Abstract

Large-area SDDs are being developed for the kaonic X-ray measurements in the SIDDHARTA experiment at LNF (Italy). The SDDs will provide an excellent background suppression using the time correlation between the kaonic X-rays and the back-to-back correlated K + K - pairs produced by the DA Φ NE electron–positron collider. This first application of these SDDs is an innovation for X-ray spectroscopy in general, and for the kaonic atom X-ray measurements in particular. The X-ray energy and width of the kaonic hydrogen K α line will be determined most accurately, and the kaonic deuterium K α line will be measured for the first time.

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