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HK: Fachverband Physik der Hadronen und Kerne

HK 31: FAIR Symposium

HK 31.3: Invited Talk

Tuesday, March 11, 2008, 17:30–18:00, 1A

Exploring unknown territory of the nuclear phase diagram with CBM. — •Joachim Stroth for the CBM collaboration — Institut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Germany — Gesellschaft für Schwerionenforschung, Darmstadt, Germany

The Compressed Baryonic Matter (CBM) experiment at FAIR will exploit heavy ion reactions at very high rates to address challenging open questions concerning the properties and nature of QCD matter at highest baryonic densites: where is the limit of hadronic existence? What is the order of the conjectured phase transition? Is there a critical point or signatures of exotic phases? The physics program of CBM is in many aspects complementary to the heavy ion programs at RHIC and LHC.

The central part of the CBM experiment is a compact high-resolution silicon tracking system placed in a magnetic dipole field and it is complemented with layers of various detector systems for particle identification behind it and a micro vertex detector close to the target. It will allow reconstruction of charged reaction products in a wide band of momenta and with utmost sensitivity. Emphasis is put on the investigation of heavy flavor (i.e. charm) production and propagation and on penetrating probes. The demand for highest rate capability and sensitivity clearly calls for detector and micro electronic technology beyond the one realized in currently available systems. The spectrometer concept is sufficiently flexible to be optimized for the most promising observables.