Postdoctoral position - Integration of future CMS tracker sub-detectors for HL-LHC

Save as a favourite Create job alert

Short description

The LIO Laboratory of Excellence (LabEx) proposes a 2-year post-doctoral position.

Starting date: October the 1st, 2022

The net salary (+social benefits) will depend on experience. A €3,000 annual package for travels and equipment will be allotted.

Research project (1/2 page – 1 page)

            The IP2I is a founding member of CMS experiment and had a key role in the development, installation and commissioning of the electromagnetic calorimeter and tracking detectors. The group has also made important contributions in the area of top quark physics and in the area of Higgs boson searches and measurements. In addition, the group is involved in the upgrade of CMS detector for the High Luminosity LHC (HL-LHC, starting in 2027). Constructing the best detectors to collect data from the HL-LHC is of utmost importance to improve our understanding of the generation of mass in the Universe, solve anomalies observed at the LHC and possibly discover new particles.

            The current CMS tracker will need to be completely replaced for the HL-LHC, to sustain the radiation level induced by the large increase in LHC luminosity. The IP2I has important responsibilities in the production and assembly of the future tracker endcaps (called TEDD detector). The construction of the TEDD mechanical structures (so-called ‘Dees’) and their integration at IP2I will be performed in the next years within the LIO Clean room. These operations comprise Dee production, Dee mechanical and thermal qualification, the mounting of the silicon detector modules onto the Dees and a battery of detector module tests. The two last operations are called the “integration phase” (2023-2025). The successful applicant is expected to make strong contributions to the team’s activities in the tracker integration, especially the preparation and running of cold tests after mounting modules in the Clean room. The Post-doc tasks will consist in finalizing the development of the setup (data acquisition, control system) and performing statistical analyses. Possibilities for physics analysis of CMS data, in the area of expertise of the CMS IP2I group, can be discussed.

            The candidate will contribute to instrumentation activities, thus a prior experience in instrumentation is a plus. The candidate should also have strong coding skills, be able to contribute to data acquisition and control software. Although the work will be carried out mostly at IP2I, working periods at CERN are foreseen if Covid-19 restrictions permit. Results will be shown in international conferences and published in international instrumentation journals.

Research field(s)

Particle physics

Detector construction

Supervisor and contact

Name: Nicolas Chanon

Laboratory: Institut de Physique des 2 Infinis de Lyon (IP2I Lyon)

Phone number: +33 4 72 44 85 01 

Email: n.chanon@ipnl.in2p3.fr

Working environment

Job location and description

The Post-doc will be based at the IP2I, will be a member of the CMS IP2I group and become a member of the CMS experiment at CERN, signing all CMS publications. Activities will focus on instrumentation for CMS detector upgrade.

If pandemic permits, frequent travels at CERN are foreseen, to participate in meetings, present results and perform tasks required by the CMS Collaboration at the detector. The work on tracker upgrade is done in collaboration with UCLouvain and DESY (Hambourg), where travels are also foreseen.

Results will be presented in national workshops and international conferences.


            The main supervisor will be N. Chanon (CR), who is currently supervising one PhD thesis (Oct 2021 – Sept 2024) and one post-doc (Oct 2021 – Sept 2023).

            The Post-doc will receive help from the team working on the integration at the lab, including several physicists and engineers. The instrumentation activities of the thesis will be performed in collaboration with engineers from the Instrumentation group at IP2I, and researchers from the CMS group involved in the project. Direct participation from: Massimiliano Marchisone (research engineer, IP2I).

Allocated resources (technical facilites, computing…)

The activities will be performed within LIO Clean room on the site of IP2I.

Recent publications of the team

1) CMS Collaboration. Measurement of the Higgs boson production rate in association with top quarks in final states with electrons, muons, and hadronically decaying tau leptons at √s =13 TeV. arXiv:2011.03652 [hep-ex]. Eur.Phys.J. C81 (2021) 378.

2) CMS Tracker Collaboration. Beam test performance of prototype silicon detectors for the Outer Tracker for the Phase-2 Upgrade of CMS. 2020, JINST 15 P03014.

3) A. Carle, N. Chanon, S. Perries. Prospects for Lorentz Invariance Violation searches with top pair production at the LHC and future hadron colliders. arXiv:1908.11256 [hep-ph]. Eur.Phys.J. C80 (2020) no.2, 128.

4) J. Lee, N. Chanon et al. Polarization fraction measurement in ZZ scattering using deep learning. arXiv:1908.05196 [hep-ph]. Phys. Rev. D 100, 116010 (2019).

5) J. Lee, N. Chanon et al. Polarization Fraction Measurement in same sign WW scattering using Deep Learning. arXiv:1812.07591 [hep-ph]. Phys. Rev. D 99, 033004 (2019).

6) CMS Collaboration. Observation of ttH production. arXiv:1804.02610 [hep-ex], Phys. Rev. Lett. 120, 231801 (2018).

Description of LabEx LIO

In 2011, The Lyon Institute of Origins LabEx was selected following the first “Laboratory of Excellence” call for projects, part of the “Investissement d’Avenir” program for forward-looking research. It is one of 12 LabExes supported by the University of Lyon community of universities and establishments (COMUE). LIO brings together more than 200 elite researchers recruited throughout the word and forming 18 research teams from four laboratories in the Rhône-Alps region, all leaders in their fields, under the auspices of the University Claude Bernard Lyon 1 (UCBL), the Ecole Normale Supérieure de Lyon, and the CNRS. LIO’s goal is to explore questions about our origins, operating in a broad field of study that ranges from particle physics to geophysics, and includes cosmology, astrophysics, planetology and life.

Selection process

Qualifications / Skills / Education & Research requirements

The ideal candidate must hold a PhD and have skills in particle physics and data acquisition.

Language programming in C++ or python.

Ability to work in team, in an international environment.

Application deadline

May the 1st, 2022

Requested documents for application

Applicants must email a CV, a statement of interest, three letters of recommendation at  n.chanon@ipnl.in2p3.fr  before May the 1st, 2022. 

Candidates on the short list will be informed by the end of May. They will be interviewed in June. 

Apply now

Personal details*
Statement of interest*
Letter of recommendation*
Contact details for 2-3 references*

*By applying for a job listed on Academic Positions you agree to our terms and conditions and privacy policy.

Job details

Postdoctoral position - Integration of future CMS tracker sub-detectors for HL-LHC
4 Rue Enrico Fermi Villeurbanne, France
Application deadline
Job type
Save as a favourite Create job alert

More jobs from this employer

About the employer

In 2011, Lyon Institute of Origins (LIO) LabEx was selected following the first “Laboratory of Excellence” call for projects, part of the “Investis...

Visit the employer page

Discover related jobs

Become an IB Examiner for Swedish A: Literature International Baccalaureate® (IB) 1 month ago
Become an IB Examiner for Croatian A: Literature International Baccalaureate® (IB) 1 month ago
Become an IB Examiner for Danish A: Literature International Baccalaureate® (IB) 1 month ago
More jobs

Relevant stories

Bridging Adolescence and Society with Neuroscience Erasmus University Rotterdam 4 min read
The Power of Ultrafast Lasers Advanced Research Center for Nanolithography ARCNL 4 min read
Going Nuclear to Save Time University of Jyväskylä 5 min read
More stories