Laboratory of High Energies

Laboratory of High Energies
Name	Laboratory of High Energies
Established	1956
Research field	Particle physics, Accelerator physics
Director	Mikhail Meshcheryakov (first)
City	Moscow
Country	Soviet Union (historical), Russia
Affiliations	Joint Institute for Nuclear Research

Laboratory of High Energies. It is a major particle physics research center, historically part of the Joint Institute for Nuclear Research in Dubna. Founded during the rapid post-war expansion of nuclear physics, the laboratory was established to explore the fundamental constituents of matter using powerful particle accelerators. Its work has been integral to the development of high-energy physics in the Eastern Bloc, contributing significantly to the understanding of strong interactions and the discovery of new hadrons.

History

The laboratory was founded in 1956 as a key division within the newly created Joint Institute for Nuclear Research, an international scientific hub established by socialist states as a counterpart to CERN. Its creation was championed by prominent Soviet physicists like Dmitri Blokhintsev and Vladimir Veksler, the latter being a pioneer of synchrotron technology. Early development was rapid, with the laboratory's first major accelerator, the Synchrophasotron, becoming operational by 1957, enabling the Soviet Union to compete in the emerging field of high-energy physics. Throughout the Cold War, it served as a central facility for scientists from across the Warsaw Pact and allied nations, fostering significant collaboration despite geopolitical tensions.

Research and experiments

Primary research has historically focused on the study of strong interactions and the structure of atomic nuclei using beams of protons and deuterons. Experiments conducted at the laboratory's accelerators have extensively investigated pion-nucleus interactions, polarization phenomena, and the production of strange particles. A major program involved the use of liquid hydrogen and deuterium bubble chambers, such as the Mirabelle bubble chamber, to analyze particle collisions and decays. Research also encompassed the development of novel detection techniques and the study of cosmic ray interactions, bridging accelerator-based physics with astrophysical phenomena.

Accelerators and facilities

The laboratory's flagship facility was the 10 GeV Synchrophasotron, a weak-focusing proton synchrotron based on the designs of Vladimir Veksler. This machine was for a time the world's most powerful accelerator. It was later supplemented and succeeded by the Nuclotron, a superconducting synchrotron commissioned in 1993, which accelerated ions up to uranium. Supporting infrastructure included multiple beam lines, the Mirabelle bubble chamber, spark chamber arrays, and modern spectrometer systems. These facilities enabled a wide range of fixed-target experiments and advanced the development of superconducting magnet technology for accelerator science.

Scientific discoveries

The laboratory is renowned for its contributions to hadron spectroscopy. Its teams, often in collaboration with other institutes like the Institute for High Energy Physics in Protvino, discovered several resonant states, including the ρ-meson. A landmark achievement was the 1963 discovery of the anti-Ξ⁻ hyperon (or anti-cascade particle), which provided crucial evidence for the quark model and the concept of antimatter in baryons. Research here also yielded precise measurements of hadron properties and fundamental parameters of the strong interaction, contributing data essential for the development of quantum chromodynamics.

Collaborations and partnerships

As a core facility of the Joint Institute for Nuclear Research, the laboratory has always operated through extensive international partnerships. It collaborated closely with major Soviet centers like the Institute for High Energy Physics and the Kurchatov Institute. During the Cold War, it worked with scientists from across the Eastern Bloc, including those from East Germany, Poland, and Czechoslovakia. In later decades, partnerships expanded to include Western institutions such as CERN, Brookhaven National Laboratory, and Fermilab, particularly on experiments related to relativistic heavy-ion collisions and the Nuclotron-based ion collider facility project.

Directors and notable personnel

The laboratory's first director was Mikhail Meshcheryakov, a key organizer of Soviet nuclear science. He was succeeded by Anatoli Logunov, a theoretical physicist who later became rector of Moscow State University. Notable scientific leaders included Alexander Baldin, a renowned experimentalist who made significant contributions to polarization physics and served as director of the Joint Institute for Nuclear Research. Other eminent figures associated with the laboratory are theorist Isaak Pomeranchuk, accelerator physicist German Flerov, and experimentalist Lev Lapidus, who led major bubble chamber research programs.

Category:Particle physics laboratories Category:Joint Institute for Nuclear Research Category:Research institutes in Russia