AGATA Advanced Gamma Tracking Array Introductions Presentations John

AGATA: Advanced Gamma Tracking Array

Introductions Presentations • John Simpson – – International Project Leader Chair of AGATA management Board Technical co-ordinator International status and overview • Paul Nolan – Chair of AGATA Steering Committee – UK Spokesperson – Status of this grant • Jonathan Strachan – Project manager – AGATA Mechanical Engineer & WP 6 leader

International status and Overview • • • What is AGATA? AGATA Demonstrator Phase Status UK Contribution New Mo. U (exploitation and development) Physics Campaigns

New challenges in Nuclear Structure Shell structure in nuclei • Structure of doubly magic nuclei Shape coexistence • Changes in the (effective) interactions Proton drip line and N=Z nuclei • Spectroscopy beyond the drip line • Proton-neutron pairing • Isospin symmetry 48 Ni 100 Sn 132+x. Sn 78 Ni Transfermium nuclei Nuclear shapes and high spins • Exotic shapes and isomers • Hyperdeformation • Coexistence and transitions Neutron rich heavy nuclei (N/Z → 2) • Large neutron skins (rn-r → 1 fm) • New coherent excitation modes • Shell quenching Nuclei at the neutron drip line (Z→ 25) • Very large proton-neutron asymmetries • Resonant excitation modes • Neutron Decay

Idea of -ray tracking Large Gamma Arrays based on Compton Suppressed Spectrometers EUROBALL e ~ 10 — 5 % ( M =1 — M =30) Tracking Arrays based on Position Sensitive Ge Detectors AGATA e ~ 40 — 20 % ( M =1 — M =30) Huge increase in sensitivity

Long Range Plan 2004 Recommendations and priorities • • In order to exploit present and future facilities fully and most efficiently, advanced instrumentation and detection equipment will be required to carry on the various programmes. The project AGATA, for a 4 -array of highly segmented Ge detectors for g-ray detection and tracking, will benefit research programmes in the various facilities in Europe. Nu. PECC gives full support for the construction of AGATA and recommends that the R&D phase be pursued with vigour. Long Range Plan 2009/10 AGATA the major instrument

AGATA (Design and characteristics) 4 -array for Nuclear Physics Experiments at European accelerators providing radioactive and stable beams Main features of AGATA Efficiency: 43% (M =1) 28% (M =30) today’s arrays ~10% (gain ~4) Peak/Total: 58% (M =1) today ~55% 5% (gain ~1000) 49% (M =30) 40% Angular Resolution: ~1º FWHM (1 Me. V, v/c=50%) ~ 6 ke. V !!! today ~40 ke. V Rates: 3 MHz (M =1) 300 k. Hz (M =30) today 1 MHz 20 k. Hz • 180 large volume 36 -fold segmented Ge crystals in 60 triple-clusters • Digital electronics and sophisticated Pulse Shape Analysis algorithms allow • Operation of Ge detectors in position sensitive mode -ray tracking

The AGATA Collaboration Memorandum of Understanding 2003 Research and Development phase Bulgaria: Univ. Sofia Denmark: NBI Copenhagen Finland: Univ. Jyväskylä France: GANIL Caen, IPN Lyon, CSNSM Orsay, IPN Orsay, CEA-DSM-DAPNIA Saclay, Ire. S Strasbourg Germany: GSI Darmstadt, TU Darmstadt, Univ. zu Köln, LMU München, TU München Hungary: Debrecen Italy: INFN and Univ. Firenze, INFN and Univ. Genova, INFN Legnaro, INFN and Univ. Napoli, INFN and Univ. Padova, INFN and Univ. Milano, INFN Perugia and Univ. Camerino Poland: IFJ PAN Krakow, SINS Swierk, HIL & IEP Warsaw Romania: NIPNE & PU Bucharest Sweden: Chalmers Univ. of Technology Göteborg, Lund Univ. , Royal Institute of Technology Stockholm, Uppsala Univ. UK: Univ. Brighton, STFC Daresbury, Univ. Edinburgh, Univ. Liverpool, Univ. Manchester, Univ. Paisley, Univ. Surrey, Univ. York Turkey: Univ. of Ankara, Istanbul University

The First Step: The AGATA Demonstrator 1 symmetric triple-cluster 5 asymmetric triple-clusters 36 -fold segmented crystals 540 segments 555 digital-channels Eff. 3 – 8 % @ M = 1 Eff. 2 – 4 % @ M = 30 Full EDAQ with on line PSA and -ray tracking In beam Commissioning Technical proposal for full array Cost 6. 7 M€ Capital

Ingredients of -Tracking 1 Highly segmented HPGe detectors · · 2 4 Identified interaction points (x, y, z, E, t)i Reconstruction of tracks e. g. by evaluation of permutations of interaction points Pulse Shape Analysis to decompose recorded waves 3 Digital electronics to record and process segment signals reconstructed -rays

First AGATA triple-detector @ IKP Cologne

Asymmetric AGATA Triple Cryostat - integration of 111 high resolution spectroscopy channels - cold FET technology for all signals Challenges: - mechanical precision - heat development, LN 2 consumptio - microphonics - noise, high frequencies

Detectors • • • 3 symmetric detector delivered and operational 15 asymmetric capsules ordered R&D phase 12 operational 11/12 ordered next phase Deliveries 2009/2010 More orders (France and Italy soon) • 5 triple cryostats ordered 2(3) operational • 5 test cryostats available (scanning, CAT tests, electronics tests. )

Electronics and Data Acquistion • • • Preamplifiers (Ganil, Milano, Cologne) Digitizers Pre-processing Trigger DAQ (tracking, storage, GUI)

AGATA Digitiser Module 36+1 channels, 100 Mh. Z, 14 bits (Daresbury – Liverpool - Strasbourg) • 18 assembled • 7 in operation in Legnaro Prototype Segment Board (2 boards per crystal) First production digitizer at Daresbury

Pre-processing (Position) Management of team only Status: Production for 18 detector/capsules in progress – Carrier cards- 25 delivered (8 mid-June). 9 commissioned and working – Segment mezzanines- 50 delivered (60 mid-June) 33 working – Electronics not on critical path!!

AGATA Demonstrator at PRISMA

Status of the installation • Basic local infrastructure complete • Full chain of EADQ for one triple complete • Full chain for two triples now • Commissioning with a simple ancillary

UK Contribution • • • Project Management Digitizer electronics EDAQ specification Mechanical Design Detector characterisation

International Contribution to R&D phase • Mo. U 2003 • Total capital 6. 7 M€ (ex VAT) • UK commitment EPSRC (£ 2. 3 M) capital 0. 95 M€ (ex VAT), FTE 46. 5

Project management: AGATA Organisation AGATA Steering Committee Chairperson: P. J. Nolan, Vice Chairperson: B. Cederwall G. de. Angelis, A. Atac, F. Azaiez, D. Balabanski, A, Bracco, D. Bucurescu, B. Cederwall, J. Gerl, J. Jolie, W. Korten R. Julin, W. Meczynski, P. M. Walker AGATA Management Board J. Simpson (Project Manager) D. Bazzacco, G. Duchêne, P. Reiter, A. Gadea, J. Nyberg, Ch. Theisen, E. Farnea AGATA Working Groups and leaders Detector module P. Reiter Front-end Processing D. Bazzacco Data Acquisition Ch. Theisen Design and Infrastructure G. Duchêne Ancillary detectors and integration A. Gadea Simulation and Data Analysis J. Nyberg Elec. and DAQ integration P. Bednarczyk Gamma-ray Tracking A. Lopez-Martens AGATA Teams Detector and Cryostat B. Bruyneel Digitisation P. Medina Data acquisition X. Grave Mechanical design Preamplifiers A. Pullia Pre-processing Run Control & GUI G. Maron Infrastructure P. Jones Devices for key Experiments N. Redon Physics & exp. simulation E. Farnea Detector Characterisation Global clock and Trigger M. Bellato R & D on gamma Detectors D. Curien Impact on performance M. Palacz Detector data base K. Hauschild Mechanical Integration J. Valiente Dobon Data analysis O. Stezowski A. Boston I. Lazarus PSA R. Gernhaeuser/ P. Desesquelles J. Strachan

Commissioning in Legnaro • • Series of Source and in-beam tests March (no ancillary) June-July (Dante –MCP) Further 20 days requested from Sept AGATA+DANTE+Interface AGATA+PRISMA (tandem) AGATA+PRISMA (ALPI beams)

In-beam run March 2009 • Aims • To test the detector in real experiment conditions • DAQ – Pre-processing electronics – On-line analysis • Acquire useful data for off-line optimization of the system

• 30 Si@70 Me. V RUNNING! + 12 C n Pre-processing n PSA n Tracking 11: 42 17/03/2009

Non-segmented detector DET 1823 ke. V ? ?

AGATA DET SEG 17. 7 ke. V

AGATA DET SEG MGS 14. 6 ke. V

AGATA DET SEG MGS JASS 12. 5 ke. V

Run last week • Reaction is 56 Fe on 208 Pb, • One triple cluster and DANTE • DAQ consists of 11 nodes. PSA, tracking and Doppler correction performed on line considering the central position of DANTE. • The spectra show the 2+->0+ of 56 Fe at 847 ke. V. • No clear info about the narrowing of the peak. • The trigger is the OR of DANTE plus one of the crystal. • The coincidence rate is around 150 Hz.

Fantastic progress • Immediate aims and issues – Test with ancillary detector – Test with 2 or more triples (2 nd installed next week) – Start physics experiments

Issues AGATA collaboration • • Detectors Characterisation Production of electronics Staffing Organisation of the next phase New Mo. U Siting

New Mo. U • In operation • Signed by STFC • Defines build up, operation and exploitation of full project • New management structure • Defines in more detail the build up to a 1/3 array • UK signed up bid for 2460 k€ capital 550 FTE (months) • This grant 893 k€ capital 470 FTE (months)

New Mo. U committments • UK this grant • Other major countries – All countries on different timescales – Germany 1 M€, bid again 2012 – Italy 2 triple systems assured, 5 year plan INFN being submitted – France Bidding now (3 triple systems initially) • Successful defence last week IN 2 P 3 – Sweden Bid when relationship to FAIR clear – Other countries (Turkey, etc. ) • Key fact: Will have 10 triple clusters by end 2010

The siting issues • • At time of grant submission LNL- Ganil- GSI ~15 month campaigns New timescales Ganil Shutdown for SPIRALII installation mid 2011 -early 2012 • Re-evaluation of schedule

The current plan • Under discussion, ASC-Labs. Collaborations (Nu. STAR/PRESEPC) • Meeting of AGATA, Lab directors, PAC Chairs last week • GSI as the next site • If GSI then: – Run in LNL until June 2011 – Earliest start GSI October 2011 – Earliest start GANIL March 2013

Current planning • Affects this grant

THANKS

The AMB The ASC

Experimental conditions and challenges FAIR SPIRAL 2 HIE-ISOLDE EURISOL ECOS • • • Low intensity High backgrounds Large Doppler broadening High counting rates High -ray multiplicities High efficiency High sensitivity High throughput Ancillary detectors Need instrumentation

-array for Nuclear Physics Experiments at European accelerators providing radioactive and stable beams HIE-ISOLDE GANIL SPIRAL 2 FAIR Jyvaskyla AGATA LEGNARO

AGATA detector detail

AGATA Front end electronics Digitizers: 18 assembled (UK), 7 operational in Legnaro, 3 Turkey (need to go to Strasbourg), 5 in Strasbourg, 3 in UK to go to Strasbourg. Pre-processing in production. Will be 40 carrier cards in total. Note, 2 carrier cards needed per crystal. 6 made by Padova. 34 in production in IPNO. 25 carrier cards have been delivered (rest mid June). Under test (9 tested and working). Segment mezzanine, 110 being manufactured (CSNSM), 50 delivered (60 mid June), 33 working early June. Note, need 7 per crystal since also being used for the core. Linco (card per carrier card to transmit data to processor/PSA farm), 6 in use, 10 in production, end June. GTS: one needed per crystal, plus a few for triggering and interfacing to ancillary detectors; 20 in production (out of 35), first modules expected beginning of July. Online digital trigger installed and tested: used in the end-May test (coincidence Dante-Ge) Overall aim to have a system for two triple clusters before summer vacations (almost ready now) Test system is being built up in Orsay.

Characteristation and Scanning Comparison of real and calculated pulse shapes. Validate codes. Coincidence scan for 3 D position determination Two symmetric capsules scanned in Liverpool 374 ke. V 288 ke. V Further scanning systems Orsay operational (A 005 or A 006) C 001 scanning in progress in Liverpool 662 ke. V