A compact 6 MeV pulsed electron accelerator

Journal Article · Fri Apr 01 04:00:00 EST 1983 · IEEE Trans. Nucl. Sci.; (United States)

DOI:https://doi.org/10.1109/TNS.1983.4332548· OSTI ID:5481073

Hutcheon, R M; Funk, L W; Gillies, B A; Hodge, S B; Metivier, P J; Schriber, S O

A compact 6 MeV electron accelerator has been built and tested. The unit uses an axially coupled S-band standing wave structure driven by a magnetron source that delivers a 2 MW peak power, 4 ..mu..s pulse at 300 pps. The structure (including gun and high voltage feedthrough) is 12 cm diameter and 90 cm long. The gun is a novel telefocus design. The electron source is a 5.5 mm diameter loop of carburized thoriated tungsten wire in an electrode-focus coil geometry that produces a 40 keV input beam of less than or equal to 30 ..pi.. mm mrad emittance at 25 mrad convergence halfangle. The gun is rugged, insensitive to mechanical shock, and requires only 7 watts of filament power to achieve 400 mA emission under operating pressures. The whole accelerator-gun package can be baked at 350/sup 0/C, although a base pressure of 3 x 10/sup -7/ Pa is achieved with 24 hours of bakeout at only 150/sup 0/C. At an output current of 100 mA (peak) in the pulse, the beam produces dose rates of more than 300 RMM/sup +/ on axis when using a 4 mm copper bremsstrahlung target. This roughly translates into a clinical flattened dose rate of 200 RMM over a 35 x 35 cm field. The accelerator package is straightforward to manufacture and could easily be reduced in length for specific applications.

• Research Organization: Accelerator Physics Branch, Atomic Energy of Canada Ltd. Research Co, Chalk River Nuclear Lab., Chalk River, Ontario KOJ IJO
• OSTI ID: 5481073
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. 30:2; ISSN IETNA
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430100* -- Particle Accelerators-- Design
Development
& Operation
ACCELERATORS
BEAMS
DESIGN
ELECTRON BEAMS
ELECTRON GUNS
ELECTRON TUBES
ELECTRONIC EQUIPMENT
ELEMENTS
ENERGY RANGE
EQUIPMENT
FUNCTION GENERATORS
LEPTON BEAMS
MAGNETRONS
METALS
MEV RANGE
MEV RANGE 01-10
MICROWAVE EQUIPMENT
MICROWAVE TUBES
PARTICLE BEAMS
PULSE GENERATORS
TARGETS
TESTING
TRANSITION ELEMENTS
TUNGSTEN