Publications (6)
Effect of Crab cavity HOMs on the coupled-bunch stability of HL-LHC
Sergey Antipov, Nicolo Biancacci, Jani Komppula +2
High frequency High Order Modes can significantly affect the coupled-bunch stability in a circular accelerator. With a large enough shunt impedance they may drive a coupled-bunch t…
Beam Coupling Impedance of the LHC TCTP Collimators
Hugo Day, Fritz Caspers, Alessandro Dallocchio +5
As part of an upgrade to the LHC collimation system, 8 TCTP and 1 TCSG collimators are proposed to replace existing collimators in the collimation system. In an effort to review al…
Evaluation of the Beam Coupling Impedance of New Beam Screen Designs for the LHC Injection Kicker Magnets
Hugo Day, Michael Barnes, Fritz Caspers +3
During the 2011 run of the LHC there was a significant measured temperature increase in the LHC Injection Kicker Magnets (MKI) during operation with 50ns bunch spacing. This was du…
Coaxial Wire Measurements of Ferrite Kicker Magnets
Hugo Day, Michael Barnes, Fritz Caspers +4
Fast kicker magnets are used to inject beam into and eject beam out of the CERN accelerator rings. These kickers are generally transmission line type magnets with a rectangular sha…
High intensity proton beam impact at 440 GeV/c on Mo and Cu coated CfC/graphite and SiC/SiC absorbers for beam intercepting devices
Jorge Maestre, Cristina Bahamonde, Inigo Lamas Garcia +14
Beam Intercepting Devices (BIDs) are essential protection elements for the operation of the Large Hadron Collider (LHC) complex. The LHC internal beam dump (LHC Target Dump Injecti…
Comparison of the current LHC Collimators and the SLAC Phase 2 Collimator Impedances
Hugo Day, Fritz Caspers, Elias Metral +2
One of the key sources of transverse impedance in the LHC has been the secondary graphite collimators that sit close to the beam at all energies. This limits the stable bunch inten…