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Published on: June 9, 2016
Proton deflectometry analysis in magnetized plasmas: Magnetic field reconstruction in one dimension
W Fox1,2, G Fiksel3, D B Schaeffer2
1<a href="https://ror.org/03vn1ts68">Princeton Plasma Physics Laboratory</a>, Princeton, New Jersey 08543, USA.
Abstract:
Proton deflectometry is used in magnetized high-energy-density plasmas to observe electromagnetic fields. We describe a reconstruction algorithm to recover the electromagnetic fields from proton fluence data in 1-D. The algorithm is verified against analytic solutions and applied to example data. Next, we study the role of source fluence uncertainty for 1-D reconstructions. We show that reconstruction boundary conditions can be used to constrain the source fluence profile and use this to develop a reconstruction using a specified pair of boundary conditions on the magnetic field. From these considerations, we experimentally demonstrate a hybrid mesh-fluence reconstruction technique where fields are reconstructed from fluence data in an interior region with boundary conditions supplied by direct mesh measurements at the boundary.
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