Title :
Status and performance of the IUCF 270 keV electron cooling system
Author :
Ellison, Timothy J P ; Friesel, Dennis L. ; Brown, Robert J.
Author_Institution :
Dept. of Phys., Indiana Univ., Bloomington, IN, USA
Abstract :
The IUCF (Indiana University Cyclotron Facility) 270-keV electron cooling system has demonstrated collection efficiencies of 100% (+0/-2 p.p.m.) operating with a 2-A electron beam (0.4 A/cm2). In addition, a very complete set of longitudinal drag rate measurements have been completed. These measurements span rest frame electron-proton velocity differences of over three orders of magnitude and include the region where the average longitudinal electron-proton velocity difference is less than the electron beam longitudinal velocity spread (a region which has not previously been measured). No obvious Schottky signal suppression (evidence of beam crystallization) has been observed for low-intensity cooled proton beams, though many interesting collective phenomena have been observed for high-intensity cooled proton beams
Keywords :
beam handling equipment; beam handling techniques; cyclotrons; electron accelerators; IUCF; Indiana University Cyclotron Facility; Schottky signal suppression; beam crystallization; collection efficiencies; collective phenomena; electron beam; electron cooling system; high-intensity cooled proton beams; longitudinal drag rate measurements; low-intensity cooled proton beams; rest frame electron-proton velocity differences; Cooling; Drag; Electron beams; Energy measurement; Particle beams; Power transformer insulation; Protons; Solenoids; Toroidal magnetic fields; Velocity measurement;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.73205
