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FFAG
A Fixed-Field alternating gradient Accelerator (FFA; also abbreviated FFAG) is a circular particle accelerator concept that can be characterized by its time-independent magnetic fields (''fixed-field'', like in a cyclotron) and the use of alternating gradient strong focusing (as in a synchrotron). In all circular accelerators, magnetic fields are used to bend the particle beam. Since the magnetic force required to bend the beam increases with particle energy, as the particles accelerate, either their paths will increase in size, or the magnetic field must be increased over time to hold the particles in a constant size orbit. Fixed-field machines, such as cyclotrons and FFAs, use the former approach and allow the particle path to change with acceleration. In order to keep particles confined to a beam, some type of focusing is required. Small variations in the shape of the magnetic field, while maintaining the same overall field direction, are known as weak focusing. Strong, or al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Midwestern Universities Research Association
The Midwestern Universities Research Association (MURA) was a collaboration between 15 universities with the goal of designing and building a particle accelerator for the Midwestern United States. It existed between 1953–1967, but could not achieve its goal in this time and lost funding. It was thought that President John F. Kennedy would have supported the MURA machine, while one of President Lyndon B. Johnson's first actions was the shutdown of the MURA machine and laboratory. In its formative years, Donald Kerst was the director of MURA. At this institution, Keith Symon invented the FFAG accelerator, independently to Tihiro Ohkawa, which combines several concepts of cyclotrons and synchrotrons. FFAG concepts were extensively developed in MURA. The proposed MURA accelerators were scaling FFAG synchrotron A Fixed-Field alternating gradient Accelerator (FFA; also abbreviated FFAG) is a circular particle accelerator concept that can be characterized by its time-independent magn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collider
A collider is a type of particle accelerator which brings two opposing particle beams together such that the particles collide. Colliders may either be ring accelerators or linear accelerators. Colliders are used as a research tool in particle physics by accelerating particles to very high kinetic energy and letting them impact other particles. Analysis of the byproducts of these collisions gives scientists good evidence of the structure of the subatomic world and the laws of nature governing it. These may become apparent only at high energies and for tiny periods of time, and therefore may be hard or impossible to study in other ways. Explanation In particle physics one gains knowledge about elementary particles by accelerating particles to very high kinetic energy and letting them impact on other particles. For sufficiently high energy, a reaction occurs that transforms the particles into other particles. Detecting these products gives insight into the physics involved. To d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keith Symon
Keith Randolph Symon (March 25, 1920 – December 16, 2013) was an American physicist working in the fields of accelerator physics and plasma physics. Symon graduated summa cum laude, Phi Beta Kappa, from Harvard in 1942 with a BA in Philosophy and Mathematics. In 1948 he was awarded a PhD in Physics. He taught physics at Wayne State University in Detroit until 1955. Symon was professor of physics at the University of Wisconsin until his retirement in 1992 when he became emeritus professor. From 1956 to 1967 he was on the staff of the Midwestern Universities Research Association (MURA), a collaboration of Big Ten universities, the University of Chicago and Notre Dame. In 1982 and 1983 he was acting director of the Madison Academic Computing Center and from 1983 to 1985, acting director of the UW-Madison Synchrotron Radiation Center. His textbook, "Mechanics", has been a staple in physics classes since publication of the first edition in 1953. It has been published in multiple lang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donald Kerst
Donald William Kerst (November 1, 1911 – August 19, 1993) was an American physicist who worked on advanced particle accelerator concepts (accelerator physics) and plasma physics. He is most notable for his development of the betatron, a novel type of particle accelerator used to accelerate electrons. A graduate of the University of Wisconsin, Kerst developed the first betatron at the University of Illinois at Urbana Champaign, where it became operational on July 15, 1940. During World War II, Kerst took a leave of absence in 1940 and 1941 to work on it with the engineering staff at General Electric, and he designed a portable betatron for inspecting dud bombs. In 1943 he joined the Manhattan Project's Los Alamos Laboratory, where he was responsible for designing and building the Water Boiler, a nuclear reactor intended to serve as a laboratory instrument. From 1953 to 1957 Kerst was technical director of the Midwestern Universities Research Association, where he worked on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donald William Kerst
Donald William Kerst (November 1, 1911 – August 19, 1993) was an American physicist who worked on advanced particle accelerator concepts ( accelerator physics) and plasma physics. He is most notable for his development of the betatron, a novel type of particle accelerator used to accelerate electrons. A graduate of the University of Wisconsin, Kerst developed the first betatron at the University of Illinois at Urbana Champaign, where it became operational on July 15, 1940. During World War II, Kerst took a leave of absence in 1940 and 1941 to work on it with the engineering staff at General Electric, and he designed a portable betatron for inspecting dud bombs. In 1943 he joined the Manhattan Project's Los Alamos Laboratory, where he was responsible for designing and building the Water Boiler, a nuclear reactor intended to serve as a laboratory instrument. From 1953 to 1957 Kerst was technical director of the Midwestern Universities Research Association, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutrino Factory
The Neutrino Factory is a proposed particle accelerator complex intended to measure in detail the properties of neutrinos, which are extremely weakly interacting fundamental particles that can travel in straight lines through normal matter for thousands of kilometres. Up until the 1990s, neutrinos were assumed to be massless, but experimental results from searches for solar neutrinos (those produced in the Sun's core) and others are inconsistent with this assumption, and thus indicate that the neutrino does have a very small mass (see Solar neutrino problem). Function The Neutrino Factory will create a fairly focused beam of neutrinos at one site on the Earth and fire it downwards, probably in two beams emitted in different directions from a racetrack shaped underground muon storage ring, until the beams resurface at other points. One example could be a complex in the UK sending beams to Japan (see Super-Kamiokande) and Italy ( LNGS). The properties of the neutrinos will be ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tihiro Ohkawa
was a Japanese physicist whose field of work was in plasma physics and fusion power. He was a pioneer in developing ways to generate electricity by nuclear fusion when he worked at General Atomics. Ohkawa died September 27, 2014 in La Jolla, California at the age of 86. Early life and career Ohkawa was born in Kanazawa on January 3, 1928. He studied physics at the University of Tokyo in 1950, and was a member of the Yoshio Nishina group for researching cosmic altitude radiation for 16 years even during the World War II. He was a researcher at CERN and at Midwestern State University before becoming a professor at the University of Tokyo. In 1960, he went to General Atomics, where he led a fusion research project and later became vice president and deputy chairman of the board. In 1994, Ohkawa left General Atomics to found TOYO Technologies. In 2004, he was co-founder of Nano Fusion Technologies with Masano Nishikawa for the development of microfluidics. He was also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclotron
A cyclotron is a type of particle accelerator invented by Ernest O. Lawrence in 1929–1930 at the University of California, Berkeley, and patented in 1932. Lawrence, Ernest O. ''Method and apparatus for the acceleration of ions'', filed: January 26, 1932, granted: February 20, 1934 A cyclotron accelerates charged particles outwards from the center of a flat cylindrical vacuum chamber along a spiral path. The particles are held to a spiral trajectory by a static magnetic field and accelerated by a rapidly varying electric field. Lawrence was awarded the 1939 Nobel Prize in Physics for this invention. The cyclotron was the first "cyclical" accelerator. The primary accelerators before the development of the cyclotron were electrostatic accelerators, such as the Cockcroft–Walton accelerator and Van de Graaff generator. In these accelerators, particles would cross an accelerating electric field only once. Thus, the energy gained by the particles was limited by the maximu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Storage Ring
A storage ring is a type of circular particle accelerator in which a continuous or pulsed particle beam may be kept circulating typically for many hours. Storage of a particular particle depends upon the mass, momentum and usually the charge of the particle to be stored. Storage rings most commonly store electrons, positrons, or protons. Storage rings are most often used to store electrons that radiate synchrotron radiation. Over 50 facilities based on electron storage rings exist and are used for a variety of studies in chemistry and biology. Storage rings can also be used to produce polarized high-energy electron beams through the Sokolov-Ternov effect. The best-known application of storage rings is their use in particle accelerators and in particle colliders, where two counter-rotating beams of stored particles are brought into collision at discrete locations. The resulting subatomic interactions are then studied in a surrounding particle detector. Examples of such facilit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synchrotron Radiation Center
The Synchrotron Radiation Center (SRC), located in Stoughton, Wisconsin and operated by the University of Wisconsin–Madison, was a national synchrotron light source research facility, operating the Aladdin storage ring. From 1968 to 1987 SRC was the home of Tantalus, the first storage ring dedicated to the production of synchrotron radiation. History The Road to SRC: 1953–1968 15 universities formed the Midwest Universities Research Association (MURA) in 1953 to promote and design a high energy proton synchrotron, to be built in the Midwest. With the intent of constructing a large accelerator, MURA purchased a suitable area of land with an underlying flat limestone base near Stoughton, Wisconsin, about from the Madison campus of the University of Wisconsin. MURA's first accelerator was a 45 MeV synchrotron, built in a concrete underground "vault", mostly for radiation protection purposes. A small electron storage ring, operating at 240 MeV, was designed by Ed Row ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mura Ring
Mura may refer to: Places * Mura (Drava), a tributary of the Drava in Austria, Hungary, Slovenia and Croatia * Mura (Angara), a tributary of the Angara in Russia * Mura, Lombardy, a ''comune'' in the Province of Brescia, Italy * Mura, Barcelona, a municipality in the Province of Barcelona, Catalonia, Spain * Mura Statistical Region, in Slovenia People * Mura (surname) * Saint Mura (c. 550–645), first abbot of the monastery at Fahan, County Donegal, Ireland * Mura, mother of Chandragupta Maurya, the founder of the Maurya Empire in ancient India * Munda people of Tripura, India * Mura people, an indigenous people in Brazil * Mura (actor), Filipino actor and comedian Slovenian football clubs * NK Mura, a defunct Slovenian football club * ND Mura 05, a defunct Slovenian football club * NŠ Mura, a Slovenian football club Other uses * MurA or UDP-N-acetylglucosamine enolpyruvyl transferase, an enzyme * Mura, administrative units of modern villages of Japan and Edo-period vill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
