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Macina, D.

Paper Title Page
MOPLS002 The Study of the Machine-induced Background and its Applications at the LHC 529
 
  • V. Talanov, I. Azhgirey, I. Baishev
    IHEP Protvino, Protvino, Moscow Region
  • D. Macina, K.M. Potter, E. Tsesmelis
    CERN, Geneva
  
  We present the recent advances in the analysis of the machine-induced background generation and formation at the LHC. Different aspects of the study of the machine background problem at the LHC are reviewed, including the background production at the different stages of the machine operation, the role and influence on the background from the collimators in the experimental insertions and the background shielding. The potential use of the machine background for the purposes of detector testing and alignment is also discussed.  
MOPLS003 Tertiary Halo and Tertiary Background in the Low Luminosity Experimental Insertion IR8 of the LHC 532
 
  • V. Talanov
    IHEP Protvino, Protvino, Moscow Region
  • R.W. Assmann, D. Macina, K.M. Potter, S. Redaelli, G. Robert-Demolaize, E. Tsesmelis
    CERN, Geneva
  
  In our report we present the results for numerical simulation of tertiary halo and tertiary background in the LHC. We study the case of the proton losses in the betatron cleaning insertion IR7 with the subsequent tertiary halo generation in the downstream experimental insertion IR8. We analyze the formation of tertiary background in the experimental area of the IR8 and evaluate the performance of the machine-detector interface shielding with respect to this source of the background. The results obtained are compared with the previous estimates of the machine-induced background in the low luminosity insertions of the LHC, and the balance between different sources of the background is discussed.  
MOPLS004 Estimation and Analysis of the Machine-induced Background at the TOTEM Roman Pot Detectors in the IR5 of the LHC 535
 
  • V. Talanov
    IHEP Protvino, Protvino, Moscow Region
  • V. Avati
    Helsinki University, Department of Physics, University of Helsinki
  • M. Deile, D. Macina
    CERN, Geneva
  
  The problem of background generation in the experimental insertion IR5 of the LHC during machine operation in the dedicated TOTEM mode with low intensity beams and the specially designed beta* = 1540 m optics is discussed. The sources of the machine-induced background in the IR5 forward physics areas are identified and their relative importance is evaluated. The results of the background simulation in the IR5 are presented, based on the most recent estimates of the residual gas density for TOTEM beam conditions. The methods for background analysis and rejection are explained.