High-Intensity Polarized H- Ion Source for the RHIC SPIN Physics

被引：3
|
作者：
Zelenski, A. [1 ]
Atoian, G. [1 ]
Raparia, D. [1 ]
Ritter, J. [1 ]
Kolmogorov, A. [2 ]
Davydenko, V. [2 ]
机构：
[1] Brookhaven Natl Lab, Upton, NY 11973 USA
[2] BINP Novosibirsk, Novosibirsk, Russia
来源：
FIFTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2016) | 2017年 / 1869卷
关键词：
D O I：
10.1063/1.4995735
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A novel polarization technique had been successfully implemented for the RHIC polarized H-ion source upgrade 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 external source) in the He-gas ionizer cell. Further proton polarization is produced in the process of polarized electron capture from the optically-pumped Rb vapour. The use of high-brightness primary beam and large cross-sections of charge-exchange cross-sections resulted in production of high intensity H-ion beam of 85% polarization. High beam brightness and polarization resulted in 75% polarization at 23 GeV out of AGS and 60-65% beam polarization at 100-250 GeV colliding beams in RHIC. The status of un-polarized magnetron type (Cs-vapour loaded) BNL source is also discussed.
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页数：8
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