First Stability Characterization for a CZT Detection System in an e⁺e^- Collider Environment

Area of Science:

• Nuclear Physics
• Particle Physics
• Instrumentation

Background:

• The SIDDHARTA-2 collaboration introduced a new X-ray detection system utilizing cadmium-zinc-telluride (CZT) detectors.
• This marks the first deployment of CZT detectors at the DAΦNE electron-positron collider (INFN-LNF).

Purpose of the Study:

• To assess the stability of CZT detector performance (linearity and resolution) in a collider environment.
• To validate the detector's response function model for accurate spectroscopic measurements.
• To establish the suitability of CZT detectors for advanced physics applications.

Main Methods:

• Performance evaluation of CZT detectors focusing on linearity and resolution stability over time.
• Development and validation of a detector response function model.
• Spectral analysis using background and response functions to determine deviations.
• Comparative calibration analysis with and without collider beams.

Main Results:

• Demonstrated stable linearity and resolution of CZT detectors in a collider environment.
• Presented a validated detector response function model.
• Reported relative deviations from nominal values for source transitions.
• Showcased comparable calibration performance with and without collider beams.

Conclusions:

• CZT detectors exhibit stable and reliable performance for precise spectroscopy within a collider.
• The validated response function model enhances the accuracy of spectral analysis.
• These findings support the application of CZT detectors in kaonic atom studies and broader particle/nuclear physics spectroscopy.