Contribution to a conference proceedings

GSI-2024-01059

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Entropy Production and Emittance Growth Due to the Imperfection in Long Periodical Acceleration Chains

Droba, M. (Corresponding author) ; Meusel, O. ; Podlech, H. ; Reimann, S.GSI*

2022
JACoW Publishing, Geneva, Switzerland

Please use a persistent id in citations: doi:10.18429/JACOW-IPAC2022-WEPOMS021  doi:10.15120/GSI-2024-01059

Abstract: Contemporary design of efficient linear accelerator is based on ideal periodical structures with an optimi-sation for perfect periodicity. However, practical reali-sation involves random errors in the structure (e.g. position of elements, off-sets, non-linearity of the fields etc.) which make prediction of emittance growth difficult. Error studies helps to understand critical points, but they are normally used at the end of the design process. The concept of beam entropy in very simple approximation (assumption of Ornstein-Uhlenbeck model) is used to evaluate emittance growth in perfect periodical chains. The analysis will be performed and differences in modern designs on some examples discussed. Focus will be laid on linac designs with short acceleration structures (RF-phase settings versus position error) and external transversal focusing magnets.

Keyword(s): Accelerator Physics ; MC5: Beam Dynamics and EM Fields

Note: Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license.

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Contributing Institute(s):

1. Betrieb (OPE)
2. Helmholtz ForschAkad Hess. f. FAIR, HFHF (FHF)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. SUC-GSI-Frankfurt - Strategic university cooperation GSI-U Frankfurt/M (SUC-GSI-FR) (SUC-GSI-FR)
3. Accelerator physics (HFHF project) (I:(DE-Ds200)HFHF-ACC) (I:(DE-Ds200)HFHF-ACC)

Experiment(s):

1. no experiment theory work (theory)

Appears in the scientific report 2022

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Database coverage:
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