About

The Miniball γ-ray spectrometer

The Miniball germanium detector array has been in operation at CERN’s ISOLDE facility since 2001. It is designed to take advantage of the high-quality radioactive ion beams produced at ISOLDE and accelerated by the REX and HIE-ISOLDE linear accelerators.

For over two decades, Miniball has enabled a wide range of nuclear physics experiments, including Coulomb excitation and transfer reactions, providing valuable insights into the structure of exotic nuclei. Its combination of high-purity germanium detectors and particle detection systems allows precise γ-ray spectroscopy and makes it a versatile and powerful tool for nuclear-structure studies.

Today, Miniball remains a key instrument at ISOLDE and continues to contribute to research both at CERN and at other international facilities.

Publications and theses resulting from Miniball experiments can be found on the Publications and Theses pages.