Skip to Main content Skip to Navigation
Journal articles

Global Trigger and Readout System for the AGATA Experiment

Abstract : AGATA is a 4-pi array of high purity Ge detectors for in-beam gamma-ray spectroscopy based on the novel concepts of pulse shape analysis (PSA) and gamma-ray tracking. Tracking and PSA require the concurrent digitization—at a sampling rate of 100 Msamples/s—of preamplifier signals of the 36-fold segmented Ge crystals composing the array. Locally digitized data are optically transferred to remote pre-processing nodes for pulse energy computation. The design of the front-end readout and level-1 (L1) trigger in AGATA follows a synchronous pipeline model: the detector data are stored in pipeline buffers at the global AGATA frequency, waiting the global L1 decision. A global timing system provides a reference clock and time tag to the digitizers and the pre-processing units by means of a tree of optically connected timing units. Pre-processing nodes are integrated in AdvancedTCA-based carrier cards with full mesh connectivity in the backplane and read-out through pci-express based optical links. The front-end data readout and its integration in the global trigger and synchronization system will be described
Document type :
Journal articles
Complete list of metadatas
Contributor : Yvette Heyd <>
Submitted on : Monday, March 10, 2008 - 10:21:45 AM
Last modification on : Wednesday, September 16, 2020 - 4:17:25 PM




M. Bellato, L. Berti, D. Bortolato, P.J. Coleman-Smith, P. Edelbruck, et al.. Global Trigger and Readout System for the AGATA Experiment. IEEE Transactions on Nuclear Science, Institute of Electrical and Electronics Engineers, 2008, 55, pp.91-98. ⟨10.1109/TNS.2007.910034⟩. ⟨in2p3-00261844⟩



Record views