The ion source body viewed from the accelerator. The accelerator will protrude into the ion source and the plasma grid will be at the level of the inner row of diagnostic flanges that can be seen at the bottom of the source. There will be four 'drivers' attached to the rear of the source. In the picture, three of the driver positions have metal flanges attached. The source body is made of stainless steel with a coating of copper on the inside to help distribute any heat load from the plasma in the ion source. The copper surfaces will later be coated with a thin layer of molybdenum that minimizes sputtering by ions from the plasma hitting the source body walls.