Engineering Projects & Partnerships
GRETINA
Overview
Gretina Gamma Particle device
[Science Beat] GRETINA is a new type of gamma-ray detector to study the structure and properties of atomic nuclei. It is built from large crystals of hyper-pure germanium and will be the first detector to use the recently developed concept of gamma-ray energy tracking. GRETINA consists of 28 highly segmented coaxial germanium crystals. Each crystal is segmented into 36 electrically isolated elements and four crystals are combined in a single cryostat to form a quad-crystal module. There will be 7 modules in total. The modules are designed to fit a close-packed spherical geometry that will cover one quarter of a sphere. GRETINA is the first stage of the full Gamma-Ray Energy Tracking Array (GRETA).
