AGATA: Advanced Gamma Tracking Array

Presented byAndres Gadea

INFN-LNL

AGATA WEEK SUMMARY AND STATUS OF THE PROJECT

Many Apologies by the Project Manager John Simpson

6660 high-resolution digital electronics channels High throughput DAQPulse Shape Analysis position sensitive operation modeγ-ray tracking algorithms to achieve maximum efficiencyCoupling to ancillary detectors for added selectivity

AGATAAGATA(Advanced GAmma Tracking Array)

180 hexagonal crystals 3 shapes60 triple-clusters all equal

Inner radius (Ge) 23.5 cmAmount of germanium 362 kgSolid angle coverage 82 %36-fold segmentation 6480 segmentsSingles rate ~50 kHzEfficiency: 43% (Mγ=1) 28% (Mγ=30)Peak/Total: 58% (Mγ=1) 49% (Mγ=30)

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-channelsEff. 3 – 8 % @ Mγ = 1Eff. 2 – 4 % @ Mγ = 30

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

Cost ~ 6 M € Capital

The AGATA CollaborationMemorandum of Understanding 2003-07: R&D phase

• Bulgaria: Univ. SofiaDenmark: NBI Copenhagen

• Finland: Univ. JyväskyläFrance: GANIL Caen, IPN Lyon, CSNSM Orsay, IPN Orsay,

CEA-DSM-DAPNIA Saclay, IPHC StrasbourgGermany: HMI Berlin, Univ. Bonn, GSI Darmstadt, TU Darmstadt,

FZ Jülich, Univ. zu Köln, LMU München, TU MünchenHungary: ATOMKI DebrecenItaly: INFN-LNL, INFN and Univ. Padova, Milano, Firenze,

Genova, Napoli, Poland: NINP and IFJ Krakow, SINS Swierk, HIL & IEP WarsawRomania: NIPNE & PU BucharestSweden: Univ. Göteborg, Lund Univ., KTH Stockholm, Uppsala Univ.Turkey: Univ. Ankara, Univ. IstanbulUK: Univ. Brighton, CLRC Daresbury, Univ. Keele, Univ. Liverpool,

Univ. Manchester, Univ. Paisley, Univ. Surrey, Univ. York

The AGATA OrganisationThe AGATA Organisation

AGATA Management BoardJ.Simpson (Project Manager)

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

AGATA Steering Committee

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

Chairperson: W.Korten (and EURONS) Vice Chairperson: P.J. Nolan

AGATA Working Groups

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.Strachan

DigitisationP.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-processingI.Lazarus

Run Control & GUI

G.Maron

PreamplifiersA.Pullia

Simulation andData Analysis

J.Nyberg

Ancillary detectors

and integrationA.Gadea

Design andInfrastructureG. Duchêne

Front-endProcessingD.Bazzacco

Detector moduleP.Reiter

DataAcquisitionCh. Theisen

Some results from the present AGATA Week

Last detectors failed CATdue to microphonics

Good News from the Detector Group

glued core feed-throughStrong microphonics withoutglued core contact (Amplitude > 1 V)(C004)

After gluing core feed-throughno microphonics with glued core contact

FWHM on core signal of C004:2.21 keV @ 1.3 MeVA004:2.24 keV @ 1.3 MeV

Source of microphonics located in detector capsulenot in the cryostat

Andreas Wiens – IKP Cologne

C004

Status of detectors

11 Detectors available if microphonics problem solved

3 encapsulated Ge crystals in one cryostat111 preamplifiers with cold FETLN2 dewar, 3 litre, cooling power ~8 W

AGATA triple-detector module

Hardware and Electronics:

3 Cryostats almost completed

2 Cryostats in production

First Triple Cluster being assembled in Cologne

Preamplifier -Time Over Threshold

“reset” mode (by TOT technique)

“pulse-height” mode (by ADC)

Energy Resolution (fwhm)in pulse-height mode

Resolution (fwhm)in TOT reset mode

4.440 MeV (12C) 104 keV 2.34 % 104 keV 2.34 %

~5.6 MeV 10.5 keV 0.14 % 18.8 keV 0.34 %

~6.1 MeV 15.1 keV 0.17 % 17.1 keV 0.28 %

7.6312 MeV (Fe) 11 keV 0.14 %

7.6456 MeV (Fe) 11 keV 0.14 %

8.9984 MeV (Ni) 15 keV 0.17 % 18.9 keV 0.21 %

18.8 keV(29.4 keV

for the double-peak)

0.25 %(0.38 % for

the double-peak)

241Am+Be spectrum

Francesca Zocca - Milano

S002 vs S003

Liverpool:S002, S003 finished,Ready for asymmetric detectors

Orsay and GSI not yet operative

Detector Scanning and Signal Basis Validation

Scan data vs Jass

Scan data vs MGS

3D scan1714 positions

Pulse Shape Analysis - Status<Performance>Algorithms

Grid search (GS)

Matrix method (MM)

Particle Swarm Optimization (PSO)

Recursive Subtraction (RS)

Artificial Neural Network (NN)

(Wavelet Transformation)(Genetic Algorithm (GA))

Single interaction :

sigma < 2mm, (~1ms)

Double interaction (crystal):

sigma < 5 mm, (~2ms)

Double interaction (segment):

sigma < (3 - 8 mm) (~10ms)

N interactions:

not tested

Front end electronics• Digitizers for 18 detectors Patrice Medina

– IPHC Strasbourg, STFC Daresbury, Uni .Liverpool– Production done; 7 units ready

• Production and test of new pre-processing electronics• ATCA Carrier Marco Bellato

– INFN-Padova, IPN Orsay– 80 % tested

• Segment processing mezzanine Denis Linget– CSNSM Orsay– 90 % tested

• Integration test of Carrier with segment and GTS mezzanines done in Padova at the end of October

• Thanks to the effort of the working teams and to the injection of consistent amount of new man power.

Plan devised after Orsay AGATA week is ~OK

Digitiser in Production

• All the electronics boards manufactured• All mechanics components manufactured• 7 sets of Digitiser Modules assembled• 1 Digitiser delivered to Strasbourg• 4 Digitisers will be delivered end November

Excellent Performance:SNR average value 75.45 dB. ENOB average value 12.24 bits Static Power consumption: 240 W

First Production Prototype

The new ATCA Carrier

Delivered end July 20072 prototypes being tested in Padova

3 prototypes in tests since end July 07

The new segment mezzanine

General Schedule for 2008• Q1

– Reworked ATCA Carrier– Reworked Segment Mezzanines– New Core Mezzanine

• Q2– Electronics for one detector; VHDL revision -1– Start series production of all modules

• 36+ ATCA carriers IPN Orsay• 108+ Segment Mezz. CSNSM Orsay• 18+ Core Mezz. CSNSM Orsay• 30+ GTS mezzanines INFN Padova

• Q3– Electronics for one triple cluster; VHDL revision 0

• Q4– Phased delivery of final electronics

1 15 PSA FARM EB + TRACKING (Blades)

Storage Backbone (> 48 ports) GEthernetoptional

1 U pizzaboxes

Data Flow Backbone (> 48 ports) GEthernet

DS1 DS2 DS3

Cisco 6500Main LNL Switch

And Router

To WAN2 x Gbps

1 Gbps

2

SAN

disk serverSRM

Storage Resource ManagerGrid data mover

SRM should have a public IP

DAQ Services

Run Control, Narval Services, GUI, Experiment Portal, etc.Some of these services could have a public IP

AGATA DAQ: General Layout at LegnaroTo

fron

t end

ele

ctro

nics

Agata Data Flow (ADF) Library

Frame = Key + data (input/output of algorithms)

LikelyTo change

VersionVers.

AgataKey (0,0): 4 bytes frame length

AgataKey (1,0): 8 bytes + message type

AgataKey (2,0): 12 bytes + event number

AgataKey (3,0): 20 bytes + timestamp

First release ready and tested on NarvalEncapsulation of data format details

• Some algorithms work only with the key part

• Frames could be composite or not(event builder, merger)

Zoom all

INP - Lyon

Detector Support System

Integrated control and monitoring system for: Low Voltage High VoltageLiquid Nitrogen

CEA Saclay and GSI

Construction and programming of the system and GUI ongoing

HV and LVPS AGATA modules

CEA Saclay and GSI

Design and Construction of the HV&LV power supply modules ongoing

AGATA Design and Construction

180 geometry definedConceptual design of 180 array doneSpecifications of infrastructure parts doneDesign of AGATA demonstrator for LNL doneFlanges manufacture done, support manufacture ongoingAssembly in LNL, 2008

Single FlangeManufacture

FLANGE PRODUCTION

Images of single flanges being manufactured at INFN – Padova,

Milano and LNL

5

Doppler correction capabilitiesAGATA

Demonstrator + PRISMA

INFN-Padova: Simulation of the AGATA Demonstrator- PRISMA setup

With the Demonstrator it will be possible to increase significantly the detection efficiency (with respect eg to

CLARA) while keeping a good quality of the spectra (essential point for the physics campaign).

Timescales for the AGATA demonstratorSix 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• Twelve asymmetric Ge crystals delivered by end 2007• 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

Status and Evolution

First physics campaign at LNL in 2009Next campaigns at GANIL then GSI

MoU for AGATA construction from 2008Aim 1π in possible in ~2011Rate of construction depends on production capability and financingStages of physics exploitation, facility development

AGATA web pageAGATA web page

http://http://www.gsi.de/agatawww.gsi.de/agata//

LNL November 2007 Talks from this AGATA week soon available at

http://agata.lnl.infn.it/AgataWeek2007/

Many thanks to everybody!

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