Reduction of contaminants originating from primary beam by improving the beam stoppers in GARIS-II
Sota Kimura, Daiya Kaji, Yuta Ito, Hiroari Miyatake, Kouji Morimoto,, Peter Schury, Michiharu Wada
TL;DR
This paper presents the development and evaluation of two new beam stoppers for GARIS-II, significantly improving beam separation and increasing the signal-to-noise ratio by 160 times in experiments with lead and oxygen reactions.
Contribution
Introduction of two independent beam stoppers that enhance beam separation and reduce contaminants in GARIS-II, leading to improved experimental performance.
Findings
160-fold increase in signal-to-noise ratio
Effective reduction of contaminants from primary beam
Enhanced beam separation in GARIS-II
Abstract
Two independent beam stoppers have been developed for improving the beam separation of the gas-filled recoil ion separator GARIS-II. Performance evaluation of these supplemental beam stoppers was performed by using the 208Pb (18O,3n)223Th reaction. A160-fold enhancement of the signal-to-noise ratio at the GARIS-II focal plane was observed.
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