Associate Research Physicist - ITER & Tokamak/DIII-D
The successful candidate will assist in the development of an edge main ion spectroscopic system on the DIII-D national fusion facility and to use the system in conjunction with other diagnostics to plan, perform and analyze experiments aimed at understanding transport in the boundary region of plasma. The goal will be to develop a predictive understanding of pedestal transport required to optimize edge plasma performance and extrapolate to next step fusion experiments.
The successful candidate will plan, perform and analyze experiments at the DIII-D National Fusion Facility in San Diego to understand the transport properties of the main-ions in the H-mode pedestal. Installation of a new spectroscopic system dedicated to main-ion charge-exchange recombination spectroscopy measurements near the plasma boundary will enable high-resolution measurements of the main-ion temperature, density and toroidal velocity. The primary research objective is to use the new main ion spectroscopic measurement capability to assess the transport properties of the main ions in the edge of the plasma in a variety of conditions and plasma regimes of operation. Key transport issues to address include particle, momentum and energy transport in the pedestal and to test leading models of transport against experimental measurements. In particular, a high priority topic will be the characterization and understanding of intrinsic plasma rotation of the main ions near the plasma boundary and the transport of toroidal angular momentum into the plasma core in a range of plasma conditions including Ohmic, L-mode and H-mode discharges. Responsibilities will include spectroscopic diagnostic development and installation, diagnostic validation studies with atomic modeling simulations and routine operation of the DIII-D spectroscopy systems. The candidate is expected to interact with modeling groups performing gyrokinetic simulations of turbulent transport in order to interpret the experimental observations and plan experiments on DIII-D.
Applicant should have a Ph.D. in plasma physics, with preference given to applicants with experience in visible spectroscopy and in conducting experiments on plasma devices. Strong computational skills are preferred.
Applicants should have a strong experimental background and preferably have familiarity with visible spectroscopy. Strong computations skills are preferred for analyzing data and comparing to model predictions.