Abstract
A heavy-ion detector was developed for decay studies in the Experimental Storage Ring (ESR) at the GSI Helmholtz Centre for Heavy Ion Research in Darmstadt, Germany. This detector serves as a prototype for the in-pocket particle detectors for future experiments with the Collector Ring (CR) at FAIR (Facility for Antiproton and Ion Research). The detector includes a stack of six silicon pad sensors, a double-sided silicon strip detector (DSSD), and a CsI(Tl) scintillation detector. It was used successfully in a recent experiment for the detection of the β+-decay of highly charged 142Pm60+ ions. Based on the ΔE/E technique for particle identification and an energy resolution of 0.9% for ΔE and 0.5% for E (Full Width at Half Maximum (FWHM)), the detector is well-suited to distinguish neighbouring isobars in the region of interest.
Highlights
ILIMA programme at the Collector Ring (CR) [3] at FAIR
In a recent experiment at Experimental Storage Ring (ESR), the detector was placed in a pocket at an outside position in the northern arc, right behind the dipole
To generate the ions of interest, a primary beam of 152Sm was impinged on a beryllium target at the entrance of the Fragment Separator (FRS)
Summary
ILIMA programme at the Collector Ring (CR) [3] at FAIR. The detector includes a stack of six silicon pad detectors (60×40×0.5 mm3), a double-sided silicon strip detector (DSSD) (60×40×0.3 mm3), a tantalum slab as passive absorber (60×40×1 mm3), and a CsI scintillation detector (24×24×10 mm3). In a recent experiment at ESR, the detector was placed in a pocket at an outside position in the northern arc, right behind the dipole.
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