Mechanical Pre-Compression System of the JT-60SA Central Solenoid
| Autor: | Katsuhiko Tsuchiya, Kazuhiro Nomoto, Kaname Kizu, Yutaro Itashiki, Haruyuki Murakami, Kazuya Hamada |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Tokamak
Computer science Process (computing) Mechanical engineering Solenoid Condensed Matter Physics Target range 01 natural sciences Finite element method Electronic Optical and Magnetic Materials law.invention law 0103 physical sciences Pre compression Electrical and Electronic Engineering 010306 general physics |
| Zdroj: | IEEE Transactions on Applied Superconductivity. 30:1-5 |
| ISSN: | 2378-7074 1051-8223 |
| Popis: | The mechanical loading technology has been developed for the pre-compression of central solenoid for the tokamak device of JT-60 super advanced (JT-60SA) being constructed in Japan. Four central solenoid modules were manufactured one by one, then 4 modules were stacked. The pre-compression were conducted to bind stacked 4 modules by support structure called tie-plate as a final process of the central solenoid manufacturing. The pre-compression jigs were designed by using the finite element analysis taking into account of plastic deformation of the jigs and the tie-plate. The pre-compression was performed using developed jigs. The hydraulic jacks and pumps were separately installed to the each tie-plate to control the pre-compress load individually. Since the pre-compress load changed by insulation creeping after initial loading, additional shims were inserted for the tie-plate with small load. Finally, pre-compress load of all tie-plate became within the target range. These results indicate that the pre-compression has been successfully completed using the developed jigs. In this paper, the design and analysis of the pre-compression jigs and the result of the pre-compression are reported. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|