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College of Natural Sciences(자연과학대학)Dept. of Physics(물리학과)PH-Journal Papers(저널논문)

New Method for a Continuous Determination of the Spin Tune in Storage Rings and Implications for Precision Experiments

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Eversmann, D. / Hejny, V. / Hinder, F. / Kacharava, A. / Pretz, J. / Rathmann, F. / Rosenthal, M. / Trinkel, F. / Andrianov, S. / Augustyniak, W. / Bagdasarian, Z. / Bai, M. / Bernreuther, W. / Bertelli, S. / Berz, M. / Bsaisou, J. / Chekmenev, S. / Chiladze, D. / Ciullo, G. / Contalbrigo, M. / de Vries, J. / Dymov, S. / Engels, R. / Esser, F. M. / Felden, O. / Gaisser, M. / Gebel, R. / Glueckler, H. / Goldenbaum, F. / Grigoryev, K. / Grzonka, D. / Guidoboni, G. / Hanhart, C. / Heberling, D. / Hempelmann, N. / Hetzel, J. / Hipple, R. / Hoelscher, D. / Ivanov, A. / Kamerdzhiev, V. / Kamys, B. / Keshelashvili, I. / Khoukaz, A. / Koop, I. / Krause, H-J. / Krewald, S. / Kulikov, A. / Lehrach, A. / Lenisa, P. / Lomidze, N. / Lorentz, B. / Maanen, P. / Macharashvili, G. / Magiera, A. / Maier, R. / Makino, K. / Marianski, B. / Mchedlishvili, D. / Meiner, Ulf-G. / Mey, S. / Nass, A. / Natour, G. / Nikolaev, N. / Nioradze, M. / Nogga, A. / Nowakowski, K. / Pesce, A / Prasuhn, D. / Ritman, J. / Rudy, Z. / Saleev, A. / Semertzidis, Yannis K.researcher / Senichev, Y. / Shmakova, V. / Silenko, A. / Slim, J. / Soltner, H. / Stahl, A. / Stassen, R. / Statera, M. / Stephenson, E. / Stockhorst, H. / Straatmann, H. / Stroeher, H. / Tabidze, M. / Talman, R. / Engblom, P. Thoerngren / Trzcinski, A. / Uzikov, Yu. / Valdau, Yu. / Valetov, E. / Vassiliev, A. / Weidemann, C. / Wilkin, C. / Wirzba, A. / Wronska, A. / Wuestner, P. / Zakrzewska, M. / Zupranski, P. / Zyuzin, D.
A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, the spin tune-defined as the number of spin precessions per turn-is given by nu(s) = gamma G (gamma is the Lorentz factor, G the gyromagnetic anomaly). At 970 MeV/c, the deuteron spins coherently process at a frequency of approximate to 120 kHz in the Cooler Synchrotron COSY. The spin tune is deduced from the up-down asymmetry of deuteron-carbon scattering. In a time interval of 2.6 s, the spin tune was determined with a precision of the order 10(-8), and to 1 x 10(-10) for a continuous 100 s accelerator cycle. This renders the presented method a new precision tool for accelerator physics; controlling the spin motion of particles to high precision is mandatory, in particular, for the measurement of electric dipole moments of charged particles in a storage ring.
Publisher
AMER PHYSICAL SOC
Issue Date
2015-08
Language
English
Article Type
Article
Citation

PHYSICAL REVIEW LETTERS, v.115, no.9, pp.094801

ISSN
0031-9007
DOI
10.1103/PhysRevLett.115.094801
URI
http://hdl.handle.net/10203/205382
Appears in Collection
PH-Journal Papers(저널논문)
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