The Intense Slow Positron Source concept: A theoretical perspective on a proposed INEL Facility
2008
An analysis has been performed of the INEL Intense Slow Positron Source (ISPS) concept. The results of the theoretical study are encouraging. A full‐scale device with a monoenergetic 5 keV positron beam of ≥1012 e+/s on a ≤0.03‐cm‐diameter target appears feasible and can be obtained within the existing infrastructure of INEL reactor facilities. A 30.0‐cm‐diameter, large area source dish, moderated at first with thin crystalline W films and later by solid Ne, is proposed as the initial device in order to explore problems with a facility scale system. A demonstration scale beam at ≥1010 slow e+/s is proposed using a 58Co source plated on a 6‐cm‐diameter source dish insert, placed in a 30‐cm adaptor.
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