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 & WP6 leader

International status and Overview

• What is AGATA?• AGATA Demonstrator Phase• Status• UK Contribution• New MoU (exploitation and development)• Physics Campaigns

Neutron rich heavy nuclei (N/Z → 2)• Large neutron skins (r-r→ 1fm)• New coherent excitation modes• Shell quenching

132+xSn

Nuclei at the neutron drip line (Z→25)• Very large proton-neutron asymmetries• Resonant excitation modes• Neutron Decay

Nuclear shapes and high spins• Exotic shapes and isomers•Hyperdeformation • Coexistence and transitions

Shell structure in nuclei• Structure of doubly magic nuclei • Changes in the (effective) interactions

48Ni100Sn

78Ni

Proton drip line and N=Z nuclei• Spectroscopy beyond the drip line• Proton-neutron pairing• Isospin symmetry

Transfermium nucleiShape coexistence

New challenges in Nuclear Structure

Tracking Arrays based onPosition Sensitive Ge Detectors

Large Gamma Arrays based onCompton Suppressed Spectrometers

40 — 20 % ( M=1 — M=30)

10 — 5 % ( M=1 — M=30)

EUROBALL AGATA

Idea of Idea of -ray tracking-ray tracking

Huge increase in sensitivityHuge increase in sensitivity

Long Range Plan 2004Recommendations 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 2009/10AGATA the major instrument

AGATAAGATA(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% 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 allow• Operation of Ge detectors in position sensitive mode -ray tracking

The AGATA CollaborationMemorandum of Understanding 2003

Research and Development phaseBulgaria: 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

 

The First Step:The AGATA Demonstrator

1 symmetric triple-cluster5 asymmetric triple-clusters

36-fold segmented crystals540 segments555 digital-channels

Eff. 3 – 8 % @ M = 1

Eff. 2 – 4 % @ M = 30

Full EDAQwith on line PSA and -ray trackingIn beam CommissioningTechnical proposal for full array

Cost 6.7 M€ Capital

Ingredients ofIngredients of --TrackingTracking

Pulse Shape Analysisto 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 electronicsto record and

process segment signals

1

2 3

4

reconstructed -rays

First AGATA triple-detector @ IKP Cologne

Asymmetric AGATA Triple Cryostat

Challenges: - mechanical precision - heat development, LN2 consumption - microphonics - noise, high frequencies

- integration of 111 high resolution spectroscopy channels- cold FET technology for all signals

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 MhZ, 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 onlyStatus: 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

• MoU 2003• Total capital 6.7M€ (ex VAT)• UK commitment EPSRC (£2.3M)

capital 0.95 M€ (ex VAT), FTE 46.5

AGATA Management BoardJ.Simpson (Project Manager)

D.Bazzacco, G.Duchêne, P. Reiter, A.Gadea, J.Nyberg, Ch. Theisen, E. Farnea

AGATA Steering Committee

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

Chairperson: P.J. Nolan, Vice Chairperson: B. Cederwall

AGATA Working Groups and leaders

AGATA Teams

Data analysisO.Stezowski

MechanicalIntegration

J. Valiente Dobon

PSAR.Gernhaeuser/P.Desesquelles

Gamma-rayTracking

A.Lopez-Martens

Elec. and DAQintegration

P. Bednarczyk

Mechanical design

J.StrachanDigitisationP.Medina

Data acquisitionX.Grave

Detector and Cryostat

B. Bruyneel

Detector data base

K.Hauschild

Impact on performance

M.Palacz

R & D on gammaDetectorsD.Curien

Global clock and Trigger

M.Bellato

Detector Characterisation

A.Boston

Physics & exp. simulationE.Farnea

Devices for key Experiments

N.Redon

InfrastructureP.Jones

Pre-processing

I.LazarusRun Control

& GUIG.Maron

PreamplifiersA.Pullia

Simulation andData Analysis

J.Nyberg

Ancillary detectors

and integrationA.Gadea

Design andInfrastructureG. Duchêne

Front-endProcessingD.Bazzacco

Detector moduleP.Reiter

DataAcquisitionCh. Theisen

Project management:Project management:AGATA OrganisationAGATA Organisation

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

RUNNING!

Pre-processing

PSA

Tracking

11:4217/03/2009

• 30Si@70MeV + 12C

Non-segmented detector1823 keV ??

DET

AGATADET

SEG

17.7 keV

DET

SEG

MGS

14.6 keV

AGATA

AGATADET

SEG

MGS

JASS

12.5 keV

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.

Fantastic progress

• Immediate aims and issues– Test with ancillary detector– Test with 2 or more triples

(2nd installed next week)– Start physics experiments

Issues AGATA collaboration

• Detectors• Characterisation• Production of electronics• Staffing• Organisation of the next phase• New MoU• Siting

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)

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

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 (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

Plan for AGATA

Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

LegnaroSetupPhysicsNo. detectors 18-21

GSIMove/SetupPhysicsNo. detectors 30-36

GANILMove/SetupPhysicsNo. detectors 48-60

20142009 2010 2011 2012 2013

Current planning

•Affects this grant

THANKS

The AMB The ASC

Experimental conditions and challenges

• Low intensity• High backgrounds• Large Doppler broadening• High counting rates• High -ray multiplicities

High efficiencyHigh sensitivityHigh throughputAncillary detectors

FAIRSPIRAL2HIE-ISOLDEEURISOLECOS

Need instrumentation

LEGNARO

GANILSPIRAL 2

AGATA

HIE-ISOLDE

FAIR

Jyvaskyla

-array for Nuclear Physics Experiments at European accelerators providing radioactive and stable beams

AGATA detector detailDetector Pool last updated: 09.06.09 Detector

Serial Nr location Activity Delivery Report-Date operational

S001 73838 TestC5 Legnaro Electronic test 01.04.04 ? ok S002 73821 IKP IKP cryostat test 01.04.04 ? ok S003 73839 TestC6 Orsay – Scanning finished 01.12.04 ? ok A001 73952 ATC10034 Legnaro - ATC1 01.06.06 01.08.06 ok A002 74030 IKP IKP - Commissioning ATC3 01.06.07 22.04.08 ok A003 74009 ATC10035 IKP - Commissioning ATC2 06.11.07 01.03.08 ok A004 74095 Ankara accredition 01.07.08 Not tested A005 73949 Saclay Saclay 18.11.08 01.02.09 ok A006 74096 Saclay Saclay 28.11.08 01.04.09 ok B001 74034 returned Canberra - Repair 22.01.09 06.02.09 no B002 73979 ATC10034 Legnaro - ATC1 01.08.06 01.11.06 ok B003 74026 ATC10035 IKP - Commissioning ATC2 01.06.07 01.08.07 ok B004 74010 Ankara accredition 05.06.08 ---- Not tested B005 74065 IKP IKP – leakage current 05.03.09 no B006 74076 IKP IKP – leakage current 16.07.08 17.10.08 no C001 73899 TestC3 Liverpool - Scanning 01.12.05 01.05.06 ok C002 73951 ATC10034 Legnaro - ATC1 01.06.06 01.10.06 ok C003 74013 vault IKP - Commissioning ATC3 09.10.08 ---- no C004 74036 Ankara accredition 01.09.07 21.12.07 Not available C005 74033 TestC4 IKP - Commissioning ATC2 11.12.07 22.09.08 ok C006 74115 TestC IKP foreseen ATC3 30.04.09 09.06.09 ok

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

Two symmetric capsules

scanned in Liverpool

Further scanning systems

Orsay operational (A005 or A006)

C001 scanning in progress in Liverpool662

keV

374keV

288keV

Coincidence scan for 3D position determination

Comparison of real and calculated pulse shapes. Validate codes.