Erosion of plasma-facing components under simulated disruption-like conditions using an electrothermal plasma gun
- North Carolina State Univ., Raleigh, NC (United States)
The NCSU electrothermal plasma gun, SIRENS, has been used to evaluate the erosion behavior of plasma-facing components under conditions simulating plasma disruption in tokamaks. The device is capable of producing conditions with heat fluence up to 10 MJ/m{sup 2} over 0.1 and 0.25 ms pulse duration. In future large tokamaks, plasma-facing components are expected to receive heat fluxes during a plasma disruption, which may exceed 100 GW/m{sup 2} over 0.01-5 ms. The vapor, which is developed at the ablating surface, absorbs a fraction of the incoming plasma energy. Candidate plasma-facing materials have been exposed to heat fluxes in the SIRENS facility (primarily from a blackbody spectrum photons), up to 100 GW/m{sup 2} over 0.1-0.25 ms. The vapor shielding effect has been demonstrated and analyzed for the divertor candidate materials.
- OSTI ID:
- 41450
- Report Number(s):
- CONF-940630-; ISSN 0748-1896; CNN: Contract DASG60-90-C-0028; Contract DAAA22-91-M-4001; Contract DAAA22-92-C-0170; Contract AB-8360; TRN: 95:002923-0035
- Journal Information:
- Fusion Technology, Vol. 26, Issue 3; Conference: 11. topical meeting on the technology of fusion energy, New Orleans, LA (United States), 19-24 Jun 1994; Other Information: PBD: Nov 1994
- Country of Publication:
- United States
- Language:
- English
Similar Records
The use of an electrothermal plasma gun to simulate the extremely high heat flux conditions of a tokamak disruption
Surface Erosion of Plasma-Facing Materials Using an Electrothermal Plasma Source and Ion Beam Micro-Trenches