1. AGATA: Advanced Gamma Tracking Array
AGATA WEEK SUMMARY and STATUS
MANY APOLOGIES
John Simpson
Nuclear Physics Group
Daresbury Laboratory
Introduction
Overview of the system
Physics outcomes from this meeting important
define physics case
experimental constraints
range of experiments
key experiments demonstrator/full array
meeting
Key design parameters Before too late
120/180 decision
Presented by:

2. AGATA The Advanced Gamma Ray Tracking Array
Introduction: The AGATA project
Current status of the AGATA; towards the “demonstrator”
Exploitation of AGATA; demonstrator and beyond
Next generation g-ray spectrometer based on gamma-ray tracking
4 germanium array  no Compton suppression shields
Versatile spectrometer with very high efficiency and excellent spectrum quality for radioactive and high intensity stable beams
What is it?
Why tracking?

3. 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

4. The AGATA Collaboration Memorandum of Understanding 2003-07 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

5. The AGATA Organisation (Many thanks to everybody)
AGATA Steering Committee
Chairperson: W.Korten (and EURONS) Vice Chairperson: P.J. Nolan
G.deAngelis, A.Atac, F. Azaiez, D.Balabanski, D.Bucurescu, B.Cederwall,
J. Gerl, J.Jolie, R.Julin, W.Meczynski,, M.Pignanelli, G.Sletten, P.M.Walker
AGATA Management Board
J.Simpson (Project Manager)
D.Bazzacco, G.Duchêne, P. Reiter, A.Gadea, J.Nyberg, Ch. Theisen
AGATA Working Groups
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

6. The First Step: The AGATA Demonstrator Objective of the final R&D phase 2003-2008
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 M € Capital
Powerful array in its own right
Still to decide where to site
Still to decide the key test experiments

7. AGATA Detectors 3 delivered
Symmetric detectors
3 delivered
Asymmetric detectors
17 ordered (6 accepted, 4 in test, 7 in 2007/8)
Preamplifiers available
Core (Cologne); Segment (Ganil & Milano)
Test cryostats for characterisation
5 delivered
Triple cryostats
4 (soon 5) ordered
1st being assembled November 2007
Hexaconical Ge crystals
90 mm long
80 mm max diameter
36 segments
Al encapsulation
0.6 mm spacing
0.8 mm thickness
37 vacuum feedthroughs
The capsules
Status

8. AGATA triple-detector module
3 encapsulated Ge crystals in one cryostat
111 preamplifiers with cold FET
~230 vacuum feedthroughs
LN2 dewar, 3 litre, cooling power ~8 watts
First prototype summer 2005

9. AGATA triple-detector module
Plans for 2007:
First asymmetric triple module being assembled now
Source and possibly in-beam tests using “standard” digital electronics

10. AGATA Design and Construction
Steps to the full array.
Capsule
triple cryostat
demonstrator
geometry full array
Support structure
Final realisation
180 geometry defined
Conceptual design of 180 array done
Specifications of infrastructure parts done
Design of AGATA demonstrator for LNL final stages
Flanges manufacture started
Assembly in LNL, 2007

11. Characteristation and Scanning
Comparison of real and calculated pulse shapes. Validate codes.
Coincidence scan for 3D position determination
Two symmetric capsules
scanned in Liverpool
Commissioning of further
scanning systems
at Orsay and GSI
Scan of an asymmetric capsule
in Liverpool: A PRIORITY
Scan of the 3rd symmetric capsule
288keV
374keV
662keV

12. Pulse-Shape Analysis: current status
Results from the analysis of an in-beam test with the first triple module,
e.g. Doppler correction of gamma-rays using PSA results
d(48Ti,p)49Ti, v/c ~6.5%
Results obtained with Grid Search PSA algorithm (R.Venturelli et al.)
Position resolution ~4.4mm
Many different methods are under development
Implementation decision?

13. AGATA Digitiser Module 36+1 channels, 100 MhZ, 14 bits (Strasbourg - Daresbury – Liverpool)
Mounted close to the Detector 5-10 m
Power Dissipation around 400W
Water Cooling required
Testing in Liverpool
(December 2006)
Production in progress
(for 18 modules)
First production digitizer at Daresbury
Prototype Segment Board
(2 boards per crystal)

14. Pre-processing modules (E,T, hits, …)
ATCA standard :
“full mesh” communication with
Gbit Ethernet or PCIexpress switches
Prototypes tested in 2006
Core digitizer to core mezzanine and carrier communication errors
Redesign of carrier (from Nov06)
Redesign of mezzanines (from Dec06)
New cards under test
Good results so far
1 ATCA crate for 2 clusters (6 Ge crystals, 222 channels)

15. Timescales for the AGATA demonstrator
Six years research and development phase of AGATA
Start January 2003 ― End December 2008
First three symmetric Ge crystals delivered in 2004
First triple module tested in-beam in summer 2005
Two symmetric crystals scanned for PSA by end 2006
First electronics prototypes delivered in summer 2006
Five asymmetric Ge crystals delivered by end 2006
First scan of asymmetric crystals planned autumn 2007
First AGATA triple module ready by autumn 2007
Second generation electronics prototypes by autumn 2007
Commissioning of first full electronics chain in spring 2008
Commissioning of sub array at Legnaro from autumn 2008
Go through
5 year project
Detector deliveries
2007 experiments

16. Status and Evolution First physics campaign at LNL in 2009
Next campaigns at GANIL then GSI
MoU for AGATA construction from 2008
Aim 1p in possible in ~2011
Rate of construction depends on production capability and financing
Stages of physics exploitation, facility development

17. Talks from last AGATA week
More Information
AGATA web page
Talks from last AGATA week
ORSAY January 2007
Please visit site
Input to Juergen Gerl or Samit Mandel
All AGATA sites linked together

18. The Management

19. Thanks