The HFIR hydraulic tube (HT) facility provides the ability to irradiate materials for durations less than the standard ~23 day HFIR fuel cycle, which is ideal for the production of short half-life medical isotopes that require retrieval on demand. The system consists of the necessary piping, valves, and instrumentation to shuttle a set of long aluminum capsules (called rabbits) between the capsule loading station and the flux trap in the reactor core. The capsule loading station is located in the storage pool adjacent to the reactor vessel pool. A full facility load consists of nine vertically stacked capsules.