Sensors (Aug 2023)

Potentialities of CdZnTe Quasi-Hemispherical Detectors for Hard X-ray Spectroscopy of Kaonic Atoms at the DAΦNE Collider

  • Leonardo Abbene,
  • Antonino Buttacavoli,
  • Fabio Principato,
  • Gaetano Gerardi,
  • Manuele Bettelli,
  • Andrea Zappettini,
  • Massimiliano Bazzi,
  • Mario Bragadireanu,
  • Michael Cargnelli,
  • Marco Carminati,
  • Alberto Clozza,
  • Griseld Deda,
  • Raffaele Del Grande,
  • Luca De Paolis,
  • Laura Fabbietti,
  • Carlo Fiorini,
  • Carlo Guaraldo,
  • Mihail Iliescu,
  • Misahiko Iwasaki,
  • Aleksander Khreptak,
  • Simone Manti,
  • Johann Marton,
  • Marco Miliucci,
  • Pawel Moskal,
  • Fabrizio Napolitano,
  • Szymon Niedźwiecki,
  • Hiroaky Ohnishi,
  • Kristian Piscicchia,
  • Yuta Sada,
  • Francesco Sgaramella,
  • Hexi Shi,
  • Michalł Silarski,
  • Diana Laura Sirghi,
  • Florin Sirghi,
  • Magdalena Skurzok,
  • Antonio Spallone,
  • Kairo Toho,
  • Marlene Tüchler,
  • Oton Vazquez Doce,
  • Chihiro Yoshida,
  • Johannes Zmeskal,
  • Alessandro Scordo,
  • Catalina Curceanu

DOI
https://doi.org/10.3390/s23177328
Journal volume & issue
Vol. 23, no. 17
p. 7328

Abstract

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Kaonic atom X-ray spectroscopy is a consolidated technique for investigations on the physics of strong kaon–nucleus/nucleon interaction. Several experiments have been conducted regarding the measurement of soft X-ray emission (20 keV) from intermediate kaonic atoms (carbon, aluminum, and sulfur). In this context, we investigated cadmium–zinc–telluride (CdZnTe or CZT) detectors, which have recently demonstrated high-resolution capabilities for hard X-ray and gamma-ray detection. A demonstrator prototype based on a new cadmium–zinc–telluride quasi-hemispherical detector and custom digital pulse processing electronics was developed. The detector covered a detection area of 1 cm2 with a single readout channel and interesting room-temperature performance with energy resolution of 4.4% (2.6 keV), 3% (3.7 keV), and 1.4% (9.3 keV) FWHM at 59.5, 122.1, and 662 keV, respectively. The results from X-ray measurements at the DAΦNE collider at the INFN National Laboratories of Frascati (Italy) are also presented with particular attention to the effects and rejection of electromagnetic and hadronic background.

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