An optimization study for the RHIC polarized jet target

✍ Scribed by T. Wise; M.A. Chapman; W. Haeberli; H. Kolster; P.A. Quin

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 572 KB
• Volume: 556
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2005.09.042

✦ Synopsis

A study to determine the optimum magnet system for a polarized atomic hydrogen jet target is described. The design uses an atomic beam source with Ne-Fe-B permanent sextupole magnets to focus the beam and high frequency hyperfine transitions to produce nuclear polarization. A simulation model was developed and a new optimization technique was applied to the model. The study resulted in a magnet system predicted to generate an intensity of 9 Â 10 16 atoms=s and a record polarized jet-target thickness of 9:5 Â 10 11 atoms=cm 2 . The source design was subsequently used for construction of the RHIC polarized hydrogen jet target. The design of a polarimeter to determine the atomic polarization of the jet is also described.