IPAC2013 - List of Authors (Moens, V.)

Paper	Title	Page
MOPWO050	Comparison of LHC Beam Loss Maps using the Transverse Damper Blow up and Tune Resonance Crossing Methods	1008
	V. Moens, R. Bruce, S. Redaelli, B. Salvachua, G. Valentino CERN, Geneva, Switzerland V. Moens EPFL, Lausanne, Switzerland G. Valentino University of Malta, Information and Communication Technology, Msida, Malta
	The LHC collimator settings are qualified regularly via beam loss maps. In this procedure, the beam is artificially excited to create abnormal loss rates. The transverse damper blow up and tune resonance crossing methods are used to increase the betatron amplitude of particles and verify the efficiency of the collimation cleaning and the collimator hierarchy. This paper presents a quantitative comparison of the methods, based on measurements done at different phases of the LHC machine cycle. The analysis is done using Beam Loss Monitor (BLM) with integration times of 1.3 s and 80 ms. The use of the faster BLM data to study the time evolution of the losses in IR3 and IR7 during off-momentum loss maps is also presented.

Paper

Title

Page

Comparison of LHC Beam Loss Maps using the Transverse Damper Blow up and Tune Resonance Crossing Methods

1008

V. Moens, R. Bruce, S. Redaelli, B. Salvachua, G. Valentino
CERN, Geneva, Switzerland
V. Moens
EPFL, Lausanne, Switzerland
G. Valentino
University of Malta, Information and Communication Technology, Msida, Malta

The LHC collimator settings are qualified regularly via beam loss maps. In this procedure, the beam is artificially excited to create abnormal loss rates. The transverse damper blow up and tune resonance crossing methods are used to increase the betatron amplitude of particles and verify the efficiency of the collimation cleaning and the collimator hierarchy. This paper presents a quantitative comparison of the methods, based on measurements done at different phases of the LHC machine cycle. The analysis is done using Beam Loss Monitor (BLM) with integration times of 1.3 s and 80 ms. The use of the faster BLM data to study the time evolution of the losses in IR3 and IR7 during off-momentum loss maps is also presented.