Figure 2 - uploaded by Anton Viktorovich Bogomyagkov
Content may be subject to copyright.
Source publication
Compact low emittance lattice cell providing large dynamic aperture is
essentual for development of extremely low (pm range) emittance storage rings.
As it is well known, a pair of identical sextupoles connected by a minus-identy
matrix transformer in ideal case of kick-like magnets provides infinite dynamic
aperture. Though the finite sextupole le...
Citations
... If the storage ring consists of similar compact periodic cells so that the betatron-phase increment between the sextupole lenses in a cell is small, in the isolated-resonance approximation for the ring DAs and the integral sextupole powers we have the scaling relations [22] (6) ...
... An alternative approach proposed in [22] is to form the pairs of sextupole lenses interrelated by the "minus-unity" (-I) optical transformation in both transverse coordinates. In this case, assuming vanishingly thin sectupole lenses, all geometric aberrations of the pair are known to cancel out [24] and the DA is infinitely large. ...
... x limit ( Å) [22]. The basic structure element is a superperiod consisting of five SM-TME cells (see Fig. 4). ...
Due to recent advances in the physics and technology of relativistic circular colliders, it is now possible to design storage rings whose emittance is close to the diffraction threshold of synchrotron radiation (ε ~ 10 pm for the radiation critical wavelength of λc ~ 1Å). Methods for minimizing emittance by optimizing the magnetic structure without reducing the dynamic aperture and the energy acceptance, as well as possible implementations of these methods, are discussed in this paper.
