Reflectometry Density Profile Measurements in Turbulent Plasmas

One of the limiting factors in reflectometers when trying to measure the density profile in fusion plasmas is the existence of a fraction of experiments where the measurement becomes impossible: very noisy signals leading to nonsense density profiles. Those so called “bad shots” are usually linked with strongly turbulent plasmas and the remaining problem is to be able to assess “a priori” if the data coming from a given experiment will correspond to a normal profile or if they will be meaningless.