Status of the RISING project at relativistic energies

Acta. Phys. Pol. B

36
1235
(2005)
P. Bednarczyk, A. Banu, T. Beck, F. Becker, M.A. Bentley, G. Benzoni, A. Bracco, A. Bürger, F. Camera, P. Doornenbal, C. Fahlander, H. Geissel, J. Gerl, M. Górska, H. Grawe, J. Grebosz, G. Hammond, M. Hellström, H. Hübel, J. Jolie, M. Kmiecik, I. Kojouharov, N.Kurz, R. Lozeva, A. Maj, S. Mandal, W. Meczynski, B. Million, S. Muralithar, P. Reiter, D. Rudolph, N. Saito, T.R. Saito, H. Schaffner, J. Simpson, J. Styczen, N. Warr, H. Weick, C. Wheldon, O. Wieland, M. Winkler, H.J. Wollersheim

The RISING project was designed to perform high-resolution γ-ray
spectroscopy with radioactive beams at GSI. Unstable beams were produced by fragmentation of relativistic heavy ion projectiles provided by the
SIS synchrotron. The fragment separator FRS was used to select and to focus the exotic fragments at about 100A MeV energy on a secondary target.
Various charged particle detectors enabled an event-by-event tracking of the
incoming radioactive projectiles and the reaction products, thus allowing
for a selection of the nuclei of interest and their velocity vector reconstruction. The γ-ray detection system consisting of the EUROBALL Cluster Ge
detectors and the large volume HECTOR BaF2 detectors measured prompt
γ-radiation from nuclei excited in the secondary target. Despite the huge
Doppler shift due to the high recoil velocity (β ≈40%), RISING achieved
a γ-energy resolution below 2%. The paper reviews the present status of
the RISING project.

DOI
https://www.actaphys.uj.edu.pl/R/36/4/1235/pdf
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