fast timing. behaviour of a scintillator escape of one k x ray photomultiplier compton scattering...
Post on 22-Dec-2015
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FFasastt
titimimingng
behaviour of a scintillator
Escape of one k x ray
Photomultiplier
ComptonScattering Photon
UV Photons
experimentalsetup #1
Ce
decay scheme of decay scheme of LaLanthanumnthanum
sources, decay schemes and spectra
1. 137137CsCs
137Cs
0
5000
10000
15000
20000
25000
0 200 400 600 800 1000 1200
E [KeV]
Co
un
ts
• 2. 6060CoCo
60Co
0
2000
4000
6000
8000
10000
12000
14000
0 50 100 150 200 250 300 350 400
Energy [KeV]
Cou
nts
• 3. 3. 226226RaRa
226Ra
0
2000
4000
6000
8000
10000
12000
0 500 1000 1500 2000 2500 3000
E [KeV]
Cou
nts
Resolution
R(E) - Fine Gain: 12.24Coarse: 100
y = -5E-05x + 0,1021R2 = 0,9757
0,03
0,035
0,04
0,045
0,05
0,055
0,06
0,065
0,07
600 700 800 900 1000 1100 1200 1300 1400
E [KeV]
R
Energy calibration
• Home Home made made voltage voltage deviderdevider
Calibration: E (N) - DYNODE
y = 0,7794x + 80,734R2 = 0,9995
0
500
1000
1500
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2500
0 500 1000 1500 2000 2500 3000 3500
N [channel]
E [
KeV
]
Calibration: E(N) - ANODE
y = 0,8081x + 51,67
R2 = 0,9998
0
200
400
600
800
1000
1200
1400
100 300 500 700 900 1100 1300 1500
N [channel]
E [
KeV
]
Efficiency curvesEfficiency(Energy)_dynode: 137Cs and 60Co
y = 0,0001x + 0,0037
R2 = 0,9836
0
0,02
0,04
0,06
0,08
0,1
0,12
0,14
0,16
600 700 800 900 1000 1100 1200 1300 1400
E [KeV]
ε
Eficiency(Energy)_anode: 137Cs and 60Co
y = -7E-05x + 0,2106
R2 = 0,8632
0
0,02
0,04
0,06
0,08
0,1
0,12
0,14
0,16
0,18
600,00 700,00 800,00 900,00 1000,00 1100,00 1200,00 1300,00 1400,00
E [KeV]
ε
Efficiency(Energy)_anode: 226Ra
y = 0,0039e-0,0012x
R2 = 0,9311
0,0001
0,001
0,01
0,1
1
0,00 200,00 400,00 600,00 800,00 1000,00
1200,00
1400,00
1600,00
1800,00
2000,00
E [KeV]
log
(ε)
Efficiency(Energy)_dynode: 226Ra
y = 0,0254e-0,0012x
R2 = 0,7243
0,001
0,01
0,1
1
0 500 1000 1500 2000 2500
E [KeV]
log
(ε)
experimentalsetup #2
START
STOP
Constant Constant fractionfraction
Timing: 152Eu
0
500
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1500
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1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
Energy [KeV]
t [s]
Timing: 60Co
0
100
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600
1200 1220 1240 1260 1280 1300 1320 1340 1360 1380 1400
E [KeV]
t [s]
• Literature result: Literature result: 1,44 ns1,44 ns
• Our results: Our results:
1,43 ns1,43 ns
Manuel
Castañeda
Desislava
IvanovaJavier
Meléndez
Dr. Stefan
Lalkovski
Dr. Pawel Napiorkowski