Global Level Processing Working Group • AGATA • General layout of data processing • Tasks of the WG • Organization • Schedule Dino Bazzacco, GLP meeting, May 15-16, 2003, LNL AGATA The Advanced Gamma Ray Tracking Array • Next “big” European 4p g-array for NS studies at – Radioactive beam facilities: GSI, GANIL, SPES, … EURISOL – High intensity stable beam facilities: LNL, Jyväskylä, ... • Based on years of worldwide R&D on g-ray tracking • Collaboration of 10 EU countries – Funded by national agencies and by EU • Constructed in phases – Demonstrator 2003 · · · 2007 – Phases of Full Array · · · The AGATA Collaboration • Bulgaria: Univ. Sofia • Denmark: NBI Copenhagen • Finland: Univ. Jyväskylä • France: GANIL Caen, IPN Lyon, CSNSM Orsay, IPN Orsay, CEA-DSM-DAPNIA Saclay, IReS Strasbourg • Germany: HMI Berlin, Univ. Bonn, GSI Darmstadt, TU Darmstadt, FZ Jülich, Univ. Köln, LMU München, TU München • Italy: INFN/Univ. Padova, Milano, LNL, Firenze, Camerino, Napoli, Genova • Poland: NINP & IFJ Krakow, SINS Swierk, HIL & IEP Warsaw • Romania: NIPNE & PU Bucharest • Sweden: Univ. Lund, KTU Stockholm, Univ. Uppsala • UK: CLRC Daresbury, Univ. Brighton, Keele, Liverpool, Manchester, Paisley, Surrey, York AGATA Organisation Steering Committee ASC Chair: Marcello Pignanelli, Milan 14 representatives of 10 EU countries Management Board AMB PM: John Simpson, Daresbury 7 Working Groups Detector Local Level Conceptual Design Ancillary Data EU Module Processing Design and and Detectors Analysis Contact J.Eberth R.Krücken Global Level Infrastructure and their J.Nyberg W.Korten Processing G.Duchêne Integration D.Bazzacco A.Gadea Working Teams AGATA SPECS Quantity Specified for Target Value E_ = 1 MeV, M_ = 1, b < 50 % Photo-peak efficiency (eph) 0.5 25 % E_ = 1 MeV, M_ = 30, b < 10 % E0.5= 1 MeV, M = 1 60 - 70 % Peak-to-total ratio (P/T) _ _ E_ = 10 MeV, M_ = 1 E_ = 1 MeV, M_ = 30 40 - 50 % Angular resolution (Dqg) DE/E < 1% better than 1° M = 1 3 MHz Maximum event rates _ M_ = 30 300 kHz Inner free space (Ri) 170 mm efficiency, energy resolution, dynamic range, angular resolution, timing, counting rate, modularity, angular coverage, inner space Two candidate configurations Size of Ge crystals : length 90 mm diameter 80 mm 180 hexagonal crystals 3 shapes 120 hexagonal crystals 2 shapes 60 triple-clusters all equal 40 triple-clusters 2 shapes Inner radius (Ge) 22 cm Inner radius (Ge) 17 cm Amount of germanium 310 kg Amount of germanium 220 kg Solid angle coverage 80 % Solid angle coverage 74 % Singles rate ~50 kHz Singles rate ~70 kHz 6660 channels 4440 channels Efficiency: 40% (Mg=1) 25% (Mg=30) Efficiency: 38% (Mg=1) 21% (Mg=30) Peak/Total: 65% (Mg=1) 50% (Mg=30) Peak/Total: 63% (Mg=1) 47% (Mg=30) AGATA Detectors Hexaconical Ge crystals 90-100 mm long 80 mm max diameter 36 segments Al encapsulatation 3 encapsulated crystals 0.6 mm spacing 0.8 mm thickness 111 preamplifiers with cold FET 37 vacuum feedthroughs ~230 vacuum feedthroughs Italy&Germany ordering 3 symmetric encapsulated crystals. Cryostat built by CTT in collaboration with IKP-Köln First triple cluster ready by mid 2004 The AGATA Demonstrator Objective of the final R&D phase 2003-2007 1 symmetric triple-cluster 5 asymmetric triple-clusters 36-fold segmented crystals 540 segments 555 digital-channels Eff. 3 – 8 % @ Mg = 1 Eff. 2 – 4 % @ Mg = 30 Full ACQ with on line PSA and g-ray tracking Test Sites: GANIL, GSI, Jyväskylä, Köln, LNL, … Cost ~ 7 M € Data rates in AGATA @ 50 kHz singles SEGMENT Preprocessing save 600 ns of + 100 Ms/s 200 MB/s Energy & pulse rise time ADC - 14 bits Classification ~ 200 B/segment ~ 10 MB/s GL-Trigger LL-Trigger DETECTOR Suppression / E, t, x, y, z,... Compression 36+1 ‡ 7.5 kB/event 1.5 ··· 7.5 kB/ev Pulse 100 B/ev Shape 380 MB/s ~ 100 MB/s Analysis 5 MB/s GLOBAL < 100 MB/s Event g-ray HL-Trigger, Storage 5*n‡ max. 900 MB/s Builder Tracking On Line Analysis GL-Trigger to reduce event rate to whatever value PSA will be able to manage Structure of Electronics and Data Processing Local Level Digital Preamplifier Synchronous Preamp. Digitisers Com.Clock PSA Preprocess GL Trigger Buffered Control, Ev. Build. Tracking Storage Global Level AGATA Electronics and Data Processing • Logical structure is layered: – Preamplifiers Digital Preamplifier – Digitizers – Segment level processing – Energy, (Time) – Detector level processing – Trigger, Time, PSA – Global level processing – Event builder, g-ray tracking, Software trigger, Storage • Architecture should reflect this fact AGATA Electronics and Data Processing • Fully Synchronous System: – Central (100 MHz) clock – Time stamp (48 bit clock counter) to tag samples – Hierarchical distribution of clock and tag ‡ detectors (clock & tag) ‡ segments (clock) ‡ ancillary detectors (clock & tag) • Based on (180) independent detector systems deriving their local trigger from Ge common contact • Total data readout and software trigger when possible • Global Level hardware trigger when needed • Data Processing on dedicated HW and farms of PCs • Our goal is to hide the complexity of the data processing and provide the users of AGATA with “classical” data sets Structure of WG and tasks of teams • T1: Global Clock and Trigger – Definition and implementation. Strongly coupled with LLP (and ancillary detectors) • T2: DAQ “HW” – Farm Infrastructure (+ farms for PSA?); Event Builder • T3: DAQ “SW” – Run Control; Data Storage • T4: Conceptual Design – MC simulations and choice of configuration • T5: g-ray Tracking – Algorithms and On-Line Tracking Time scale of developments (to be updated at the end of this meeting) • T1: One year for first prototypes. Clock (and Trigger) needed to test LPP electronics • T2: Start working on event builder with simulated data. GLP farm not needed before 2-3 years • T3: Start working on GUI, in conjunction with slow control. Track technology for data storage • T4: Now. Orders of asymmetric capsules, foreseen to start in 2004, depend on selected geometry, • T5: Couple of years. Real data will not be available soon. Time to improve algorithms. Scope of the meeting • Exchange of ideas among the experts • Definition of teams and identification of possible team leaders. The final organization will be decided at next AMB meeting • Concrete plans on how to proceed should be presented to the AGATA community at the first AGATA week September 15-19 Padova/Legnaro Program of the meeting Thursday 15th Friday 16th Global Clock and Trigger: Conceptual Design: M.Bellato G.Duchêne L.Lazarus E.Farnea P.Medina K.Hauschild L.Olivier Data Acquisition: g-ray Tracking: G.Duchêne J.Cresswell F.Camera X.Grave A.Lopez Martens G.Maron C.Rossi Alvarez.