Generation of a rectangular beam distribution for irradiation of the accelerator production of tritium target

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6878618

Blind, B

A scheme has been developed to produce a well-confined rectangular beam-intensity distribution of greatly enhanced uniformity from initially-peaked intensity distributions such as Gaussian or parabolic distributions without beam scraping. This scheme employs a system of linear and nonlinear transport-line elements. The linear elements prepare the beam for the nonlinear focusing and govern the beam size at the target. Uniformity is achieved with octupoles, and beam confinement is assured with duodecapoles. The scheme was applied to the target focus for the Accelerator Production of Tritium (APT) system. An initially Gaussian-distributed beam of 1.6-GeV protons was shaped into a rectangular 4 m by 2 m beam spot of acceptably uniform intensity at the tritium-production target. The scheme eliminates the need for sweeping the beam in a raster pattern to produce uniform target illumination. Details of the scheme are discussed.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6878618
• Report Number(s): LA-UR-90-2759; CONF-9009200--6; ON: DE90016504
• Country of Publication: United States
• Language: English

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ACCELERATORS
BEAM LUMINOSITY
BEAM PROFILES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CONFIGURATION
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NUCLEI
ODD-EVEN NUCLEI
PRODUCTION
RADIOISOTOPES
RECTANGULAR CONFIGURATION
TARGETS
TRITIUM
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