The First 1 1/2 Years of TOTEM Roman Pot Operation at LHC
  Since the LHC running season 2010, the TOTEM Roman Pots (RPs) are fully operational and serve for collecting elastic and diffractive proton-proton scattering data. Like for other moveable devices approaching the high intensity LHC beams, a reliable and precise control of the RP position is critical to machine protection. After a review of the RP movement control and position interlock system, the crucial task of alignment will be discussed. 
M. Deile, G. H. Antchev, R. B. Appleby, R. W. Assmann, I. Atanassov,   V. Avati, J. Baechler, R. Bruce, M. Dupont, K. Eggert...
physics.ins-det