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 magnets. Specifications: Particle Energy 1.0MeV Pulsewidth Continuous Wave Beam Current (max) 30 microamps Beam Current (nom.) 10 microamps Beam Diameter 2mm Scan Area 16cm2 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], www.aeroflex.com/rad
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