TY  - JOUR
AU  - AGATA Collaboration
AU  - Domingo-Pardo, C.
AU  - Bazzacco, D.
AU  - Doornenbal, P.
AU  - Farnea, E.
AU  - Gadea, A.
AU  - Gerl, J.
AU  - Wollersheim, H. J.
PY  - 2012
DA  - 2012//
TI  - Conceptual design and performance study for the first implementation of AGATA at the in-flight RIB facility of GSI
T2  - Nucl. Instrum. Methods Phys. Res. A
JO  - Nuclear Instruments & Methods in Physics Research A
SP  - 297
EP  - 312
VL  - 694
PB  - Elsevier Science Bv
KW  - gamma-Ray spectroscopy
KW  - Tracking
KW  - Monte Carlo
AB  - The main objective of the Advanced GAmma Tracking Array (AGATA) is the investigation of the structure of exotic nuclei at the new generation of RIB facilities. As part of the preparatory phase for FAIR-NUSTAR, AGATA is going to be installed at the FRS fragmentation facility of the GSI centre for an experimental campaign to be performed in 2012 and 2013. Owing to its gamma-ray tracking capabilities and the envisaged enhancement in resolving power, a series of in-flight gamma-ray spectroscopy experiments are being planned. The present work describes the conceptual design of this first implementation of AGATA at GSI-FRS, and provides information about the expected performance figures. According to the characteristics of each particular experiment, it is foreseen that the target-array distance is adjusted in order to achieve the optimum compromise between detection efficiency and energy resolution, or to cover an specific angular range of the emitted electromagnetic radiation. Thus, a comprehensive Monte Carlo study of the detection sensitivity in terms of photopeak efficiency, resolution and peak-to-total ratio, as a function of the target-array distance is presented. Several configurations have been investigated, and MC-calculations indicate that a remarkable enhancement in resolving power can be achieved when double-cluster AGATA detectors are developed and implemented. Several experimental effects are also investigated. This concerns the impact of passive materials between the target and the array, the angular distribution of the detection efficiency and the influence of target thickness effects and transition lifetimes in the attainable detection sensitivity. A short overview on half-life measurements via lineshape effects utilizing AGATA is also presented. (C) 2012 Elsevier B.V. All rights reserved.
SN  - 0168-9002
UR  - https://doi.org/10.1016/j.nima.2012.08.039
DO  - 10.1016/j.nima.2012.08.039
LA  - English
N1  - WOS:000311020500041
ID  - AGATACollaboration_etal2012
ER  -