Title :
Gabor lens focusing of a negative ion beam
Author :
Palkovic, J.A. ; Mills, F.E. ; Schmidt, C. ; Young, D.E.
Author_Institution :
Wisconsin Univ., Madison, WI, USA
Abstract :
A Gabor lens constructed at Fermilab has been used to focus a 30 keV proton beam with good optical quality. In the present work, the author discusses the action of a Gabor lens on a beam of negative ions. A Gabor lens has been considered for matching an H- beam into a radio-frequency quadrupole (RFQ) in the redesign of the low energy section of the Fermilab linac. It is shown that it is not feasible to focus a negative ion beam with a Gabor lens due to the large magnetic fields necessary to contain the nonneutral ion plasma
Keywords :
beam handling equipment; beam handling techniques; ion beams; Fermilab linac; Gabor lens; H- beam; ion beam focusing; magnetic fields; negative ion beam; nonneutral ion plasma; optical quality; radio-frequency quadrupole; Ion beams; Lenses; Particle beams; Plasma accelerators; Plasma confinement; Plasma density; Plasma devices; Plasma properties; Plasma stability; Testing;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.73154
