Programme

Medsi School2 Programme_221019.PNG

 

Photon source physic:  Duration 40 mn

This lecture gives an overview of diverse photon sources, with e-beam properties. It describes the relation between the electron and photon beams. Issues for insertion device instruments are given.

Electron dynamics and storage ring:  Duration 40 mn

This lecture provides a short review of the key issues in electron beam dynamics, orbit aspects, instabilities. It is aimed at widening the vision of beam physics which is useful for understanding key concepts for instrumentation designers.

Thermal physics:  Duration 60-90mn

This lecture gives “more” issues about heat transfer and thermal processes, with their related analysis.

It covers conduction, convection, irradiation, contact, radiation (Compton) scattering from beam. It is a multimodal approach to thermal design for Synchrotron components.

Topics covered: Storage ring absorbers, and high heatload components, thermal stress and fatigue, thermal aspect for precision devices, thermal stability, introduction to crystal and optics cooling, introduction to cryocoolers.

Thermal design applications- exercises and review: Duration 90mn

This time slot will propose application exercises dealing with X-ray beam thermal processes.

Depending on the number of participants, live solution tracking may not be possible. A more practical solution may be to explore pre-calculated solutions, described in detail, with question & answer sessions.

White beam mirrors, Monochromators, Storage Ring absorbers, thermal stability requirements.

Fluids mechanics dedicated to cooling – CFD aspects with LN2:  Duration 90mn

This lecture will focus on the use of fluid mechanics. What are the turbulence, the boundary layers, laminar and turbulent flow, for water processes and LN2 cryo-cooling.

For mechanical design engineers, it should give a description of the best use of fluid correlations, and their relations with fundamentals, thus how a calculation can be driven?

The concept of critical heat flux (CHF) will be explained, as well as how to deal with it.

The concepts of computed fluid mechanics (CFD) will be described, and what to do with results qualification.

Material advanced keys:  Duration 90mn

This lecture should give hints and tips for materials selection parameters for instrumentation use. A macroscopic approach to design and how to select the material type according to functionalities, plus a microscopic approach to analyse how material configuration should be considered for the given functionalities.

This lecture should emphasise the interaction between these scaling effects. A review of the specification fundamentals will be proposed.

Beamline simulation package, the Oasys overview:  Duration 90mn

This lecture is a presentation of the simulation tool, Oasys. It enables engineers to deal with X-ray power issues, both from the source and the beamline optics. It enables to consider the emitted power from the source point, the role of the high power primary slit, and the different attenuation processes for optics. One of the major interests is to quantify the white beam power aspects of the beamline.

Keywords: Source spectrum, white/pink beam, reflectivity, monochromator crystals, focusing mirrors, slits.

Oasys, application example:  Duration 90mn

This is an Oasys hand-ons session based on real beamline simulation.

Students will operate a Windows version of Oasys downloaded onto their personal computer. The school site will propose a link to download the package prior to arrival. (Downloading can be coached as well, prior to the application lecture).

Precision systems:  Duration 90mn

This lecture gives an overview of the design basics for precision positioning systems. Starting from the specification of a system, the standard definitions of positioning errors will be addressed. Some key steps of the engineering process will then be covered: conceptual design, system analysis, budget error, technologies of motorised systems, dynamic and thermal disturbances, metrology.

Mechatronic systems:  Duration 90mn

This lecture gives an overview of mechatronic analysis basics. Items covered are:

Qualifying dynamic aspects of a system, explaining the frequency domain, and its Laplace transforms, dynamic stiffness, the mass spring damper system. Combining transfer functions for a system analysis.

These topics will enable engineers to handle concepts used for dynamic analysis, making distinction between open loop and closed loop analysis.

As this domain is extremely wide, the lecture will deal with instrument vision, the second order system, and its related multibody dynamics.

Vibration and stability for systems:  Duration 90mn

This lecture is a continuation of the preceding one. The instrument is analysed from the disturbance aspects. The transfer function is then arranged to highlight any amplification process, how to deal with a minimisation of these performance degradations, mode shape analysis, spectral response, both in terms of mechanical and thermal stabilities.

Mechatronics applications – hands-on: several coaches Duration 90mn

The concepts should be applied, with first level examples. Some advanced realisations are presented. Works should be processed with shared works in small groups.

Beamline optics, a review:  Duration 90mn

This lecture aims to present to engineers the basic principles behind the different types of X-ray optics encountered at X-ray beamlines and some of the aspects to be considered when optimising the optical scheme for a beamline.

Course content will cover upstream beam conditioning optics as well as technologies for focusing the X-ray beam to nano-metric dimensions at the sample.

Opto-mechanicals, fundamentals:  Duration 90mn

An introduction/advanced review of thermal and cooling design conditions should be given, essentially for optic components. With this lecture, pupils could go better into detail with white beam operation: what are the design knowledge, what physics, what calculation methods, what can be optimised?

Calculation methodology will be given, enabling to develop more accurate and predicting solutions. Domains like cryo-cooling for crystals, optimisation of mirror shape, will be described.

Opto-mechanics, engineering review: ESRF lecturer Duration 90mn

This lecture is dedicated to engineering considerations for optics. Low drift design, fine angular pointing, low vibration sensitivity, are explained. Optics architectural design is proposed, with practical realisations, precision devices, sensor location. In this way, the ESRF would offer examples of its own experience, but other realisations will also be considered.

Opto-mechanics applications: ESRF coaches Duration 90mn

This application course should illustrate through examples how the criteria are processed: White beam mirrors, benders, KBs, CRLs, crystal mounts, LN2 cooling. Designing an x-ray mirror (Spectral filter, focusing…), or a monochromator. The application could also cover a storage ring girder system or end-station design.