1. Simulations of the AGATA Response to Relativistic Heavy Ions Beams
Pavel Detistov
University of Sofia “St Kliment Ohridski”

2. σatomic interactions ~ 10000 times σnuclear
The Problem
Passage of charged ions through matter involves interaction with material’s atomic shells.
σatomic interactions ~ times σnuclear
The main processes are defined as:
Radiative Electron Capture (REC) – K and L shells are considered
Primary Bremsstrahlung
Secondary Bremsstrahlung

3. Simulation model is based on GEANT4 toolkit
Solution
Simulation model is based on GEANT4 toolkit
Creation of new process classes in order to represent different processes:
G4ionRadioactiveElectronCaptureK (& L)
G4ionPrimaryBremsstrahlung
SecondaryBremsstrahlung

4. WHAT IS AGATA? High efficiency 4π detector array
Advanced GAmma-ray Tracking Array
High efficiency 4π detector array
180 detectors grouped in 60 equal triple clusters

5. RISING @ GSI Array of ex-EUROBALL cluster detectors Three campaigns:
Fast Beam Campaign
Stopped Beam Campaign
gRising Campaign

6. Stopped beam campaign Rising Stopped beam Agata Stopped beam 535 keV
(7-)
( 4+)
( 2+) 0+
280 μs
202Pt
202Pt
535 keV
719 keV
(7-)
( 4+)
( 2+) 0+
280 μs

7. Rising for 202Pt

10. Fast Beam campaign Rising Fast Beam Campaign
Agata Fast beam configuration 1
Agata Fast beam configuration 2

11. Spectra for 37Ca experiment
9Be with AMeV
700 mg/cm2 Be Target
36Ca: → 0g.s.+
with E = 3015 keV
Data are taken from P.Doornenbal’s GSI

12. AGATA benefits from its higher efficiency compared to RISING array
Conclusions
AGATA benefits from its higher efficiency compared to RISING array
Due to the high multiplicity (~103)of the background tracking algorithms should be able to deal with that!

13. Thank you for your attention!