Protection Devices in the Transfer Lines to the LHC

Beams will be transferred from SPS to LHC through two transfer lines, each of over 2.5 km length, equipped with conventional resistive magnets with relatively small apertures. Beam energy densities will be roughly 4 orders of magnitude above the LHC quench limit and about one order above damage level. Possible failures of the various elements in the transfer lines and the SPS machine are discussed, together with results from tracking studies. The benefit from installing protection devices in the transfer lines is discussed, along with related layout aspects and the required protection performance.