000202280 001__ 202280
000202280 005__ 20190812205809.0
000202280 0247_ $$2doi$$a10.1016/j.fusengdes.2013.12.031
000202280 022__ $$a0920-3796
000202280 02470 $$2ISI$$a000341465400167
000202280 037__ $$aCONF
000202280 245__ $$aPre-conceptual studies and R&D for DEMO superconducting magnets
000202280 260__ $$bElsevier Science Sa$$c2014$$aLausanne
000202280 269__ $$a2014
000202280 300__ $$a4
000202280 336__ $$aConference Papers
000202280 520__ $$aThe DEMO plant will demonstrate by mid century the feasibility of electric power generation by nuclear fusion. Since 2011, conceptual design studies are coordinated by the EFDA Power Plant Physics and Technology (PPPT) Division, with the aim of identifying requirements, propose design approaches and start R&D for the magnet system of DEMO. The input and generic boundary conditions are given by the system codes: the major radius of the tokamak is about 9m. The proposed operating current at 13.6T peak field is 82 kA, placing the DEMO TF conductor at substantially higher performance compared to ITER TF (68 kA/11.5 T). The innovative winding layout is a graded, layer wound with Nb3Sn/NbTi hybridization, aiming at minimizing the size and the cost of the superconductor. Two options are considered for the Nb3Sn conductor: one a "wind&react" cable-in-conduit (CICC) with reduced void fraction and rectangular shape. The other conductor is a "react&wind" flat cable with copper segregation and thick steel conduit assembled by longitudinal weld. The conductor designs were first drafted in 2012 and updated in 2013 based on a first round of assessments, which includes electromagnetic, thermal-hydraulic and mechanical analysis. The manufacture of full size prototype conductors is planned in 2014. The technical requirement of the DEMO superconducting magnets is highlighted in comparison to ITER and other fusion devices. The large size of the DEMO tokamak is the main challenge for the demonstration of the feasibility of power generation by fusion. Together with the technical issues, the cost of the superconducting magnets will be eventually the crucial aspect to promote the establishment of nuclear fusion as a primary energy source in the coming centuries. (C) 2014 Elsevier B.V. All rights reserved.
000202280 6531_ $$aFusion energy
000202280 6531_ $$aSuperconducting magnets
000202280 6531_ $$aToroidal field coils
000202280 6531_ $$aDEMO
000202280 6531_ $$aWinding pack
000202280 6531_ $$aForce flow superconductors
000202280 700__ $$aBruzzone, Pierluigi
000202280 7112_ $$dSEP 15-20, 2013$$cBarcelona, SPAIN$$a11th International Symposium on Fusion Nuclear Technology (ISFNT)
000202280 773__ $$j89$$tFusion Engineering And Design$$k7-8$$q1775-1778
000202280 909C0 $$pCRPP
000202280 909C0 $$pSPC$$0252028$$xU10136$$xU12267$$xU12269$$xU12271$$xU10559$$xU12273$$xU10557$$xU12270$$xU10137$$xU10636$$xU12266$$xU10635$$xU10558$$xU12268$$xU12272
000202280 909CO $$pconf$$pSB$$ooai:infoscience.tind.io:202280
000202280 917Z8 $$x112823
000202280 937__ $$aEPFL-CONF-202280
000202280 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000202280 980__ $$aCONF