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Harmonic cavity design choice for lifetime increase in Diamond-II

DOI: 10.18429/JACoW-IPAC2019-TUPGW078 DOI Help

Authors: Teresia Olsson (Diamond Light Source) , R. Bartolini (Diamond Light Source) , I. P. S. Martin (Diamond Light Source)
Co-authored by industrial partner: No

Type: Conference Paper
Conference: IPAC2019
Peer Reviewed: No

State: Published (Approved)
Published: June 2019

Open Access Open Access

Abstract: The on­go­ing trend to­wards syn­chro­tron light stor­age rings with ul­tralow emit­tance leads to a re­quire­ment for strong mag­net gra­di­ents, which re­duce the dy­namic aper­ture and thus the Tou­schek life­time of the ma­chine. This is also the case for the planned up­grade of the Di­a­mond Light Source. One op­tion to in­crease the Tou­schek life­time is to lengthen the elec­tron bunches with a har­monic cav­ity op­er­ated close to a har­monic of the fun­da­men­tal RF fre­quency. This paper pre­sents stud­ies of a har­monic cav­ity for Di­a­mond-II with the focus on max­imis­ing the life­time in­crease. It is fore­seen that the ring will have to op­er­ate with a gap in the fill pat­tern to avoid in­sta­bil­i­ties and there­fore mul­ti­par­ti­cle track­ing was used to de­ter­mine the ef­fect on sta­bil­ity and life­time for var­i­ous cav­ity pa­ra­me­ters tak­ing into ac­count tran­sient beam load­ing.

Subject Areas: Technique Development


Technical Areas: Electrical Engineering

Documents:
tupgw078.pdf