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Preparations have been progressing steadily at CMS to receive collisions between protons and lead ions
For the last run before the two-year shutdown, the LHC is going beyond its original design specification and will collide protons with lead ions
CMS has published its first paper on proton-lead (p-Pb) collisions
The switch - a test for a longer proton-lead run scheduled for January to February 2013 - presented numerous technical challenges
