Target 1 Flight Path 05 (1FP05) utilizes low-energy neutrons from a water moderator on the 1L target.
Target 1 Flight Path 05 (ER1) utilizes thermalized neutrons from the 1L target. This flight path is located in experiment building ER-1 (MPF-30) at the Manual Lujan Jr. Neutron Scattering Center at LANSCE. The flight path utilizes a liquid mercury shutter to control the neutron beam transmission from the target. The relatively short flight path (6 meters) is ideal for experiments that benefit from a high neutron flux. This flight path is primarily used for fission and total cross section measurements using parallel-plate ionization chambers.
The Lujan Flight Paths Including FP5.