PhD Position in Electromagnetic Theory at Lund University, Sweden
Type of employment: Limit of tenure, 4 years
Extent: 100 %
Location: Department of Electrical and Information Technology, Lund
First day of employment: As soon as possible
Official Records Number: LTHPA 2011/886
Extent: 100 %
Location: Department of Electrical and Information Technology, Lund
First day of employment: As soon as possible
Official Records Number: LTHPA 2011/886
The project is to be carried out at the department of Electrical and Information Technology (EIT) in Lund, at the European Spallation Source (ESS) in Lund, and at the Commissariat à l'Energie Atomique (CEA) in Saclay, France. Roughly half of the time will be spent at CEA in Saclay. In Saclay the project is supervised by Prof. Guillaume Devanz, and at EIT by Prof. Anders Karlsson.
The student will collaborate with a group at CEA that is world leading in the design of cavities for accelerators. Since the ESS is a unique plant much of the research will be novel.
The student will collaborate with a group at CEA that is world leading in the design of cavities for accelerators. Since the ESS is a unique plant much of the research will be novel.
Job assignments
The thesis work covers the domain of intermediate beta multicell superconducting cavity design for the high intensity proton linac of the ESS.
The student will study the interplay of RF properties of cavities, namely efficiency, peak surface fields, higher order modes (HOM) generation by the pulsed proton beam, higher order mode damping and operational properties among which tuneability, mechanical stability, Lorentz force detuning, limitations of the RF superconductivity, and of course feasability.
The outcome of this first conceptual design phase should be a clear picture of the most important cavity parameters for the ESS application and criteria on which to base a strong design. A cavity geometry will then be proposed as a conceptual design. The second phase of the work deals with the optimization of the electromagnetic properties of this first design to reduce peak fields, improve the cavity efficiency and a detailed electromagnetic study of the HOM dampers.
The student will study the interplay of RF properties of cavities, namely efficiency, peak surface fields, higher order modes (HOM) generation by the pulsed proton beam, higher order mode damping and operational properties among which tuneability, mechanical stability, Lorentz force detuning, limitations of the RF superconductivity, and of course feasability.
The outcome of this first conceptual design phase should be a clear picture of the most important cavity parameters for the ESS application and criteria on which to base a strong design. A cavity geometry will then be proposed as a conceptual design. The second phase of the work deals with the optimization of the electromagnetic properties of this first design to reduce peak fields, improve the cavity efficiency and a detailed electromagnetic study of the HOM dampers.
Eligibility/Entry Requirements
Master's degree in EE, Engineering Physics, or related subject.Basis of Assessment
The student should have a good knowledge in electromagnetics. Experience of microwave theory and technique is an advantage. In the selection of the candidate, the following aspects are taken into account: marks from Master courses; quality of Master's thesis and possibly other projects showing independent work; previous experience in the area of microwave technique; technical interview with the candidate.
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