[en] The status and basic research program of the LAMPF linac are described. LAMPF is based on a linear proton accelerator of variable energy up to 80O MeV and designed intensity of 1000 μA. The present operating current is 150 μA. Three injectors are utilized. Two beams of the H⁺ and H^- are accelerated simultaneously. A polarized H^- beam was achieved. An important feature of LAMPF is the capability to provide beam to as many as 13 experiments simultaneously. Primary beam can occupy a phase space of 0.1 mr mm. The data of the basic research program which include experiments on atomic physics, nuclear chemistry, nuclear physics and particle physics are presented. Practical applications of accelerator beams and accelerator technologies are shown. The cancer treatment with negative pions up to 100 MeV energy is under way