Frankfurt 2014 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
HK: Fachverband Physik der Hadronen und Kerne
HK 44: Instrumentierung
HK 44.1: Talk
Thursday, March 20, 2014, 14:00–14:15, HZ 9
A high resolution germanium detector array for hypernuclear studies at PANDA — Sebastian Bleser1, Jürgen Gerl2, Felicce Iazzi3, Jasmina Kojouharova2, Ivan Kojouharov2, Josef Pochodzalla4, Kai Rittgen4, Cihan Sahin4, Alicia Sanchez Lorente1, and •Marcell Steinen1 — 1Helmholtz-Institut Mainz — 2GSI Darmstadt — 3Politecnico and INFN, Torino — 4Institute for nuclear physics, JGU Mainz
The PANDA experiment, planned at the FAIR facility in Darmstadt, aims at the high resolution γ-spectroscopy of double Λ hypernuclei. For this purpose a devoted detector setup is required, consisting of a primary nuclear target, an active secondary target and a germanium detector array for the γ-spectroscopy. Due to the limited space within the PANDA detector a compact design is required. In particular the conventional LN2 cooling system must be replaced by an electro mechanical device and a new arrangement of the crystals is needed.
This presentation shows the progress in the development of the germanium detectors. First results of in-beam measurements at COSY with a new electro mechanically cooled single crystal prototype are presented. Digital pulse shape analysis is used to disentangle pile up events due to the high event rate. This analysis technique also allows to recover the high original energy resolution in case of neutron damage. Finally the status of the new triple crystal detector prototype is given.