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Reference : UMR5814-CLABOM-064
Workplace : ANNECY LE VIEUX
Date of publication : Friday, December 17, 2021
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 April 2022
Proportion of work : Full time
Remuneration : between 2663,79 € and 3069,06 € monthly gross, according to work experience
Desired level of education : PhD
Experience required : Indifferent
The CNRS LAPP (Laboratoire d'Annecy de Physique des Particules) institute is opening a 24-month postdoctoral position for the development of new tracking algorithms, based on innovative machine learning techniques. The objective is to prepare for the exploitation of the data that will be collected by the ATLAS experiment during the High Luminosity phase of the Large Hadron collider (HL-LHC) located at CERN, Switzerland. This position is funded by ANR, within the new project ATRAPP, a collaboration between two french laboratories: LAPP Annecy and IJCLab Orsay, with a recognized expertize in computing, GPU programming and machine learning developments for HEP. We are seeking candidates with a strong background in machine learning techniques. Application will be collected until the 15th of February 2022, and the position could start as early as the 1st of April 2022.
The successful candidate will lead new machine learning developments to improve several aspects of the existing tracking software, with a special emphasis on seeding and the reconstruction of anomalous tracks, while accounting for time-dependent detector conditions. The code developments will be done within the ACTS framework, an experiment-independent toolkit for charged particles track reconstruction. The most promising developments will later be imported into the ATLAS experiment software, and validated on real data, collected during Run 3. The successful candidate will closely collaborate with other ATRAPP members at LAPP and IJCLab, as well as tracking experts based mostly at CERN. In the course of the project, the GPU farm and the DNN expertise already available at LAPP will certainly be beneficial. The candidate will travel regularly to CERN (50 km from LAPP) and is expected to report about her/his progress in collaboration meetings, conferences and workshops.
• The candidate must hold a PhD in software/computing or in High Energy Physics
• A strong experience in software development is required
• Deep knowledge of machine learning techniques is mandatory
• Prior knowledge of tracking and GPU usage is optional but will add value
• Good communication skills and a collaborative spirit
• Working autonomy and proactivity
• English written/spoken level B2 minimum
Desired work experience: maximum of 2 years after PhD.
Applicants must submit a cover letter explaining their interest in the position and a detailed curriculum vitae (containing a description of their research experience with a list of publications highlighting their personal contributions).
Have referrals to send at least 2 letters of recommendation directly to
LAPP is a laboratory of the Institute of Nuclear Physics and Particle Physics (IN2P3), an institute of the National Center for Scientific Research (CNRS), which coordinates programs in these fields. LAPP is a joint research unit (UMR 5814) of the CNRS and the University of Savoie Mont-Blanc (USMB). More than 150 researchers, teacher-researchers, engineers, technicians, administrators, students and foreign visitors work there. The research carried out at LAPP aims to study the physics of elementary particles and their fundamental interactions, as well as to explore their links with the great structures of the Universe. The work of the LAPP teams aims, among other things, to understand the origin of the mass of particles, to unravel the mystery of dark matter or to determine what happened to the anti-matter present in our universe at the time of the Big Bang.
The post-doctoral position is funded through the ATRAPP ANR 2021 grant, and dedicated to the developments of new tracking algorithms to fully exploit the new capabilities of the next ATLAS inner silicon tracker (ITk). The final design of this tracking detector is currently being finalized, and the pre-production of its components is starting. Its construction will begin in 2023, and parts of this detector will be assembled at LAPP.
Constraints and risks
Some short trips have to be planned at CERN and abroad
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