Negative hydrogen ion source research and beam parameters for accelerators

Zolkin, Timofey V.

Fermi National Accelerator Laboratory

关键词: Ion Sources;    Magnetrons;    43 Particle Accelerators;    Charge Exchange;    Hydrogen Ions;   

DOI  :  10.2172/897026
RP-ID  :  FERMILAB-TM-2360-AD
RP-ID  :  AC02-07CH11359
RP-ID  :  897026

美国|英语

来源: UNT Digital Library

【 摘 要 】

H{sup -} beams are useful for multi-turn charge-exchange stripping injection into circular accelerators. Studies on a modified ion source for this purpose are presented. This paper includes some theory about a H{sup -} magnetron discharge, ion-electron emission, emittance and problems linked with emittance measurement and calculations. Investigated parameters of the emittance probe for optimal performance give a screen voltage of 150 V and a probe step of about 5 mil. Normalized 90% emittance obtained for this H{sup -} source is 0.22 {pi} mm-mr, for an extraction voltage of 18 kV at a beam energy of 30 keV and a beam current of 11 mA.