Determination of deuteron beam polarizations at COSY
oleh: D. Chiladze, A. Kacharava, F. Rathmann, C. Wilkin, S. Barsov, J. Carbonell, S. Dymov, R. Engels, P. D. Eversheim, O. Felden, R. Gebel, V. Glagolev, K. Grigoriev, D. Gusev, M. Hartmann, F. Hinterberger, V. Hejny, A. Khoukaz, I. Keshelashvili, H. R. Koch, V. Komarov, P. Kulessa, A. Kulikov, A. Lehrach, B. Lorentz, G. Macharashvili, R. Maier, Y. Maeda, R. Menke, T. Mersmann, S. Merzliakov, M. Mikirtytchiants, S. Mikirtytchiants, A. Mussgiller, M. Nioradze, H. Ohm, D. Prasuhn, H. Rohdjeß, R. Schleichert, H. Seyfarth, E. Steffens, H. J. Stein, H. Ströher, S. Trusov, K. Ulbrich, Yu. Uzikov, A. Wrońska, S. Yaschenko
| Format: | Article |
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| Diterbitkan: | American Physical Society 2006-05-01 |
Deskripsi
The vector (P_{z}) and tensor (P_{zz}) polarizations of a deuteron beam have been measured using elastic deuteron–carbon scattering at 75.6 MeV and deuteron-proton scattering at 270 MeV. After acceleration to 1170 MeV inside the COSY storage ring, the polarizations of the deuterons were remeasured by studying the analyzing powers of a variety of nuclear reactions. For this purpose a hydrogen cluster target was employed at the ANKE magnetic spectrometer, which is situated at an internal target position in the ring. The overall precisions obtained were about 4% for both P_{z} and P_{zz}. Though all the measurements were consistent with the absence of depolarization during acceleration, only an upper limit of about 6% could be placed on such an effect.