be that much smaller that those of ITER
Costing of magnets or How can the costs of ARIES be that much smaller that those of ITER L Bromberg and J.H. Schultz ARIES CTF meeting UCSD March 3-4, 2008 Topics Costing options for magnets Resistive
More informationReview of design aspects for high current Nb3Sn conductors
The published version of this manuscript appeared in IEEE Transactions on Applied Superconductivity 21, Issue 3, 2036-2041 (2011) Review of design aspects for high current Nb3Sn conductors Pierluigi Bruzzone
More informationJT-60 SA Toroidal Field coil structural analysis
JT-60 SA Toroidal Field coil structural analysis Christophe Portafaix Introduction TF coil description TF coil design and electromagnetic loads Material and Criteria 2D structural analysis 3D structural
More informationTHE ACTIVITIES OF ENEA ON SC DEVELOPMENTS
THE ACTIVITIES OF ENEA ON SC DEVELOPMENTS G. Celentano (1), A. della Corte (1), A. Di Zenobio (2), V. Galluzzi (1), P. Gislon (1), A. Mancini (1), L. Muzzi (1), A. Rufoloni (1), S. Turtù (1), A. Vannozzi
More informationHTS Roebel cables. N.J. Long, Industrial Research Ltd and General Cable Superconductors Ltd. HTS4Fusion Workshop, 26 May 2011
HTS Roebel cables N.J. Long, Industrial Research Ltd and General Cable Superconductors Ltd HTS4Fusion Workshop, 26 May 2011 Contents Cable dimensions Wire qualification Manufacturing Punching Retained
More information2G HTS Coil Winding Technology Development at SuperPower
superior performance. powerful technology. 2G HTS Coil Winding Technology Development at SuperPower D.W. Hazelton, P. Brownsey, H. Song, Y. Zhang Tuesday, June 18, 2013 2013 CEC-ICMC Anchorage Alaska Paper
More informationPolyhelix ECR & high field magnet development at LNCMI: an emergent synergy F. Debray, CNRS, LNCMI-Grenoble
Polyhelix ECR & high field magnet development at LNCMI: an emergent synergy F. Debray, CNRS, LNCMI-Grenoble HIGH FIELD? In 2009, dc magnetic fields up to 35 T are available to the scientific community
More informationEUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH Laboratory for Particle Physics
EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH Laboratory for Particle Physics Departmental Report CERN/AT 2008-5 CABLE INSULATION SCHEME TO IMPROVE HEAT TRANSFER TO SUPERFLUID HELIUM IN Nb-Ti ACCELERATOR
More informationLatest Status of High Temperature Superconducting Cable Projects
Latest Status of High Temperature Superconducting Cable Projects Y.Ashibe, H.Yumura, M.Watanabe, H.Takigawa, H.Ito, M.Ohya, T.Masuda and M.Hirose Sumitomo Electric Industries, Ltd.Osaka,554-0024 Japan
More informationCRITICAL CURRENT AND JUNCTION BETWEEN PANCAKE STUDIES FOR HTS COIL DESIGN
Available online at www.sciencedirect.com Physics Procedia 36 (2012 ) 681 686 Superconductivity Centennial Conference CRITICAL CURRENT AND JUNCTION BETWEEN PANCAKE STUDIES FOR HTS COIL DESIGN T. Lécrevisse
More informationDevelopment of an Experiment to Study the Effects of Transverse Stress on the Critical Current of a Niobium-Tin Superconducting Cable.
PSFC/RR-06-4 Development of an Experiment to Study the Effects of Transverse Stress on the Critical Current of a Niobium-Tin Superconducting Cable Luisa Chiesa February, 2006 Plasma Science and Fusion
More informationMASSACHUSETTS INSTITUTE OF TECHNOLOGY DEPARTMENT OF MECHANICAL ENGINEERING DEPARTMENT OF NUCLEAR ENGINEERING 2.64J/22.68J , : & HTS
MASSACHUSETTS INSTITUTE OF TECHNOLOGY DEPARTMENT OF MECHANICAL ENGINEERING DEPARTMENT OF NUCLEAR ENGINEERING 2.64J/22.68J Spring Term 23 May 8, 23 Lecture 1: Protection & HTS Magnets Key magnet issues
More informationBi2212 High Temperature Superconductors Prepared by the Diffusion Process for Current Lead Application
Proc. Schl. Eng. Tokai Univ., Ser. E 33(28)35-4 Bi2212 High Temperature Superconductors Prepared by the Diffusion Process for Current Lead Application by Takuya Shimohiro *1, Takayuki Hori *1, Yutaka Yamada
More informationExperience in manufacturing a large HTS magnet for a SMES
Superconducting magnets April 05-09, 2009 CEA Cadarache, France Experience in manufacturing a large HTS magnet for a SMES P. Tixador Grenoble INP / Institut Néel - G2Elab Outline Introduction: SMES SMES:
More informationMgB 2 and BSCCO. S.I. SCHLACHTER, W. GOLDACKER KARLSRUHE INSTITUTE OF TECHNOLOGY, INSTITUTE FOR TECHNICAL PHYSICS
MgB 2 and BSCCO S.I. SCHLACHTER, W. GOLDACKER KARLSRUHE INSTITUTE OF TECHNOLOGY, INSTITUTE FOR TECHNICAL PHYSICS KIT University of the State of Baden-Wuerttemberg and National Research Center of the Helmholtz
More informationPhysics of fusion power. Lecture 14: Anomalous transport / ITER
Physics of fusion power Lecture 14: Anomalous transport / ITER Thursday.. Guest lecturer and international celebrity Dr. D. Gericke will give an overview of inertial confinement fusion.. Instabilities
More informationTesting of Single Phase Short Sample Cable Core Made with YBCO Conductors
Testing of Single Phase Short Sample Cable Core Made with YBCO Conductors C. S. Weber, V. Selvamanickam, Y.Y. Xie - SuperPower, Inc. T. Masuda, H. Yumura - Sumitomo Electric Industries Session # 4LW1 HTS
More informationCurrent Leads, Links and Buses
Current Leads, Links and Buses A. Ballarino 1 CERN, Geneva, Switzerland Abstract Electrical transfer from a room temperature power source to a superconducting system is done via conventional or superconducting
More informationAnalysis of Coupled Electromagnetic-Thermal Effects in Superconducting Accelerator Magnets
Analysis of Coupled Electromagnetic-Thermal Effects in Superconducting Accelerator Magnets Egbert Fischer 1, Roman Kurnyshov 2 and Petr Shcherbakov 3 1 Gesellschaft fuer Schwerionenforschung mbh, Darmstadt,
More informationRev-2 Submittal April 03, 2018
Developing HTS Magnets for Fusion Applications J. V. Minervini (MIT), Y. Zhai (PPPL), X. Wang (LBNL), and R. C. Duckworth (ORNL) 1 Description of HTS Magnet Technology All design concepts for power producing
More informationField Quality Measurements in a Single-Aperture 11 T Nb 3 Sn Demonstrator Dipole for LHC Upgrades
1LPN-03 FERMILAB-12-547-TD 1 Field Quality Measurements in a Single-Aperture 11 T Nb 3 Sn Demonstrator Dipole for LHC Upgrades N. Andreev, G. Apollinari, B. Auchmann, E. Barzi, R. Bossert, G. Chlachidze,
More informationAccelerators. Table Quadrupole magnet
Accelerators 2.6 Magnet System 2.6.1 Introduction According to the BEPCII double ring design scheme, a new storage ring will be added in the existing BEPC tunnel. The tasks of the magnet system can be
More informationJT-60SA configuration for which one of the most notable modification is a switch of magnet system from fully resistive to fully
The published version of this manuscript appeared in IEEE Transactions on Applied Superconductivity 21, Issue 3, 1938-1943 (2011) Design of JT-60SA Magnets and Associated Experimental Validations L. Zani,
More informationSuperconductivity at Future Hadron Colliders
XXVI Giornate di Studio sui Rivelatori 13-17.2.2017, Cogne, Italia Superconductivity at Future Hadron Colliders René Flükiger CERN, TE-MSC, 1211 Geneva 23, Switzerland and Dept. Quantum Matter Physics,
More informationSmall Spherical Tokamaks and their potential role in development of fusion power
Small Spherical Tokamaks and their potential role in development of fusion power Dr David Kingham, Nuclear Futures, 26 March 2013 Plasma in START tokamak, Courtesy Euratom/CCFE Fusion Association 1 Introduction
More informationReview of heat transfer mechanisms in superconducting magnets
Review of heat transfer mechanisms in superconducting magnets Bertrand Baudouy CEA Saclay DSM/Dapnia/SACM/LCSE HHH-AMT Workshop on Superconducting Pulsed Magnets for Accelerators ECOMAG-05 Frascati (Italy)
More informationLarge Superconducting Magnet Systems
Published by CERN in the Proceedings of the CAS-CERN Accelerator School: Superconductivity for Accelerators, Erice, Italy, 24 April 4 May 2013, edited by R. Bailey, CERN 2014 005 (CERN, Geneva, 2014) Large
More informationHigh-temperature superconducting magnet for use in Saturated core FCL
High-temperature superconducting magnet for use in Saturated core FCL Z Bar-Haim 1, A Friedman 1,, Y Wolfus, V Rozenshtein 1, F Kopansky, Z Ron 1, E Harel 1, N Pundak 1 and Y Yeshurun 1Ricor-Cryogenic
More informationInductively Coupled Pulsed Energy Extraction System for 2G Wire-Based Magnets
Inductively Coupled Pulsed Energy Extraction System for 2G Wire-Based Magnets Ronald Agustsson Josiah Hartzell, Scott Storms RadiaBeam Technologies, LLC Santa Monica, CA US DOE SBIR Phase I Contract #
More informationDemountable Superconducting Magnet Coils
FESAC TEC Report 1 Demountable Superconducting Magnet Coils A strategic technology to address key nuclear materials, construction, and maintenance issues Brandon Sorbom, Bob Mumgaard, Joseph Minervini,
More information1 Fig. 3.1 shows the variation of the magnetic flux linkage with time t for a small generator. magnetic. flux linkage / Wb-turns 1.
1 Fig. 3.1 shows the variation of the magnetic flux linkage with time t for a small generator. 2 magnetic 1 flux linkage / 0 10 2 Wb-turns 1 2 5 10 15 t / 10 3 s Fig. 3.1 The generator has a flat coil
More informationKeywords: Superconducting Fault Current Limiter (SFCL), Resistive Type SFCL, MATLAB/SIMULINK. Introductions A rapid growth in the power generation
IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY Performance of a 3.3kV Resistive type Superconducting Fault Current Limiter S.Vasudevamurthy 1, Ashwini.V 2 1 Department of Electrical
More informationHigh Magnetic Field Facility for Neutron Scattering
High Magnetic Field Facility for Neutron Scattering Project HFM-EXED NHMFL: M. Bird, I. Dixon, J. Toth, S. Bole, S. Hannahs, J. Kynoch, H. Bai, S. Marshall, T. Adkins, G. Boebinger J. Miller, A. Bonito-Oliva
More informationPresent Status and Recent Developments of the Twisted Stacked-Tape Cable Conductor
Present Status and Recent Developments of the Twisted Stacked-Tape Cable Conductor The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters.
More informationComparative measurements of ITER Nb3Sn strands between two laboratories
Comparative measurements of ITER Nb3Sn strands between two laboratories J. Lu, S. Hill, D. McGuire and K. Dellinger (National High Magnetic Field Laboratory, USA), A. Nijhuis, W.A.J. Wessel and H.J.G.
More informationDevelopment of Remountable Joints and Heat Removable Techniques for High-temperature Superconducting Magnets
1 FIP/3-4Rb Development of Remountable Joints and Heat Removable Techniques for High-temperature Superconducting Magnets H. Hashizume 1, S. Ito 1, N. Yanagi 2, H. Tamura 2, A. Sagara 2 1 Department of
More informationStability Analysis of the Interconnection of the LHC Main Superconducting Bus Bars
Stability Analysis of the Interconnection of the LHC Main Superconducting Bus Bars M. Bianchi 1,2, L. Bottura 2, M. Breschi 1, M. Casali 1, P.P. Granieri 2,3 1 University of Bologna, Italy 2 CERN, Geneva,
More informationAnalysis of capacitance of a cryogenic by-pass line for SIS100 particle accelerator at FAIR
ARCHIVES OF ELECTRICAL ENGINEERING VOL. 67(4), pp. 803 814 (2018) DOI 10.24425/aee.2018.124741 Analysis of capacitance of a cryogenic by-pass line for SIS100 particle accelerator at FAIR ŁUKASZ TOMKÓW
More informationCRITICAL CURRENT MEASUREMENTS ON Nb 3 Sn CONDUCTORS FOR THE NED PROJECT
CRITICAL CURRENT MEASUREMENTS ON Nb 3 Sn CONDUCTORS FOR THE NED PROJECT A. den Ouden, T. Boutboul, D. Pedrini, V. Previtali, L. Quettier and G. Volpini Abstract The Next European Dipole (NED) project is
More informationContinued Developments in High Magnetic Fields Enabled by Second-Generation High- Temperature Superconductors
superior performance. powerful technology. Continued Developments in High Magnetic Fields Enabled by Second-Generation High- Temperature Superconductors Drew W. Hazelton - Principal Engineer, HTS Applications
More information3 rd ILSF Advanced School on Synchrotron Radiation and Its Applications
3 rd ILSF Advanced School on Synchrotron Radiation and Its Applications September 14-16, 2013 Electromagnets in Synchrotron Design and Fabrication Prepared by: Farhad Saeidi, Jafar Dehghani Mechanic Group,Magnet
More informationAccelerator Quality HTS Dipole Magnet Demonstrator Designs for the EuCARD-2, 5 Tesla 40 mm Clear Aperture Magnet
CERN-ACC-2015-0024 glyn.kirby@cern.ch Accelerator Quality HTS Dipole Magnet Demonstrator Designs for the EuCARD-2, 5 Tesla 40 mm Clear Aperture Magnet G. A. Kirby, J. van Nugteren, A. Ballarino, L. Bottura,
More information