D . Mchedlishvili

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D. Eversmann, V. Hejny, F. Hinder, 2 A. Kacharava, J. Pretz, 3 F. Rathmann, M. Rosenthal, 2 F. Trinkel, 2 S. Andrianov, W. Augustyniak, Z. Bagdasarian, M. Bai, 3 W. Bernreuther, 3 S. Bertelli, M. Berz, J. Bsaisou, 2 S. Chekmenev, D. Chiladze, 2 G. Ciullo, M. Contalbrigo, J. de Vries, 2 S. Dymov, 11 R. Engels, F.M. Esser, O. Felden, M. Gaisser, R. Gebel, H.(More)
The proton analysing power in ~pp elastic scattering has been measured at small angles at COSY-ANKE at 796 MeV and five other beam energies between 1.6 and 2.4 GeV using a polarised proton beam. The asymmetries obtained by detecting the fast proton in the ANKE forward detector or the slow recoil proton in a silicon tracking telescope are completely(More)
This Letter reports the successful use of feedback from a spin polarization measurement to the revolution frequency of a 0.97  GeV/c bunched and polarized deuteron beam in the Cooler Synchrotron (COSY) storage ring in order to control both the precession rate (≈121  kHz) and the phase of the horizontal polarization component. Real time synchronization with(More)
We observe a deuteron beam polarization lifetime near 1000 s in the horizontal plane of a magnetic storage ring (COSY). This long spin coherence time is maintained through a combination of beam bunching, electron cooling, sextupole field corrections, and the suppression of collective effects through beam current limits. This record lifetime is required for(More)
The vector and tensor analysing powers, Ay and Ayy, of the p~ d → n{pp}s charge-exchange reaction have been measured at a beam energy of 600 MeV at the COSY-ANKE facility by using an unpolarised proton beam incident on an internal storage cell target filled with polarised deuterium gas. The low energy recoiling protons were measured in a pair of silicon(More)
A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, the spin tune-defined as the number of spin precessions per turn-is given by ν(s)=γG (γ is the Lorentz factor, G the gyromagnetic anomaly). At 970  MeV/c, the deuteron spins coherently precess at a frequency of ≈120  kHz in the Cooler Synchrotron COSY. The(More)
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