GLOBUS-M. From concept to engineering
- Ioffe Physico-Technical Institute, St. Petersburg, Russia
- ORNL
GLOBUS-M spherical tokamak is to be designed and constructed at A.F.Ioffe Institute, St.Petersburg. Basic machine parameters, operational regimes, expected plasma parameters, as well, as necessary configuration of magnetic field coils were simulated and corresponding results are presented. Structural analysis of the machine was performed that gives the possibility to identify critical components of GLOBUS-M tokamak with detail analysis and tests of their behavior (central solenoid, conductor for central solenoid and toroidal field coil joints). Project expertise results in revision of some tokamak parts design which improves the machine performance (toroidal and partly poloidal field coils, vacuum vessel). The revision approach is outlined. GLOBUS-M tokamak is small spherical tokamak, designed to fit existing at Ioffe Institute thyrystor rectifiers power supplies. The basic experimental program will include investigation of tight aspect ratio plasma properties with emphasis on plasma confinement, stability, equilibrium, beta limits, density limits, RF auxiliary heating and current drive. The basic parameters of GLOBUS-M tokamak and the vertical assembled machine cross section are shown in Table 1 and Fig.1. In brackets the parameters which in principle are accessible are shown. In the tokamak design the traditional disposition of components were used. The vacuum vessel is the inner element of construction. To protect vacuum vessel from heat and energy deposition during the plasma pulse the in vessel components are used. 3 pairs of poloidal field (PF) coils and 16 toroidal field (TF) coils are placed outside W. For compensation of the stray magnetic field, produced by central solenoid (CS), 3 pairs of compensation coils (CC) are used. CS is wound in two layers around the inner legs of central post block of 200 mm diameter. Central post is slipped through the vacuum vessel inner bore of 218 mm diameter during the machine accemblence. The machine is supported by five stands. Four of them are supporting TF coils and W and one the central post.
- 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:
- 1022670
- 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
Similar Records
Globus-M central solenoid
GLOBUS-M central solenoid