1. AGATA: Advanced Gamma Tracking Array

2. 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 & WP6 leader

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

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

5. Huge increase in sensitivity
Idea of -ray tracking
Large Gamma Arrays based on
Compton Suppressed Spectrometers
Tracking Arrays based on
Position Sensitive Ge Detectors
Previous array
Compton suppression
Eff max at 10% good resolution
Exogam, Miniball, high efficiency for medium multiplicity
Limited by solid angle subtended by the shields
50% coverage
Throw away suppression shields
Track every event
Reconstruct the full energy
2 major projects AGATA and GRETA
Eff 40% and multiplicity 1
Even 20% at multiplicity 30
EUROBALL
AGATA
e ~ 10 — 5 %
( Mg=1 — Mg=30)
e ~ 40 — 20 %
( Mg=1 — Mg=30)
Huge increase in sensitivity

6. 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. NuPECC 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

7. 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) 5% (gain ~1000)
Peak/Total: 58% (M=1) 49% (M=30)
today ~55% %
Angular Resolution: ~1º 
FWHM (1 MeV, v/c=50%) ~ 6 keV !!!
today ~40 keV
Rates: 3 MHz (M=1) 300 kHz (M =30)
today MHz kHz
Summary
List few items
Agata very powerful instrument for nuclear spectroscopy
Exciting science programme subject of this meeting
Aim to propose and start realisation of the full AGATA from 2008
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

8. 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, IreS 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
Huge collaboration
Over 40 laboratories in 10 countries
Others joining, Turkey, Hungary

9. 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 Mg = 1
Eff. 2 – 4 Mg = 30
Full EDAQ with on line PSA and g-ray tracking
In beam Commissioning
Technical proposal for full array
Cost 6.7 M€ Capital
Powerful array in its own right
Still to decide where to site
Still to decide the key test experiments

10. Ingredients of g-Tracking4 1
Identified
interaction points
Reconstruction of tracks
e.g. by evaluation of permutations
of interaction points
Highly segmented
HPGe detectors
(x,y,z,E,t)i g
Pulse Shape Analysis to decompose recorded waves 2 3
What has to be done to perform tracking
What are the ingredients
Detectors highly segmented, encapsulated, cryostats
Electronics Digital
PSA to extract Energy Time and Position
Algorithm development particularly for position
Area where effort is required Thorsten Kroell. See him.
Tracking algorithms, reconstruction of the events for full array
Obtain full energy
Many technical development in all areas.
Digital electronics
to record and process segment signals
reconstructed g-rays

11. First AGATA triple-detector @ IKP Cologne
Credits Weisshaar – CTT – Eberth
Lab frame moveable

12. Asymmetric AGATA Triple Cryostat
- integration of 111 high resolution
spectroscopy channels
- cold FET technology for all signals
Challenges:
- mechanical precision
- heat development, LN2 consumption
- microphonics
- noise, high frequencies

13. 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.)

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

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

16. 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!!

18. AGATA Demonstrator at PRISMA

19. 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
Powerful array in its own right
Still to decide where to site
Still to decide the key test experiments

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

21. International Contribution to R&D phase
MoU 2003
Total capital 6.7M€ (ex VAT)
UK commitment EPSRC (£2.3M)
capital 0.95 M€ (ex VAT), FTE 46.5

22. Project management: AGATA Organisation
AGATA Steering Committee
Chairperson: P.J. Nolan, Vice Chairperson: B. Cederwall
G.deAngelis, 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
Simulation and
Data Analysis
J.Nyberg
Ancillary
detectors
and integration
A.Gadea
Design and
Infrastructure
G. Duchêne
Front-end
Processing
D.Bazzacco
Detector
module
P.Reiter
Data
Acquisition
Ch. Theisen
AGATA Teams
How is it organised
Steering committee Funding, Steering, represent countries, Science, meetings like this
Management Board Technical aspects, deliver the project, manage resources
Capital and effort
Through a set of working groups and teams.
Gamma-ray
Tracking
A.Lopez-Martens
Elec. and DAQ
integration
P. Bednarczyk
Mechanical design
J.Strachan
Digitisation
P.Medina
Data acquisition
X.Grave
Detector and
Cryostat
B. Bruyneel
Physics & exp. simulation
E.Farnea
Devices for key
Experiments
N.Redon
Infrastructure
P.Jones
Pre-processing
I.Lazarus
Run Control
& GUI
G.Maron
Preamplifiers
A.Pullia
Detector
data base
K.Hauschild
Impact on performance
M.Palacz
R & D on gamma
Detectors
D.Curien
Global clock and
Trigger
M.Bellato
Detector Characterisation
A.Boston
Data analysis
O.Stezowski
Mechanical
Integration
J. Valiente Dobon
PSA
R.Gernhaeuser/
P.Desesquelles

23. 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)

24. 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

25. RUNNING!
+ 12C
11:42 17/03/2009
Pre-processing
PSA
Tracking

26. Non-segmented detector
1823 keV ??

27. AGATA
DET
SEG
17.7 keV

28. AGATA
DET
SEG
MGS
14.6 keV

29. AGATA
DET
SEG
MGS
JASS
12.5 keV

30. Run last week Reaction is 56Fe on 208Pb, 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 56Fe at 847 keV.
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 150Hz.

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

32. Issues AGATA collaboration
Detectors
Characterisation
Production of electronics
Staffing
Organisation of the next phase
New MoU
Siting

33. New MoU 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)

34. New MoU committments UK this grant Other major countries
All countries on different timescales
Germany 1M€, 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 IN2P3
Sweden Bid when relationship to FAIR clear
Other countries (Turkey, etc.)
Key fact: Will have 10 triple clusters by end 2010

35. 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

36. The current plan
Under discussion, ASC-Labs-Collaborations (NuSTAR/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

37. Current planning
Affects this grant

38. THANKS

39. The ASC
The AMB

40. Experimental conditions and challenges
Low intensity
High backgrounds
Large Doppler broadening
High counting rates
High g-ray multiplicities
FAIR
SPIRAL2
HIE-ISOLDE
EURISOL
ECOS
High efficiency
High sensitivity
High throughput
Ancillary detectors
Need instrumentation

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

42. AGATA detector detail 42

43. 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.

44. Characteristation and Scanning
Comparison of real and calculated pulse shapes. Validate codes.
Coincidence scan for 3D position determination
Two symmetric capsules
scanned in Liverpool
288keV
Further scanning systems
Orsay operational (A005 or A006)
C001 scanning in progress in Liverpool
374keV
662keV