Implementing an X-ray tomography method for fusion devices

Abstract In fusion devices, the X-ray plasma emissivity contains essential information on magnetohydrodynamic activity, magnetic equilibrium and transport of impurities, in particular for tokamaks soft (SXR) energy range 0.1–20 keV. this context, tomography diagnostics are a key method to estimate local from given set line-integrated measurements. Unfortunately, reconstruction problem is mathematically ill-posed, due very sparse noisy measurements, requiring an adequate regularization procedure. The goal paper introduce, with didactic approach, some methodology tools develop algorithm. Based simple 1D problem, Tikhonov described detail study optimal parameters, such as choice spatial resolution parameter. A proposed perform situ sensitivity position cross-calibration detectors iterative procedure, by using redundancy data variability reconstructed profiles. Finally, basic steps build synthetic more realistic tokamak environment introduced, together assess capabilities 2D