Polarizing a stored proton beam by spin flip?
Nuclear Experiment
2009-06-11 v1
Abstract
We discuss polarizing a proton beam in a storage ring, either by selective removal or by spin flip of the stored ions. Prompted by recent, conflicting calculations, we have carried out a measurement of the spin flip cross section in low-energy electron-proton scattering. The experiment uses the cooling electron beam at COSY as an electron target. The measured cross sections are too small for making spin flip a viable tool in polarizing a stored beam. This invalidates a recent proposal to use co-moving polarized positrons to polarize a stored antiproton beam.
Cite
@article{arxiv.0902.1423,
title = {Polarizing a stored proton beam by spin flip?},
author = {D. Oellers and L. Barion and S. Barsov and U. Bechstedt and P. Benati and S. Bertelli and D. Chiladze and G. Ciullo and M. Contalbrigo and P. F. Dalpiaz and J. Dietrich and N. Dolfus and S. Dymov and R. Engels and W. Erven and A. Garishvili and R. Gebel and P. Goslawski and K. Grigoryev and H. Hadamek and A. Kacharava and A. Khoukaz and A. Kulikov and G. Langenberg and A. Lehrach and P. Lenisa and N. Lomidze and B. Lorentz and G. Macharashvili and R. Maier and S. Martin and S. Merzliakov and I. N. Meshkov and H. O. Meyer and M. Mielke and M. Mikirtychiants and S. Mikirtychiants and A. Nass and M. Nekipelov and N. N. Nikolaev and M. Nioradze and G. d'Orsaneo and M. Papenbrock and D. Prasuhn and F. Rathmann and J. Sarkadi and R. Schleichert and A. Smirnov and H. Seyfarth and J. Sowinski and D. Spoelgen and G. Stancari and M. Stancari and M. Statera and E. Steffens and H. J. Stein and H. Stockhorst and H. Straatmann and H. Stroeher and M. Tabidze and G. Tagliente and P. Thoerngren Engblom and S. Trusov and A. Vasilyev and Chr. Weidemann and D. Welsch and P. Wieder and P. Wuestner and P. Zupranski},
journal= {arXiv preprint arXiv:0902.1423},
year = {2009}
}
Comments
18 pages, 6 figures