Multiphysics Simulations for the design of a Superconducting magnet for proton therapy
|
|
- Basil Cox
- 6 years ago
- Views:
Transcription
1 WIR SCHAFFEN WISSEN HEUTE FÜR MORGEN Paul Scherrer Institut Multiphysics Simulations for the design of a Superconducting magnet for proton therapy Ciro Calzolaio October 19, 2017
2 OUTLINE Superconducting magnets: a Multiphysics approach CAD drawing; Cool-down analysis; Operation AC losses calculation; Mechanical analysis. Further steps: Quench analysis
3 Superconducting magnets: a Multiphysics approach
4 CAD drawings
5 Support structure 316 LN former Support structure Fe yoke CuBe ring 316 L Cryostat Cu Thermal shield Cu Thermal shield around the Warm bore 1 st and 2 nd stage connections to cryocooler Warm bore Fully parametric CAD used during the optimization phase.
6 Cool-down
7 Cool-down Current lead top at room temperature 1 st stage 2 nd stage Cryostat walls at room temperature Cryocooler capacity map Capacity map implemented as two arguments interpolating function.
8 Support structure: materials choice G10 316LN Ti-6Al-4V Mechanic thermal
9 Thermal Analysis: cool-down The Ti-6Al-4V structure has been considered
10 Operation AC-losses
11 AC losses To change the protons penetration depth it is necessary to change their energy the bending field has to change accordingly. B-field in the magnet good field region (GFR) based on a worst case treatment scenario
12 316Ln coil structure: eddy currents AC losses in the structure Cable: 4.9 mm x 1.5 mm x 1100 m AC losses in the coils Strand: f = 0.82 mm Nb 3 Sn Filaments: f ~ 4-5 mm AC losses in the coils (inter-strands + inter-filaments + hysteresis) evaluated analytically
13 AC losses
14 AC losses It is important to prove that the coils temperature stays below T cs (current sharing temperature) to avoid Joule heating. In operation the De thermal is negligible
15 Operation mechanics
16 Support structure cryostat verification 1) s Mises < 110 MPa upon rotation < s yield
17 Support structure cryostat verification 1) s Mises < 110 MPa upon rotation < s yield 2) Warm bore load < critical load no buckling total displacement < clearances in CAD drawing no thermal bridges 0.4 mm 0.3 mm 0.2 mm 0.1 mm 3) Thermal shield total displacement < clearances in CAD drawing no thermal bridges
18 Stress on the conductor Nb 3 Sn is brittle + strain sensitive it is crucial to monitor the stress/strain the cable Lorentz forces + thermal strain were considered. von Mises A moderate performance degradation is expected Max shear on cable insulation
19 Further steps: Quench analysis
20 Current supply Quench scenario Despite the efforts during the design phase, a perturbation in the coils my trigger a transition from the superconducting to the normal state, namely a quench. In this case it is necessary to extract the magnet energy and to dump it into an external resistor. Extraction switch 1 R ex2 R ex1 Extraction switch 2
21 Quench scenario Despite the efforts during the design phase, a perturbation in the coils my trigger a transition from the superconducting to the normal state, namely a quench. In this case it is necessary to extract the magnet energy and to dump it into an external resistor. Joule heating Detection voltage Hot spot temperature Perturbation that triggers the quench time (ms)
22 Quench scenario Despite the efforts during the design phase, a perturbation in the coils my trigger a transition from the superconducting to the normal state, namely a quench. In this case it is necessary to extract the magnet energy and to dump it into an external resistor.
23 Summary Modelling a superconducting coil implies dealing with Multiphysics problems. COMSOL Multiphysics has been used to Produce a parametric CAD of the magnet; Analyze the cooldown time and the achievable temperature; Estimate the AC losses in the magnet in operation; Check the stress in the structure and in the coils due to the Lorentz forces and the thermal strain; In operation it is possible to have perturbations that leads to a quench of the superconducting magnet. In this case A fast heating of the coils takes place; If the energy is not safely extracted, the fast heating may even destroy the coils.
24 APPENDIX Page 70
25 Support structure: optimization parameters
26 Thermal Analysis Heat capacity Joule heating AC losses coils Cryocoolers Eddy currents Magnetization Fe Conduction
27 AC losses AC losses in the structure AC losses in the coils Temperature profile
28 AC losses - hysteresis
29 DQS structure: 1 st stage thermal shield Cu piece brazed to the Cu shield Cu thermal shield G10 hollow pillar
30 DQS structure Cu support around the coil. 316 L former Fe yoke
Lecture #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 informationLawrence Berkeley National Laboratory Lawrence Berkeley National Laboratory
Lawrence Berkeley National Laboratory Lawrence Berkeley National Laboratory Title The Mechanical and Thermal Design for the MICE Focusing Solenoid Magnet System Permalink https://escholarship.org/uc/item/7652n8md
More informationPreliminary design of the new HL-LHC beam screen for the low-β triplets
Preliminary design of the new HL-LHC beam screen for the low-β triplets Marco Morrone TE-VSC-DLM 15/10/2015 Contents o CERN The Hi Lumi upgrade o Functional requirements -Functional study -Current vs new
More informationDesign Aspects of High-Field Block-Coil Superconducting Dipole Magnets
Design Aspects of High-Field Block-Coil Superconducting Dipole Magnets E. I. Sfakianakis August 31, 2006 Abstract Even before the construction of the Large Hadron Collider at CERN is finished, ideas about
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 informationHIMARC Simulations Divergent Thinking, Convergent Engineering
HIMARC Simulations Divergent Thinking, Convergent Engineering 8117 W. Manchester Avenue, Suite 504 Los Angeles, CA 90293 Ph: (310) 657-7992 Horizontal Superconducting Magnet, ID 1.6m 1 1 Design definition
More information20 T Block Dipole: Features and Challenges
20 T Block Dipole: Features and Challenges GianLuca Sabbi, Xiaorong Wang, LBNL Acknowledgment: Daniel R. Dietderich, LBNL Emmanuele Ravaioli and Jonas Blomberg Ghini, CERN ICFA Mini Workshop on High Field
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 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 informationElectromagnetism Review Sheet
Electromagnetism Review Sheet Electricity Atomic basics: Particle name Charge location protons electrons neutrons + in the nucleus - outside of the nucleus neutral in the nucleus What would happen if two
More informationWir schaffen Wissen heute für morgen
Wir schaffen Wissen heute für morgen Paul Scherrer Institut René Künzi Thermal Design of Power Electronic Circuits CERN Accelerator School 2014, Baden, Switzerland 12.5.2014 Motivation Statement in a meeting:
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 informationAssisted by Advanced Finite-Element Simulations
Presented at the COMSOL Conference 2009 Milan COMSOL 2009, Milan, October 2009 Magnetic Fields in Hochfeld- Magnetlabor Dresden Science and Medicine Assisted by Advanced Finite-Element Simulations Hochfeld-Magnetlabor
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 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 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 informationImpact of the forces due to CLIQ discharges on the MQXF Beam Screen. Marco Morrone, Cedric Garion TE-VSC-DLM
Impact of the forces due to CLIQ discharges on the MQXF Beam Screen Marco Morrone, Cedric Garion TE-VSC-DLM The High Luminosity - LHC project HL-LHC Beam screen design - Beam screen dimensions - Conceptual
More informationLecture 2: Training, fine filaments & cables
resistance Lecture : Training, fine filaments & cables Degraded performance & Training load lines and expected quench current of a magnet causes of training - release of energy within the magnet minimum
More informationA 5 Tesla Solenoid for SiD
2005 International Linear Collider Workshop Stanford, U.S.A A 5 Tesla Solenoid for SiD R. P. Smith, R. Wands FNAL, Batavia, IL 60510, USA A conceptual design study for a 5 Tesla superconducting solenoid
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 informationGrounding and Shielding
Grounding and Shielding Veljko Radeka, BNL Outline Primary guidelines The Liquid Argon Calorimeter system Prevention of EMI and isolation Safety grounds Interface with other subsystems Status of implementation
More informationHB Magnet Quench Calculation. R. Rajput-Ghoshal P. Ghoshal R. Fair
HB Magnet Quench Calculation R. Rajput-Ghoshal P. Ghoshal R. Fair 1.14.215 Content: 1. Magnet Details Coil Construction Operating parameters DC circuit 2. MIITs calculations Assumptions Temp vs MIITS Temp
More information1st Performance Test of the 25 T Cryogen-free Superconducting Magnet
1 1st Performance Test of the 25 T Cryogen-free Superconducting Magnet Satoshi Awaji, Kazuo Watanabe, Hidetoshi Oguro, Hiroshi Miyazaki, Satoshi Hanai, Taizo Tosaka, Shigeru Ioka Abstract A 25 T cryogen-free
More informationWhat is a short circuit?
What is a short circuit? A short circuit is an electrical circuit that allows a current to travel along an unintended path, often where essentially no (or a very low) electrical impedance is encountered.
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 informationLoad Cell Design Using COMSOL Multiphysics
Load Cell Design Using COMSOL Multiphysics Andrei Marchidan, Tarah N. Sullivan and Joseph L. Palladino Department of Engineering, Trinity College, Hartford, CT 06106, USA joseph.palladino@trincoll.edu
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 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 informationSuperconducting Magnet with a Minimal Steel Yoke for the Future Circular Collider Detector
Superconducting Magnet with a Minimal Steel Yoke for the Future Circular Collider Detector V. I. Klyukhin Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, 119992, Russia
More informationTRANSFORMERS. Pascal Tixador. Grenoble INP - Institut Néel / G2Elab. Introduction
TRANSFORMERS Pascal Tixador Grenoble INP - Institut Néel / GElab Introduction! Discovered in 188 «!secondary generator!»! The transformers: an essential link in the a.c. electric systems Adjust with very
More informationMassachusetts Institute of Technology 22.68J/2.64J Superconducting Magnets. February 27, Lecture #4 Magnetic Forces and Stresses
Massachusetts Institute of Technology.68J/.64J Superconducting Magnets February 7, 003 Lecture #4 Magnetic Forces and Stresses 1 Forces For a solenoid, energy stored in the magnetic field acts equivalent
More informationThe Design and Fabrication of a 6 Tesla EBIT Solenoid
LBNL-40462 SCMAG-593 The Design and Fabrication of a 6 Tesla EBIT Solenoid 1. Introduction M. A. Green a, S. M. Dardin a, R. E. Marrs b, E. Magee b, S. K. Mukhergee a a Lawrence Berkeley National Laboratory,
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 information100 TeV Collider Magnets
100 TeV Collider Magnets Alexander Zlobin Fermilab 1st CFHEP Symposium on circular collider physics 23-25 February 2014 IHEP, Beijing (China) Introduction v Circular collider energy scales with the strength
More informationAvailable online at ScienceDirect. Physics Procedia 67 (2015 ) Performance test of a G-M cooler in magnetic field
Available online at www.sciencedirect.com ScienceDirect Physics Procedia 67 (2015 ) 440 444 25th International Cryogenic Engineering Conference and the International Cryogenic Materials Conference in 2014,
More informationCable Stability. 1 Introduction. L. Bottura 1 CERN, Geneva, Switzerland
Cable Stability L. Bottura 1 CERN, Geneva, Switzerland Abstract Superconductor stability is at the core of the design of any successful cable and magnet application. This chapter reviews the initial understanding
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 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 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 informationCoupled electromagnetic, thermal and stress analysis of large power electrical transformers
Coupled electromagnetic, thermal and stress analysis of large power electrical transformers DANIELA CÂRSTEA High-School Group of Railways, Craiova ROMANIA ALEXANDRU ADRIAN CÂRSTEA University of Craiova
More informationFEA Mechanical Modeling of Torque Transfer Components for Fully Superconducting Rotating Machines
FEA Mechanical Modeling of Torque Transfer Components for Fully Superconducting Rotating Machines Tingcheng.Wu 1, Guillaume.Escamez 1, Clement.Lorin 1, Philippe J. Masson 1 1 University of Houston *Mechanical
More informationSpent fuel inventory calculations in the SPIRE project: Current limits and expected improvements
WIR SCHAFFEN WISSEN HEUTE FÜR MORGEN D. Rochman and M. Seidl, for the SPIRE project Spent fuel inventory calculations in the SPIRE project: Current limits and expected improvements Implementing Geological
More informationDesign and Modelling of LTS Superconducting Magnets. Magnetic design
ASC 212 Short Course Design and Modelling of LTS Superconducting Magnets Magnetic design Paolo Ferracin (paolo.ferracin@cern.ch) European Organization for Nuclear Research (CERN) Introduction The magnetic
More informationLinear Magnetostrictive Models in Comsol
Presented at the COMSOL Conference 2009 Boston ETREMA Products, Inc. Linear Magnetostrictive Models in Comsol Comsol Conference 2009 October 8-10, 2009 Boston, MA 10/23/2009 Sponsored in part by ONR Contract
More informationAdiabatic Demagnetization Refrigeration
Adiabatic Demagnetization Refrigeration External magnetic field ( B ) aligns... Thermal disorder ( T ) mixes up... => degree of order ( M ) depends on the ratio B/T Measure M in known B and get T OR Fix
More informationChapter 1 Introduction
Chapter 1 Introduction 1.1 Field properties of superconducting magnets The vanishing electrical resistance of superconducting coils as well as their ability to provide magnetic fields far beyond those
More informationJOINTS FOR SUPERCONDUCTING MAGNETS
JOINTS FOR SUPERCONDUCTING MAGNETS Patrick DECOOL Association EURATOM-CEA, CEA/DSM/IRFM 0 Large machines for fusion deals with Cable In Conduit Conductors (CICC) ITER Each conductor is composed of 1000
More informationCommissioning testing of a 1 MVA Superconducting transformer featuring 2G HTS Roebel cable
Commissioning testing of a 1 MVA Superconducting transformer featuring 2G HTS Roebel cable Glasson N, Staines M, Allpress N, Badcock R 10:45 2M-LS-O2 OUTLINE Introduction Electrical Design Specifications
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 informationValidation of COMSOL -Based Performance Predictions of Bi-2212 Round Wire Prototype Coils
Validation of COMSOL -Based Performance Predictions of Bi-2212 Round Wire Prototype Coils Ernesto S. Bosque U.P. Trociewitz Y.Kim, D.K. Hilton, C.L. English, D.S. Davis, G. Miller, D. Larbalestier Bi-2212
More informationOperation of an Electromagnetic Trigger with a Short-circuit Ring
Operation of an Electromagnetic Trigger with a Short-circuit Ring Dejan Križaj 1*, Zumret Topčagić 1, and Borut Drnovšek 1,2 1 Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia,
More informationA Novel Configuration for Superconducting Space Radiation Shield. The Pumpkin Configuration
A Novel Configuration for Superconducting Space Radiation Shield The Pumpkin Configuration Valerio Calvelli Mar 11 th, 2016 Overview SR2S Project The Problem of the Radiation Shielding in the Deep Space
More informationEnergy Levels Zero energy. From Last Time Molecules. Today. n- and p-type semiconductors. Energy Levels in a Metal. Junctions
Today From Last Time Molecules Symmetric and anti-symmetric wave functions Lightly higher and lower energy levels More atoms more energy levels Conductors, insulators and semiconductors Conductors and
More informationElectromagnetic characterization of big aperture magnet used in particle beam cancer therapy
Electromagnetic characterization of big aperture magnet used in particle beam cancer therapy Jhonnatan Osorio Moreno M.Pullia, C.Priano Presented at Comsol conference 2012 Milan Milan 10 th October 2012
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 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 informationQuench protection and design of high-field superconducting accelerator magnets: the role of dynamic effects on the differential inductance
Facoltà di Scienze Matematiche Fisiche e Naturali Scuola di Dottorato in Fisica, Astrofisica e Fisica Applicata Quench protection and design of high-field superconducting accelerator magnets: the role
More informationUncertainties in the measurement of the mechanical properties of Nb 3 Sn coil constituents and cable stacks
Uncertainties in the measurement of the mechanical properties of Nb 3 Sn coil constituents and cable stacks C. Scheuerlein, F. Lackner Nb 3 Sn Rutherford cable characterization for accelerator magnets
More informationof a Large Aperture High Field HTS SMES Coil
Design, Construction and Testing of a Large Aperture High Field HTS SMES Coil R. Gupta, M. Anerella, P. Joshi, J. Higgins, S. Lakshmi, W. Sampson, J. Schmalzle, P. Wanderer High Field HTS SMES Coil R.
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 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 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 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 informationSection 1 Electric Charge and Force
CHAPTER OUTLINE Section 1 Electric Charge and Force Key Idea questions > What are the different kinds of electric charge? > How do materials become charged when rubbed together? > What force is responsible
More informationCivil Engineering Design (1) Design of Reinforced Concrete Columns 2006/7
Civil Engineering Design (1) Design of Reinforced Concrete Columns 2006/7 Dr. Colin Caprani, Chartered Engineer 1 Contents 1. Introduction... 3 1.1 Background... 3 1.2 Failure Modes... 5 1.3 Design Aspects...
More informationWhich of the following is the SI unit of gravitational field strength?
T5-2 [122 marks] 1. A cell is connected in series with a 2.0Ω resistor and a switch. The voltmeter is connected across the cell and reads 12V when the switch is open and 8.0V when the switch is closed.
More informationThermal Stability of Yttrium Based Superconducting Coil for Accelerator Application
Thermal Stability of Yttrium Based Superconducting Coil for Accelerator Application Xudong Wang, 1 Kiyosumi Tsuchiya, 1 Shinji Fujita, Shogo Muto, Masanori Daibo, 3 Yasuhiro Iijima and Kunihiro Naoe Yttrium(Y)-based
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 informationPreliminary AD-Horn Thermomechanical and Electrodynamic Simulations
CERN-ACC-2016-0334 2016-12-12 edmundo.lopez.sola@cern.ch Preliminary AD-Horn Thermomechanical and Electrodynamic Simulations Edmundo Lopez Sola / EN-STI, David Horvath / EN-STI, Marco Calviani / EN-STI
More informationModeling of Magnetic Flux Leakage. Carbon Steel Plates
Presented at the COMSOL Conference 2010 India Three-Dimensional Finite Element Modeling of Magnetic Flux Leakage Technique e for Detection of Defects in Carbon Steel Plates W. Sharatchandra Singh, S. Thirunavukkarasu,
More informationR&D Progress of the High Field Magnet Technology for CEPC-SPPC
R&D Progress of the High Field Magnet Technology for CEPC-SPPC Qingjin XU On behalf of the SPPC magnet working group Institute of High Energy Physics (IHEP) Chinese Academy of Sciences (CAS) HKUST,Jan.
More informationElectric Currents and Simple Circuits
-1 Electric Currents and Simple Circuits Electrons can flow along inside a metal wire if there is an E-field present to push them along ( F= qe). The flow of electrons in a wire is similar to the flow
More informationInduction_P1. 1. [1 mark]
Induction_P1 1. [1 mark] Two identical circular coils are placed one below the other so that their planes are both horizontal. The top coil is connected to a cell and a switch. The switch is closed and
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 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 informationDesign Principles of Superconducting Magnets
1 Design Principles of Superconducting Magnets Aki Korpela Tampere University of Technology DESIGN PRINCIPLES OF SUPERCONDUCTING MAGNETS 2 Content of the presentation Background Short-sample measurement
More informationFatigue Algorithm Input
Methods Fatigue Algorithm Input By default, fe-safe analyses stress datasets that contain elastic stresses The calculation of elastic-plastic stress-strains, where necessary, is performed in fe-safe using
More informationElectromechanics in LS-DYNA R7
Electromechanics in LS-DYNA R7 Information Day, Gbg, 2013-06-26 marcus.lilja@dynamore.se General 2013-10-04 2 Electromechanics in LS-DYNA R7 Available in R7.0.0 Eddy Current Solver Inductive Heating Solver
More informationHelium two-phase flow in a thermosiphon open loop
Presented at the COMSOL Conference 2009 Milan COMSOL Conference 2009 Milan October 14-16 2009 Helium two-phase flow in a thermosiphon open loop Florian Visentin, Bertrand Baudouy CEA Saclay Accelerator,
More informationSimultaneous measurement of critical current, stress, strain and lattice distortions in high temperature superconductors
Simultaneous measurement of critical current, stress, strain and lattice distortions in high temperature superconductors C. Scheuerlein 1, R. Bjoerstad 1, A. Grether 1, M. Rikel 2, J. Hudspeth 3, M. Sugano
More informationSuperconductor. Superconductor Materials Materials Eng. Dep. Kufa Univ. Dr. Sabah M. Thahab
Superconductor Materials What's a superconductor? Superconductors have two outstanding features: 1). Zero electrical resistivity. This means that an electrical current in a superconducting ring continues
More informationLIMITS OF Nb 3 Sn ACCELERATOR MAGNETS*
Proceedings of 5 Particle Accelerator Conference, Knoxville, Tenneee LIMITS OF Nb 3 Sn ACCELERATOR MAGNETS* S. Caspi # and P. Ferracin, LBNL, Berkeley, CA 947, USA Abstract Pushing accelerator magnets
More informationRecent Developments in YBCO for High Field Magnet Applications
superior performance. powerful technology. Recent Developments in YBCO for High Field Magnet Applications D.W. Hazelton Principal Engineer, SuperPower, Inc. 2008 Low Temperature Superconductor Workshop
More informationKeywords: Electric Machines, Rotating Machinery, Stator faults, Fault tolerant control, Field Weakening, Anisotropy, Dual rotor, 3D modeling
Analysis of Electromagnetic Behavior of Permanent Magnetized Electrical Machines in Fault Modes M. U. Hassan 1, R. Nilssen 1, A. Røkke 2 1. Department of Electrical Power Engineering, Norwegian University
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 informationModelling of bird strike on the engine fan blades using FE-SPH
Modelling of bird strike on the engine fan blades using FE-SPH Dr Nenad Djordjevic* Prof Rade Vignjevic Dr Tom De Vuyst Dr James Campbell Dr Kevin Hughes *nenad.djordjevic@brunel.ac.uk MAFELAP 2016, 17
More informationPoS(NuFact2017)088. EMuS in CSNS. Guang Zhao 1. Institute of High Energy Physics Beijing, China
1 Institute of High Energy Physics Beijing, China E-mail: zhaog@ihep.ac.cn In this presentation, we report the recent progress in EMuS at CSNS. The following topics will be discussed: a) the base design
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 informationThe LHC Collider. STOA lecture, Brussels, 27 th November 2012 Steve Myers Director of Accelerators and Technology, CERN
The LHC Collider STOA lecture, Brussels, 27 th November 2012 Steve Myers Director of Accelerators and Technology, CERN Outline of Talk The LHC Stored energy and protection systems 2008 start-up 2008 accident
More information7.6 Stress in symmetrical elastic beam transmitting both shear force and bending moment
7.6 Stress in symmetrical elastic beam transmitting both shear force and bending moment à It is more difficult to obtain an exact solution to this problem since the presence of the shear force means that
More information14 - CURRENT ELECTRICITY Page 1 ( Answers at the end of all questions )
14 - CURRENT ELECTRICITY Page 1 1 ) In the circuit, the galvanometer G shows zero deflection. If the batteries A and B have negligible internal resistance, the value of the resistor R will be ( a ) 100
More informationApplication of SuperPower 2G HTS Wire to High Field Devices
superior performance. powerful technology. Application of SuperPower 2G HTS Wire to High Field Devices Drew W. Hazelton Principal Engineer, SuperPower, Inc. 2011 MT22 Conference Marseille, France Sept.
More informationThermomagnetic Siphoning on a Bundle of Current-Carrying Wires
Excerpt from the Proceedings of the COMSOL Conference 2010 Boston Thermomagnetic Siphoning on a Bundle of Current-Carrying Wires Jeffrey C. Boulware *, 1 and Scott Jensen 1 1 Space Dynamics Laboratory,
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 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 informationAmpacity simulation of a high voltage cable to connecting off shore wind farms
Ampacity simulation of a high voltage cable to connecting off shore wind farms Pelster 1, Wenger 1 1 Wenger Engineering GmbH, Einsteinstr. 55, 89077 Ulm, mail@wenger-engineering.com Abstract: The ampacity
More informationResistance Learning Outcomes
Resistance Learning Outcomes Define resistance and give its unit. Solve problems about resistance. State Ohm s Law. HL: Derive the formulas for resistors in series and parallel. Solve problems about resistors
More informationDesign of Current Leads for the MICE Coupling Magnet
MCE Note 219 Design of Current Leads for the MCE Coupling Magnet Wang L.*, Li L. K.*, Wu H.*, Pan H.*, Xu F.Y.*, Liu X.K.*, Jia L. X.*, and Green M. A.** * nstitute of Cryogenics and Superconductivity
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 information(b) The diagram given below has T2>T1. Explain. Ans.: We know that V IR, T indicates the temperature I 1. (Lower temperature) (Higher Temperature)
BHSEC: 2009 (a) How can a galvanometer be converted into an ammeter of desired range? Explain with the help of diagram. By connecting a low resistance (shunt) in parallel to the galvanometer. As per ohm
More information