| Paper |
Title |
Page |
| MOBP03 |
Upgrade of BNL Accelerator Facility
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29 |
| |
- A. G. Ruggiero
BNL, Upton, Long Island, New York
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A number of upgrades are planned for the Brookhaven accelerator facility that is primarily made of RHIC and its injector, the AGS. The RHIC luminosity and proton polarization are to evolve towards the Enhanced Design parameters by 2008. A new Electron Beam Ion Source is under development, and commissioning is expected in 2009. The aim of the RHIC II upgrade is to increase the heavy ion luminosity by an order of magnitude, through electron cooling in store. With the addition of an electron ring, the high-luminosity electron-ion collider proposal eRHIC can be realized. Studies have also been done for a new injector to the AGS replacing the present Booster for an upgrade of the beam average power to 1 MW at 28 GeV. The new injector to match the AGS repetition rate can be either a 1.5-GeV SCL or a FFAG accelerator. With the upgrade of the injector complex, neutrino superbeams could be produced.
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| THAY03 |
Challenges for hadron (and leptons) nonscaling FFAGs
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303 |
| |
- A. G. Ruggiero
BNL, Upton, Long Island, New York
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The concept of Fixed-Field Alternating-Gradient (FFAG) accelerators was introduced about a half century ago. Few prototypes were built soon after and successfully placed in operation. Nevertheless, because of the perceived complexity of the early model magnets and design, the concept was soon abandoned in favor of cyclotrons, synchrotrons and linacs. It was subsequently occasionally revived for possible application as spallation neutron sources; but it was only recently that, because of the need of fast acceleration of muons, that FFAGs were re-considered and studied with more attention. Two prototypes were eventually built and operated at KEK for the acceleration of Protons. The interest indeed soon switched more steadily toward acceleration of protons (and electrons) as application for high-power proton drivers and medical accelerators. The paper describes the design procedure of a proton FFAG accelerator that employs a Non-Scaling lattice and exposes the main inherent issues, namely: the crossing of multiple resonances, space-charge at injection, and the fast acceleration rate that may impose limitations on the RF cavity hardware.
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| THCX02 |
Cost Comparison of Linear and Circular Accelerators
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356 |
| |
- A. G. Ruggiero
BNL, Upton, Long Island, New York
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A simple comparison of construction cost between a Linear and a Circular Accelerator is made. Two simplified models are proposed and studied. The comparison is made with the two major magnet and RF cavity components. An approximated criterion is found according to which the Circular Accelerator is indeed the more economical of the two provided that the beam circulates a minimum number of turns.
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