Dresden 2013 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 19: Hadronenstruktur und -spektroskopie
HK 19.8: Vortrag
Montag, 4. März 2013, 18:45–19:00, HSZ-105
Preliminary results from the commissioning experiment of the polarized deuterium gas target at ANKE/COSY — •Boxing Gou — Institut für Kernphysik, Forschungszentrum Jülich, Germany — Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, P.R.China
By using the deuteron as a quasi-free neutron target at ANKE/COSY, many important observables can be investigated in polarized nucleon-nucleon collisions. The difference between the pp and np elastic scattering amplitude can be directly measured by investigating the np charge exchange reaction. This has already been successfully studied up to a nucleon energy of 1.1 GeV by using the polarized deuteron beam incident on polarized/unpolarized hydrogen targets. Using instead a polarized deuterium cell target it would be possible to extend the charge exchange studies up to the highest COSY proton beam energy of 2.8 GeV. In order to test the performance of the polarized deuterium gas target and the feasibility of continuing the charge exchange studies, a commissioning experiment was conducted in June 2012. Nuclear reactions with large and well-known cross sections and analyzing powers that fell within the ANKE acceptance were used to measure the target vector (Qy) and tensor (Qyy) polarizations.
The physics case for using a polarized deuterium gas target at ANKE/COSY will be presented, as well as the preliminary results regarding the pn charge exchange studies.
Supported by CSC program.