1.Portabilità e robustezza 2.Qualità di spettri a T ambiente 3.Riconoscimenti di picchi deboli...
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Transcript of 1.Portabilità e robustezza 2.Qualità di spettri a T ambiente 3.Riconoscimenti di picchi deboli...
1. Portabilità e robustezza
2. Qualità di spettri a T ambiente
3. Riconoscimenti di picchi deboli
4. Costi contenuti
5. Software di identificazione
TimePix Calibration
Supervisors: Samir ArfaouiMathieu Benoit
Student: Damiano Celeste
2
ProcedureProcedure: Sources and XRF spectra acquisitions to obtain a fit to the surrogate function.
Goal: 1) Average calibration of detectors.2) Study of the sensor uniformity and
single pixel calibration.3) Use energy values instead of TOT for
test-beam analysis.
Detectors: Sources:1) A06-W0110: 50μm, V=15V - 55Fe: 5.8 keV2) L04-W0125: 100μm, V=35V - 109Cd: 22.9 keV3) C04-W0110: 50μm, V=15V - 241Am 26.2 keV; 60 keV4) D09-W0126: 300μm, V=35V X-ray fluorescence:5) B06-W0125: 100μm, V=-50V - Indium: 24 kev6) B07-W0125: 100μm, V=40V - Copper: 8 kev
3
Previous tate of workFe55 Cd109 Am241 In(XRF) CuZn(XRF)
Av. SPC Av SPC Av. SPC Av. SPC Av. SPC
A06-W0110
L04-W0125
C04-W0110
D09-W0126
B06-W0125
B07-W0125
Done WIP Next steps
4
State of workFe55 Cd109 Am241 In(XRF) Cu(XRF)
Av. SPC Av SPC Av. SPC Av. SPC Av. SPC
A06-W0110
L04-W0125
C04-W0110
D09-W0126
B06-W0125
B07-W0125
Done WIP Next steps
5
C04-W0110
RECONNECT
RECONNECT
CLOSER SAMPLE
CLOSER SAMPLE
6
B07-W0125
COPPER MASK
COPPER MASK
D09-W0126
COPPER MASK
COPPER MASK
NO MASK
NO MASK
MASK + RECONNECT
MASK + RECONNECT
C04-W0110: χ2
Source <TOT> Energy Fe55 233 5.9
Cd109 591 ≈22
Am241 635 26.3
1130 59.5
Copper 339 8
Indium 626 24
Source <TOT> Energy Fe55 233 5.9
Cd109 591 ≈22
Am241 633 26.3
1128 59.5
Copper 339 8
Indium 626 24
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Questions and next stepsQuestions:
1. Why and how does the reconnection of the device affect measurements?
2. Which is the best set-up for XRF flourescence?
3. Should we take into account the χ2 factor? How?
4. Does the great amount of events on the detector affect measurements?
Next steps:
5. To try to understand what happens to DAC when reconnecting
6. Using a Co57 source, gamma emission around 8 keV
7. Once obtained good global results Single Pixel Calibration
-NO RECONNECT-NO MASK-CLOSER SAMPLE
-NO RECONNECT-NO MASK-CLOSER SAMPLE
-NO RECONNECT-MASK-CLOSER SAMPLE
-NO RECONNECT-MASK-CLOSER SAMPLE
-RECONNECT-MASK-CLOSER SAMPLE
-RECONNECT-MASK-CLOSER SAMPLE