1 Dipole design review: outlines of talks - PowerPoint Presentation

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Dipole design review: outlines of talks

Gijs de Rijk, Francois Kircher and Jean-Michel Rifflet

Dipole design reviewDate: 20-21 January 2011Place: CEAReviewers:Giorgio Ambrosio (FNAL)Lucio Rossi (CERN)Shlomo Caspi (LBNL)

Akira Yamamoto & Tatsu Nakamoto

(KEK)Yuki Iwasa (MIT)Pasquale Fabbricatore (INFN Genova)

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Draft agenda (day 1)Introduction 9h00 I-1) EuCARD-HFM and its context.  (GdR)   15’+5’II) Technical part 9h20 II-1) Overview of the dipole  (J-M Rifflet)   15’+10’ 9h45 II-2) Conductor choice, properties and procurement strategy (L. Oberli) 20’+10’10h15 Coffee break 15’10h30 II-3) Conceptual design (A. Milanese)  30’+10’11h10 II-4) Engineering design (P. Manil)  30’+10’11h50 II-5) Quench protection (P.

Fazilleau)  15’+10’12h15 Lunch break 1h45’14h00 II-6) SMC as preparatory project (J-C. Perez) 20’+10'

14h30 II-7) Fabrication process study (M. Durante)  30’+10’15h10 II-8) Winding and tooling tests and insulation choice (F. Rondeaux)  20’+10’ Coffee break 15’15h55 II-9) Cooling, heat transfer and cool-down issues (S. Pietrowicz )  20’+10’16h25 II-10) Insert interfacing (M. Devaux)  10' + 10’III) Scheduling and project management16h55 III-1) Magnet design and construction schedule (GdR)  20' + 10'

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I-1) EuCARD-HFM and its context.  (GdR)   15’+5’EuCARD 11 WPsNED heritageHFM: 6 tasksTask 3 dipole, the need for a Fresca (existant 10 T + HF) cable test facility, prospecting for future accelerator magnets and HFM technologiesTask 3 EuCard (only) specification for the dipole

Task 3, budget situation and explication of budget linksWork division between the partners

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II-1) Overview of the dipole  (J-M Rifflet)   15’+5’The specification (boundaries)Size considerations: coil, yoke (scaling laws)Conductor choiceNED heritage1 mm strand in 40 strand cable choiceMaximize current to minimize L (reference to Luc, Philippe)History of the designBasic block coil (Picture 2D baseline)Shell bladder and key, basic reasons for this5

II-2) Conductor choice, properties and procurement strategy (L. Oberli) 20’+10’1 mm strand (detailed explanation)Compromise between 1.25 mm and 0.8 mmCable size: 40 strands, reasonsAvailable providers, history of strand developmentProcurement strategyCable design parameters and cabling testsPrototype strands: first resultsPrototype cable: first results ( sample length )Comparison with models Jc used for the design (plot)6

II-3) Conceptual design (A. Milanese)  30’+10’Magnetic design (parameters, plots)2D (some optimisation reasons, mid plane etc)3D (max field etc)Mechanical design-          Présentation générale de la structure mécanique-          Design mécanique global 2D o   dimensioning of components o   quelques courbes de suivi de certains indicateurs,

Option without tube (20 Febr.)Life cycle construction and poweringModèle de calcul mécanique

3DGlobal structure7

II-4) Engineering design (P. Manil)  30’+10’Géométrie de la bobine : Bending test Saut de couche Etude géométrique Longueur de câble Présentation de la structurePoints critiques : support des têtes, bladders…Detailed engineeringUsinabilité / choix des matériaux : tube, tolérances, surfaces complexes…

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II-5) Quench protection (P. Fazilleau)  15’+10’Only a feasibility study not yet design decisionsQuench development, current decay, T max, T av, V maxCircuit parameters : dump resistorQuench heaters : needed ?, test usageQuench behaviour at 1 T, 5 T, 10 T and 13 TGradients T during quench (for later mechanical modeling)Parameter space9

II-6) SMC as preparatory project (J-C. Perez) 20’+10'Aim of the SMC seriesSMC descriptionSMC program (table with magnets / coils, dates, 7 coils )SMC1 test resultsLessons learned up to nowSMC3 progressFuture work (SMC4 40st) and aims10

II-7) Fabrication process study (M. Durante)  30' + 10’Question: which tooling is needed and what are the critical issues ? InsulatingWindingMould mountingReactionPreparation for impregnationIsland manipulationsSplicingInstrumentation sheetsGround insulationMouldingMounting the structureCoil pack mountingBladder and key operations11

II-8) Winding and tooling tests and insulation choice (F. Rondeaux)  20' + 10’First winding feasibility test April 2010Winding tests foreseenReaction mould design and testsInsulation schemes availableInsulation scheme choice processMoulding material and tests12

II-9) Cooling, heat transfer and cool-down issues (S. Pietrowicz )  20' + 10’Temperature and heat model of the magnetSteady state heat deposition at 4.2 KSteady state heat deposition at 1.9 KCooldown scenarioStresses in the magnet during cooldown13

II-10) Insert interfacing (M. Devaux)  10' + 5’Insert layoutInsert mountingField with insertQuench of insertQuench of dipoleRisk scenarios14

III-1) Magnet design and construction schedule (GdR)  20' + 10’Task breakdownDesign and construction flowchart with decision pointsDesign and construction schedule (incl SMC4)Potential bottlenecks15