The high physics potential of experiments with stored high-energy polarized antiprotons led to the PAX proposal for the High Energy Storage Ring (HESR) of the FAIR facility (Facility for Antiproton and Ion Research) at GSI (Darmstadt/Germany). It is proposed to polarize a stored antiproton beam by spin filtering with a polarized hydrogen (deuterium) gas target. The feasibility of spin filtering has been demonstrated in the FILTEX experiment but the theoretical understanding is controversial. In order to clarify this situation several experimental studies with protons (at COSY) as well as with antiprotons (at AD/CERN) have to be carried out. These investigations require an experimental set-up of a polarized internal gas target (PIT) with a system of Silicon detectors implemented into a large acceptance section of the storage ring. The actual setup is described.
A Polarized Internal Gas Target for Spin-Filtering Studies at COSY and AD
CIULLO, Giuseppe;LENISA, Paolo;STATERA, Marco;
2007
Abstract
The high physics potential of experiments with stored high-energy polarized antiprotons led to the PAX proposal for the High Energy Storage Ring (HESR) of the FAIR facility (Facility for Antiproton and Ion Research) at GSI (Darmstadt/Germany). It is proposed to polarize a stored antiproton beam by spin filtering with a polarized hydrogen (deuterium) gas target. The feasibility of spin filtering has been demonstrated in the FILTEX experiment but the theoretical understanding is controversial. In order to clarify this situation several experimental studies with protons (at COSY) as well as with antiprotons (at AD/CERN) have to be carried out. These investigations require an experimental set-up of a polarized internal gas target (PIT) with a system of Silicon detectors implemented into a large acceptance section of the storage ring. The actual setup is described.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
