Implications of NbTi Short-Sample Test Results and Analysis for the ITER Poloidal Field Conductor Insert (PFCI)

Author

Zanino, R. ; Bagnasco, M. ; Baker, W. ; Bellina, F. ; Bruzzone, P. ; della Corte, A. ; Ilyin, Y. ; Martovetsky, N. ; Mitchell, N. ; Muzzi, L. ; Nijhuis, A. ; Nunoya, Y. ; Okuno, K. ; Rajainmaki, H. ; Ribani, P.L. ; Ricci, M. ; Salpietro, E. ; Richard, L.

Author_Institution

Dipt. di Energetica, Politecnico di Torino

Volume

16

Issue

2

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

886

Lastpage

889

Abstract

As the test of the PFCI is foreseen in 2006 at JAERI Naka, Japan, it is essential to consider in detail the lessons learned from the short NbTi sample tests, as well as the issues left open after them, in order to develop a suitable test program of the PFCI aimed at bridging the extrapolation gap between measured strand and future PF coil performance. Here we consider in particular the following issues: 1) the actual possibility to quench the PFCI conductor in the T_CS tests before quenching the intermediate joint, 2) the question of the so-called sudden or premature quench, based on SULTAN sample results, applying a recently developed multi-solid and multi-channel extension of the Mithrandir code to a short sample analysis; 3) the feasibility of the AC losses calorimetry in the PFCI

Keywords

calorimetry; fusion reactor design; fusion reactor materials; superconducting coils; superconducting materials; AC losses calorimetry; ITER poloidal field conductor insert; Mithrandir code; NbTi; NbTi short-sample test results; PF coil performance; PFCI conductor; SULTAN sample; T_CS tests; extrapolation gap; fusion reactors; intermediate joint; measured strand; multisolid extension; quenching; superconducting coils; Calorimetry; Conductors; Current measurement; Loss measurement; Niobium compounds; Performance analysis; Radio frequency; Superconducting coils; Testing; Titanium compounds; Fusion reactors; ITER; modeling; superconducting coils;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2006.873318

Filename

1642989