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          Institute: MPI für Kernphysik     Collection: Physics of Quantum Dynamics in Atomic Fragmentation     Display Documents

ID: 522318.0, MPI für Kernphysik / Physics of Quantum Dynamics in Atomic Fragmentation
Higher order mode analysis of the SPL Cavities
Authors:Schuh, M.; Gerigk, F.; Tückmantel, J.; Welsch, C. P.
Date of Publication (YYYY-MM-DD):2010
Title of Journal:Joint Accelerator Conferences Website (JACoW)
Volume (in Journal):IPAC10
Start Page:4713
End Page:4715
Sequence Number:THPE082
Physical Description:electronic resource
Name of Conference/Meeting:The first International Particle Accelerator Conference
Place of Conference/Meeting:Kyoto, Japan
(Start) Date of Conference/Meeting
End Date of Conference/Meeting 
Review Status:not specified
Audience:Experts Only
Abstract / Description:Higher Order Modes (HOMs) can severely limit the operation
of superconducting cavities in a linac with high beam current, high duty factor and complex pulse structure.
The full HOM spectrum has to be analyzed in order to identify potentially dangerous modes already during the
design phase and to define their damping requirements. For
this purpose a dedicated beam simulation code focused on
beam-HOMinteraction was developed, taking into account important effects like the HOMfrequency spread, beam input
jitter, different chopping patterns, as well as klystron
and alignment errors. Here, the code is used to investigate
in detail the HOM properties of the cavities foreseen
in the Superconducting Proton Linac (SPL) at CERN and
their potential to drive beam instabilities. Special attention is given to HOM excitation by chopped pulses with high repetition rate.
External Publication Status:published
Document Type:Conference-Paper
Affiliations:MPI für Kernphysik/Independent Research Groups/Quantum Systems and Advanced Accelerator Research (C. Welsch)
External Affiliations:CERN, Geneva, Switzerland
Cockcroft Institute and the University of Liverpool, UK
Identifiers:URL: [open access]
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