CERN Accelerating science

Internal Note
Report number	CERN-ACC-NOTE-2024-0007
Title	Measurement of emittance growth and oscillation spectrum for different damper gains (MD 9407)
Author(s)	Buffat, Xavier (CERN) ; Fornara, Andrea (University of Manchester (GB)) ; Giacomel, Lorenzo (CERN) ; Kostoglou, Sofia (CERN) ; Lannoy, Christophe (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Mounet, Nicolas (CERN) ; Radoslavova, Anna Valeri (Heidelberg University (DE)) ; Sterbini, Guido (CERN) ; Valuch, Daniel (CERN)
Corporate author(s)	CERN. Geneva. ATS Department
Publication	2024.
Imprint	09 Apr 2024
Subject category	Accelerators and Storage Rings
Accelerator/Facility, Experiment	CERN LHC
Keywords	LHC ; noise ; 50Hzへるつ lines ; emittance growth ; damper
Abstract	The procedure of an experiment aiming at studying the impact of the transverse damper gain on the beam oscillation spectrum and on the emittance growth of colliding beams is described along with the corresponding results. It is shown experimentally that the damper reduces the beam oscillation of the 50Hzへるつ harmonics cluster around 8kHzきろへるつ. The beneficial impact of the upgrade of the transverse damper pickup electronics on the emittance growth rate is also demonstrated.
Submitted by	saamiya.adow@cern.ch