Meson Physics of a Condensed Matter Laboratory

Petersburg
Nuclear
Physics
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Petersburg Nuclear Physics Institute

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  Historical overview of main activities

Historical overview of main activities

A scientific collaboration between physicists from Petersburg Nuclear Physics Institute (PNPI, Gatchina) and from Forschungszentrum Juelich (Germany) has begun at 1991 in the frame of the agreement on applied and fundamental studies in nuclear and particle physics. This agreement has been signed by directors of two institutes, were prolongated several times and is valid in present time. A work design, production and setup of the magnetic spectrometer ANKE have been done a frame of this collaboration in a period between 1991 and 1998. ANKE is an experimental facility placed at the internal target position inside Cooler Synchrotron (COSY) allows one identify positively as well as negatively charged particles in the momentum range from 200 up to 3000 MeV/c with approximately 2% resolution. A main feature of the ANKE detection system is unique method of the K+-meson identification, which were developed and used in the earlier experiments at PNPI's synchrocyclotron. In this method a delayed signal form K-mesons decay products (pion or muon) is used in order to suppress background.

In parallel with that activity a new project on the design of the source of polarized hydrogen as well as deuterium atoms has been started in 1994. The developed source in currently used as a part of the Polarized Internal Target for ANKE and provide an access to the investigation of spin dependence for *pp*-, *pn*- and *dd*-reactions. A nuclear polarization of 80% for hydrogen atoms together with a beam intensity of 6*1016 atoms per second has been reached.

More in detail read (History_en.pdf)      




NRC "Kurchatov Institute"    Russian Academy of Sciences    Petersburg Nuclear Physics Institute
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PNPI, Gatchina, Leningrad district 188300, Russia.
Telephone: +7 (813  71)  46433,    +7 (813  71)  32161.       Fax: +7 (813  71)  30010

Last update on:   by   S.F. Udalova