Author:
Tüchler M.,Amsler C.,Bazzi M.,Bosnar D.,Bragadireanu M.,Cargnelli M.,Carminati M.,Clozza A.,Deda G.,Del Grande R.,De Paolis L.,Dulski K.,Fabbietti L.,Fiorini C.,Friščić I.,Guaraldo C.,Iliescu M.,Iwasaki M.,Khreptak A.,Manti S.,Marton J.,Miliucci M.,Moskal P.,Napolitano F.,Niedźwiecki S.,Ohnishi H.,Piscicchia K.,Sada Y.,Scordo A.,Sgaramella F.,Shi H.,Silarski M.,Sirghi D.,Sirghi F.,Skurzok M.,Spallone A.,Toho K.,Vazquez Doce O.,Widmann E.,Yoshida C.,Zmeskal J.,Curceanu C.
Abstract
Abstract
The Veto-2 is a fundamental component of a multiple-stage
veto system for the SIDDHARTA-2 experiment installed at the
DAΦNE collider at INFN-LNF in Italy. It was developed to
improve the signal-to-background ratio for the challenging
measurement of X-ray transitions to the fundamental level in kaonic
deuterium. Its purpose is the suppression of hadronic background in
the form of Minimum Ionizing Particles by using the topological
correlation between signals in the X-ray and Veto-2 detectors. The
Veto-2 system consists of a barrel of plastic scintillators read out
by Silicon Photomultipliers. The system performed its first
successful test run within the apparatus with a helium-4 target in
2022. The efficiency of the Veto-2 was determined and found to be
0.62 ± 0.01. The Veto-2 improved the signal-to-background ratio
for the kaonic helium-4 Lα measurement by ∼ 16%,
which is crucial due to the low expected X-ray yield of kaonic
deuterium.
Subject
Mathematical Physics,Instrumentation
Cited by
1 articles.
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