OPPIS Upgrade for 2003 Polarized Run in RHIC(a).

Zelenski, A. ; Alessi, J. ; Briscoe, B. ; Kponou, A. ; Kokhanovski, S. ; Klenov, V. ; LoDestro, V. ; Ritter, J. ; Zubets, V.

Technical Information Center Oak Ridge Tennessee

关键词: Polarized beams;    Ion beams;    Proton beams;    Molecular ions;    Pulses;   

RP-ID  :  DE200415006599

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The polarization dilution by molecular ions which are produced in the ECR primary proton source is discussed. The molecular component can be reduced to about 5% by ECR source-operation optimization. It is further suppressed by optimization of the extraction electrode optics and by the decelerating einzel lens in the 35 keV LEBT line. As a result, the proton polarization of the accelerated beam was increased to over 80%. as measured in the 200 MeV proton-deuterium polarimeter. The OPPIS upgrade for 6 2/3 Hz repetition rate operation is also discussed.