Lev Andreyevich Artsimovich (Russian: Лев Андреевич Арцимович, February 25, 1909 – March 1, 1973), also transliterated Arzimowitsch, was a Soviet physicist who is regarded as the one of the founder of Tokamak— a device that produces controlled thermonuclear fusion power. Prior conceiving the idea on nuclear fusion, Artsimovich participated in the former Soviet program of nuclear weapons, and was a recipient of many former Soviet honors and awards. Biography Artsimovich was born on 25 February 1909 in Moscow in Russian Empire. His family had Polish nobility roots; nonetheless, he was described as Russian by his autobiographer in 1985. His grandfather, a professor, was exiled to Siberia after the Polish uprising against Tsarist Russia in 1863 and married a Russian woman, later settled in Smolensk. His father was educated in Lviv University; his mother, a pianist trained in Switzerland. In 1923, Soviet establishment moved the Artsimovich family (due to suspicion of Anti-bolshevist activity) to Minsk, where he found employment in Railroad industry there and started training towards becoming a railroad engineer. After his father found an employment in the Belarus State University, Artsimovich was able to attend the physics program at the Belarus State University, and graduated with a specialist degree in physics in 1928–29. After moving to Moscow, he found employment in Artem Alikhanian's laboratory, and joined the staff at the Ioffe Institute in 1930. Initially, he worked on the problems relating to nuclear physics and unsuccessfully defended his thesis for Candidate of Sciences degree in 1937 and in 1939 at the Leningrad Polytechnical Institute, only receiving a written endorsement from the Ioffe Institute. Artsimovich, in his lifetime, was recommended by many leading Soviet physicists to be conferred with Doktor Nauk (a Russian PhD) but the recommendations were later dismissed. In 1945, Artsimovich joined the Soviet program of nuclear weapons, working on electromagnetic method of Isotope separation of Uranium at the Laboratory No. 2 along with Isaak Pomeranchuk. He was given Russian espionage files by Soviet agencies on American Manhattan Project on electromagnetic method. But the Uranium enrichment under Artsimovich failed when it proved too costly since the electricity required for this work could not have produced by Soviet powergrid at that time. Despite being removed by Beria, Artsimovich continued work on gas discharges with the support from Kurchatov at his Laboratory No. 2, and after 1949, his work focused towards the field of nuclear fusion by producing the Lithium-6