1. Status of PRT-INFN
the PRT-INFN group
Perugia, February 2017

2. Outline Summary of: Data analysis Results of the 1st test @ n_TOF
Calibration with g-ray n_TOF
Test with 62-MeV LNS
Data analysis
New GEANT4 simulation
Analysis procedure
Tentative flux
Cristian Massimi

3. Response to g flash g flash @ n_TOF Typical signal 100 MeV ~ 820 ns
(after g flash)
Det. 1
5 mm
1 GeV ~ 87 ns
Rise time ~ 2-3 ns
FWHM ~ 8 ns
g flash
1 GeV
500 MeV (200 ns)
Cristian Massimi

4. Response to g flash g flash @ n_TOF Typical signal 100 MeV ~ 820 ns
(after g flash)
Det. 1
5 mm
1 GeV ~ 87 ns
Rise time ~ 2-3 ns
FWHM ~ 8 ns
g flash
500 MeV (200 ns)
100 MeV
Cristian Massimi

5. @ n_TOF
Linearity
Area Vs Amplitude
Amplitude
Area

6. PRT coincidences C2H4 20° 3 cm 6 cm 6 cm y=DE1 y=DE3 x=DE2 x=DE4
@ n_TOF
PRT coincidences
C2H4
20°
protons
neutrons
3 cm
6 cm
6 cm
y=DE1
y=DE3
x=DE2
x=DE4
Cristian Massimi

7. PRT coincidences C2H4 30° 3 cm 6 cm 6 cm y=DE1 y=DE3 x=DE2 x=DE4
@ n_TOF
PRT coincidences
C2H4
neutrons
30°
protons
3 cm
6 cm
6 cm
y=DE1
y=DE3
x=DE2
x=DE4
Cristian Massimi

8. Calibration 1 Cs, Y, AmBe Scintillator 1 channels g-ray sources
@ n_TOF
Calibration 1
Scintillator 1
Cs, Y, AmBe
0.5 cm
g-ray sources
channels
Energy, MeV
Cristian Massimi

9. Calibration 1 Cs, Y, AmBe Scintillator 2 channels g-ray sources
@ n_TOF
Calibration 1
Scintillator 2
Cs, Y, AmBe
3.0 cm
g-ray sources
channels
Energy, MeV
Cristian Massimi

10. Calibration 1 Cs, Y, AmBe Scintillator 3 channels g-ray sources
@ n_TOF
Calibration 1
Scintillator 3
Cs, Y, AmBe
6.0 cm
g-ray sources
channels
Energy, MeV
Cristian Massimi

11. Calibration 1 Cs, Y, AmBe Scintillator 4 channels g-ray sources
@ n_TOF
Calibration 1
Scintillator 4
Cs, Y, AmBe
6.0 cm
g-ray sources
channels
Energy, MeV
Cristian Massimi

12. Calibration 1 Scintillator 4 channels Data g-ray sources MC @ n_TOF
6.0 cm
Scintillator 4
g-ray sources
Data MC
channels
Energy, MeV
Cristian Massimi

13. With aluminum degrader 5, 8, 10 mm
@ LNS
Calibration 2
Scintillator 1
0.5 cm
channels
PROTONS
Energy, MeV
LNS cyclotron
Ep= 62 MeV
With aluminum degrader 5, 8, 10 mm 
EP = 50, 42, 36, MeV
ΔE / E
Energy, MeV
Cristian Massimi

14. With aluminum degrader 5, 8, 10 mm
@ LNS
Calibration 2
Scintillator 2
3.0 cm
channels
PROTONS
Energy, MeV
LNS cyclotron
Ep= 62 MeV
With aluminum degrader 5, 8, 10 mm 
EP = 50, 42, 36, MeV
ΔE / E
Energy, MeV
Cristian Massimi

15. With aluminum degrader 5, 8, 10 mm
@ LNS
Calibration 2
Scintillator 3
6.0 cm
channels
PROTONS
Energy, MeV
LNS cyclotron
Ep= 62 MeV
With aluminum degrader 5, 8, 10 mm 
EP = 50, 42, 36, MeV
ΔE / E
Energy, MeV
Cristian Massimi

16. With aluminum degrader 5, 8, 10 mm
@ LNS
Calibration 2
Scintillator 4
6.0 cm
channels
PROTONS
Energy, MeV
LNS cyclotron
Ep= 62 MeV
With aluminum degrader 5, 8, 10 mm 
EP = 50, 42, 36, MeV
ΔE / E
Energy, MeV
Cristian Massimi

17. Resolution
Cristian Massimi

18. Resolution
Cristian Massimi

19. Different impact PMT SCIN 50-MeV Protons @ LNS
Cristian Massimi

20. Analysis
Cristian Massimi

21. GEANT 4 simulation 10-mm Polyethylene En = 80 MeV Sci1 + Sci2 ΔE -ΔE
+ resolution
+ coincidences
+ resolution
+ coincidences
Cristian Massimi

22. GEANT 4 simulation 5-mm Carbon En = 80 MeV Sci1 + Sci2 ΔE -ΔE ΔE -E
+ resolution
+ coincidences
+ resolution
+ coincidences
Cristian Massimi

23. GEANT 4 simulation Hydrogen En = 80 MeV Sci1 + Sci2 ΔE -ΔE ΔE -E
+ resolution
+ coincidences
+ resolution
+ coincidences
Cristian Massimi

24. GEANT 4 simulation 10-mm Polyethylene En = 80 MeV Sci1 + Sci2 ΔE -ΔE
+ resolution
+ coincidences
+ resolution
+ coincidences
Cristian Massimi

25. GEANT 4 simulation 2-mm Polyethylene En = 80 MeV Sci1 + Sci2 ΔE -ΔE
+ resolution
+ coincidences
+ resolution
+ coincidences
Cristian Massimi

26. GEANT 4 simulation En = 600 MeV 10-mm Poly Sci3 + Sci4 ΔE -E ΔE -ΔE
+ resolution
+ coincidences
+ resolution
+ coincidences
Cristian Massimi

27. GEANT 4 simulation En = 600 MeV 5-mm C Sci3 + Sci4 ΔE -E ΔE -ΔE
+ resolution
+ coincidences
+ resolution
+ coincidences
Cristian Massimi

28. GEANT 4 simulation En = 600 MeV Hydrogen Sci3 + Sci4 ΔE -E ΔE -ΔE
+ resolution
+ coincidences
+ resolution
+ coincidences
Cristian Massimi

29. GEANT 4 simulation En = 80 MeV poly
Cristian Massimi

30. Analysis En=40 MeV 2-mm Polyethylene GEANT4 Data MC y=DE1 Data Data MC
x=DE2
Cristian Massimi

31. Analysis En=60 MeV 2-mm Polyethylene GEANT4 Data MC Data Data MC
Cristian Massimi

32. Analysis En=80 MeV 2-mm Polyethylene GEANT4 Data MC Data Data MC
Cristian Massimi

33. Analysis 2-mm Polyethylene GEANT4 Data MC y=DE2 Data Data MC x=DE3
En=100 MeV
2-mm Polyethylene
GEANT4
Data MC
y=DE2
Data
Data MC
x=DE3
Cristian Massimi

34. Analysis 2-mm Polyethylene GEANT4 Data MC y=DE2 Data Data MC x=DE3
En=120 MeV
2-mm Polyethylene
GEANT4
Data MC
y=DE2
Data
Data MC
x=DE3
Cristian Massimi

35. Analysis 2-mm Polyethylene GEANT4 Data MC y=DE2 Data Data MC x=DE3
En=150 MeV
2-mm Polyethylene
GEANT4
Data MC
y=DE2
Data MC
Data
x=DE3
Cristian Massimi

36. Analysis 2-mm Polyethylene GEANT4 Data MC y=DE3 Data Data MC x=DE4
En=200 MeV
2-mm Polyethylene
GEANT4
Data MC
y=DE3
Data MC
Data
x=DE4
Cristian Massimi

37. Analysis 2-mm Polyethylene GEANT4 Data MC y=DE3 Data Data MC x=DE4
En=250 MeV
2-mm Polyethylene
GEANT4
Data MC
y=DE3
Data MC
Data
x=DE4
Cristian Massimi

38. Analysis En=40 MeV 10-mm Polyethylene GEANT4 Data MC y=DE1 Data Data
x=DE2
Cristian Massimi

39. Analysis En=60 MeV 10-mm Polyethylene GEANT4 Data MC Data Data MC
Cristian Massimi

40. Analysis En=80 MeV 10-mm Polyethylene GEANT4 Data MC Data Data MC
Cristian Massimi

41. Analysis 10-mm Polyethylene GEANT4 Data MC y=DE2 Data Data MC x=DE3
En=100 MeV
10-mm Polyethylene
GEANT4
Data MC
y=DE2
Data
Data MC
x=DE3
Cristian Massimi

42. Analysis 10-mm Polyethylene GEANT4 Data MC y=DE2 Data Data MC x=DE3
En=120 MeV
10-mm Polyethylene
GEANT4
Data MC
y=DE2
Data
Data MC
x=DE3
Cristian Massimi

43. Analysis 10-mm Polyethylene GEANT4 Data MC y=DE2 Data Data MC x=DE3
En=150 MeV
10-mm Polyethylene
GEANT4
Data MC
y=DE2
Data MC
Data
x=DE3
Cristian Massimi

44. Analysis 10-mm Polyethylene Data MC GEANT4 y=DE3 Data x=DE4 En=200 MeV
Cristian Massimi

45. Analysis 10-mm Polyethylene GEANT4 Data MC y=DE3 Data x=DE4 En=250 MeV
Cristian Massimi

46. Analysis 10-mm Polyethylene GEANT4 Data MC y=DE3 Data x=DE4 En=300 MeV
Cristian Massimi

47. Analysis 10-mm Polyethylene GEANT4 Data MC y=DE3 Data x=DE4 En=400 MeV
Cristian Massimi

48. Analysis 10-mm Polyethylene GEANT4 Data MC y=DE3 Data x=DE4 En=500 MeV
Cristian Massimi

49. TEST - FLUX
Cristian Massimi

50. Conclusions Summary of the first test Towards the second test
We start to see the light
Towards the second test
Need for Silicon detectors (En<40 MeV)
Improve response of the 1st scintillator
Improve structure of the PRT (θ=20°)
Cristian Massimi

51. Backup n+12C a p d t Reaction Products Q-value MeV Threshold 9Be + a
-5.7
6.2
n + 3a
-7.3
7.9 …
12B + p
-12.6
13.6
11B + n + p
-16.0
17.3
...
11B + d
-13.7
14.9
10B + t
-19.0
20.5 a p d t
Cristian Massimi

52. Backup 12C
DOI: /rpd/ncq166
Cristian Massimi