Abstract: We study the relative position of the electron and positron closed orbits in the VEPP-4M single storage ring collider in experiments on orbit precision monitoring. A difference in the orbits can affect the accuracy of several fundamental experiments, e.g. precise comparison of the electron and positron spin frequencies (the CPT invariance test). In this case, the spin precession frequencies of particles should be compared within at least 5·10−9. The distinction of frequencies depends on the features of the radial orbits. Ideally, the difference in the electron and positron orbits is set only by distributed radiation losses of particle energy. The corresponding contribution to the total orbit distortions is called the Saw-Tooth effect orbit. Another example of possible precision experiment at VEPP-4M is search for the light speed anisotropy (LSA). In this case, it is necessary to ensure a stability of the difference in the radial orbits of electrons and positrons at a level of 1 μm.

Cite: Bekhtenev E. , Karpov G. , Leshenok D. , Nikitin S. , Plotnikova O.
Observation of Saw-Tooth Effect Orbit at VEPP-4M Collider
Journal of Physics: Conference Series. 2018. V.1067. 072021 :1-5. DOI: 10.1088/1742-6596/1067/7/072021 WOS Scopus РИНЦ AN OpenAlex

Dates:

Submitted:	Jul 20, 2018
Published online:	Oct 5, 2018

Identifiers:

Web of science:	WOS:000526179000130
Scopus:	2-s2.0-85054907426
Elibrary:	38642940
Chemical Abstracts:	2018:2516234
OpenAlex:	W4250363621

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