Tuning possibilities of the longitudinal beam shape of a racetrack microtron

W.H.C. Theuws, J.I.M. Botman, H.L. Hagedoorn, A.F.J. Hammen

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademic

Samenvatting

The beam shape in the longitudinal phase plane at the extraction point of an RTM strongly depends on the choice of the stable phase of the accelerating cavity. This is due to the fact that the main longitudinal focusing force is the derivative of the accelerating potential with respect to time (or phase). Furthermore, this focusing force is applied to the electron beam each turn, such that the output beam shape in the longitudinal phase plane is significantly affected. This effect can for instance be used in order to minimise the bunch length or the energy spread of the output beam of the RTM. For this paper we have used the lay-out of the Eindhoven RTM for the calculations of the stable-phase variations, which have been studied in linear approximation. The stable phase area for this RTM equals 18 degrees. It will be shown that stable-phase variations in the order of 1 degree already have a significant impact on the longitudinal beam shape. Furthermore, some remarks are made on the consequences of non-linear beam dynamics in relation to stable-phase variations.
Originele taal-2Engels
TitelProceedings 18th Particle Accelerator Conference
Plaats van productieNew York
Pagina's2825-2827
DOI's
StatusGepubliceerd - 1999
Evenement18th IEEE Particle Accelerator Conference (PAC'99), March 27-April 2, 1999, New York, NY, USA - New York, NY, Verenigde Staten van Amerika
Duur: 27 mrt 19992 apr 1999

Congres

Congres18th IEEE Particle Accelerator Conference (PAC'99), March 27-April 2, 1999, New York, NY, USA
Verkorte titelPAC'99
Land/RegioVerenigde Staten van Amerika
StadNew York, NY
Periode27/03/992/04/99
AnderParticle Accelerator Conference

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