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Apresentação I Candidaturas I Informações Úteis I Contactos | Relatório 1996-2009

Oportunidades CERN I Oportunidades ESA I Oportunidades ESO

Bolsas para Estágio no
CERN - Laboratório Europeu de Física de Partículas

Concurso para apresentação de candidaturas
aberto até 30 de Setembro de 2011

Lista de Oportunidades

A lista de oportunidades está organizada por áreas tecnológicas. Seleccione a área do seu interesse para ter acesso às oportunidades disponíveis e consulte a área Candidatura para mais informações sobre como se candidatar.

Accelerator Physics(3)
Applied Physics
Chemistry
Computing
Data Handling
Electrical Engineering
Electronics Engineering
Exp. Applied Physics
General Engineering
Materials Science
Mechanical Engineering
Surveying
Other

Job Code	BE1602
Department	BE
Discipline	Accelerator Physics
Description	Description of the proposed activity (over 3 years) : the activity will be in the framework of LINAC4 at CERN. The activity will involve both beam dynamics calculations, electrodynamics calculation as well as measurements. The chosen candidates will get familiar with the physics, mathematics and computational aspects of calculating the electromagnetic field in resonant RF cavities and tracking a bunch of charged particles in an electric and magnetic field, with special emphasis on the problematic of high intensity beam (space charge, halo formation, losses minimisation). In a second phase , having acquired the computational tools and the necessary knowledge of beam physics each candidates will participate in one of the following activities : the measurements of the transverse and longitudinal beam quality at the 3 MeV LINAC4 test stand or the final tuning, conditioning, setting-up and operation of the three Radio-frequency accelerating structures of the 3 MeV LINAC4 test stand. The candidates, under the supervision of a small team of physicists, will operate the halo detector under varying beam condition, will analyse the data and will draw conclusions for the design of the following accelerator. This offers is for two positions
Special Requirements	university degree in physics or engineering
Training Value	The chosen candidates will get familiar with the physics, mathematics and computational aspects of calculating the electromagnetic field in resonant RF cavities and tracking a bunch of charged particles in an electric and magnetic field, with special emphasis on the problematic of high intensity beam (space charge, halo formation, losses minimisation).
Supervisor	ALESSANDRA LOMBARDI

Job Code	BE1702
Department	BE
Discipline	Accelerator Physics
Description	Beam Dynamics Studies for the PSB with Linac4: ------------------------------------------------------------------ Linac4 is at present constructed at CERN to provide a 160 MeV H- beam to the PS Booster (PSB) synchrotron. The aim is to improve the performance of the PSB mainly by alleviating direct space charge effects due to the higher injection energy. Simulations of beam dynamics with strong direct space charge forces, i.e. taking the Coulomb forces acting between different beam particles into account are carried to better estimate and, possibly, optimize the performance expected for the PSB with Linac4.
Special Requirements	university degree in physics or engineering
Training Value	beam dynamics physics , computational tecniques, space charge
Supervisor	CHRISTIAN CARLI

Job Code	TE683
Department	TE
Discipline	Accelerator Physics
Description	Title: ELECTRON CLOUD SUPPRESSION Development of thin films of low secondary electron yield and of a novel apparatus for their characterisation. Motivation: Electron cloud instabilities are one of the limiting phenomena of existing and future particle accelerators. In general, the e-cloud escalation can be suppressed by reducing the secondary electron yield (SEY) of the surfaces that form the vacuum vessel. Therefore, it comes out that any step forward in reducing SEY by surface treatments and modifications represents a key advancement in accelerators development. The MME-CCS section proposes to invest manpower for the next two years in order to: - modify the existing XPS system by adding an apparatus for the measurement of SEY on samples; - design, produce and operate a system for in-vacuum transport of samples from accelerator environments to the modified XPS. - characterise several thin films as a function of surface composition, production parameters, and electron dose received; - resume the knowledge (acquired 15 years ago for the development of the LEP2 cavities) on nitride and carbo-nitride metal films production; - develop production systems for medium and large scale production of innovative low SEY films.
Special Requirements	University degree in physics or material science or applied physics. Knowledge of vacuum technology, surface physics and thin films production would be an advantage.
Training Value	Ultra High Vacuum, surface science, thin films coating by magnetron sputtering, getter characterization.
Supervisor	SERGIO CALATRONI

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