Negative CTI obtained!!!
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Transcript of Negative CTI obtained!!!
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8/6/2019 Negative CTI obtained!!!
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Negative CTI obtained!!!
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1. CTI vs Temperature
Only CTI before irradiation is positive. For
the other cases, CTI is multiplied by -1.
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Dose
X-ray signal
Pixel number
2.1. Expected X-ray signal
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2.2.1. Before irradiation
2.2. Measured X-ray signal
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2.2.2. For different doses
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2.2.3. For different temperatures
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3. Baseline shift
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50 100 150 200 250 300 350 400 4505
10
15
20
25
30
P ixel number
X
-ray
S
ignal/N
oi
se
0 krad, before summer
0 krad, after summer
44 krad
84 krad
124 krad
164 krad
4. Signal/noise ratio
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5. Noise
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6. Studying the case where CTI is high
6.1. Fit X-ray signals
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6.2.1. Distribution of pixels 10 to 20
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6.2.2. Distribution of pixels 470 to480
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6.3.1. The whole frame
6.3. Recorded frame from the scope
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6.3.2. Firsts pixels
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6.3.3. Lasts pixels