Optimization of radiochromic film stacks to diagnose high-flux laser-accelerated proton beams

C B Curry; C A S Dunning; M Gauthier; H-G J Chou; F Fiuza; G D Glenn; Y Y Tsui; M Bazalova-Carter; S H Glenzer

doi:10.1063/5.0020568

Optimization of radiochromic film stacks to diagnose high-flux laser-accelerated proton beams

Rev Sci Instrum. 2020 Sep 1;91(9):093303. doi: 10.1063/5.0020568.

Authors

C B Curry¹, C A S Dunning², M Gauthier¹, H-G J Chou¹, F Fiuza¹, G D Glenn¹, Y Y Tsui³, M Bazalova-Carter², S H Glenzer¹

Affiliations

¹ High Energy Density Science Division, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
² Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia V8P 5C2, Canada.
³ Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada.

PMID: 33003776
DOI: 10.1063/5.0020568

Abstract

Here, we extend flatbed scanner calibrations of GafChromic EBT3, MD-V3, and HD-V2 radiochromic films using high-precision x-ray irradiation and monoenergetic proton bombardment. By computing a visibility parameter based on fractional errors, optimal dose ranges and transitions between film types are identified. The visibility analysis is used to design an ideal radiochromic film stack for the proton energy spectrum expected from the interaction of a petawatt laser with a cryogenic hydrogen jet target.