First Linearity and Stability Characterization for CZT Detection System in a e${}^{+}$e${}^{-}$ Collider Environment

Abstract

The SIDDHARTA-2 collaboration built a new cadmium-zinc-telluride (CZT, CdZnTe)-based X-ray detection system, used for the first time in the DA$\Phi$NE electron-positron collider at INFN-LNF. The aim of this work is to show that these detectors present optimal long- and short-term linearity and stability to perform precise spectroscopic measurements in a collider environment. The spectra used as references for calibration are reported, and the results about the linearity and stability studies are presented. It is also discussed and showed what is the proper function to describe all the effects that alter the Gaussian shape in semiconductors, particularly evident in the CZT case. Good residuals and resolutions were obtained for all the calibrations. In a test run with the source and the collider beam on, it was demonstrated that the calibrations made with beam off are optimal also when the beam is on, and the actual systematics in a physics run were estimated. These promising results show the potentialities of this detector in the high rate environment of a particle collider, and pave the way for the use of CZT detectors in kaonic atoms researches and in accelerators, with applications for particle and nuclear physics.

15 pages, 9 figures, 3 tables

References in corpus (9)

• A New Measurement of Kaonic Hydrogen X rays
• Chiral Perturbation Theory and Baryon Properties
• Strangeness in Nuclei and Neutron Stars
• First measurement of kaonic helium-3 X-rays
• S-Wave Scattering of Fermion Revisited
• Characterization of the SIDDHARTA-2 luminosity monitor
• A new kaonic helium measurement in gas by SIDDHARTINO at the DAΦNE collider
• The SIDDHARTA-2 calibration method for high precision kaonic atoms X-ray spectroscopy measurements
• New opportunities for kaonic atoms measurements from CdZnTe detectors

Cited by in corpus (1)

• Time-based Selection of Kaonic Atom X-ray Events with Quasi-Hemispherical CZT Detectors at the DAFNE collider