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HK: Physik der Hadronen und Kerne

HK 48: Instrumentation and Applications VI

HK 48.1: Gruppenbericht

Donnerstag, 14. März 2002, 16:00–16:30, F

Investigaions of scintillation detectors for relativistic heavy ion calorimetry — •Radomira Lozeva^1,2, Jürgen Gerl¹, Ivan Kojouharov¹, Samit Mandal¹, and Juri Kopatch¹ — ¹GSI, Darmstadt, Germany — ²Faculty of Physics, University of Sofia, Sofia, Bulgaria

To gain information on the energy resolution of scintillators for heavy ion detection at high particle energy an in-beam test was performed at the Fragment Separator, FRS at GSI. Primary ¹⁹⁷Au beam was transported through FRS and particle identification detectors to the scintillator set-up. CsI(Tl)+PMT, CsI(Tl)+PIN diode, NaI(Tl), BGO and Plastic scintillation detectors were selected for investigation.

The results of the in-beam test analysis showed satisfactory results for the CsI(Tl)+PMT scintillator. An energy resolution of 0.46% FWHM for ¹⁹⁷Au ions of 306 MeV/n ion energy was achieved with appropriate analysis conditions. The obtainable resolution is sufficient for further mass determination of heavy ions by calorimetry and will therefore be chosen for the fast beam RISING [1] campaign at GSI.

[1] http://www-aix.gsi.de/^∼wolle/EB_at_GSI/rising.html