1. PRESORT OF THE DATA OF THE COLOGNE TEST EXPERIMENT ● Quality and integrity of data ● Detector numbering and positions ● Calibrations and gain stability ● Reactions channels identification

2. The experiment Main characteristics of the setup BEAM 48 Ti100 MeV TARGET 48 Ti + 2 H220 μg/cm 2 Si detector thickness300 μm segmentatio n 32 rings, 64 sectors Absorberthickness16 μm (Al) AGATA symmetric triple-cluster

3. What to check ● Quality and integrity of data – Sector energies mostly missing – Some segments are in short circuit and other are missing ● Detector numbering and positions ● Calibrations and gain stability ● Reactions channels as expected ?

4. Quality and integrity of data validation Silicon detector fires with almost all his sectors and rings every event The time of a lot of channels is in overflow We can ask for a validation with an autocoincidence After validation the multiplicity of sectors and rings is (1, 1) as expected for the reaction TDC of silicon detector

5. Quality and integrity of data real gate validation TDC of silicon detector TDC of germanium detector

6. Quality and integrity of data With gate on sector energy Without gate on sector energy

7. Quality and integrity of data 3 segments in short circuit 2 segments in short circuit Some segments missing/low statistics

8. What to check ● Quality and integrity of data ● Detector numbering and positions – Ring numbering – Sector numbering – Silicon detector position ● Calibrations and gain stability ● Reactions channels as expected?

9. Geometry – ring numbering Counts on the rings ~ ring solid angle Tape number 19: alpha source ● Inverse numbering of the rings ● The distance between the source and the silicon detector is 34 mm (what about the target?)

10. Geometry – sector numbering Depends on the angle of the firing sector 49 Ti: 1381 keV 48 Ti: 983 keV The Doppler correction depends also on: the mass of the scatterer nucleus the reaction mechanism

11. Geometry – sector numbering x y 12.3 ± 0.5 deg 0 8 16 24 32 40 48 56 63 FRONT view (from the target) Center of the cluster in the yz plane Ge detectors E γ – sector #

12. Geometry – silicon detector position BEAM IS OFF AXIS DISTANCE: 2.67 ± 0.01 mm DIRECTION: 100.4 ± 0.1 deg (~ direction of sector 19) Center of silicon detector Beam position SI DETECTOR IS NOT PERPENDICULAR TO BEAM ANGLE (θ): 4.50 ± 0.02 deg DIRECTION (φ): 100.4 ± 0.1 deg (~ direction of sector 19) OR beam Si det Target R int = 16.5 mmd = 2.7 mm θ = 4.5 deg ring # – sector #

13. What to check ● Quality and integrity of data ● Detector numbering and positions ● Calibrations and gain stability – DGF stability ● Reactions channels as expected?

14. Electronics stability DGF gain stability: ● rough calibration using 60 Co sources ● fine recalibration using 511 keV peak during run with beam

15. What to check ● Quality and integrity of data ● Calibrations and gain stability ● Detector numbering and positions ● Reactions channels as expected? – (d,p) 49 Ti – (d,d’) and (d,pn) 48 Ti – Other reaction channels ?

16. Channel identification: gamma spectrum Gammas from 49 Ti

17. Channel identification: (d,p) through direct reaction Q value of (d,p) reaction: 5.92 MeV Excitation energy: 6.2 MeV keV

18. Channel identification: (d,p) through fusion evaporation PACE calculation: proton spectrum in CM PACE Coulomb barrier: 3.95 MeV Proton with 4.5 MeV in CM 4.5 3.5 5.5 6.5

19. Channel identification: gamma spectrum Gammas from 49 Ti and 48 Ti

20. Channel identification: (d,d') direct and (d, pn) fusion evaporation (d,d’) direct (d,pn) fusion-evaporation (?) Gate on gamma energy 983 keV

21. Channel identification: other reaction channels ? Gate on gamma energy 983 keV Protons and deuterons can not deposit so much energy Is it noise? Why only at small angles?

22. 48 Ti 2H2H Channel identification: other reaction channels ?

23. 16 O 12 C Channel identification: other reaction channels ?

24. 12 C 14 N 16 O Channel identification: other reaction channels ? Absorber thickness: 16 µm ABSORBERNUCLEUS 6 µm 48 Ti 10 µm 27 Al 16 µm 16 O 18 µm 14 N 21 µm 12 C logbook

25. Channel identification: other reaction channels ?

27. Low energy High energy ? Time correlation between high and low energy events in si-detector Concentration of impurities increases with time High concentration of low energy events in tape 15 and 16 not understood Channel identification: other reaction channels ? new target (chamber opened) changed Si-HV and threshold

28. Overflow is expected here but there is not! Channel identification: other reaction channels ?

29. Overflow is expected here but there is not! This region has the right: deflection angles gamma spectrum statistical dependence on time Doppler correction Channel identification: other reaction channels ?

30. Overflow is expected here but there is not! This region has the right: deflection angles gamma spectrum statistical dependence on time Doppler correction Channel identification: other reaction channels ? This can mean that electronics did not work the way we expected

31. Channel identification: other coulex reactions This region has the right: deflection angles gamma spectrum statistical dependence on time Doppler correction This can mean that electronics did not work the way we expected

32. Channel identification: statistics and selection mechanis m Gamma energy Energy in silicon detector counts (d,p) direct 1381 keV 750k (d,p)fus-evap 1381 keV (d,d’)direct983 keV< 30k (d,pn)fus-evap983 keV< 15k (HI, HI’)coulex983 keVE > 8 MeV80k (HI, HI’)coulex983 keV2 < E < 8 MeV~ 100k (HI, HI’)coulex983 keV0.3 < E < 2 MeV 140k mixed 220k counts

33. Conclusion: what to analyse ? 16 O 12 C Experiment designed for d( 47 Ti, 48 Ti)p direct reaction Beam was 48 Ti No direct reaction on target We still have a nice direct reaction on contaminant(s) ! BUT Smaller statistics Use of background

35. Quality and integrity of data

36. Quality and integrity of data Data structure Sector #, Energy, Time … Ring #, Energy, Time … Germanium #, Energy, Time … Segment #, Trace, Energy …. Silicon detector Germanium detector VME modules DGF modules