Details

Autor(en) / Beteiligte

• Veres, G.
• Pitts, R.A.
• Bencze, A.
• Márki, J.
• Tál, B.
• Tye, R.

Titel

Fast radiation dynamics during ELMs on TCV

Ist Teil von

• Journal of nuclear materials, 2009-06, Vol.390, p.835-838

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2009

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• Total radiative powers measured by AXUV diode based bolometer cameras have been measured in lower single null, third harmonic electron cyclotron resonance (X3 ECR) heated TCV ELMing H-mode discharges. Although, the non-flat spectral response of the diodes means that total radiated powers can be in error by as much as a factor 2, with time resolution on the order of several microseconds, the cameras can resolve plasma radiation dynamics on the ELM timescale. Observations show that: (i) most of the radiation comes from the divertor and outer midplane regions, (ii) about 70% of the ELM induced radiation occurs in the first third of the ELM cycle and (iii) only a maximum of ∼8% of the ELM energy is lost through radiation.