The "Compact Toroid Injection Experiment" tomographic imaging system

The design, construction and operation of a tomographic imaging system on t he Compact Toroid Injection Experiment is described. The system measures th e total radiated power over energies from visible light up into the extreme ultraviolet. It then reconstructs two dimensional profiles from the data. The reconstruction routine is based on a method known as second order regul arization which finds a compromise between smoothness and fit to the data. This method was found to have the best overall fidelity to test images. The hardware and overall reconstruction were calibrated using two different so urces. First results from the system under real experimental conditions are presented. (C) 2000 American Institute of Physics. [S0034-6748(00)04111-3] .