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We developed a method to make GEM foils with a spherical geometry. Tests of this procedure and with the resulting spherical GEMS are presented. Together with a spherical drift electrode, a spherical conversion gap can be formed. This eliminates the parallax error for detection of X-rays, neutrons or UV photons when a gaseous converter is used. This parallax error limits the spatial resolution at wide...
We developed a method to make GEM foils with a spherical geometry. Tests of this procedure and with the resulting spherical GEMS are presented. Together with a spherical drift electrode, a spherical conversion gap can be formed. This would eliminate the parallax error for detection of x-rays, neutrons or uv photons when a gaseous converter is used. This parallax error limits the spatial resolution...
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