Model Coupled Accelerator Tuning

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dc.contributor.authorShelbaya, Olivier
dc.contributor.supervisorKester, Oliver
dc.contributor.supervisorKarlen, Dean
dc.date.accessioned2023-02-27T18:17:31Z
dc.date.available2023-02-27T18:17:31Z
dc.date.copyright2023en_US
dc.date.issued2023-02-27
dc.degree.departmentDepartment of Physics and Astronomyen_US
dc.degree.levelDoctor of Philosophy Ph.D.en_US
dc.description.abstractRelativistic charged particle optics in the context of accelerator physics have been treated using transfer matrix methods since the 1950s. The realization that a hyperellipsoidal charged particle distribution could likewise be transformed if its 6-dimensional covariance matrix was used, with diagonal elements as the squared sizes, allowed for a computationally efficient and generalizable means to perform beam optics studies and analysis. Initially confined to elements with constant focal strengths, representable as square functions along the reference orbit and limited to constant energy beamline sections, such methods have not been applied to accelerated beam envelopes. Instead, the latter have to date been reserved for multiparticle simulations, more computationally taxing. The envelope code TRANSOPTR, developed at Chalk River Nuclear Laboratories in the late 1970s, added to the repertoire of envelope simulation capabilities by using a quadraticized Hamiltonian about a Frenet-Serret reference particle frame, for numerical integration of beam envelopes subject to scalar and vector potentials, including time-dependency. In this work, the beam-envelope simulation capabilities of TRANSOPTR are extended to include rf quadrupole accelerators and applied to include drift tube linear accelerators, enabling a full envelope model of the ISAC-I linac, leading to the identification of a long standing issue with its design tune. A corrective tuning prescription is elaborated for the ISAC-DTL. The novel tuning method significantly reduces accelerator operation complexity and therefore overhead time, by coupling machine tuning to parallel, beam diagnostic fed simulations. The generalizibility of the MCAT approach and speed of TRANSOPTR produce a suitable candidate for site-wide roll-out as the standard feedback driven accelerator tuning control software.en_US
dc.description.scholarlevelGraduateen_US
dc.identifier.urihttp://hdl.handle.net/1828/14804
dc.languageEnglisheng
dc.language.isoenen_US
dc.rightsAvailable to the World Wide Weben_US
dc.subjectacceleratoren_US
dc.subjectlinacen_US
dc.subjectbeamen_US
dc.subjectRFQen_US
dc.subjectDTLen_US
dc.subjectTRIUMFen_US
dc.subjectparticle acceleratoren_US
dc.subjectTRANSOPTRen_US
dc.subjectenvelopeen_US
dc.subjectoptimizationen_US
dc.subjecttuneen_US
dc.subjecttuningen_US
dc.subjectphysicsen_US
dc.subjectmodel coupled accelerator tuningen_US
dc.subjectisotope separator and acceleratoren_US
dc.subjectISACen_US
dc.subjectRIBen_US
dc.subjectradioactiveen_US
dc.subjectrelativisticen_US
dc.subjectachromaticen_US
dc.subjectchromaticen_US
dc.subjectseparated functionen_US
dc.titleModel Coupled Accelerator Tuningen_US
dc.typeThesisen_US

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