The ten-meter diameter target chamber was assembled from 18 four-inch-thick aluminum sections and was installed with one of the largest cranes in the world. It was then coated with a special 16-inch-thick neutron-shielding concrete shell. Weighing about one million pounds, the complete target chamber has been precision aligned to better than one-millimeter accuracy. The louvered "first wall" protects the chamber from possible flying debris during shots. Visible are the many portholes where diagnostics will be installed to record and collect data from experiments.