Agata detector technology: recent progress and future developments

Abstract $$\gamma $$ γ -ray tracking is based on a new generation of position sensitive high-purity germanium (HPGe) detectors. A novel type cluster detector was successfully developed and assembled for the high-resolution spectrometer Advanced Gamma Tracking Array AGATA. The core part consists three encapsulated, 36-fold segmented HPGe detectors which are operated in common cryostat. Ge crystal hermetically sealed inside an aluminium can. All energy channels provide best resolution segment signals extended range well above 50 MeV. low cross-talk level determined its preamplifier circuitry. Related corrections essential highest improved dependent pulse shape information. Recently encapsulation technology put into operation renewable metal elastic seal. developments concerned with technologies production p+ n+ contacts, segmentation passivation encapsulated crystals. Semiconductor processing research specifically aimed to develop stable, thin easy contact. process, pulsed laser melting PLM, employed produce very contacts preserving purity. were using photolithographic process then intrinsic surface between passivated assure electrical insulation them. small prototype segments made these techniques tested.