Pelletron overview 2015-06-12 - Aeroflex Microelectronic Solutions

June 12th, 2015
1MeV Pelletron Electron-Beam Source
Radiation sources at Cobham RAD Solutions now include a 1.0-MeV Pelletron fabricated by
National Electrostatics Corporation (NEC) of Middleton, WI. This accelerator is currently
configured with drift tube and a large test chamber, along with appropriate beam control
Particle Energy
Continuous Wave
Beam Current (max) 30 microamps
Beam Current (nom.) 10 microamps
Beam Diameter
Scan Area
Direct illumination of a large area is accomplished by scanning the electron beam. As
shown in the figure below, we have demonstrated uniform (± 5%) irradiation over an area of
approximately 4 cm2. In its current configuration, the irradiated area can be increased by as
much as 4X without significant rework of the beam scan apparatus. Beam energies can be
presently controlled to within 10%, primarily due to the voltage ripple on the charge injection
source on the Pelletron. The beam current is stable to within a few percent at currents up to
10 microamps.
Contour map of electron fluence for 120-second exposure, beam current approximately 1 µA.
Cobham RAD Solutions, 5030 Centennial Blvd, Colorado Springs, CO 80906
Phone:719 531-0800 email:[email protected],