agata week introduction john simpson nuclear physics group gsi, 21-15 february 2005
TRANSCRIPT
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