Super Large Hadron Collider
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The Super Large Hadron Collider (SLHC) is a proposed upgrade to the Large Hadron Collider to be made around 2015. The upgrade aims at increasing the luminosity of the machine, allowing a greater reach for rare processes and improvement of statistically marginal measurements. There exist many different paths to the upgrade. A collection of different designs of the high luminosity interaction regions is being maintained at [1]. A workshop was held on 2006 to establish which are the most promising options [2]. A comprehensive press article on this workshop can be found at the [3]. A summary of the possible machine parameters can be found at [4]. These references show that effective ways to increase luminosity are mainly: reduction of beam size at the collision point, and either reduction of bunch length and spacing, or significant increase in bunch length and population. The maximum integrated luminosity increase of the existing options is about a factor of 4 higher than the to the LHC ultimate performance, unfortunately far below the LHC upgrade project's initial ambition of a factor of 10.
The resultant higher event rate poses important challenges for the particle detectors located in the collision areas[5].
