Journal Article

FZJ-2017-04554

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spin tune mapping as a novel tool to probe the spin dynamics in storage rings

Saleev, A.FZJ* ; Nikolaev, N. N. ; Rathmann, F. (Corresponding author)FZJ* ; Augustyniak, W. ; Bagdasarian, Z.FZJ* ; Bai, M.FZJ* ; Barion, L. ; Berz, M. ; Chekmenev, S. ; Ciullo, G. ; Dymov, S.FZJ* ; Eversmann, D. ; Gaisser, M. ; Gebel, R.FZJ* ; Grigoryev, K.FZJ* ; Grzonka, D.FZJ* ; Guidoboni, G. ; Heberling, D. ; Hejny, V.FZJ* ; Hempelmann, N.FZJ* ; Hetzel, J.FZJ* ; Hinder, F.FZJ* ; Kacharava, A.FZJ* ; Kamerdzhiev, V.FZJ* ; Keshelashvili, I.FZJ* ; Koop, I. ; Kulikov, A. ; Lehrach, A.FZJ* ; Lenisa, P. ; Lomidze, N. ; Lorentz, B.FZJ* ; Maanen, P. ; Macharashvili, G.FZJ* ; Magiera, A. ; Mchedlishvili, D.FZJ* ; Mey, S. ; Müller, F.FZJ* ; Nass, A.FZJ* ; Pesce, A. ; Prasuhn, D.FZJ* ; Pretz, J.FZJ* ; Rosenthal, M. ; Schmidt, V.FZJ* ; Semertzidis, Y. ; Senichev, Y.FZJ* ; Shmakova, V. ; Silenko, A. ; Slim, J. ; Soltner, H.FZJ* ; Stahl, A. ; Stassen, R.FZJ* ; Stephenson, E. ; Stockhorst, H.FZJ* ; Stroeher, H.FZJ* ; Tabidze, M. ; Tagliente, G. ; Talman, R. ; Engblom, P. T. ; Trinkel, F.FZJ* ; Uzikov, Y.FZJ* ; Valdau, Y.FZJ* ; Valetov, E. ; Vassiliev, A. ; Weidemann, C.FZJ* ; Wrońska, A. ; Wüstner, P.FZJ* ; Zuprański, P. ; Zurek, M.FZJ*

2017
American Physical Society College Park, MD

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Please use a persistent id in citations: http://hdl.handle.net/2128/14878  doi:10.1103/PhysRevAccelBeams.20.072801

Abstract: Precision experiments, such as the search for electric dipole moments of charged particles using storage rings, demand for an understanding of the spin dynamics with unprecedented accuracy. The ultimate aim is to measure the electric dipole moments with a sensitivity up to 15 orders in magnitude better than the magnetic dipole moment of the stored particles. This formidable task requires an understanding of the background to the signal of the electric dipole from rotations of the spins in the spurious magnetic fields of a storage ring. One of the observables, especially sensitive to the imperfection magnetic fields in the ring is the angular orientation of stable spin axis. Up to now, the stable spin axis has never been determined experimentally, and in addition, the JEDI collaboration for the first time succeeded to quantify the background signals that stem from false rotations of the magnetic dipole moments in the horizontal and longitudinal imperfection magnetic fields of the storage ring. To this end, we developed a new method based on the spin tune response of a machine to artificially applied longitudinal magnetic fields. This novel technique, called spin tune mapping, emerges as a very powerful tool to probe the spin dynamics in storage rings. The technique was experimentally tested in 2014 using polarized deuterons stored in the cooler synchrotron COSY, and for the first time, the angular orientation of the stable spin axis at two different locations in the ring has been determined to an unprecedented accuracy of better than 2.8  μrad.

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Contributing Institute(s):

1. Experimentelle Hadrondynamik (IKP-2)
2. Kernphysikalische Großgeräte (IKP-4)
3. Experimentelle Hadronstruktur (IKP-1)
4. Zentralinstitut für Elektronik (ZEA-2)
5. Zentralinstitut für Technologie (ZEA-1)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF3-612) (POF3-612)
2. srEDM - Search for electric dipole moments using storage rings (694340) (694340)

Experiment(s):

1. Jülich Electric Dipole moment Investigations

Appears in the scientific report 2017

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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