Author(s)
|
Salvachua, B (CERN) ; Valentino, G (CERN) ; Aberle, O (CERN) ; Albertone, J (CERN) ; Athanasiadis, S (CERN) ; Baglin, V (CERN) ; Bertarelli, A (CERN) ; Boccard, C (CERN) ; Bruce, R (CERN) ; Carra, F (CERN) ; Cattenoz, G (CERN) ; Chemli, S (CERN) ; Coupard, J (CERN) ; Derrez, C (CERN) ; Esposito, L (CERN) ; Folch, R (CERN) ; Lamas, I (CERN) ; Lendaro, J (CERN) ; Losito, R (CERN) ; Marsili, A (CERN) ; Masi, A (CERN) ; Mirarchi, D (CERN) ; Quaranta, E (CERN) ; Redaelli, S (CERN) ; Rossi, A (CERN) ; Sexton, I (CERN) |
Abstract
| The LHC collimation system has undergone an important upgrade during LS1. A
total of 32 collimator installations are taking place to consolidate and improve
the Run 1 system. This includes 18 new collimators with embedded beam positions
monitors (BPMs), additional physics debris collimators, additional passive
absorbers and re-installation or displacement of existing collimators. This
paper summarizes the post-LS1 collimation layout, highlighting the expected
gains from each modification, and the readiness of the new collimation hardware
for commissioning without and with beam. Special emphasis is devoted to the new
software for the control and configuration of the BPM colli-mators. A proposal
for the necessary beam conditions during collimation alignment and validation
with loss maps at 6.5 TeV is also discussed, including a strategy for the
machine protection aspects. A list of early machine development studies is
proposed. |