Editing Magnetic mirror (section)

== Biconic cusps ==
[[File:Biconic Cusp.jpg|thumbnail|A biconic cusp]]
{{main|Biconic cusp}}

If one of the poles in the magnetic bottle is reversed, it becomes a [[biconic cusp]], which can also hold charged particles.<ref>The motion of a charged particle near a zero field point (in english). New York: New York University: Courant Institute of Mathematical Sciences,. 1961.</ref><ref>{{cite report |last=Grad |first=H. |date=December 1, 1957 |title=Theory of Cusped Geometries, I. General Survey, NYO-7969 |location=Institute of Mathematical Sciences, New York University}}</ref><ref>{{cite report |last1=Berowitz |first1= |last2=Grad |first2=H. |last3=Rubin |first3=H. |date=1958 |title=Proceedings of the second United Nations International conference on peaceful uses of atomic energy |location=Geneva |volume=31 |page=177}}</ref> Biconic cusps were first studied by [[Harold Grad]] at the [[Courant Institute]], studies reveal the presence of different types of particles inside a biconic cusp. The most financed cusp approach is the [[Lockheed Martin Compact Fusion Reactor|Compact Fusion Reactor]] which was supported by Lockheed-Martin starting in 2007.<ref>{{cite report |last=McGuire |first=Thomas |date=6 August 2015 |title=The Lockheed Martin Compact Fusion Reactor; Thursday Colloquium Lecture |location=Princeton University, Princeton}}</ref>