Advances in BNL's Polarized Ion Source Development

Advances in BNL's Polarized Ion Source Development
Author:
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Release: 1988
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Polarized protons have been accelerated in the AGS to 22/yield/ GeV. The polarized source presently used produces 30-40 .mu. A of /rvec char/H− at 75-80% polarization, in 500 .mu.s pulses, 0.5 Hz. This is three orders of magnitude lower in intensity than normal H− operation, and higher intensities are desired. There is a program in the AGS department to develop a higher intensity source. This is a ground state atomic beam source with an atomic beam cooled to 6 K, spin selection and focusing via a superconducting solenoid (shown) or a sextupole system, and an ionizer for /rvec char/H− production based on the charge exchange of /rvec char/H° with D−. Work is in progress on all three components, and will be described in this paper. 6 refs., 7 figs.

Polarized Beams And Polarized Gas Targets

Polarized Beams And Polarized Gas Targets
Author: Hans Paetz Gen Schieck
Publisher: World Scientific
Total Pages: 478
Release: 1996
Genre: Ion sources
ISBN: 9814531367

"The International Workshop on Polarized Beams and Polarized Gas Targets was held in Cologne, Germany from June 6 to 9, 1995 as the last in a series held at 2-3 years intervals. It was attended by about 110 scientists; there were 47 invited and contributed talks, 5 round-table discussions and 17 poster contributions, all of which will appear as a written contribution in the Proceedings. The main subjects were Optically-Pumped Polarized Targets, Polarized Electron Sources, Atomic-Beam Polarized-Ion Sources, Optically-Pumped Polarized Ion Sources, Targets and Storage Rings. Significant progress and latest developments in this field were covered as well as future developments both from the technical, but also from the physics aspects."--Publisher's website.

Proceedings of the Ninth International Workshop Polarized Sources and Targets

Proceedings of the Ninth International Workshop Polarized Sources and Targets
Author: Vladimir P. Derenchuk
Publisher: World Scientific
Total Pages: 404
Release: 2002
Genre: Science
ISBN: 9789810249175

This book is an up-to-date survey of the science and technology of creating polarized beams and polarized targets. The papers in this collection describe state-of-the-art sources of polarized electrons, ions, atoms, neutrons, and radioactive isotopes, discuss new polarized solid and gas target techniques, present recent advances in polarimetry, and review the use of polarized gas in medical imaging.

Highly Polarized Ion Sources for Electron Ion Colliders (EIC).

Highly Polarized Ion Sources for Electron Ion Colliders (EIC).
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Release: 2010
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The operation of the RHIC facility at BNL and the Electron Ion Colliders (EIC) under development at Jefferson Laboratory and BNL need high brightness ion beams with the highest polarization. Charge exchange injection into a storage ring or synchrotron and Siberian snakes have the potential to handle the needed polarized beam currents, but first the ion sources must create beams with the highest possible polarization to maximize collider productivity, which is proportional to a high power of the polarization. We are developing one universal H-/D- ion source design which will synthesize the most advanced developments in the field of polarized ion sources to provide high current, high brightness, ion beams with greater than 90% polarization, good lifetime, high reliability, and good power efficiency. The new source will be an advanced version of an atomic beam polarized ion source (ABPIS) with resonant charge exchange ionization by negative ions. An integrated ABPIS design will be prepared based on new materials and an optimized magnetic focusing system. Polarized atomic and ion beam formation, extraction, and transport for the new source will be computer simulated.

Polarized Sources And Targets - Proceedings Of The Eleventh International Workshop

Polarized Sources And Targets - Proceedings Of The Eleventh International Workshop
Author: Akihiro Yoshimi
Publisher: World Scientific
Total Pages: 269
Release: 2007-04-26
Genre: Science
ISBN: 9814475335

Polarized beams and targets have been irreplaceable tools in nuclear and particle physics experiments for a long time and have provided us rich information on the role played by spin-degrees of freedom in the sub-nuclear world. In addition, techniques to obtain large nuclear polarization have recently been applied to new fields such as materials and medical sciences.The scope of these proceedings covers recent progress of state-of-the-art techniques in spin polarization, the cryogenic method, the atomic beam method, the optical pumping method and the nuclear reaction method.