The US ITER Role in Magnet Technology

Transcription

1 The US ITER Roe in Magnet Technoogy Timothy A. Antaya Fusion Technoogy and Engineering Division MIT Pasma Science and Fusion Center Representing Many UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)

2 Introduction Magnets are a arge part of making ITER happen Most go forward scenarios have the US contributing some significant part of the magnet system With imited avaiabe resources is that a good use of doars? This presentation wi attempt to represent (in 10 minutes) a coective YES and define the organizationa eements and deiverabes for the US with respect to such a contribution It incudes consideration of: The US experience as a participant in the ITER EDA Feedback from the present ITER centra team State of the ITER Magnet Systems design basis Recommendations from members of the high fied magnet infrastructure (suppiers in the US) DOE (OFES/VLT) What?; ITER Panning Activity (Sauthoff/PPPL)-How Much?; BPAC (Prager)- 7 Virtues? MIT experience as a contributor to most a major US magnetic fusion initiatives and advance reactor studies- resuting data and toos MIT present experience with advanced conductor and magnet designs for ICF, acceerators, detector magnets, interaction/fina focus magnets, MRI, Medica appications, Launchers, Separators and Levitation and the respective infrastructure and deveopmenta needs in these programs UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)

3 ITER Superconducting Magnet System UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)

4 ITER Magnetic System- some detais Conductor Nb3Sn- CS and TF NbTi- PF and correction cois 355 kiua direct cost (x1.439 $US2002) Centra Soenoid Six identica modues, 700 tons tota mass Modues composed of 4 ayer and 6 ayer CICC pancakes 41 kiua conductor (from above category) kiua Toroida Fied Magnets 18 cois assembed as 9 cased doubets Winding aid in channeed pates to take the shear TF structure carries the net magnetic oad and many interfaces 117 IUA Pooida Fied Magnets and Correction Cois PF cois wi have to be buit on site Correction cois aso NbTi, simiar scae arge radius 49.7 kiua Structures, Feeders add another 209 kiua for a tota of 762 kiua UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)

5 Why Shoud USA Participation Incude Magnets? ITER wants us to incude magnets and conductor in the US scopeeverage on management structure is possibe The buk of the required R&D doars have aready been spent (because magnets are on the critica path) Conductor improvements (HEP, KSTAR ) have further increased margins Magnets (obviousy) are centra to a tokamak US a historica key contributor to the ITER EDA (CSMC) Baseine winding pack technoogy (CICC) originated in the US (strongest design basis, codes, toos here) Confinement and stabiity depends intimatey on fied errors (we have a tradition in the US of couping fabrication toerances to fied error mitigation) Operationa Characteristic [off norma events] aso modeed here- Transient oads and disruptions vs. coi forces /stabiity We have the inteectua and pant capabiity to participate successfuy On going participation in ITER continues We see a we defined U/Lab/Industria go forward mode as appropriate The magnet subsystem of most interest to us (CS) has the owest risk, a sound design basis, and cear technoogica benefits to the US advanced magnet infrastructure (deveopment programs and industry) UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)

6 ITER Centra Soenoid Mode Coi Test Program Objectives: Perform mode coi demonstration tests under ITER operating conditions DC operation to 13T, 46 ka and 640 MJ (inner + outer) Pused operation to simuate the ITER scenario for the CS 0.6 T/s to 13T Characterization of the performance of the conductors and joints AC osses, current sharing temperature, quench properties Characterization of the Mechanica, Therma and hydrauic behaviors no instabiities observed Limited ifetime testing with more than 10,000 cyces for the inserts 1.2 T/s to 13T for the Nb3Sn insert Test of insert cois using a ikey conductor types A of these objectives were competed successfuy UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)

7 US Participation in the CSMC ( ) Conductor- IGC, Teedyne Wah Chang Cabing- BIW Conduit Materia- Inco Aoys Inner Modue Fab- Lockheed Martin, MIT Winding, heat treatment (Wa Comonoy), insuation, impregnation, assemby SC Buses and Structures- Lockheed Martin Testing Program Support- MIT, LLNL (LM core group now at Genera Atomics) UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)

8 CSMC Conductors UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)

9 Importance of CSMC to ITER ITER CS performance requirements exceeded, anayses tested, structure confirmed Mutipe conductor vendors invoved-us, Japan, EU and RF Demonstration of the wind, react, insuate and transfer process on a usefu arge scae Process specification demonstrated successfu contro of SAGBO Demonstration of two types of tooing capabiity, terminations, heat treatment and insuation (US and Japan processes) Structures and components for assemby Providing for axia preoading and mechanica integrity of the assembies Demonstration of interface contro among 4 parties incuding QA and icensing (a meeting Japan pressure vesse code requirements) UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)

10 Importance of CSMC to the US Coaboration mode was successfu- University/Nationa Lab/Industria Team Mode: U/Lab manages the technica baseine: R&D programs; Anaysis: E&M, Structura, Stabiity, Therma, Therma- Hydrauic, Fied Errors; Quaification Testing; Interfaces Lead Industria team buids the production faciity- conductor integration, winding, heat treatment, insuation, assemby Integrated Subsystem Vendors: strand, cabing, conduit, extrusion, structure, instrumentation Buid-to-Print quotations for components Natura Productivities of each group are expoited We think that this is sti the right mode for the US to consider for ITER Construction UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)

11 Present USA ITER Magnet Reated Effort Same basic CSMC team is making an assessment of the ITER CS baseine in support of the US negotiation position Bottoms up cost estimate* to a compete programmatic WBS Break out ITER Package Costing (conductor, CS, magnet feeders) Preiminary manufacturing feasibiity assessment Last Mode Coi Test Meeting (Workshop on Magnet Technoogy) was hed at MIT in August days, 57 presentations incuded most key US, Japan, EU and RF Lab and ITER Team members Most ITER magnet technica issues discussed Aso incuded contributions from non-iter advanced magnet programs Garching Magnet Meeting (this week)- 7 US contributions Martovetsky (LLNL)- ITER Mode Cois- test resuts & assessment Feng (MIT) Anaysis of CS Performance and Conductor Design Minervini (MIT)- (1)ITER Magnet R&D Priorities; (2) US Strand Capabiities, (3) Incooy 908 Status Schutz (MIT)- (1)Modeing Strain; (2)Goba Strand Production & Scheduing SOFE- Titus (MIT) ITER CS Inner Transition Stress Anaysis Some interest in PTF joint testing for EU Team Loan CSMC ayer winder for deveopment work for EU team *(CSMC EDA activity did not have such a baseine at the start; to manage the effort we think this is the most important first step) UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)

12 Proposed US Scope CS, CS conductor, CS Structure (vertica integration best) Soe source ~$200M (US2002) Share with Japan (50/50)~$100M (US2002) Supporting (Management, Procurement, Liaison and Technoogy) Program $32M ($3.5M/yr over 9 year program) (Conductor and winding pack components important for US industry) Roe in the ITER Centra Team Supporting anaysis and testing Magnet review boards Magnet instrumentation deveopment- fow, temp, quench Requirements Docs; Design Desc Docs; Critica Item Specifications and procurement packages [at east for systems we buid] Fied quaity and error anaysis Interfaces UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)

13 US ITER CS Programmatic Goas Contribute to ITER and add vaue Support US Fusion Science Goas Strengthen US magnet infrastructure Add more students to magnet technoogy program Link technoogy deveopments (design, anaysis, components, winding packs and structures) to other fieds and programs We see 10 Tesa proton radiation therapy systems We see 15 Tesa focusing magnets for coiders and secondary beam production We see nove A15 conductor configurations in evitation/propusion systems We see A15 conductor performance / enhancements assisting basic and appied science to move forward We see ramp rate imitations, radiation resistance and force density imits as key technoogy issues for a number of appications UFA Meeting, Univ. Maryand, 7 May 2003 antaya@psfc.mit.edu / (617)