HIT
First look at RAW
data distributions
Explorer @ HIT (22-26/02/2014)
Meeting INSIDE
Ilaria Mattei
25 Marzo 2014
lunedì 24 marzo 2014
1
SC = plastic scintillator; used as trigger for the DAQ
PMMA = phantom
Rn* = 2 pixelated LYSO, side by side, 1.6 x 5 x 5 cm3 each
Rs* = 2 pixelated LYSO, side by side, 1.6 x 5 x 5 cm3 each
Rn,s used for PET gamma’s measurements
LTS = plastic scintillator; used for TOF calculations
DCH = Drift Chamber; used for charged particles tracking
LYSO = matrix of four LYSO crystals; used to detect prompt
photons and charged particles
STS1a,b,c = plastic scintillators
STS2a,b,c = plastic scintillators
STS1,2 used for TOF calculation
BGOa,b,c = BGO crystals; used to detect charged fragments
*Rn and Rs were not positioned as reported in the scheme
Experimental Setup
ϑ = 30º
BGO c
STS2 c
STS2 b
BGO b
ϑ = 10º
Rn
beam
SC
STS1 c
STS1 b
PMMA
STS2 a
STS1 a
LTS
BGO a
ϑ = 0º
Rs
DCH
ϑ = 60º
LYSO
ϑ = 90º
lunedì 24 marzo 2014
2
BE
AM
Experimental Setup
lunedì 24 marzo 2014
3
Experimental Setup
lunedì 24 marzo 2014
4
Experimental Setup
lunedì 24 marzo 2014
5
4He
Secondary Fragments from
102 MeV/u
detected with BGO crystal at 0 degrees
raw
QDC (pC)
The protons, deuterons and tritons
bands are visible.
(no slewing effect correction)
PRE
L
1200
1000
800
x
beam
SC
PMMA
STS1a
STS2a
BGOa
y
z
(not to scale)
QDCcucito_vs_TOFsc_zm
Entries
Mean x
Mean y
RMS x
RMS y
IMI
NA
499596
43.53
427.1
17.22
273.9
RY
10
600
TOF computed using
BGOa and SC
400
1
200
10-1
0
20
lunedì 24 marzo 2014
30
40
50
60
70
80
90
TOF (ns)
6
4He
Prompt Photons from
102 MeV/u
detected with LYSO crystal at 90 degrees
x
Charged Particles
Prompt Photons
(protons)
(slewing effect not (slewing effect not
corrected yet)
corrected yet)
4000
beam
raw QDC (pC)
3000
QDCcucito_vs_TOFlts
Entries
Mean x
Mean y
RMS x
RMS y
334599
18.36
403.2
13.63
603.5
IMI
NA
LYSO
RY
2000
1500
TOF computed using
LYSO and LTS
1000
500
lunedì 24 marzo 2014
LTS
DCH
2500
0-10
z
PMMA
(not to scale)
PRE
L
3500
SC
y
0
10
20
30
40
50
TOF (ns)
7
Secondary Charged Particles from
16O
Emission profile of secondary charged particles,
reconstructed tracing back charged particles to
the beam line. Tracks are detected with the drift
chamber (DCH) [1].
210 MeV/u
hx_0
X projected at PMMA
PMMA:
zmin
= -6.65cm
100
zmax = 1 cm
Entries
Mean
-3.321
RMS
1.979
PRE
L
Prob
p0
80
p1
60
45.34 / 66
PMMA:
160
zmin = -9.65cm
zmax140= 1 cm
NA
RY
p2
1.326 ! 0.063
p3
-4.203 ! 0.082
p4
0.4538 ! 0.0192
p5
0.8462 ! 0.2375
-4.095
RMS
2.423
PRE
L
79.41 / 75
Prob
2118 ! 1174.2
-7.379 ! 0.850
Mean
p0
120
p1
p2
100
p3
80
0.6909 ! 0.0440
p5
0.5916 ! 0.3605
100
4971
-5.102
RMS
2.738
r 2 / ndf
172.4 / 74
Prob
8.037e-10
p2
120
LYSO
Mean
p1
-6.283 ! 0.180
p4
Entries
p0
140
-3.333 ! 0.402
1.383 ! 0.097
LTS
hx_2
PRE
L
0.3418
211.9 ! 31.9
z
DCH
PMMA:
180
zmin = -11.65cm
zmax 160
= 1 cm
IMI
NA
RY
y
PMMA
(not to scale)
X projected at PMMA
3493
r 2 / ndf
0.9756
IMI
Entries
SC
beam
300 MeV/u
hx_1
X projected at PMMA
1563
r 2 / ndf
260 MeV/u
x
IMI
NA
141 ! 3.6
-2.325 ! 0.105
1.282 ! 0.062
p3
-8.952 ! 0.046
p4
0.2167 ! 0.0289
p5
1.11 ! 0.37
RY
80
60
40
60
40
40
20
20
0
-20
-15
-10
-5
0
5
10
15
20
cm
0
-20
20
-15
-10
-5
0
5
10
15
20
cm
0
-20
-15
-10
-5
0
5
10
15
cm
20
[1] C. Agodi et al. - Charged particle’s flux measurement from PMMA irradiated by 80 MeV/u carbon ion beam,
Physics in Medicine and Biology, vol. 57, no. 18, p. 5667, (2012)
lunedì 24 marzo 2014
8
22Na
PET Photons calibration with two
sources
using four “PET heads” (pixelated LYSO)
Pixelated LYSO dimensions (i.e. each ‘head’): 1.6 x 5 x 5 cm3
Rn
Y (cm)
From a preliminary reconstruction of the
back-to-back photons direction, it’s possible to
see the position of the 22Na sources
x
y
z
(not to scale)
22Na
22Na
Rs
2.5
16000
PMMA_YZprofile
Entries
4928902
Mean x
0.742
Mean y
-0.1546
RMS x
2.889
RMS y
0.4817
2
1.5
1
14000
12000
10000
0.5
0
8000
-0.5
6000
-1
4000
-1.5
2000
-2
-2.5
-5
lunedì 24 marzo 2014
-4
-3
-2
-1
0
1
2
3
4
5
Z (cm)
0
9
4He
PET Photons from
125 MeV/u
detected with pixelated LYSO crystals
x
+
Preliminary reconstruction of the β decay point in
the YZ plane (Z = beam axis,Y=vertical direction).
N.b.: no corrections for detector efficiency nor
geometry acceptance.
z
Rn
beam
SC
PMMA
Y (cm)
(not to scale)
PMMA_YZprofile
Entries
41791
Mean x
0.3844
Mean y
0.1689
2.344
RMS x
RMS y
0.8379
2.5
Int
r
2
a-
1.5
1
0.5
Rs
10
sp1 i
ll
0
-0.5
10-1
-1
y
me
asu
re
me
nt
-1.5
-2
-2.5-5
lunedì 24 marzo 2014
-4
-3
-2
-1
0
1
2
3
4
5
Z (cm)
10
About the Beam...
Example of spill structure of the 125 MeV/u Helium Beam
in one run:
s
i
p
s
m
a
e
b
e
.
h
n
T
u
r
r
e
p
n
ru
lunedì 24 marzo 2014
e
g
n
ll cha
11
DAQ efficiency evaluation
Epsilon_DAQ = (Number of acquired ions) / (Number of traversing ions)
measured with the SC
Entries 100009
Mean
0.684
RMS
0.1162
14000
12000
10000
8000
6000
4000
2000
00
lunedì 24 marzo 2014
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Epsilon_DAQ
12
...MEN at WORK...
lunedì 24 marzo 2014
13