No abstract

A simplified scheme for the provision of antiprotons at 100 MeV/c based on fast extraction is described. The scheme uses the existing p production target area and the modified Antiproton Collector Ring in their current location. The physics programme is largely based on capturing and storing antiprotons in Penning traps for the production and spectroscopy of antihydrogen. The machine modifications necessary to deliver batches of 1 u 10 7 p /min at 100 MeV/c are described. Details of the machine layout and the experimental area in the existing AAC Hall are given.

A simplified scheme for the provision of antiprotons at 100 MeV/c based on fast extraction is described. The scheme uses the existing p production target area and the modified Antiproton Collector Ring in their current location. The physics programme is largely based on capturing and storing antiprotons in Penning traps for the production and spectroscopy of antihydrogen. The machine modifications necessary to deliver batches of 1 u 10 7 p /min at 100 MeV/c are described. Details of the machine layout and the experimental area in the existing AAC Hall are given.

No abstract

When ideas for the SPS proton-antiproton collider firmed up, it was realized that the abundant production of antiprotons offered a further unique possibility: deceleration and cooling would provide low-energy antiproton beams of unprecedented intensity and purity. A proposal was made to add a small facility for experiments with cooled antiproton beams in the energy range of 5 to 1200 MeV. This was to become the Low-Energy Antiproton Ring, LEAR. Originally thought to only exist parasitically on the antiproton production for the SPS Collider, the project took on an ever-growing importance and, owing to its great successes, has even outlived the SPS Collider. It continues to this day in the simplified form of the Antiproton Decelerator, AD. Our paper describes the accelerator aspects of this venture.