Review of Polarized Ion Sources

Abstract

Recent progress in polarized ion sources development is reviewed. New techniques for production of polarized H[Formula: see text] ion (proton), D[Formula: see text] (D[Formula: see text]) and 3He[Formula: see text] ion beams will be discussed. A novel polarization technique was successfully implemented for the upgrade of the RHIC polarized H[Formula: see text] ion source to higher intensity and polarization. In this technique, a proton beam inside the high magnetic field solenoid is produced by ionization of the atomic hydrogen beam (from an external source) in the He-gas ionizer cell. Polarized electron capture from the optically-pumped Rb vapor further produces proton polarization (Optically Pumped Polarized Ion Source technique). The upgraded source reliably delivered beam for the 2013 polarized run in RHIC at [Formula: see text] = 510 GeV. This was a major factor contributing to RHIC polarization increase to over 60 % for colliding beams. Feasibility studies of a new polarization technique for polarized 3He[Formula: see text] source based on BNL Electron Beam Ion Source is also discussed.