Job opportunities

If you are interested in any of these positions, please contact us here.

Applied Fellow in FCC-ee Machine Detector Interface at CERN

Scope:

In the e+e- flavour of the FCC (FCC-ee), a very relevant task is the assessment of the various machine induced backgrounds and their impact on the detector performance, with an instantaneous luminosity reaching values as large as 10^36 /cm^2/s. Such backgrounds include synchrotron radiation from the final focus system situated extremely close to the interaction, beamstrahlung photons caused by bunch crossings with very small emittance, Bhabha radiative scattering, pair production from beamstrahlung photons, beam halo, beam gas, injection background, HOM, etc. In this early design stage, feedback from these studies to the main design parameters of the machine itself and to the interaction region (IR) layout in particular are of the utmost importance. This iterative process will in turn affect the definition of the maximum usable luminosity by the experiments at the various proposed energies (Z, WW, Higgs and tt threshold energies).

Tasks:

These studies are expected to contribute to the Conceptual Design Report due in 2018, just prior the next update of the European Strategy. The scope of this project, to be performed in collaboration with accelerator colleagues, includes: 1. the estimation of the SR and the other backgrounds in the experimental area; 2. the assessment of the effects of the various beam induced backgrounds to the energy flow in the calorimeters, tracking devices and luminosity monitor detector; 3. wherever relavant, the delivery of the software needed to perform Monte Carlo simulations of these backgrounds, if they are expected to affect experimental physics results; 4. the optimization of the detector geometry, shielding components and IR design to minimize sensitivity to machine background. The pp flavour of the FCC (FCC-hh) will have to face completely different challenges, that will need to be assessed when the machine parameters and the detector design are better specified. If time allows, the selected fellow will also participate to these studies at a later stage. 

Applied Fellow in FCC Software at CERN

Scope:

The mandate of the FCC physics software project is to develop and maintain common software for the FCC experiment and detector studies. This project will exploit the many synergies with and the existing expertise from LHC and linear collider software projects, but will tailor the final product for the specific needs of the FCC community of all flavours (ee, hh, eh). Two special emphases of this newly started effort are the integrated fast/full simulation approach and the preparation of the chosen data model for parallelization and vectorization.

Tasks:

The fellow will be required to work on the data model library, and on the development and validation of the simulation software. In a later stage, the fellow will be required to contribute to the development of reconstruction algorithms and their validation. The candidate will also contribute in the building and testing activities associated to providing new FCC software releases, with a special emphasis on parallelization and code performance.

Requirements:

- The candidate must have a physics background, and will need to be familiar with either the development of reconstruction algorithms or Monte Carlo simulations. Knowledge of parallelization techniques would be an asset.
- Experience with C++ programming on a Unix/Linux environment as well as skills on scripting languages would be also significant assets.