High-intensity, high-brightness polarized and unpolarized beam production in charge-exchange collisions [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 2011.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Additional Creators:
- Brookhaven National Laboratory
United States. Department of Energy
United States. Department of Energy. Office of Scientific and Technical Information
- Basic limitations on the high-intensity H⁻ ion beam production were experimentally studied in charge-exchange collisions of the neutral atomic hydrogen beam in the Na-vapour jet ionizer cell. These studies are the part of the polarized source upgrade (to 10 mA peak current and 85% polarization) project for RHIC. In the source the atomic hydrogen beam of a 5-10 keV energy and total (equivalent) current up to 5 A is produced by neutralization of proton beam in pulsed hydrogen gas target. Formation of the proton beam (from the surface of the plasma emitter with a low transverse ion temperature ≈0.2 eV) is produced by four-electrode spherical multi-aperture ion-optical system with geometrical focusing. The hydrogen atomic beam intensity up to 1.0 A/cm² (equivalent) was obtained in the Na-jet ionizer aperture of a 2.0 cm diameter. At the first stage of the experiment H-beam with 36 mA current, 5 keV energy and ≈1.0 cm · mrad normalized emittance was obtained using the flat grids and magnetic focusing.
- Published through SciTech Connect.
2011 Particle Accelerator Conference (PAC'11); New York, NY; 20110328 through 20110401.
Zelenski, A.; Ritter, J.; Ivanov, A.; Atoian, G.; Zubets, V.; Steski, D.; Davydenko, V.; Kolmogorov, A.
- Funding Information:
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