Particle accelerators

device to propel charged particles to high speeds

300px|thumb|right|Lawrence's cyclotron, , showing the beam of accelerated ions (likely [[protons or deuterons) exiting the machine and ionizing the surrounding air causing a blue glow]]

thumb|The first synchrotron to use the "racetrack" design with straight sections, a 300 MeV electron synchrotron at University of Michigan in 1949, designed by Dick Crane A synchrotron is a particular type of cyclic particle accelerator, descended from the cyclotron, in which the accelerating particle beam travels around a fixed closed-loop path. The strength of the magnetic field which bends the particle beam into its closed path increases with time during the accelerating process, being synchronized to the increasing kinetic energy of the particles.

vacuum tube that converts electrical input power into X-rays

The Tevatron was a circular particle accelerator (active until 2011) in the United States, at the Fermi National Accelerator Laboratory (called Fermilab), east of Batavia, Illinois, and was the highest energy particle collider until the Large Hadron Collider (LHC) of the European Organization for Nuclear Research (CERN) was built near Geneva, Switzerland. The Tevatron was a synchrotron that accelerated protons and antiprotons in a circumference ring to energies of up to 1 TeV, hence its name. The Tevatron was completed in 1983 at a cost of $120 million and significant upgrade investments were

early type of cathode ray tube

thumb|High-power 140 GHz gyrotron for plasma heating in the Wendelstein 7-X fusion experiment, Germany. A gyrotron is a class of high-power linear-beam vacuum tubes that generates millimeter-wave electromagnetic waves by the cyclotron resonance of electrons in a strong magnetic field. Output frequencies range from about 20 to 527 GHz, covering wavelengths from microwave to the edge of the terahertz gap. Typical output powers range from tens of kilowatts to 1–2 megawatts. Gyrotrons can be designed for pulsed or continuous operation. The gyrotron was invented by Soviet scientists at NIRFI, based

heavy-ion collider at Brookhaven National Laboratory

Particle accelerator

thumb|Sketch of a synchrocyclotron from McMillan's patent. A synchrocyclotron is a special type of cyclotron, patented by Edwin McMillan in 1952, in which the frequency of the driving RF electric field is varied to compensate for relativistic effects as the particles' velocity begins to approach the speed of light. This is in contrast to the classical cyclotron, where this frequency is constant.

electric circuit which generates a high DC voltage from a low voltage AC or pulsing DC input

Subatomic particle accelerator cancelled in 1993 during construction in Texas

The Bevatron ( ) was a particle accelerator – specifically, a weak-focusing proton synchrotron – located at Lawrence Berkeley National Laboratory, U.S., which began operations in 1954. The antiproton was discovered there in 1955, resulting in the 1959 Nobel Prize in physics for Emilio Segrè and Owen Chamberlain. It accelerated protons into a fixed target, and was named for its ability to impart energies of billions of eV ("billions of eV synchrotron").

pulsed neutron source and a research facility

CERN's first synchrotron accelerator

particle accelerator operating at DESY from 1992 to 2007

J-PARC (Japan Proton Accelerator Research Complex) is a high intensity proton accelerator facility. It is a joint project between KEK and JAEA and is located at the Tokai campus of JAEA. J-PARC aims for the frontier in materials and life sciences, and nuclear and particle physics. J-PARC uses high intensity proton beams to create high intensity secondary beams of neutrons, hadrons, and neutrinos.

The Cosmotron was a particle accelerator, specifically a proton synchrotron, at Brookhaven National Laboratory. Its construction was approved by the U.S. Atomic Energy Commission in 1948, reaching its full energy in 1953, and continuing to run until 1966. It was dismantled in 1969.

an electron in a static and uniform magnetic field will move in a circle due to the Lorentz force

particle accelerator designed to produce intense x-ray beams

particle accelerator

ADONE (big AdA) was a high-energy (beam energy 1.5 GeV, center-of-mass energy 3 GeV) particle collider. It collided electrons with their antiparticles, positrons. It was 105 meters in circumference. It was operated from 1969 to 1993, by the National Institute of Nuclear Physics (INFN) at the Frascati National Laboratory (LNF), in Frascati, Italy.

physicist and educator

Particle accelerator at CERN

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thumb | right SuperKEKB is a particle collider located at KEK (High Energy Accelerator Research Organization) in Tsukuba, Ibaraki Prefecture, Japan. SuperKEKB collides electrons with positrons at the centre-of-momentum energy close to the mass of the Υ(4S) resonance making it a second-generation B-factory for the Belle II experiment. The accelerator is an upgrade to the KEKB accelerator, providing approximately 40 times higher luminosity, due mostly to superconducting quadrupole focusing magnets. The accelerator achieved "first turns" (first circulation of electron and positron beams) in Febru

thumb|right|The 2.5 MeV Pelletron accelerator SIRIUS at the École polytechnique A Pelletron is a type of electrostatic generator, structurally similar to a Van de Graaff generator. Pelletrons have been built in many sizes, from small units producing voltages up to 500 kilovolts (kV) and beam energies up to 1 megaelectronvolt (MeV) of kinetic energy, to the largest system, which has reached a DC voltage of over 25 megavolts and produced ion beams with energies over 900 MeV.

thumb|Superconductive heavy ion synchrotron-nuclotron present at Veksler and Baldin Laboratory of High Energy Physics in Joint Institute for Nuclear Research, Dubna Nuclotron is a superconductive synchrotron, exploited by the Joint Institute for Nuclear Research in Dubna, Russia. This particle accelerator is based on a miniature iron-shaped field superconductive magnets, and has a particle energy up to 7 GeV. It was built in 1987–1992 as a part of Dubna synchrophasotron modernisation program (the Nuclotron ring follows the outer perimeter of the superconductive booster synchrotron ring). Five

electron–positron collider

thumb|View from above the Synchrophasotron magnet yoke The Synchrophasotron was a synchrotron-based particle accelerator for protons at the Joint Institute for Nuclear Research in Dubna that was operational from 1957 to 2003. It was designed and constructed under supervision of Vladimir Veksler, who had invented the synchrotron independently from Edwin McMillan.

physics research institute in China

thumb|right|Overview of the hall of the e + e- collider DAFNE at the Frascati National Laboratory of INFN DAFNE or DAΦNE (Double Annular Φ Factory for Nice Experiments), is an electron-positron collider at the INFN Frascati National Laboratory in Frascati, Italy. It consists of 2 accelerator rings, both approximately 100 meters in length. Since 1999 it has been colliding electrons and positrons at a center of mass energy of 1.02 GeV to create phi mesons (φ). 85% of these decay into kaons (K), whose physics is the subject of most of the experiments at DAFNE.

Indian electron accelerator

former CERN infrastructure

particle accelerator housed in the Louvre museum in Paris, France

Type of particle beam