Author: Redaelli, S.
Paper Title Page
MOPGF099 Upgraded Control System for LHC Beam-Based Collimator Alignment 1
 
  • G. Valentino, G. Baud, M. Gąsior, S. Jackson, L.K. Jensen, J. Olexa, S. Redaelli, J. Wenninger
    CERN, Geneva, Switzerland
 
  In the Large Hadron Collider (LHC), over 100 movable collimators are connected to a three-tier control system which moves them to the required settings throughout the operational cycle from injection to collision energy. A dedicated control system was developed to align the collimators to the beam during machine commissioning periods and hence determine operational settings for the active run. During Long Shutdown 1, the control system was upgraded to allow beam-based alignments to be performed using embedded beam position monitors in 18 newly installed collimators as well as beam loss monitors. This paper presents the new collimation controls architecture for LHC Run II along with several modifications in the Java-based application layer.  
poster icon Poster MOPGF099 [1.414 MB]  
 
WEPGF066 A Systematic Measurement Analyzer for LHC Operational Data 1
 
  • G. Valentino, X. Buffat, D. Kirchner, S. Redaelli
    CERN, Geneva, Switzerland
 
  The CERN Accelerator Logging Service stores data from hundreds of thousands of parameters and measurements, mostly from the Large Hadron Collider (LHC). The systematic measurement analyzer is a Java-based tool that is used to visualize and analyze various beam measurement data over multiple fills and time intervals during the operational cycle, such as ramp or squeeze. Statistical analysis and various manipulations of data are possible, including correlation with several machine parameters such as β* and energy. Examples of analyses performed include checks of collimator positions, beam losses throughout the cycle and tune stability during the squeeze which is then used for feed-forward purposes.  
poster icon Poster WEPGF066 [2.270 MB]