File:Smog2 Velo tracking efficiency

English: Here we can see how it opens.<br>
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The core idea of the project, called SMOG2, is the use of a storage cell for the injected gas to be installed upstream of the VELO detector. The main advantage of the proposed system is to increase by up to two orders of magnitude the effective target areal density, thus resulting in a significant increase of the luminosity for fixed-target collisions. Other important advantages are the possibility to inject additional gas species, including H2 and D2, a better defined interaction region, displaced with respect to the nominal interaction point, and thus possibly compatible with running in parallel to the collider mode (resulting in a further huge increase in luminosity). A technical design of the target system is presented together with a description of the installation procedure. Impedance properties and Electron Cloud effects have been studied for the proposed system, and the possible beam instabilities estimated. The geometry of the system has