Stable Spheromaks with Profile Control
A spheromak equilibrium with zero edge current is shown to be stable to both ideal MHD and tearing modes that normally produce Taylor relaxation in gun-injected spheromaks. This stable equilibrium differs from the stable Taylor state in that the current density j falls to zero at the wall. Estimates indicate that this current profile could be sustained by non-inductive current drive at acceptable power levels. Stability is determined using the NIMROD code for linear stability analysis. Non-linear NIMROD calculations with non-inductive current drive could point the way to improved fusion reactors.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 926008
- Report Number(s):
- LLNL-TR-400902
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stable Spheromaks Sustained by Neutral Beam Injection
Tearing and MHD Instability During Gun Injection into a Spheromak
A fully relaxed helicity balance model for an inductively driven spheromak
Journal Article
·
Wed May 14 00:00:00 EDT 2008
· Journal of Fusion Energy
·
OSTI ID:947230
Tearing and MHD Instability During Gun Injection into a Spheromak
Technical Report
·
Thu May 11 00:00:00 EDT 2000
·
OSTI ID:15013537
A fully relaxed helicity balance model for an inductively driven spheromak
Journal Article
·
Wed Nov 14 23:00:00 EST 2007
· Physics of Plasmas
·
OSTI ID:21069887