M. Mikirtychyants, R. Engels, K. Grigoryev, H. Kleines, P. Kravtsov, S. Lorenz, M. Nekipelov, V. Nelyubin, F. Rathmann, J. Sarkadi, H. Paetz gen. Schieck, H. Seyfarth, E. Steffens, H. Ströher, A. Vasilyev
A polarized atomic beam source was developed for the polarized internal storage-cell gas target at the magnet spectrometer ANKE of COSY-J\"ulich. The intensities of the beams injected into the storage cell, measured with a compression tube, are $7.5\cdot 10^{16}$ hydrogen atoms/s (two hyperfine states) and $3.9\cdot 10^{16}$ deuterium atoms/s (three hyperfine states). For the hydrogen beam the achieved vector polarizations are $p_{\rm z}\approx\pm0.92$. For the deuterium beam, the obtained combinations of vector and tensor ($p_{\rm zz}$) polarizations are $p_{\rm z}\approx\pm 0.90$ (with a constant $p_{\rm zz}\approx +0.86$), and $p_{\rm zz}=+0.90$ or $p_{\rm zz}=-1.71$ (both with vanishing $p_{\rm z}$). The paper includes a detailed technical description of the apparatus and of the investigations performed during the development.
View original:
http://arxiv.org/abs/1212.1840
No comments:
Post a Comment