status of the agata project n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Status of the AGATA project PowerPoint Presentation
Download Presentation
Status of the AGATA project

Loading in 2 Seconds...

play fullscreen
1 / 20

Status of the AGATA project - PowerPoint PPT Presentation


  • 83 Views
  • Uploaded on

Status of the AGATA project. Recent developments Milestones and deliverables for 2006 Plans for 2007/08. Main features of AGATA Efficiency : 40% (M  =1) 25% (M  =30) today’s arrays ~ 10% (gain ~4) 5% (gain ~1000) Peak/Total: 55% (M  =1) 45% (M  =30)

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Status of the AGATA project' - walker-mitchell


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
status of the agata project
Status of the AGATA project
  • Recent developments
  • Milestones and deliverables for 2006
  • Plans for 2007/08

Main features of AGATA

Efficiency: 40% (M=1) 25% (M =30)

today’s arrays ~10% (gain ~4) 5% (gain ~1000)

Peak/Total: 55% (M=1) 45% (M=30)

today ~55% 40%

Angular Resolution:~1º 

FWHM (1 MeV, v/c=50%) ~ 6 keV !!!

today ~40 keV

Rates: 3 MHz (M=1) 300 kHz (M=30)

today 1 MHz 20 kHz

  • 180 large volume 36-fold segmented Ge crystalsin 60 triple-clusters
  • Digital electronics and sophisticated Pulse Shape Analysis algorithms
  • Operation of Ge detectors in position sensitive mode  -ray tracking

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

ingredients of g ray tracking
Ingredients of g-ray Tracking

4

1

Identified

interaction points

Reconstruction of “tracks”

e.g. by evaluation ofpermutations

of interaction points

Highly segmented

HPGe detectors

(x,y,z,E,t)i

g

·

·

Pulse Shape Analysisto decomposerecorded waves

·

·

2

3

Digital electronics

to record and process segment signals

Spectroscopic studies

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

agata symmetric prototypes
AGATA symmetric prototypes

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

acceptance tests on prototypes

Mean(1.3MeV)=1.99keV

FWHM at 1.3MeV

FWHM at 60keV

Mean(60keV)=1.14keV

Acceptance tests on prototypes

IKP Cologne 001

Core FWHM:

at 1.3MeV : 2.10keV

at 122keV : 1.20keV

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

acceptance tests on prototypes1
Acceptance tests on prototypes

GSI 002

Core FWHM:

at 1.3MeV : 2.08keV

at 122keV : 1.19keV

Mean(1.3MeV)=1.98keV

FWHM at 1.3MeV

FWHM at 60keV

Mean(60keV)=1.07keV

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

acceptance tests on prototypes2
Acceptance tests on prototypes

Core FWHM:

at 1.3MeV : 2.13keV

at 122keV : 1.10keV

INFN Padova 003

Mean(1.3MeV)=2.01keV

FWHM at 1.3MeV

FWHM at 60keV

Mean(60keV)=1.03keV

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

first agata triple module
First AGATA triple module

Goal: Validation of pulse-shape

analysis codes under realistic

experimental conditions

Univ. Cologne August 2005

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

planning for agata detectors in 2006
Planning for AGATA detectors in 2006
  • Three symmetric detectors are being mounted in test cryostats for characterisation (3D scanning):

cryostat 1: scanning in Liverpool ongoing

cryostat 2: delivery to Orsay in April

cryostat 3: delivery to GSI in June

  • Two first asymmetricGe crystals do not meet specifications and were returned to Canberra-Eurisys for repair.
  • First detector from “new batch” expected in April.
  • If problems have been solved by Canberra-Eurysis, first asymmetric triple ready by the end of 2006

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

electronics and daq developments

GL Trigger

Detector

preamp.

Digitisers

Analogue

Ancillary 3.

Clock

100 MHz

T-Stamp

Up to 180detectors

Ancillary 1.

Core +

36 seg.

PSA

Preprocessing

Synchronous

EventBuilder

Control,

Storage…

Tracking

Ancillary 2.

Buffered

  • Handling of ancillary detectors
  • interface to GTS via mezzanine
  • merge time-stamped data into event builder
  • prompt local trigger available from digitisers
Electronics and DAQ developments

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

digitiser module 36 1 channels 100 mhz 14 bits strasbourg daresbury liverpool
Digitiser module 36+1 channels, 100 MhZ, 14 bits(Strasbourg - Daresbury – Liverpool)
  • Mounted close to the Detector 5-10 m
  • Power Dissipation around 400W
  • Water Cooling

2 boxes per crystal

Prototype Segment Board

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

pre processing modules e t hits orsay daresbury

3 X 2 Carriers

1 cluster

3 X 2 Carriers

1 cluster

13

11

9

7

5

3

1

2

15

Pre-processing modules (E,T, hits, …) (Orsay – Daresbury)

ATCA standard :

“full mesh” communication

with Gbit Ethernet or

PCIexpress switches

1,5U

4

6

8

10

12

14

16

8U

14U

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

4,5U

21’’

Segment preprocessing mezzanine for 6 channels

1 ATCA crate for 2 clusters(6 Ge crystals, 222 channels)

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

global trigger system gts padova legnaro
Global Trigger System (GTS) (Padova – Legnaro)

GTS Pre-Proc. mezzanine

One per detector

(also for ancillaries)

Trigger processor layout

For up to 12 detectors

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

status of electronics and daq prototypes
Status of electronics and DAQ prototypes
  • Digitisers Q1 2006
  • Pre-processing mezzanines Q1 2006
  • ATCA carrier card Q1 2006
  • GTS mezzanine 1 (Virtex2) Q2 2005
  • “ mezzanine 2 (Virtex4) Q2 2006
  • All prototypes tested by Summer 2006
  • Full processing chain, includingprototype of DAQ tested by Autumn 2006
  • Any needed reprocessing Autumn 2006
  • Production and start delivery Q4 2006
  • Test of a triple-cluster Q1-Q2 2007
  • Ready for Demonstrator by fall 2007

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

pulse shape analysis developments
Pulse shape analysis developments
  • Determine the number of interactions
    • Neural Net Algorithm (IPN Orsay)
      • Recognizes ~86% of single hits
      • Close to 100% of double hits with distance > ~10 mm
    • Use specific PSA algorithm depending on number of interactions
  • Several PSA algorithms under development:
    • Wavelet based grid search (GSI)
    • Matrix inversion algorithm (IPN Orsay)
      • Only code to treat full crystal “at once”
      • Very good results for simple events (D ~ 1-3mm, typical time 1ms)
      • Still problematic for multiple adjacent interactions
    • Particle Swarm search (TU München)
      • So far only single hits per segment
      • Hit in single segment: ~300ms, mean distance 1.7 mm (front), 3.5 mm (back)
      • Hits in two segments: <3 ms, distance 3 – 4.6 mm
    • PSA has been solved for certain event classes,

e.g. single and multiple hits in the detector, but not in the same segment

    • 5 mm average position resolution for 600keV g-rays
  • Implementation and testing in “real” hardware is ongoing

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

status of pulse shape analysis
Status of Pulse shape analysis
  • Example of the mean distance (in mm) of reconstructed position from real position
  • in front segment
  • simulated signals
  • Similar results from

other PSA codes

M. Schlarb et al. (TUM, 2006)

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

procedure of gamma tracking
Procedure of Gamma tracking

~ 100 keV ~1 MeV ~ 10 MeV -ray energy

Photoelectric Compton Scattering Pair Production

Isolated hits Angle/Energy Pattern of hits

Probability of E1st = E – 2 mc2

interaction depth

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

algorithm development and optimisation
Algorithm development and optimisation

Simulation of PSA:

packing, smearing,

energy threshold

(ei,xi,yi,zi)

(e’k,e’k x’k,x’k

y’k,y’k z’k,z’k)

Tracking code

Simulation of interactions

of M photons in Agata

(with Agata Geant4 code)

(Ej,j,j) : incident photon energies and emission directions

(and scattering directions for polarisation measurements)

Data analysis

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

status of gamma ray tracking
Status of gamma-ray tracking
  • Efficient forward tracking algorithms are ready:
  • Effect of neutrons has been investigated

eph reduced by ~1%/neutron

  • Codes have been optimised for speed and

specifications for the demonstrator have been met :

0.1 – 3.5 ms/evt for Mg=1 -30 (on 1 Opteron 1.7 GHz CPU)

  • FT code currently being implemented into the DAQ

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

status of the agata project1
Status of the AGATA project
  • Recent developments
    • General discussion at the next AGATA week: Liverpool, June 6-9
    • Characterising the first prototype Ge detectors
    • Testing the first electronics and DAQ prototype boards
  • Milestones and deliverables for 2006
    • Ge detector prototype characterized (06/06)
      • o.k., but will use symmetric detector due to delay in delivery
    • Pulse-shape analysis algorithms optimised (06/06)
      • Benchmark will be achieved, but will be ongoing
    • Gamma-ray tracking algorithms optimised (06/06)
      • Benchmark will be achieved, but will be ongoing
    • Electronics and DAQ prototypes (06/06)
      • Prototype local level processing electronics and specific data acquisition hardware:Delivery on schedule
  • Ready for Demonstrator by fall 2007

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

planning eurons and beyond
Planning (EURONS and beyond)
  • Demonstrator commissioning at LNL: second half of 2007
  • First physics campaign at LNL in 2008

further campaigns (from 2009) at GANIL, GSI, ILL, …

  • LoI for construction phase signed in 2005

to allow bids for new funds from 2006 (D, …)

  • MoU for AGATA construction ready in 2007
  • Start construction in 2008  1p in possible in 2011
  • Support in FP7 as an independent RI (I3-TNA, CNI, …)

EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006