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A proton beam will be provided by the existing GSI facility and will be further accelerated by FAIR's SIS100 ring accelerator up to 30 GeV. By the beam hitting the antiproton production target, antiprotons with a momentum of around 3 GeV/c will be produced and can be collected and pre-cooled in the Collector Ring (CR). [4]
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.
Antiproton set-up with work group: Emilio Segre, Clyde Wiegand, Edward J. Lofgren, Owen Chamberlain, Thomas Ypsilantis, 1955 In order to create antiprotons (mass ~938 MeV / c 2 ) in collisions with nucleons in a stationary target while conserving both energy and momentum, a proton beam energy of approximately 6.2 GeV is required.
The antiproton was first experimentally confirmed in 1955 at the Bevatron particle accelerator by University of California, Berkeley physicists Emilio Segrè and Owen Chamberlain, for which they were awarded the 1959 Nobel Prize in Physics. In terms of valence quarks, an antiproton consists of two up antiquarks and one down antiquark (u u d
Antiprotonic helium is a three-body atom composed of an antiproton and an electron orbiting around a helium nucleus. It is thus made partly of matter, and partly of antimatter. The atom is electrically neutral, since an electron and an antiproton each have a charge of −1 e, whereas a helium nucleus has a charge of +2 e. It has the longest ...
Atomic Spectroscopy and Collisions Using Slow Antiprotons (ASACUSA), AD-3, is an experiment at the Antiproton Decelerator (AD) at CERN.The experiment was proposed in 1997, started collecting data in 2002 by using the antiprotons beams from the AD, and will continue in future under the AD and ELENA decelerator facility.
When SPS started to operate as a proton–antiproton collider — the Sp p S — the PS had the double task of producing an intense 26 GeV/c proton beam for generating antiprotons at 3.5 GeV/c to be stored in the Antiproton Accumulator (AA), and then accelerating the antiprotons to 26 GeV/c for transfer to the SPS.
First elements of the PUMA experiment installed in the AD facility at CERN. The PUMA (antiProton Unstable Matter Annihilation) AD-9 experiment, at the Antiproton decelerator (AD) facility at CERN, Geneva, aims to look into the quantum interactions and annihilation processes between the antiprotons and the exotic slow-moving nuclei.