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@ARTICLE{Lorentz:18877,
author = {Lorentz, B. and Gebel, R. and Lehrach, A. and Maier, R. and
Prasuhn, D. and Stockhorst, H.},
title = {{S}tatus and future plans of polarized beams at {COSY}},
journal = {Journal of physics / Conference Series},
volume = {295},
issn = {1742-6588},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {PreJuSER-18877},
year = {2011},
note = {Record converted from VDB: 12.11.2012},
abstract = {In this paper we report on the present status and future
plans of polarized beams in the COSY synchrotron ring. COSY
is a synchrotron ring in the momentum range from 295 to 3700
MeV/c. Polarized deuterons and protons are routinely
delivered to exp eriments over the whole momentum range. No
depolarization occurs during the acceleration of deuterons
in COSY. For polarized protons many depolarizing resonances
are crossed without polarization loss. At imperfection
resonances, vertical steerer magnets a re used to increase
the resonance strength, leading to a complete polarization
reversal. At intrinsic resonances a fast tune jump
quadrupole is used to quickly cross the resonances without
loss of polarization. Typical proton polarizations are close
to 0. 8 below 2.1 GeV/c and about 0.6 for higher momenta.
During recent operation an induced depolarizing resonance
was used for accurate determination of the relative momentum
spread dp/p of the stored beam yielding an accuracy of
better than 10(-')(4). For sp in filter studies of the PAX
collaboration a low beta target section was installed in
2009 and was successfully put into operation early 2010. An
upgrade of the EDDA polarimeter electronics and data
acquisition system is underway to ensure continued avail
ability of the polarimeter, which is essential for the
polarized proton operation of COSY. In the near future it is
planned to install a Siberian snake solenoid of 4.5 Tm to be
able to provide in addition to vertically polarized protons,
longitudinal pola rization as well. This solenoid will allow
the preparation of a longitudinally polarized beam up to a
kinetic energy of 500 MeV.},
cin = {IKP-4},
ddc = {530},
cid = {I:(DE-Juel1)IKP-4-20111104},
pnm = {Großgeräte für die Forschung mit Photonen, Neutronen und
Ionen (PNI) / Physik der Hadronen und Kerne (FUEK413)},
pid = {G:(DE-Juel1)FUEK415 / G:(DE-Juel1)FUEK413},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000297031400071},
doi = {10.1088/1742-6596/295/1/012146},
url = {https://juser.fz-juelich.de/record/18877},
}