27 August 2017 to 1 September 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

Winding Deformation Caused by Reaction Heat-treatment for ITER TF coil

30 Aug 2017, 13:15
1h 45m
Posters Area

Posters Area

Poster Presentation of 1h45m B1 - Superconducting Magnets for Fusion Wed-Af-Po3.02

Speaker

Dr Tsutomu Hemmi (National Institutes for Quantum and Radiological Science and Technology)

Description

National Institutes for Quantum and Radiological Science and Technology (QST) has responsibility as Japanese domestic agency (JADA) to procure 9 Toroidal Field (TF) coils in the ITER project. The high mechanical and electrical reliabilities have to be ensured for the operation of the ITER for 20 years. For this objective, the Radial Plate (RP) structure is employed to avoid accumulating the electromagnetic loading to the insulation material. Since Nb3Sn is brittle, the bending strain exceeding 0.1% cannot be applied after the reaction heat-treatment. Thus, the conductor is wound to D-shape and then heat-treated before it is transferred into the RP groove. To transfer the heat-treated conductor into the RP groove, the accuracy of ±0.02%, which is ±7 mm on 1-turn of 34 m, in conductor length is necessary after the winding and the heat-treatment. In addition, the winding deformed by the reaction heat-treatment has to be transferred into the RP groove within the bending strain of ±0.1%. The winding deformation caused by the reaction heat-treatment was evaluated. This paper shows the evaluated winding deformation and the bending strain calculated to transfer the winding into the RP grooves.

Submitters Country Japan

Primary authors

Dr Tsutomu Hemmi (National Institutes for Quantum and Radiological Science and Technology) Hideki Kajitani (National Institutes for Quantum and Radiological Science and Te) Dr Kunihiro Matsui (National Institutes for Quantum and Radiological Science and Technology) Mr Minoru Yamane (National Institutes for Quantum and Radiological Science and Technology) Ms Kaori Sakaguchi (QST) Ms Mio Nakamoto (National Institutes for Quantum and Radiological Science and Technology) Toru Saito (QST) Mr Shinji Ando (QST) Mr Katsutoshi Takano (QST) Dr Norikiyo Koizumi (National Institutes for Quantum and Radiological Science and Technology)

Presentation Materials

Your browser is out of date!

If you are using Internet Explorer, please use Firefox, Chrome or Edge instead.

Otherwise, please update your browser to the latest version to use Indico without problems.

×