Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Status of the AGATA project Recent developments Milestones and deliverables for 2006 Plans for 2007/08 Main features of AGATA Efficiency: 40% (M  =1) 25% (M  =30) today’s arrays ~10% (gain ~4) 5% (gain ~1000) Peak/Total: 55% (M  =1) 45% (M  =30) today~55% 40% Angular Resolution: ~1º  FWHM (1 MeV, v/c=50%) ~ 6 keV !!! today~40 keV Rates: 3 MHz (M  =1) 300 kHz (M  =30) today 1 MHz 20 kHz 180 large volume 36-fold segmented Ge crystals in 60 triple-clusters Digital electronics and sophisticated Pulse Shape Analysis algorithms Operation of Ge detectors in position sensitive mode   -ray tracking

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Ingredients of  -ray Tracking Pulse Shape Analysis to decompose recorded waves Highly segmented HPGe detectors · · · · Identified interaction points (x,y,z,E,t) i Reconstruction of “tracks” e.g. by evaluation of permutations of interaction points Digital electronics to record and process segment signals  Spectroscopic studies

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 AGATA symmetric prototypes

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Acceptance tests on prototypes FWHM at 1.3MeV FWHM at 60keV Mean(1.3MeV)=1.99keV Mean(60keV)=1.14keV IKP Cologne 001 Core FWHM: at 1.3MeV : 2.10keV at 122keV : 1.20keV

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Acceptance tests on prototypes FWHM at 1.3MeV FWHM at 60keV Mean(1.3MeV)=1.98keV Mean(60keV)=1.07keV Core FWHM: at 1.3MeV : 2.08keV at 122keV : 1.19keV GSI 002

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Acceptance tests on prototypes FWHM at 1.3MeV FWHM at 60keV Mean(1.3MeV)=2.01keV Mean(60keV)=1.03keV Core FWHM: at 1.3MeV : 2.13keV at 122keV : 1.10keV INFN Padova 003

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 First AGATA triple module Univ. Cologne August 2005 Goal: Validation of pulse-shape analysis codes under realistic experimental conditions

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Planning for AGATA detectors in 2006 Three symmetric detectors are being mounted in test cryostats for characterisation (3D scanning): cryostat 1: scanning in Liverpool ongoing cryostat 2: delivery to Orsay in April cryostat 3: delivery to GSI in June Two first asymmetric Ge crystals do not meet specifications and were returned to Canberra- Eurisys for repair. First detector from “new batch” expected in April. If problems have been solved by Canberra-Eurysis, first asymmetric triple ready by the end of 2006

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Electronics and DAQ developments Up to 180 detectors Synchronous Buffered Analogue Detector preamp. Digitisers Tracking Control, Storage… Event Builder Clock 100 MHz T-Stamp Preprocessing PSA Core + 36 seg. Ancillary 1. Ancillary 2. Handling of ancillary detectors 1.interface to GTS via mezzanine 2.merge time-stamped data into event builder 3.prompt local trigger available from digitisers Ancillary 3. GL Trigger

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Digitiser module 36+1 channels, 100 MhZ, 14 bits (Strasbourg - Daresbury – Liverpool) Mounted close to the Detector 5-10 m Power Dissipation around400W Water Cooling Prototype Segment Board2 boxes per crystal

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Pre-processing modules (E,T, hits, …) (Orsay – Daresbury) 1 ATCA crate for 2 clusters (6 Ge crystals, 222 channels) ATCA standard : “full mesh” communication with Gbit Ethernet or PCIexpress switches ,5U 8U 4,5U 21’’ U X 2 Carriers 1 cluster 3 X 2 Carriers 1 cluster Segment preprocessing mezzanine for 6 channels

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Global Trigger System (GTS) (Padova – Legnaro) GTS Pre-Proc. mezzanine One per detector (also for ancillaries) Trigger processor layout For up to 12 detectors

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Status of electronics and DAQ prototypes Digitisers Q12006 Pre-processing mezzanines Q12006 ATCA carrier cardQ12006 GTS mezzanine 1 (Virtex2)Q22005 “ mezzanine 2 (Virtex4)Q22006 All prototypes tested by Summer 2006 Full processing chain, including prototype of DAQ tested byAutumn2006 Any needed reprocessingAutumn 2006 Production and start deliveryQ42006 Test of a triple-clusterQ1-Q22007 Ready for Demonstrator by fall 2007

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Pulse shape analysis developments Determine the number of interactions –Neural Net Algorithm (IPN Orsay) Recognizes ~86% of single hits Close to 100% of double hits with distance > ~10 mm  Use specific PSA algorithm depending on number of interactions Several PSA algorithms under development: –Wavelet based grid search (GSI) –Matrix inversion algorithm (IPN Orsay) Only code to treat full crystal “at once” Very good results for simple events (  1-3mm, typical time 1ms) Still problematic for multiple adjacent interactions –Particle Swarm search (TU München) So far only single hits per segment Hit in single segment: ~300  s, mean distance 1.7 mm (front), 3.5 mm (back) Hits in two segments: <3 ms, distance 3 – 4.6 mm  PSA has been solved for certain event classes, e.g. single and multiple hits in the detector, but not in the same segment  5 mm average position resolution for 600keV  -rays Implementation and testing in “real” hardware is ongoing

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Status of Pulse shape analysis M. Schlarb et al. (TUM, 2006) Example of the mean distance (in mm) of reconstructed position from real position in front segment simulated signals Similar results from other PSA codes

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Procedure of Gamma tracking ~ 100 keV ~1 MeV ~ 10 MeV  -ray energy Isolated hits Angle/Energy Pattern of hits Photoelectric Compton Scattering Pair Production Probability of E 1st = E  – 2 mc 2 interaction depth

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Algorithm development and optimisation Simulation of interactions of M  photons in Agata (with Agata Geant4 code) Simulation of PSA: packing, smearing, energy threshold Tracking code (e i,x i,y i,z i ) (e’ k,  e’ k x’ k,  x’ k y’ k,  y’ k z’ k,  z’ k) (E  j,  j,  j ) : incident photon energies and emission directions (and scattering directions for polarisation measurements) Data analysis

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Efficient forward tracking algorithms are ready: Effect of neutrons has been investigated  ph reduced by ~1%/neutron Codes have been optimised for speed and specifications for the demonstrator have been met : 0.1 – 3.5 ms/evt for M  =1 -30 (on 1 Opteron 1.7 GHz CPU) FT code currently being implemented into the DAQ Status of gamma-ray tracking E  =1MeV, Mult=1 (30)Mgt (Padova)FT (Orsay) Efficiency (%)43 (28)37 (24) P/T (%)58 (49)67 (51)

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Status of the AGATA project Recent developments –General discussion at the next AGATA week: Liverpool, June 6-9 –Characterising the first prototype Ge detectors –Testing the first electronics and DAQ prototype boards Milestones and deliverables for 2006 –Ge detector prototype characterized (06/06) o.k., but will use symmetric detector due to delay in delivery –Pulse-shape analysis algorithms optimised (06/06) Benchmark will be achieved, but will be ongoing –Gamma-ray tracking algorithms optimised (06/06) Benchmark will be achieved, but will be ongoing –Electronics and DAQ prototypes (06/06) Prototype local level processing electronics and specific data acquisition hardware: Delivery on schedule Ready for Demonstrator by fall 2007

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Planning (EURONS and beyond) Demonstrator commissioning at LNL: second half of 2007 First physics campaign at LNL in 2008 further campaigns (from 2009) at GANIL, GSI, ILL, … LoI for construction phase signed in 2005 to allow bids for new funds from 2006 (D, …) MoU for AGATA construction ready in 2007 Start construction in 2008  1  in possible in 2011 Support in FP7 as an independent RI (I3-TNA, CNI, …)

Wolfram KORTEN, JRA-02 AGATAEURONS PCC-Meeting, Mainz (Germany), April 2006 Other AGATA developments R&D on cryogenics for Ge detectors (cooled He gas)