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A reconstruction method based on evolution of partial differential equation for the Laser-driven Ion-beam Trace Probe
1State Key Lab of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China.
Abstract:
The Laser-driven Ion-beam Trace Probe (LITP) is a new poloidal magnetic field (Bp) diagnostic method in tokamak devices. It measures the ion displacements which are linear integrations of Bp along the ion beam traces, and a proper tomography method is necessary for the Bp reconstruction. A tomography method based on the solution of partial differential equation is used. The diffusion term and perturbation term are used to avoid the divergence and smooth the reconstructed results. Numerical results show that both the diffusion term and the perturbation term obviously improved the reconstruction results of Bp for LITP.
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