Global Level ProcessingWorking Group

• AGATA

• General layout of data processing

• Tasks of the WG

• Organization

• Schedule

Dino Bazzacco, GLP meeting, May 15-16, 2003, LNL

AGATAThe Advanced Gamma Ray Tracking Array

• Next “big” European 4p g-array for NS studies at– Radioactive beam facilities: GSI, GANIL, SPES, … EURISOL

– High intensity stable beam facilities: LNL, Jyväskylä, ...

• Based on years of worldwide R&D on g-ray tracking• Collaboration of 10 EU countries

– Funded by national agencies and by EU

• Constructed in phases– Demonstrator 2003 · · · 2007– Phases of Full Array · · ·

The AGATA Collaboration• 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: HMI Berlin, Univ. Bonn, GSI Darmstadt, TU Darmstadt,FZ Jülich, Univ. Köln, LMU München, TU München

• Italy: INFN/Univ. Padova, Milano, LNL,Firenze, Camerino, Napoli, Genova

• Poland: NINP & IFJ Krakow, SINS Swierk, HIL & IEP Warsaw

• Romania: NIPNE & PU Bucharest

• Sweden: Univ. Lund, KTU Stockholm, Univ. Uppsala

• UK: CLRC Daresbury, Univ. Brighton, Keele, Liverpool,Manchester, Paisley, Surrey, York

AGATA OrganisationSteering Committee ASC

Chair: Marcello Pignanelli, Milan14 representatives of 10 EU countries

Management Board AMBPM: John Simpson, Daresbury

7 Working Groups

DetectorModuleJ.Eberth

Local LevelProcessingR.Krücken

ConceptualDesign andGlobal LevelProcessingD.Bazzacco

Designand

InfrastructureG.Duchêne

AncillaryDetectorsand their IntegrationA.Gadea

DataAnalysisJ.Nyberg

EUContact

W.Korten

Working Teams

AGATA SPECSTarget ValueSpecified forQuantity

170 mmInner free space (Ri)

3 MHz

300 kHz

M_ = 1

M_ = 30Maximum event rates

better than 1°DE/E < 1%Angular resolution (Dqg)

60 - 70 %

40 - 50 %

E_ = 1 MeV, M_ = 1

E_ = 1 MeV, M_ = 30Peak-to-total ratio (P/T)

50 %

25 %

10 %

E_ = 1 MeV, M_ = 1, b <

0.5

E_ = 1 MeV, M_ = 30, b <

0.5

E_ = 10 MeV, M_ = 1

Photo-peak efficiency (eph)

efficiency, energy resolution, dynamic range, angular resolution,timing, counting rate, modularity, angular coverage, inner space

Two candidate configurations

120 hexagonal crystals 2 shapes40 triple-clusters 2 shapesInner radius (Ge) 17 cmAmount of germanium 220 kgSolid angle coverage 74 % Singles rate ~70 kHz4440 channels

Efficiency: 38% (Mg=1) 21% (Mg=30)Peak/Total: 63% (Mg=1) 47% (Mg=30)

180 hexagonal crystals 3 shapes60 triple-clusters all equalInner radius (Ge) 22 cmAmount of germanium 310 kgSolid angle coverage 80 %Singles rate ~50 kHz6660 channels

Efficiency: 40% (Mg=1) 25% (Mg=30)Peak/Total: 65% (Mg=1) 50% (Mg=30)

Size of Ge crystals :length 90 mmdiameter 80 mm

AGATA Detectors

3 encapsulated crystals

111 preamplifiers with cold FET

~230 vacuum feedthroughs

Hexaconical Ge crystals90-100 mm long80 mm max diameter36 segmentsAl encapsulatation

0.6 mm spacing0.8 mm thickness

37 vacuum feedthroughs

Italy&Germany ordering 3 symmetric encapsulated crystals. Cryostat built by CTT in collaboration with IKP-KölnFirst triple cluster ready by mid 2004

The AGATA DemonstratorObjective of the final R&D phase 2003-2007

1 symmetric triple-cluster5 asymmetric triple-clusters

36-fold segmented crystals540 segments555 digital-channels

Eff. 3 – 8 % @ Mg = 1

Eff. 2 – 4 % @ Mg = 30

Full ACQwith on line PSA and g-ray tracking

Test Sites:GANIL, GSI, Jyväskylä, Köln, LNL, …

Cost ~ 7 M €

Data rates in AGATA @ 50 kHz singles

100 B/ev

5 MB/s

200 MB/s

1.5 ··· 7.5 kB/ev

~ 100 MB/s

36+1 ‡ 7.5 kB/event

380 MB/s

~ 200 B/segment~ 10 MB/s

100 Ms/s

14 bits

Pulse Shape Analysis

Event Builder

g-ray Tracking

HL-Trigger, Storage On Line Analysis

< 100 MB/s

SEGMENT

GLOBAL

Energy & Classification

5*n‡ max. 900 MB/s

save 600 ns ofpulse rise time

E, t, x, y, z,...DETECTOR

LL-Trigger

Suppression /Compression

ADC

Preprocessing+-

GL-Trigger

GL-Trigger to reduce event rate to whatever value PSA will be able to manage

Structure of Electronics and Data Processing

Global Level

Local Level

SynchronousDigital Preamplifier

Buffered

GL Trigger

Digitisers

PreprocessPSA

Ev. Build. TrackingControl,Storage

Preamp.

Com.Clock

AGATA Electronics and Data Processing

• Logical structure is layered:– Preamplifiers

– Digitizers

– Segment level processing– Energy, (Time)

– Detector level processing– Trigger, Time, PSA

– Global level processing– Event builder, g-ray tracking, Software trigger, Storage

• Architecture should reflect this fact

Digital Preamplifier

AGATA Electronics and Data Processing• Fully Synchronous System:

– Central (100 MHz) clock– Time stamp (48 bit clock counter) to tag samples– Hierarchical distribution of clock and tag

‡ detectors (clock & tag) ‡ segments (clock)‡ ancillary detectors (clock & tag)

• Based on (180) independent detector systems deriving their local trigger from Ge common contact

• Total data readout and software trigger when possible• Global Level hardware trigger when needed• Data Processing on dedicated HW and farms of PCs• Our goal is to hide the complexity of the data

processing and provide the users of AGATA with“classical” data sets

Structure of WG and tasks of teams

• T1: Global Clock and Trigger– Definition and implementation. Strongly coupled with

LLP (and ancillary detectors)

• T2: DAQ “HW”– Farm Infrastructure (+ farms for PSA?); Event Builder

• T3: DAQ “SW”– Run Control; Data Storage

• T4: Conceptual Design– MC simulations and choice of configuration

• T5: g-ray Tracking– Algorithms and On-Line Tracking

Time scale of developments (to be updated at the end of this meeting)

• T1: One year for first prototypes.Clock (and Trigger) needed to test LPP electronics

• T2: Start working on event builder with simulateddata. GLP farm not needed before 2-3 years

• T3: Start working on GUI, in conjunction with slowcontrol. Track technology for data storage

• T4: Now. Orders of asymmetric capsules, foreseen tostart in 2004, depend on selected geometry,

• T5: Couple of years. Real data will not be availablesoon. Time to improve algorithms.

Scope of the meeting• Exchange of ideas among the experts• Definition of teams and identification of possible

team leaders. The final organization will be decidedat next AMB meeting

• Concrete plans on how to proceed should bepresented to the AGATA community at the first

AGATA weekSeptember 15-19Padova/Legnaro

Program of the meeting Thursday 15th

Global Clock and Trigger:M.Bellato

L.Lazarus

P.Medina

L.Olivier

Data Acquisition:J.Cresswell

X.Grave

G.Maron

Friday 16th

Conceptual Design:G.Duchêne

E.Farnea

K.Hauschild

g-ray Tracking:G.Duchêne

F.Camera

A.Lopez Martens

C.Rossi Alvarez