Acceleration of polarized deuteron beams with RIBF cyclotrons

N. Sakamoto, N. Fukunishi, M. Kase, K. Suda, K. Sekiguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have recently performed experiments with polarized deuteron beams at the Radioactive Isotope Beam Factory (RIBF). Tensor- and vector-polarized deuterons were produced using the RIKEN polarized ion source (PIS) [1], which is an atomic-beam-type ion source equipped with an electron cyclotron resonance (ECR) ionizer, and were accelerated to 190 MeV/u, 250 MeV/u, and 300 MeV/u with a cyclotron cascade. To measure the various spin observables, the spin orientation of the deuteron beams was freely directed by using a Wien filter. The advantage of this method is that since the velocity of the deuteron is low the size of a magnet required for the spin rotation is very compact. On the other hand it is crucial to realize strict single-turn extraction for each cyclotron because the cyclotron magnetic field causes precession of the deuteron spin resulting in a deviation between its spin orientation and the beam propagation direction. This paper describes the acceleration of the polarized deuteron beams by the RIBF accelerators and the method to confirm single-turn extraction.

Original languageEnglish
Title of host publicationCYC 2016 - Proceedings of the 21st International Conference on Cyclotrons and their Applications
PublisherJoint Accelerator Conferences Website (JACoW)
Pages145-148
Number of pages4
ISBN (Electronic)9783954501670
Publication statusPublished - 2016
Event21st International Conference on Cyclotrons and their Applications, CYC 2016 - Zurich, Switzerland
Duration: 2016 Sep 112016 Sep 16

Publication series

NameCYC 2016 - Proceedings of the 21st International Conference on Cyclotrons and their Applications

Conference

Conference21st International Conference on Cyclotrons and their Applications, CYC 2016
Country/TerritorySwitzerland
CityZurich
Period16/9/1116/9/16

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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