Spin tune mapping as a novel tool to probe the spin dynamics in storage rings

doi:10.1103/PhysRevAccelBeams.20.072801

Spin tune mapping as a novel tool to probe the spin dynamics in storage rings

Communities & Collections

pcg.skipToMenu

Spin tune mapping as a novel tool to probe the spin dynamics in storage rings

View Usage Statistics

Bibliographic description

punktacja MEiN [2017 A]: 25

title:	Spin tune mapping as a novel tool to probe the spin dynamics in storage rings
author:	Saleev A., Nikolaev N. N., Rathmann F., Augustyniak W., Bagdasarian Z., Bai M., Barion L., Berz M., Chekmenev S., Ciullo G., Dymov S., Eversmann D., Gaisser M., Gebel R., Grigoryev K., Grzonka D., Guidoboni G., Heberling D., Hejny V., Hempelmann N., Hetzel J., Hinder F., Kacharava A., Kamerdzhiev V., Keshelashvili I., Koop I., Kulikov A., Lehrach A., Lenisa P., Lomidze N., Lorentz B., Maanen P., Macharashvili G., Magiera Andrzej , Mchedlishvili D., Mey S., Müller F., Nass A., Pesce A., Prasuhn D., Pretz J., Rosenthal M., Schmidt V., Semertzidis Y., Senichev Y., Shmakova V., Silenko A., Slim J., Soltner H., Stahl A., Stassen R., Stephenson E., Stockhorst H., Ströher H., Tabidze M., Tagliente G., Talman R., Engblom P. Thörngren, Trinkel F., Uzikov Yu., Valdau Yu., Valetov E., Vassiliev A., Weidemann C., Wrońska Aleksandra , Wüstner P., Zuprański P., Zurek M.
institution:	JEDI collaboration
journal title:	Physical Review. Accelerators and Beams
volume:	20
issue:	7
date of publication :	2017
article ID:	072801
eISSN:	1098-4402 2469-9888
DOI:	10.1103/PhysRevAccelBeams.20.072801
language:	English
journal language:	English
abstract in English:	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 $\mu$ rad.
affiliation:	Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
type:	journal article
subtype:	academic paper