SLIDE 1
mixing gas = 90% Ar10%CF Panel = 64HV-128RO
- scilloscope = DRS4-V1
MEANS : adding and deleting the number of HV and RO on the Panel. - - PowerPoint PPT Presentation
MEANS : adding and deleting the number of HV and RO on the Panel. - - PowerPoint PPT Presentation
GOAL : to determine the extent to which each discharge on a pixel affects neighboring pixels MEANS : adding and deleting the number of HV and RO on the Panel. Signal recording and analysis of data by ROOT. mixing gas = 90% Ar10%CF Panel =
SLIDE 2
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selection of the number of HV by adding or
removing resistors 100 MOhm
selection of the number of RO: hiding the other
with tape
setting up the source above the pixels Applying voltage between 750-800V signal recovery by DRS4 for approximately 1000
events for 1 to 4 RO. But trigger just on 1RO
plotting pulse high for each voltage and fitting
by gaussian
Plotting the means of Gaussian depending on
the voltage
SLIDE 4
1HV
y = 0.2025x + 38.864 100 120 140 160 180 200 220 240 260 280 300 750 760 770 780 790 800 mean voltage Linear (1HV-1RO ) y = 0,3927x - 180,48 y = 0.0885x + 166.66 100 120 140 160 180 200 220 240 260 280 300 750 760 770 780 790 800 mean voltage Linear (1HV-2RO) y = 0.4853x - 138.9 100 120 140 160 180 200 220 240 260 280 300 750 760 770 780 790 800 mean voltage Linear (1HV-4RO) y = 0.5469x - 300.8 y = 0.4605x - 121.61 100 120 140 160 180 200 220 240 260 280 300 750 760 770 780 790 800 mean voltage Linear (1HV-3RO )
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1HV 1RO 1HV 1RO #
mV Distribution of the pulse height for 750 V
#
mV Distribution of the pulse height for 800V
SLIDE 6
1HV 2RO #
mV
Distribution of the pulse height for 750 V
#
mV
Distribution of the pulse height for 775V
#
mV Distribution of the pulse height for 800 V
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2HV
y = 0.3651x - 27.709 y = 0.3684x - 83.727 y = 0.3871x - 166.17 100 120 140 160 180 200 220 240 260 280 300 750 760 770 780 790 800 mean voltage Linear (2HV-1RO ) y = 0.2564x + 45.9 y = 0.3738x - 146.63 100 120 140 160 180 200 220 240 260 280 300 750 760 770 780 790 800 mean voltage Linear (2HV-2RO) y = 0.4604x - 232.68 y = 0,436x - 195,95 y = 1.2583x - 757.97 y = 0.6969x - 270.22 100 120 140 160 180 200 220 240 260 280 300 750 760 770 780 790 800 mean voltage Linear (2HV-3RO ) y = -0.38x + 481.2 y = -0.0409x + 293.72 100 120 140 160 180 200 220 240 260 280 300 750 760 770 780 790 800 mean voltage Linear (2HV-4RO)
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2HV 1RO 750 V 775 V 800 V #
mV
Distribution of the pulse height for 750 V
#
mV
Distribution of the pulse height for 775 V
#
mV Distribution of the pulse height for 800 V
SLIDE 9
2HV 2RO #
mV
Distribution of the pulse height for 750 V
#
mV
Distribution of the pulse height for 775 V
#
mV Distribution of the pulse height for 800 V
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2HV 3RO 750 V 775V 800 V #
mV
Distribution of the pulse height for 750 V
#
mV
Distribution of the pulse height for 775 V
#
mV Distribution of the pulse height for 800 V
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2HV 4RO 800 V 750 V #
mV Distribution of the pulse height for 750 V
#
mV Distribution of the pulse height for 800 V
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3HV
y = 0.4875x - 100.62 y = 0.4804x - 112.64 y = 0.2793x - 14.209 y = 0.1203x + 41.921 100 120 140 160 180 200 220 240 260 280 300 750 760 770 780 790 800 mean voltage Linear (3HV-1RO) y = 0.2244x + 95.491 y = 0.4504x - 123.91 y = 0.326x - 109.91 100 120 140 160 180 200 220 240 260 280 300 750 760 770 780 790 800 mean voltage Linear (3HV-2RO) y = 0.4218x - 196.66 y = 0.461x - 99.892 y = 0.6682x - 282.53 100 120 140 160 180 200 220 240 260 280 300 750 760 770 780 790 800 mean voltage Linear (3HV-3RO) y = 0.3651x - 6.6545 y = 0.3002x + 16.905 y = 0.3853x - 163.97 100 120 140 160 180 200 220 240 260 280 300 750 760 770 780 790 800 mean voltage Linear (3HV-4RO)
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3HV -1RO 750 V 775 V 800 V 3 1 #
mV Distribution of the pulse height for 750 V
#
mV Distribution of the pulse height for 775 V
#
mV Distribution of the pulse height for 800 V
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3HV -4RO 750 V 775 V 800 V #
mV Distribution of the pulse height for 750 V
#
mV Distribution of the pulse height for 800 V
#
mV Distribution of the pulse height for 775 V
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4HV
y = 0.2949x + 57.073 y = 0.3965x - 44.077 y = 0.2427x + 14.995 y = 0.4033x - 167.39 100 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean Voltage Linear (4HV-1RO) y = 0.1667x + 140.83 y = 0.1928x + 68.789 y = 0.3589x - 130.17 y = -0.94x + 917.9 100 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean Voltage Linear (4HV-2RO) y = 0.1267x + 44.932 y = 0.2036x - 30.246 y = 0.994x - 549.66 100 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean Voltage Linear (4HV-3RO) y = 0.2065x + 89.2 y = 0.1329x + 167.62 y = 0.4131x - 157.21 100 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean Voltage Linear (4HV-4RO)
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4HV -4RO 750 V 775 V 800 V #
mV Distribution of the pulse height for 750 V
#
mV Distribution of the pulse height for 775 V
#
mV Distribution of the pulse height for 800 V
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120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (1HV-1RO) 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (2HV-1RO) 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (3HV-1RO) 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (4HV-1RO)
FOR 1RO
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100 120 140 160 180 200 220 240 260 280 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (1HV-2RO ) 100 120 140 160 180 200 220 240 260 280 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (2HV-2RO) 100 120 140 160 180 200 220 240 260 280 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (3HV-2RO) 100 120 140 160 180 200 220 240 260 280 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (4HV-2RO)
FOR 2RO
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100 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (1HV-3RO) 100 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (2HV-3RO) 100 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (4HV-3RO) 100 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (3HV-3RO)
FOR 3RO
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100 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (3HV-4RO) 100 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (4HV-4RO) 100 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (1HV-4RO) 100 120 140 160 180 200 220 240 260 280 300 750 755 760 765 770 775 780 785 790 795 800 mean voltage Linear (2HV-4RO)
FOR 4RO
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there is a variation of the distributions depending
- n the voltage: some distributions appear others
disappear.
the number of distributions is not proportional to the
number of pixels (refer for 2HV-1RO)
for low voltage, the recording time of 1000 events is
very long (about 30min), while for high voltage, the recording time is very short (about 1 min)
HV and RO on which the measurements were
made are not always the same, which might explain the different variations of distributions. And also the position of the radiation source.
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0.2 0.4 0.6 0.8 1 1.2 1.4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Slope a pixels
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For 4 bins
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For 7 bins
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For 10 bins
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For 20 bins
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Source ~ 3µCi 1 Ci = 3,7 . 10 pow(10) desintegrations
per seconde A ~ 10 pow(5) desintegrations per seconde But only ~ 10% of particles pass through the panel
10 pow (4) particles
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