AGATA WeekIntroduction

John SimpsonNuclear Physics Group

GSI, 21-15 February 2005

AGATA WEEK

ALL AGATA teams to meet

ALL to be present throughout the week

Travel, information exchange, overlap of tasks between groups

Specifications to be agreed and finalised

Programme

Monday 21st February

Introduction followed by

Status reports

EU JRA project

Gretina

Buffet dinner

Tuesday 22nd February

Detectors, performance, simulation and DA

a.m Plenary session. Status report from teams and Gretina

p.m. Team meetings Physics and event simulation of key experiments, data analysis,

detectors

preamplifiers, characterisation,

GTS and ancillary interface and tracking

Wednesday 23st FebruaryData processing, ancillary detectors and infrastructure

a.m Plenary session. Status report from teams p.m. Team meetings DAQ, run control and GUI, Digitisation,

pre-processing, GTS, PSA, Mechanics, R&D on other detectors, Key experiments and ancillary detectors

Thursday 24th February

a.m AMB/ASC Gretina discussiona.m. Data bases

p.m. ASCp.m. Grounding and slow control

Friday 25th February

a.m AMB

Rooms available on Thursday and Friday

Programme

AGATA TEAMS and TEAM LEADERSDetector Module Working Group. Chairperson Juergen Eberth.  Detector module and cryostat leader D. Weisshaar

Preamplifier leader A. Pullia Detector performance. Chairperson Reiner Krucken.  Pulse shape analysis team leader R.Gernhaeuser/P.Desesquelles

Detector characterisation team leader A. Boston

 Data Processing Chairperson D.Bazzacco

Digitisation leader P.MedinaPre-processing algorithms leader W. GastPre-processing hardware leader I.Lazarus Global clock and trigger leader M.BellatoData acquisition leader X.GraveRun control and GUI leader G.Maron 

Ancillary detectors and ancillary detector integration. Chairperson A.Gadea.Ancillary detector impact on AGATA performancesElectronics and data acquisition integration leader Ch.TheisenMechanical integration of ancillary detectors and devices in AGATAAncillary devices for the key experiments leader N.RedonOther team leaders are to be identified.

 Design and Infrastructure. Chairperson G.Duchêne. (leaders to be agreed)

Mechanical design leader(K.Fayz/J.Simpson)Infrastructure leader (P.Jones)

R&D on other Ge detectors. leader (D.Curien)

Data Analysis Working Group. Chairperson Johan Nyberg.Physics and event simulation of key experiments leader E. FarneaDetector data base parameters leader K.HauschildGamma-ray tracking leader W.Lopez-Martens Data processing (online/offline analysis, etc.) leader O.Stezowski

The AGATA CollaborationMemorandum of Understanding 2003 Research and Development

Bulgaria: Univ. Sofia Denmark: NBI Copenhagen Finland: Univ. Jyvaskyla France: GANIL Caen, IPN Lyon, CSNSM Orsay, IPN Orsay,

CEA-DSM-DAPNIA Saclay, IreS Strasbourg

Germany: HMI Berlin, Univ. Bonn, GSI Darmstadt, TU Darmstadt, FZ Jülich, Univ. zu Köln, LMU München, TU München

 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: NINP and IFJ 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, CLRC Daresbury, Univ. Keele, Univ. Liverpool, Univ. Manchester,

Univ. Paisley, Univ. Surrey, Univ. York

 

Turkey

Hungary

The AGATA RESEARCH and DEVELOPMENT PHASE

•Develop 36 fold segmented encapsulated detector of right shape

•Develop cryostat for groups “clusters” of these detectors

•Develop digital electronics (700 channels)

•Finalise signal algorithms for energy, position and time

•Develop tracking algorithms

•Build demonstration unit to prove tracking in real situations

•Write technical proposal for full array

The First Step:The AGATA Demonstrator

Objective of the final R&D phase 2003-2008

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 ACQwith on line PSA and -ray trackingTest Sites:GANIL, GSI, Jyväskylä, Köln, LNLCost ~ 7 M €

Funding

k€ ex taxFrance 1108Germany 531Italy 1250UK 725Total 3614

Munich 550Total 4164

Sweden ~725Turkey

Estimated costDemonstrator(3 sym + 9 asymm)

k€ ex taxDetectors 2928Electronics 1039DAQ 351D&I 35Ancillaries 25Data analysis 20Misc. 60Total 4458

Capital for the demonstrator

Funding

Cost greater than current available funds!

Accurate estimates now required for all parts of project

Timescale / Project Plan

Five year research and development phase of AGATAStart January 2003 End December 2007Aim to have sufficiently large enough array to test tracking and performance with sources and in beamTimescales are driven by detector and DAQ deliveries.

Global timescale estimates:

First three symmetric capsules deliveredTest individual as 3-unit module by summer 20058 asymmetric capsules have been ordered (almost)Deliveries from Nov 2005 to February 2007Tests of all individual components of DAQ chain by March 2006Test of complete chain with detector March to June 2006Production from autumn 2006, delivery early 2007Source and in beam testsGUI, algorithms PSA, tracking, infrastructure, mechanical design…

2004 2005 2006 2007

Timescale / Project Plan

Specifications

http://npg.dl.ac.uk/documentation/AGATA/specifications/

GSI AGATA site

•Technical description

•Costs

•Timescale

Need a complete project plan

The 4 180 detector Configuration

180 hexagonal crystals 3 shapes60 triple-clusters all equalInner radius (Ge) 23.1 cmAmount of germanium 362 kgSolid angle coverage 82 %Singles rate ~50 kHz6480 segments

Efficiency: 43% (M=1) 28% (M=30)Peak/Total: 58% (M=1) 49% (M=30)

Ge crystals size:length 90 mmdiameter 80 mm

http://agata.pd.infn.it/documents/simulations/comparison.html

AGATA Detectors

3 encapsulated crystals111 preamplifiers with cold FET~230 vacuum feedthroughs

LN2 dewar, 3 litre, cooling power ~8

watts

Hexaconical Ge crystals90 mm long80 mm max diameter36 segmentsAl encapsulation

0.6 mm spacing0.8 mm thickness

37 vacuum feedthroughs

AGATA Prototypes•Symmetric detectors

–3 ordered, Italy, Germany

–3 delivered

–Acceptance tests in Koln

–3 work very well First results very good:

36 outer contacts 0.9-1.1 keV at 60keV and 1.9-2.1 keV at 1.3 MeV Core1.2 keV at 60 keV and 2.1 keV at 1.3 MeV

Cross talk less than 10-3

AGATA Prototypes

Asymmetric detectors for the 180 geometry

–8 ordered in 2004 (early 2005)

–4 to be ordered in 2005

–delivery starts end 2005

Full scan of first in Liverpool

Assembly of triple cryostat (CTT)

Cluster ready by Summer 2005

First triple cryostat in Cologne

AGATA Design and Construction

GRETINA

Segment level processing: energy, timeDetector level processing: trigger, time, PSAGlobal level processing: event building, tracking, software trigger, data storage

• Demonstrator ready in 2007

• Next phases discussed in 2005-2006

• New MoU and bids for funds in 2007• Start construction in 2008• Rate of construction depends on

production capability• Stages of physics exploitation,

facility development

Status and Evolution

5 Clusters5 Clusters113355 Clusters55 Clusters44 Array Array

The Phases of AGATA-180

5 Clusters5 ClustersDemonstratorDemonstrator

The Phases of AGATA

GSI FRS RISINGLNL PRISMA CLARAGANIL VAMOS EXOGAMJYFL RITU JUROGAM

12007

Main issue is Doppler correction capability coupling to beam and recoil tracking devicesImprove resolution at higher recoil velocity

Extend spectroscopy to more exotic nuclei

Peak efficiency3 – 8 % @ M = 1

2 – 4 % @ M = 30

Replace/Complement

15 Clusters 15 Clusters 11

The Phases of AGATA 2

The first “real” tracking arrayUsed at FAIR-HISPEC, SPIRAL2, SPES, HI-SIBCoupled to spectrometer, beam tracker, LCP arrays …Spectroscopy at the N=Z (100Sn), n-drip line nuclei, …

0

5

10

15

20

25

30

35

40

45

50

1 2

Effi

cie

ncy

(%

)

Solid Angle (%)

Efficiency M = 1

Efficiency M = 10

Efficiency M = 20

Efficiency M = 30

= 0 = 0.5

The Phases of AGATA 345 Clusters45 Clusters

33

Ideal instrument for FAIR / EURISOLAlso used as partial arrays in different labsHigher performance by coupling with ancillaries

60 Clusters60 Clusters44

The Phases of AGATA 4

Full ball, ideal to study extreme deformationsand the most exotic nuclear speciesMost of the time used as partial arraysMaximum performance by coupling to ancillaries

AGATA Week

IReS Srasbourg14th – 18th November 2005