Download - AGATA detector characterization : scanning setup at Orsay Concept of the Orsay scanning system
AGATA detector characterization: scanning setup at Orsay
Concept of the Orsay scanning system (last Agata week – K. Hauschild)
Status and plans
A. Lopez-Martens & A Korichi for the Orsay (IPN-CSNSM) Group
LN2
XYZ table
Ge segment andanode signals / NaI
500 MBq
Digital [TNT]/Analogueelectronics
Industrial PC
ScanningScanning
PC Linux [NARVAL]+ SDLT + 1.3 TB NAS
NaI
Linux
Experimental hall at the CSNSMExperimental hall at the CSNSMExperimental hall at the CSNSMExperimental hall at the CSNSM
EM shielded and air conditionned Area & EMC control
Concept : xyz Table + TOHR (Orsay)
Digitalelectronics
Focal point
2r
F e
dd’
Positionning rods
Tungten sheet
Brace
•40 triangular–shaped 200m thick W-plates •Plate separation : 200 m•200 m diameter holes on a hexagonal lattice
Agata detector : movmentXy movmentTohr : z movment Coincidences : 6 NaI detectors
Intense Source : 15 mCi
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 : 400/h @front face and 10/h @the back of the detector
TOHR NaI Gamma-beam
AGATA Ge
Compton scatter
Collimated 137Cs delivered : 477 MBq -> 2 kHz
After a heavy safety procedure (A. Lopez-Martens) we are allowed to use the source
Security trolleySecurity lock down
More security
G4 simulations have shown that TOHR collimator are too thin (K. Hauschild)
Double up the thikness
Recalibration of each TOHR module (focal point) Done (J. Robin & F. Le Blanc)
Mechanics ready (P. Pariset)A conventional XY table, the motorised rotational plate to turn the AGATA detector and the stepping motor for the z-translation of TOHR : delivered Programming Software for the different movements : done (E. Legay, N. Dosme and X. Grave)
VME interface ACQ-CAMC
__________________
CAMAC Analogique
___________________
TNT2 + trigger___________________
HT et BT détecteur___________________
ATCA AGATA
The analog electronics: 3x(16 channels) CADC cards developped and tested VME interface ACQ- CAMAC : under way(D. Linget, E. Legay, S. Leboutelier, X. Grave)
Electronics housing :Spécial temperature
Controlled rack
AP1 Infrastructure : ready
Analogue electronics (48ch) and DAQ (Narval) ready
Digital electronics : 10 TNT2 cards (Gabriela) are under tests at Strasbourg
Commmissioning of the set-up with a real Agata detectorPossible from April 2006
Orsay set-up : Ready to scan summer 2006
Summary
VME interface ACQ-CAMC
__________________
CAMAC Analogique
___________________
TNT2 + trigger___________________
HT et BT détecteur___________________
ATCA AGATA (plus tard)
PC-Linux ACQ
__________________PC table xy,
Commande moteur__________________
LN2-Auto_
Status : future prospects
Manque ACQ et électronique analogique
TNT2 cards under tests at iresReady in few weeks
Commmissioning of the set-up with a real agata detectorApril 2006 Ready to scan summer 2006
Liste des gens
Collimated 137Cs source
‘security’ trolley
‘security’ lock down
more ‘security’