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MINIBALL is a gamma-ray spectrometer located on the first beam line
of the HIE-ISOLDE facility at CERN.
News
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Miniball goes into LS3
Miniball goes into LS3 Detectors dismounted and sent for refurbishment After a successful experimental campaign in 2025, the Miniball clusters have been dismounted by Josh Curry (U. Liverpool), Oscar Fjeld, Jordan Reilly and Carlotta Porzio (CERN) in December 2025. Herbert Hess (GSI) and Timo Biesenbach (U. Cologne) transported them to Cologne in January 2026 for
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ISOLDE spots another pear-shaped nucleus
ISOLDE spots another pear-shaped nucleus An experiment performed at CERN’s ISOLDE facility shows that the nucleus of the isotope radium-222 is pear-shaped Most nuclei are round or the shape of a rugby ball. But nuclear-physics theories predict that certain nuclei may have a more exotic pear shape, with more mass at one end than the
About
The Miniball germanium detector array has been in operation at CERN’s ISOLDE facility since 2001. It enables a wide range of nuclear-structure studies using high-quality radioactive ion beams. Read more →