Globus-M central solenoid
- Ioffe Physico-Technical Institute, St. Petersburg, Russia
- ORNL
The central solenoid (CS) is identified as a critical component of GLOBUS-M spherical tokamak. The CS coil is located between the 108 mm diameter toroidal field coil inner legs bundle and the 218 mm diameter bore of the vacuum vessel. A space restriction requires a high accuracy of the CS conductor winding. Strong magnetic cyclic loads acting on the solenoid require high strength continuous conductor of 66 meters total length for the solenoid manufacturing. The CuAg alloy of HKO1 type manufactured by OUTOKUMPU OY in Pori, Finland is considered as a canldate material for the solenoid winding. The CS structural analysis has been performed. Mechanical cyclic tests of the material up to 6 x 10{sup 5} cycles in different regimes of loading have been done. The perfomed stress analysis and cyclic tests show that the hollow conductor from cold extruded CuAg alloy can be considered as a basic candidate material for the GLOBUS-M central solenoid manufacturing. The required trapezoidal shape of the conductor cross section was specified. To verify winding procedure whch could provide the necessary accuracy of dimensions and mechanical performance it is planned to produce and test the solenoid prototype of full scale radius and shorter length. In particular strain measurements using mechanical probes (strain gauges) will allow to check stress state simulations.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 1022669
- Resource Relation:
- Conference: 16th IEEE/NPSS Symposium on Fusion Engineering - Seeking a New Energy Era (SOFE 95), Champaign, IL, USA, 19951001, 19951001
- Country of Publication:
- United States
- Language:
- English
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