Performance of silicon-drift detectors in kaonic atom X-ray measurements

Autor: V. Lucherini, T. Ponta, O. Vazquez Doce, H. Tatsuno, A. M. Bragadireanu, Michael Cargnelli, Diana Sirghi, A. Romero Vidal, Hexi Shi, Luca Bombelli, D. Pietreanu, G. A. Beer, Tommaso Frizzi, M. Iliescu, Johann Marton, M. Bazzi, Florin Sirghi, B. Girolami, Carlo Fiorini, A. Rizzo, T. Ishiwatari, Eberhard Widmann, F. Ghio, V. Tudorache, Ryugo S. Hayano, Alessandro Scordo, C. Guaraldo, Masahiko Iwasaki, Shinji Okada, G. Corradi, P. Levi Sandri, Johann Zmeskal, A. d'Uffizi, P. Kienle, A. Longoni, Catalina Curceanu, A. Tudorache
Rok vydání: 2011
Předmět:
Zdroj: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 628:264-267
ISSN: 0168-9002
DOI: 10.1016/j.nima.2010.06.332
Popis: Large-area silicon drift detectors (SDDs) were used for the first time in the background condition of a collider for precision spectroscopy of the kaonic atom X-rays in the SIDDHARTA experiment for the study of the strong interaction in a low-energy regime. The measurements were performed at the DA Φ NE electron–positron collider (LNF, Italy), using gas targets of hydrogen, deuterium, helium-3, and helium-4. A test measurement using the kaonic 4 He X-rays showed an excellent performance of the SDD devices under the beam conditions, and a good background suppression capability using the time correlation between the kaonic atom X-rays and the back-to-back correlated K + K − pairs produced by φ decays.
Databáze: OpenAIRE