Chasman-Green lattice

Chasman-Green lattice

Renate Chasman and G. Kenneth Green were scientists at the U.S. Department of Energy’s Brookhaven National Laboratory in Upton, NY, who invented a special periodic arrangement of magnetic elements - a so-called magnetic lattice – to provide optimized bending and focusing of electrons in a new class of particle accelerator rings known as synchrotron light sources [1-3] . Each period of the Chasman-Green lattice contains a focusing quadrupole magnet symmetrically located between a pair of identical dipole magnets, which transports incident electrons through this bending arc to an exit path that is independent of the electron energy. The Chasman-Green lattice is thus also known as the double bend achromat (DBA) lattice.

An electron storage ring constructed with a Chasman-Green lattice has the important property that the circulating electron beams have very low emittance, which results in the emission of synchrotron light of exceptional brightness. For this reason the Chasman-Green lattice is the lattice of choice for most of the premier synchrotron light source facilities worldwide [4] .

1.) R. Chasman, G.K. Green and E.M. Rowe, IEEE Trans. Nucl. Sci. NS-22, 1765 (1975).
2.) R. Chasman and G.K. Green, BNL-21849 (1976)
3.) Proposal for a National Synchrotron Light Source, Ed, J. Blewett, BNL 50595, Vol. I (1977).
4.) Advanced Photon Source [http://www.aps.anl.gov] , European Synchrotron Radiation Facility [http://www.esrf.eu] , National Synchrotron Light Source [http://www.nsls.bnl.gov] and SPring-8 [http://www.spring8.or.jp]


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  • Chasman–Green lattice — The Chasman–Green lattice, also known as a double bend achromat lattice (DBA lattice), is a special periodic arrangement of magnets designed by Renate Chasman and G. Kenneth Green of Brookhaven National Laboratory in the mid 1970s. These lattices …   Wikipedia

  • Renate Chasman — Renate Wiener Chasman, geborene Wiener, (* 10. Januar 1932 in Berlin; † 17. Oktober 1977) war eine deutsch US amerikanische Physikerin, die sich mit der Physik von Teilchenbeschleunigern beschäftigte. Chasman war die Tochter von Hans Wiener,… …   Deutsch Wikipedia

  • Kenneth Green — George Kenneth Green, genannt Ken Green, (* 1911; † August 1977) war ein US amerikanischer Physiker, der sich mit Teilchenbeschleunigern beschäftigte. Green studierte an der University of California, Berkeley, wo er der Gruppe von Ernest Orlando… …   Deutsch Wikipedia

  • National Synchrotron Light Source — NSLS Aerial view of the NSLS. General information Type Research and Development Facility Town or city Upton …   Wikipedia

  • Storage ring — The 216 m circumference storage ring dominates this image of the interior of the Australian Synchrotron facility. In the middle of the storage ring is the booster ring and linac A storage ring is a type of circular particle accelerator in… …   Wikipedia

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