1. 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 Arfaoui Mathieu Benoit Student: Damiano Celeste

2. Procedure 2 Procedure: 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 - 55 Fe:5.8 keV 2)L04-W0125: 100μm, V=35V - 109 Cd:22.9 keV 3)C04-W0110: 50μm, V=15V - 241 Am26.2 keV; 60 keV 4)D09-W0126: 300μm, V=35V X-ray fluorescence: 5)B06-W0125: 100μm, V=-50V - Indium:24 kev 6)B07-W0125: 100μm, V=40V - Brass:8.1 kev

3. Procedure 3 Sources and XRF measurements Create root tree, single pixel clusters Less data: whole detector calibrationMore data: uniformity and SPC Generate TOT spectra for each source and fit peaks with Gaussian function Create calibration graph and fit with a surrogate function, finding the right parameters Generate TOT spectra for each pixel and sources and fit peaks with Gaussian function. 65536 pixels analysed on the batch, mean and error values are registered on.txt files Create per pixel maps for each source to study uniformity Create calibration graph for each pixel

4. State of work 4 Fe55Cd109Am241In(XRF)CuZn(XRF) Av.SPCAvSPCAv.SPCAv.SPCAv.SPC A06-W0110 L04-W0125 C04-W0110 D09-W0126 B06-W0125 B07-W0125 Done WIP Next steps

5. First analysis results: L04-W0125 5 Source Energy (keV) Fe552155,9 Cd109666≈22 Am24171526,3 127659,5 CuZn(XRF)350≈8 In (XRF)68624,1

6. First analysis results: L04-W0125 6 Average Calibration: 8h<Time<24h Average peaks Source Energy (keV) Fe552155,9 Cd109666≈22 Am24171526,3 127659,5 CuZn(XRF)350≈8 In (XRF)68624,1

7. SinglePixelCalibration: L04-W0125 7 Single Pixel Calibration: Much more data… 10h<Time<3d Average and error for each pixel Source TOT fluctuation Fe55215≈33% Cd109666≈41% Am241715≈43% 1276≈39% TOT Y X

8. SinglePixelCalibration: L04-W0125 8 Single Pixel Calibration: Much more data… 10h<Time<3d Average and error for each pixel Source TOT fluctuation Fe55215≈33% Cd109666≈41% Am241715≈43% 1276≈39%

9. SinglePixelCalibration: Cd109_L04 9

10. SinglePixelCalibration: Fe55 10 Detectors: A06-W0110 : 50μm, V=15V C04-W0110: 50μm, V=15V D09-W0126 :300μm, V=35V B06-W0125 :100μm, V=-50V B07-W0125: 50μm, V=40V

11. Conclusions and next steps 11 Conclusions : 1.Most of source measurements have been taken and they will be done within the end of this week. 2.Many XRF measurements have been taken. 3.Python codes for both the average calibration and single pixel analysis, valid for every source and detetors, were optimized. 4.Analysis showed us the non-uniformity of some detectors. Next steps : 1.Optimization of the experimental set-up for XRF measurements. 2.Analysis of percentage fluctuation of TOT with respect to the average. 3.Apply calibration parameters of L04-W0125 to test beam data.