Calorimeter Calibration Updates and Temperature Analysis
Explore the latest developments in calorimeter calibration, temperature updates, and stability resolution. Learn about the process of temperature calibration using a climate chamber and converting ADC channels to temperatures. Follow along with the thermal equilibrium temperature distribution of CNAO crystals and discover insights from the screensaver runs. Stay updated on the progress towards achieving stable temperature readings for efficient data analysis.
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Presentation Transcript
Calorimeter Calorimeter updates: Screensaver Analysis and Temperature updates: Screensaver Analysis and Temperature Calibration Calibration 13/12/2022 13/12/2022 A. Valetti A. Valetti
Calorimeter calibration: Temperature calibration Calorimeter calibration: Temperature calibration During the data takings the temperature of each crystals is acquired with Arduino and registered in the global DAQ The values that we read are Arduino ADC channel and should be converted to temperatures with a proper calibration For the temperature calibration we use a climate chamber We measure in the temperature range 22.5 50 C in 2.5 C steps Each measurement lasts 2 hours to reach the stability for each crystal We have 108 crystal divided in 12 modules and we put 2 modules at the same time in the climate chamber In 1.5 weeks from now the measurement will be concluded 01/03/2023 01/03/2023 F. Cavanna A. Valetti F. Cavanna A. Valetti 1 1
Calorimeter calibration: Temperature calibration Calorimeter calibration: Temperature calibration Adc channels vs time (Mod. 8) Example of Temp_Adc channels vs time at 47.5 C For each temperature measured we have 9 fit for each module 01/03/2023 01/03/2023 F. Cavanna A. Valetti F. Cavanna A. Valetti 2 2
Calorimeter calibration: Stability and Resolution Calorimeter calibration: Stability and Resolution We convert the Adc channels (obtained from the fit described in the previous slide) in temperature using the Steinhart Hart expression ln 1/? = ?0+ ?1ln ?? + ?2ln(??)3 Where Rt is proportional to the Adc channels Mod 8: 01/03/2023 01/03/2023 F. Cavanna A. Valetti F. Cavanna A. Valetti 3 3
Calorimeter calibration: Screensaver Run Calorimeter calibration: Screensaver Run Thermal equilibrium temperature distribution of CNAO crystals Calibration in progress but no geographical pattern shown Fit on plateau to retrieve stability temperature Crystals switched off We found a wrong connection in Mod 10 ch6 01/03/2023 01/03/2023 F. Cavanna A. Valetti F. Cavanna A. Valetti 4 4
Calorimeter calibration: Screensaver Run Calorimeter calibration: Screensaver Run December screensaver runs: (Carbon 300 MeV, 200 MeV, 115 MeV) Not all crystals presents an Amplitude Peaks Clean enough to be analysed Crystals switched off Crystals with good peaks 01 01/03/2023 /03/2023 F. Cavanna A. Valetti F. Cavanna A. Valetti 5 5
Calorimeter calibration: Birks Function Fit Calorimeter calibration: Birks Function Fit Energy response function Birks function Birks fit residual P0 shift residual 01/03/2023 01/03/2023 F. Cavanna A. Valetti F. Cavanna A. Valetti 6 6
Calorimeter calibration: Stability and Resolution Calorimeter calibration: Stability and Resolution Ratio between each crystal and cry 23 Crystal resolution (HIT last night) No intercalibration factor possible Need for intercalibration run prior to data taking Resolution inferior to 3% Good news 01/03/2023 01/03/2023 F. Cavanna A. Valetti F. Cavanna A. Valetti 7 7
