X-ray tomography on IR-T1 tokamak
- I.A.U., Tehran (Iran, Islamic Republic of). Plasma Physics Research Center
Measurements of soft X-ray emission from the IR-T1 Tokamak plasma have been analyzed with tomographic reconstruction methods. The detector system is on a circular arc view IR-T1 Tokamak plasmas through a thin beryllium window to provide poloidal imaging of soft X-ray emission (SXR) in the 600 ev--20 Kev range. Each detector has an active area 3 {times} 20 mm{sup 2}. The signals are digitized every 4 {micro} or 8 {micro}s by use of 8 bit transient recorders and the frequency response of detector--preamplifier system is from 10 Hz--200 kHz. This method has been used to study the internal disruptions and m = 1 oscillation. The reconstructed images in the phase before a Sawtooth crash have shown the hot plasma core move gradually toward one side, this is considered that as the increasing m = 1 kink mode.
- OSTI ID:
- 423064
- Report Number(s):
- CONF-960634--
- Country of Publication:
- United States
- Language:
- English
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