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The Antiproton Decelerator (AD) is a storage ring at the CERN laboratory near Geneva. [1] It was built from the Antiproton Collector (AC) to be a successor to the Low Energy Antiproton Ring (LEAR) and started operation in the year 2000. Antiprotons are created by impinging a proton beam from the Proton Synchrotron on a iridium target. The AD ...
Simon van der Meer in the Antiproton Accumulator Control Room, 1984. From the beginning of the project, the potential of physics with low-energy antiprotons was recognized. A Low Energy Antiproton Ring (LEAR) was built and received antiprotons from the AA from 1983 on, for deceleration to as low as 100 MeV/c. [8] The first artificially created antimatter, in the form of anti-Hydrogen, was ...
It is situated inside the Antiproton Decelerator (AD) complex at CERN, Geneva. [1] [2] It is designed to further decelerate the antiproton beam coming from the Antiproton decelerator to an energy of 0.1 MeV for more precise measurements. [3] [4] The first beam circulated ELENA on 18 November 2016. [5]
After the Antiproton Accumulator (AA) had been operational since 1980, the update program ACOL (Antiproton COLlector) was proposed in 1983. [1] The update comprised improvement work on the antiproton source, the construction of the Antiproton Collector (AC), as well as reconstructions of the injection and ejection systems of the Antiproton Accumulator (AA) and its stochastic cooling system.
Stochastic cooling is a form of particle beam cooling. [1] It is used in some particle accelerators and storage rings to control the emittance of the particle beams in the machine. This process uses the electrical signals that the individual charged particles generate in a feedback loop to reduce the tendency of individual particles to move ...
AEgIS (Antimatter Experiment: gravity, Interferometry, Spectroscopy), AD-6, is an experiment at the Antiproton Decelerator facility at CERN.Its primary goal is to measure directly the effect of Earth's gravitational field on antihydrogen atoms with significant precision. [1]
The Super Proton–Antiproton Synchrotron (or Sp p S, also known as the Proton–Antiproton Collider) was a particle accelerator that operated at CERN from 1981 to 1991. To operate as a proton - antiproton collider the Super Proton Synchrotron (SPS) underwent substantial modifications, altering it from a one beam synchrotron to a two-beam collider.
Low Energy Antiproton Ring experimental area. The CPLEAR experiment used the antiproton beam of the LEAR facility – Low-Energy Antiproton Ring which operated at CERN from 1982 to 1996 – to produce neutral kaons through proton-antiproton annihilation in order to study CP, T and CPT violation in the neutral kaon system.