1. Detector characterization overview of the AGATA scanning tables
Dr Andy Boston

2. AGATA PSA Implementation
Architecture
Algorithms
Implementation
ADL
Experimental basis
Performance

3. AGATA collaboration Scanning tables
Liverpool
Conventional singles and Coincidence
used to commission PSCS
validate other tables
Orsay
Singles and Coincidence
GSI
IPHC Strasbourg scanning table based on the PSCS technique
Salamanca Scanning table (SALSA)
511keV coincidence and PSCS

4. Liverpool Detector characterisation
Singles
Coincidence scanning
Very precise and accurate
Can be very slow
PSCS methodology

5. Coincidence scan vs basis

6. Concept of the scanning set-up at Orsay
Agata detector : q movement Tohr : z movement
Xy movement Coincidences : 6 NaI detectors
Digital
electronics
Focal point 2r F e d d’
Positionning rods
Tungten sheet
Brace
40 triangular–shaped 200 mm thick W-plates
Plate separation : 200 mm
200 mm diameter holes on a hexagonal lattice
Intense Source : 500 MBq
Volume /scan point : 2 x 2 x 2-
3 mm3 : 3D Scan of the whole detector
From simulations, the number of single interaction Compton scatter events at a given position :
face, third and back of the detector

7. Pulse Shape Comparison Scan (PSCS)
F. Crespi NIMA (2008)

8. IPHC Strasbourg scanning table
M. Ginsz PhD Thesis (2015)

9. PSCS validation and experimental basis
M. Ginsz
PhD Thesis
(2015)

10. SALSA concept 256-fold pixelated γ camera AGATA detector to scan
efe
256-fold pixelated γ camera
AGATA detector to scan
22Na β+ source

11. Summary Three symmetric AGATA detectors &
Three asymmetric AGATA detectors have been characterised
The experimental measurements have informed the calculations
ADL is used to generate a simulated basis
PSCS is used to generate an experimental basis
Limitations on detector availability to perform conventional scans
The opportunities for an experimental basis?
See -> Damian’s talk

12. Detector characterization overview of the AGATA scanning tables
Dr Andy Boston