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Subatomic Physics – ALBA

ALBA – African LaBr Array
The African LaBr3:Ce array (ALBA) will consists of 23 large-volume LaBr3:Ce detectors. These detectors are characterised by good energy resolution, an excellent time response and a high-efficiency for γ-ray detection. These proprieties make these crystals very suitable in experiments with high-energy γ rays and high-count rates. ALBA could be used as a stand-alone γ-ray spectrometer as well as coupled to the K600 spectrometer or to silicon-detector arrays and Clover detectors, already present at iThemba LABS, for the particle identification. This unique experimental setup would allow for new generation of studies where the γ-decay probability has been too low to be investigated with the arrays currently available worldwide.

The first six detectors of ALBA arrived at the end of 2017 and they are now being characterised in term of energy/time resolution and efficiency by using radioactive sources. A commission experiment for the full configuration of ALBA is planned for 2019.