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000838061 005__ 20210129231502.0
000838061 0247_ $$2doi$$a10.1063/1.1586674
000838061 037__ $$aFZJ-2017-06799
000838061 041__ $$aEnglish
000838061 1001_ $$0P:(DE-Juel1)131234$$aLehrach, Andreas$$b0$$eCorresponding author
000838061 1112_ $$aINCREASING THE AGS POLARIZATION$$cAnn Arbor$$d2002-11-06 - 2002-11-09$$wMichigan (USA)
000838061 245__ $$aOvercoming Depolarizing Resonances at COSY
000838061 260__ $$bAIP$$c2003
000838061 29510 $$aAIP Conference Proceedings 
000838061 300__ $$a30-39
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000838061 520__ $$aAt the cooler synchrotron COSY, polarized protons and deuterons are accelerated up to 3.65 GeV/c. In a strong‐focusing synchrotron like COSY, imperfection and intrinsic resonances cause polarization losses during acceleration. During the acceleration of polarized protons, five imperfection resonances are crossed. The existing magnet system of COSY allows to overcome all imperfection resonances by exciting adiabatic spin flips without polarization losses. The number of intrinsic resonances depends on the superperiodicity of the lattice. A tune‐jump system consisting of two fast quadrupoles has been developed to handle intrinsic resonances in COSY. Vertically polarized proton beams with more than 75% polarization have been delivered in recent years to internal as well as to external experiment areas at different momenta up to the maximum momentum of COSY. For the acceleration of polarized deuterons, additional correction provisions are not necessary to preserve polarization during acceleration. In this paper the techniques to overcome depolarizing resonances and the status of the polarized beam acceleration at COSY are discussed.
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000838061 65027 $$0V:(DE-MLZ)SciArea-230$$2V:(DE-HGF)$$aParticle Physics$$x0
000838061 65017 $$0V:(DE-MLZ)GC-2004-2016$$2V:(DE-HGF)$$aBasic research$$x0
000838061 7001_ $$0P:(DE-Juel1)131090$$aBechstedt, Ulf$$b1
000838061 7001_ $$0P:(DE-Juel1)131129$$aDietrich, Jürgen$$b2
000838061 7001_ $$0P:(DE-Juel1)131164$$aGebel, Ralf$$b3
000838061 7001_ $$0P:(DE-Juel1)131242$$aLorentz, Bernd$$b4
000838061 7001_ $$0P:(DE-Juel1)131248$$aMaier, Rudolf$$b5
000838061 7001_ $$0P:(DE-Juel1)131289$$aPrasuhn, Dieter$$b6
000838061 7001_ $$0P:(DE-HGF)0$$aSchnase, Alexander$$b7
000838061 7001_ $$0P:(DE-Juel1)133743$$aSchneider, Herbert$$b8
000838061 7001_ $$0P:(DE-Juel1)131342$$aStassen, Rolf$$b9
000838061 7001_ $$0P:(DE-Juel1)131346$$aStockhorst, Hans$$b10$$ufzj
000838061 7001_ $$0P:(DE-Juel1)131359$$aTölle, Raimund$$b11
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