The GALATEA Test-Facility for High Purity Germanium Detectors
  GALATEA is a test facility designed to investigate bulk and surface effects in high purity germanium detectors. A vacuum tank houses an infrared screened volume with a cooled detector inside. A system of three stages allows an almost complete scan of the detector. The main feature of GALATEA is that there is no material between source and detector. This allows the usage of alpha and beta sources as well as of a laser beam to study surface effects. A 19-fold segmented true-coaxial germanium detector was used for commissioning. 
I. Abt, A. Caldwell, B. Doenmez, L. Garbini, S. Irlbeck, B.   Majorovits, M. Palermo, O. Schulz, H. Seitz, F. Stelzer
physics.ins-det