High Intensity Positron Source at HFR: Basic Concept, Scoring and Design Optimisation

Recent applications of positron beam techniques in various research fields demand high intensity positron sources, which are required for advanced applications, particularly in material science. There are many efforts made, throughout the world, to design and set-up positron sources and beam systems with high intensity based on various principles. Such a positron source could be the basis for a series of experiments in fundamental and applied research, as well as industrial applications especially in the field of condense matter characterization at the nanometer scale. In addition, phenomena involving positrons are also important in other fields of applied science, as medicine, biology, physics, energy, etc. However, the limitations of such studies are often due to the relative lack of suitable positron sources. The outcomes of recently completed exploratory research project called ¿HIPOS¿ specify the principles of such powerful experimental facility with a very high intensity positron beam based on reactor source. Proposed concept utilizing a (n, gamma) and (gamma, pair) nuclear reactions within designed positron generator at High Flux Reactor (HFR) in Petten, is discussed in details. The HIPOS source is designed to produce intensity of slow positrons of the order of 1010 e+/s.

TUCEK Kamil;  DEBARBERIS Luigi;  HOGENBIRK A.;  ZEMAN Andrej; 

2011-12-09

ELSEVIER SCIENCE BV

JRC59942

0168-583X,   

http://www.sciencedirect.com/science/article/pii/S0168583X11009001,    https://publications.jrc.ec.europa.eu/repository/handle/JRC59942,   

10.1016/j.nimb.2011.10.003,