Polarized antiprotons would open a new window in hadron physics providing access to a wealth of single and double spin observables in proton-antiproton interactions. The PAX Collaboration aims to perform the first ever measurement of the spin-dependence of the proton-antiproton cross section at the AD ring at CERN. The spin-dependence of the cross section could in principle be exploited by the spin-filtering technique to obtain an intense beam of polarized antiprotons in a dedicated storage ring. As a preparatory phase to the experimentation at AD, the PAX Collaboration has performed a spin-filtering experiment with protons at the COSY-ring in Juelich (Germany), aimed at the commissioning of the experimental apparatus and confirmation of the predictions for spin-filtering with protons. In the presentation, a description of the experimental setup and its commissionig phase will be given, together with the results of the measurement.
Polarization of stored beam by spin filtering at COSY
CIULLO, Giuseppe
2012
Abstract
Polarized antiprotons would open a new window in hadron physics providing access to a wealth of single and double spin observables in proton-antiproton interactions. The PAX Collaboration aims to perform the first ever measurement of the spin-dependence of the proton-antiproton cross section at the AD ring at CERN. The spin-dependence of the cross section could in principle be exploited by the spin-filtering technique to obtain an intense beam of polarized antiprotons in a dedicated storage ring. As a preparatory phase to the experimentation at AD, the PAX Collaboration has performed a spin-filtering experiment with protons at the COSY-ring in Juelich (Germany), aimed at the commissioning of the experimental apparatus and confirmation of the predictions for spin-filtering with protons. In the presentation, a description of the experimental setup and its commissionig phase will be given, together with the results of the measurement.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.