The new reconstruction method for velocity profile in TS6 device: Phantom and initial results
Abstract
The field related to computer tomography of experimental measurements needs constant progress as the popular methods like ME have serious flaws. To overcome these limitation, full Helmholtz's decomposition theorem along with analytical (Maximum Fisher and max. likelihood) and algebraic(linear iterative reconstruction and solution based regularization) reconstruction methods have been proposed to carry inverse reconstruction problem for TS-6 merging plasma data to calculate velocity components of flow. Combining these methods along with solution regularization method made it possible to obtain radial velocity profile from data received from multiple angles with high accuracy which is not in reach by other algorithms. The Vr profile has maximum in the outflow jet which is predicted by simulation.The number of channels necessary for this method is several times less than the necessary number for analogous methods. Reconstructed phantom profile showed good capacity of proposed method for ring-like emissivity profile compared to Fourier and ME methods with exact numbers of channels. However, before using this method to analyze experimental data, a set of simulation data with well-known velocity profile will be used to double check the method.
JSPS research fellowship for young scientists.- Publication:
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APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..DPPY10047A