AGATA ancillary detectors and ancillary detector integration group

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AGATA The Advanced Gamma Ray Tracking Array
Ancillary Detector and Integration W.G.
Status of the Working Group and Tasks A.Gadea
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• Purpose coordination of the use and integration
  of ancillary devices in AGATA.
• Demonstrator phase
• Identification of existing ancillary devices
  necessary to demonstrate the feasibility of using
  a tracking array in different experimental
  conditions.
• Construction of the necessary electronics to
  guarantee the correct coupling of the ancillary
  and AGATA Demonstrator electronics.
• Coordinate the ancillary devices mechanical
  integration
• Evaluate the impact of the ancillary detector in
  the AGATA performance.

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• TASKS
• Ancillary detectors for the key experiments and
  
• AGATA demonstrator tests. (N.Redon)
• Electronics and data acquisition integration.
• (Ch.Theisen)
• Ancillary detector impact on the AGATA
  performances. (No chairman)
• Mechanic integration of ancillary detectors in
• AGATA. (No chairman)

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• MEETINGS OF THE W.G.
• Start meeting May 16th-17th 2003
• Definition of tasks
• AGATA Week September 15th-19th 2003
• First concepts of integration of the electronics
• Impact of ancillary devices on AGATA
• W.G. Meeting June 22th 2004
• Interaction with the AGATA GTS (latency!)
• Ancillary devices for the Demonstrator phase
• Electronics and data acquisition TASK meeting
• 17th November 2004
• Starting the specifications for an ancillary
  electronics GTS interface.

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• TASK STATUS AND LINKS
• Ancillary detectors for the key experiments.
  (N.Redon).
• Link with DATA ANALYSIS W.G. Key experiments
  task
• Identification of Facilities and ancillary
  instruments to
• prove the AGATA Demonstrator.
• Document on demonstration scheduling, done in
• collaboration with the key experiments task,
  will be
• available soon .
• Meeting Wednesday 1400 (N.Redon/E.Farnea)

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Scheduling for the AGATA modules and Demonstrator
tests

• Test of symmetric capsules 2004-2005
• In beam test of the symmetric cluster June 2005?
  
• (if 108 sampling ADC channels are
  available)
• Test in different labs of the symmetric and
  asymmetric capsules 2005-2006
• Demonstration campaigns Starting at end 2006-
  early 2007
• Debugging the full/partial Demonstrator
• Low v/c (lt0.1) beam demonstration campaign
• Medium v/c (0.3) beam demonstration campaign
• High v/c (gt0.3) beam demonstration campaign
• Radioactive beams test (background conditions)
• Tagging demonstration campaign

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Proposed Demonstration sites

• GSI Demonstrator at FRS
• LNL Demonstrator PRISMA
• GANIL Demonstrator VAMOS (and may be with SPEG)
• JYFL Demonstrator RITU
• IKP KÖLN Demonstrator ancillaries

and devices

• LUSIA Lund Si-strip detectors
• Recoil filter detector (RFD)
• Neutron Wall
• The CUP detector

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• TASK STATUS AND LINKS
• Electronics and data acquisition integration .
  (Ch.Theisen)
• Link with Data Processing W.G. GTS task and DAQ
  
• task.
• Document on specification of the Ancillary GTS
• interface (draft) distributed
• Team engineers from Krakow, GANIL, Daresbury,
• Padova, working on the specifications and
• electronic design
• Technical Ancillary-GTS Meeting Tuesday 1400
  (Ch.Theisen)

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VME GTS Interface schematic block diagram
(Trigger input etc)
standard TDR interfacing
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Specifications

• Backward compatibility with VME/VXI based ADC and
  readout fornt ends
• Full compatibility with the AGATA GTS mezzanine
• It will work with the Trigger-request / Trigger
  acceptance protocol
• Will provide the interfacing with TDR systems
  (required for tagging setups)

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• TASK STATUS AND LINKS
• Ancillary detector impact on AGATA performances.
  (No chairman)
• Link with DATA ANALYSIS W.G. simulation of Key
• experiments task
• Impact of the different ancillary instrument into
  the
• AGATA performances (only done for few cases).
• See contribution of E.Farnea on Wednesday
  morning simulation of the impact of EUCLIDES

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• TASK STATUS AND LINKS
• Mechanical integration of ancillary detectors and
  devices . (No chairman)
• Link with Infrastructure W.G.
• Coordination required due to the start of the
  test
• campaigns.
• Integration of ancillaries in early
  pre-Demonstrator
• campaigns.

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(No Transcript)
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Experimental activity proposal
key-experiments ancillary devices
teams

• Binary Reactions (Coulomb excitation,
  quasi-elastic reactions, etc...)
• Feasibility of tracking with Doppler corrections
  for v/c lt 0.1
• Large scattering angle for the products
• Reconstruction of low multiplicity "simple"
  spectra.
• Reactions close to the Coulomb barrier
  (Fusion-Evaporation reactions / Deep Inelastic
  Collisions)
• Tracking with 0 degree recoils
  (Fusion-Evaporation reactions).
• Tracking with high multiplicity and large
  scattering angle for the products (Deep
  Inelastic)
• High spin, reconstruction of high multiplicity
  spectra.
• GDR and high energy gamma detection
  (Fusion-evaporation at the limits of angular
  momentum).
• Tracking efficiency for high energy gammas
• Explore the reconstruction on non-Compton
  processes (pair production)
• Medium and high v/c reactions with stable
  (knock-out, fragmentation and relativistic
  Coulomb excitation)
• Feasibility of tracking with Doppler corrections
  for v/c gtgt 0.1
• Low gamma multiplicity at large v/c (Coulomb
  excitation or knock-out)
• Large gamma multiplicity at large v/c
  (fragmentation)

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Experimental activity proposal
key-experiments ancillary devices
teams

• High intensity stable beams (tracking at extreme
  counting rates)
• Low multiplicity (Coulomb excitation,
  quasi-elestic collisions etc...)
• High multiplicity (Fusion-Evaporation reactions /
  Deep Inelastic Collisions)
• Proton-rich nuclides, medium spin, v/c0,
  (tracking with a compact array)
• RIB Close to the coulomb barrier
• Define the sensitivity limits of the array
• Explore the behaviour of the array under high
  radioactive background conditions
• Check the techniques for background reduction
• Low, medium and high v/c reactions with RIB's
• Define the sensitivity limits of the array
• Explore the behaviour of the array under high
  beam background conditions
• Check the high energy hadronic background effects
• b-decay and isomer decay studies.
• Effects of the de-localized annihilation of the
  positron (b decay).
• Effects of a large area gamma source.

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Low Energy reaction mechanisms

• Coulomb excitation (Coulex) and Inelastic
  scattering.
• Transfer and quasi-elastic processes.
• Multi-nucleon transfer.
• Deep Inelastic Collisions.
• Quasi-fusion reactions.
• Fusion evaporation.
• Fusion-fission.

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High energy reaction mechanisms
Relativistic (single step) Coulomb
excitation Knockout reactions Fragmentation
reactions

• Cross sections
• up to1 barn for Coulex (large Z nuclei)
• tens of mbarn for 1 nucleon knockout,
• down to few mb for 2 nucleons knockout.