We present the tests performed by the SIDDHARTA-2 collaboration at the DA{\Phi}NE collider with a quasi-hemispherical CdZnTe detector. The very good room-temperature energy resolution and efficiency in a wide energy range show that this detector technology is ideal for studying radiative transitions in intermediate and heavy-mass kaonic atoms. The CdZnTe detector was installed for the first time in an accelerator environment to perform tests on the background rejection capabilities, which were achieved by exploiting the SIDDHARTA-2 Luminosity Monitor. A spectrum with an 241Am source has been acquired, with beams circulating in the main rings, and peak resolutions of 6% at 60 keV and of 2.2% at 511 keV have been achieved. The background suppression factor, which turned out to be of the order of ≃105−6, opens the possibility to plan for future kaonic atom measurements with CdZnTe detectors.
@article{arxiv.2301.12253,
title = {New opportunities for kaonic atoms measurements from CdZnTe detectors},
author = {L. Abbene and M. Bettelli and A. Buttacavoli and F. Principato and A. Zappettini and C. Amsler and M. Bazzi and D. Bosnar and M. Bragadireanu and M. Cargnelli and M. Carminati and A. Clozza and G. Deda and L. De Paolis and R. Del Grande and L. Fabbietti and C. Fiorini and I. Friščić and C. Guaraldo and M. Iliescu and M. Iwasaki and A. Khreptak and S. Manti and J. Marton and M. Miliucci and P. Moskal and F. Napolitano and S. Niedźwiecki and H. Ohnishi and K. Piscicchia and Y. Sada and F. Sgaramella and H. Shi and M. Silarski and D. L. Sirghi and F. Sirghi and M. Skurzok and A. Spallone and K. Toho and M. Tüchler and O. Vazquez Doce and C. Yoshida and J. Zmeskal and A. Scordo and C. Curceanu},
journal= {arXiv preprint arXiv:2301.12253},
year = {2023}
}