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Measurements of the divergence of a 10-MA relativistic electron beam transported in a gas cell

Published online by Cambridge University Press:  09 March 2009

V. J. Harper-Slaboszewicz  and
W. E. Fowler
V. J. Harper-Slaboszewicz
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185
W. E. Fowler
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185
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Abstract

The increase in time-integrated divergence of a 1.7-MeV, 10-MA relativistic electron beam due to transport over 10 cm in a gas cell filled with 1 and 6 Torr of nitrogen was measured. The divergence was characterized by a multiple-pinhole beam sampling technique involving an aperture plate, an expansion region, and an attenuator plate followed by nylon radiochromic film. The divergence is determined by a fit of the measured deposition profile to response functions calculated using Monte Carlo coupled electronphoton transport codes. The initial value of 6.9° after the entrance foil is observed to increase to 12°. The errors in the measurement are quantified with Monte Carlo techniques. The response function fit gives a significantly better estimate of the divergence than a Gaussian fit.

Type
Research Article
Information
Laser and Particle Beams , Volume 9 , Issue 3 , September 1991 , pp. 749 - 758
Copyright
Copyright © Cambridge University Press 1991

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References

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