15/03/2019
The Human Resources Strategy for Researchers

PhD position in physics of the elementary particles

This job offer has expired


  • ORGANISATION/COMPANY
    CNRS
  • RESEARCH FIELD
    Physics
  • RESEARCHER PROFILE
    First Stage Researcher (R1)
  • APPLICATION DEADLINE
    17/05/2019 23:59 - Europe/Brussels
  • LOCATION
    France › ORSAY
  • TYPE OF CONTRACT
    Temporary
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    35
  • OFFER STARTING DATE
    01/11/2019
  • EU RESEARCH FRAMEWORK PROGRAMME
    H2020 / ERC

The thesis will be attached to the doctoral school of PHENIICS (ED N ° 576), the doctoral school of Ile-de-France whose themes are centred on subatomic physics; its particularity is to gather students from applied physics to fundamental physics in this field.
The reference laboratory is CSNSM, a multidisciplinary facility in the fields of nuclear physics, astrophysics and materials science. The PhD student will work in the Cryogenic Detector Group, led by the thesis supervisor, PI of CROSS and spokesman of the CUPID-Mo collaboration. The group, composed by 4 researchers, 3 engineers, 1 PhD student and 2 PostDocs, has more than 20-year experience in cryogenic detectors. It is currently involved in many activities related both to fundamental detection principles and astroparticle physics experiments. In this context, the group has well developed international collaborations with US (Berkeley, MIT), Italian (INFN), Ukrainian (Centre for Nuclear Research of Kiev), Russian (ITEP Moscow) and Chinese (USTC and Fudan Universities) groups. The group benefits of high-level resources including a set of world-class technological platforms. CSNSM is equipped with a clean room hosting 3 ultra-high-vacuum deposition systems for bolometer construction. The Cryogenic Detectors Group has access to numerous very low-temperature instruments, namely six dilution refrigerators (going down to 7 mK). The PhD student will have also access to the cryogenic facility of the Canfranc underground laboratory in Spain, where the final part of the CROSS-experiment will take place.

The thesis activity will be performed in the framework of CROSS, an experiment funded by an ERC Advanced Grant project (2018-2022). CROSS aims at the development of an innovative bolometric technology to search for the neutrinoless double beta decay of the isotopes Mo-100 and Te-130. Neutrinoless double beta decay is a very rare nuclear transition that can provide basic information about neutrinos, inaccessible via other experimental techniques. In particular, if observed, it would ascertain the Majorana nature of neutrino, i.e. neutrinos and antineutrinos would be the same particle. The two isotopes studied by CROSS are very promising to study neutrinoless double beta decay. CROSS detectors are low-temperature bolometers made of crystals containing the two nuclei of interest. The innovative idea of CROSS is to reject the most challenging form of background (the one due to surface contamination) by a technique capable of selecting surface events by pulse shape discrimination. Superconductive aluminium films will be deposited on the crystal surface and they will act as pulse-shape modifiers due to solid-state physics effects.
The PhD program will consist of:
(1) the assembly of a large array of Mo- and Te-based bolometers with surface-event discrimination capability
(2) their installation in a cryostat in the Canfranc underground laboratory in Spain
(3) the commissioning of the detector, implying bolometer characterization and calibration. (4) Data taking and measurement maintenance as well as data analysis and extraction of the physics results.
The program is fully funded by the CROSS project.
The work will be done in the context of the CROSS international collaboration. The PhD student will have the opportunity to present the results obtained at the Collaboration international conference of the field.
Bibliographical references
[1] A. Giuliani, F.A. Danevich, V.I. Tretyak
A MULTI−ISOTOPE 0v2b BOLOMETRIC EXPERIMENT
Eur.Phys.J.C, 2018, 78, 272
[2] C. Alduino, K. Alfonso, E. Andreotti, C. Arnaboldi, F.T. Avignone, ...A. Giuliani,..et al. FIRST RESULTS FROM CUORE: A SEARCH FOR LEPTON NUMBER VIOLATION VIA  DECAY OF 130Te Phys.Rev.Lett., 2018, 120 (13), pp.132501
[3] G. Buse, A. Giuliani, P. De Marcillac, S. Marnieros, C. Nones, et al.. FIRST SCINTILLATING BOLOMETER TESTS OF A CLYMENE R&D ON Li2MoO4 SCINTILLATORS TOWARDS A LARGE-SCALE DOUBLE-BETA DECAY EXPERIMENT
Nucl.Instrum.Meth.A, 2018, 891, pp.87−91
[4] L. Bergé, M. Chapellier, M. De Combarieu, L. Dumoulin, A. Giuliani, et al.
COMPLETE EVENT−BY−EVENT alpha/beta(gamma) SEPARATION IN A FULL−SIZE TeO2 CUORE BOLOMETER BY NEGANOV-LUKE-MAGNIFIED LIGHT DETECTION
Phys.Rev.C, 2018, 97 (3), pp.032501
[5] O. Azzolini, M. Barrera, J. Beeman, F. Bellini, M. Beretta, ...A. Giuliani,..et al.
FIRST RESULT ON THE NEUTRINOLESS DOUBLE−beta DECAY OF 82Se WITH CUPID−0
Phys.Rev.Lett., 2018, 120 (23), pp.232502
[6] O. Azzolini, M.T. Barrera, J.W. Beeman, F. Bellini, M. Beretta, ...A. Giuliani,..et al.
CUPID−0: THE FIRST ARRAY OF ENRICHED SCINTILLATING BOLOMETERS FOR 0v2b DECAY INVESTIGATIONS
Eur.Phys.J.C, 2018, 78 (5), pp.428
[7] C. Alduino, K. Alfonso, D.R. Artusa, F.T. Avignone, O. Azzolini, ...A. Giuliani,..et al.
MEASUREMENT OF THE TWO−NEUTRINO DOUBLE−BETA DECAY HALF−LIFE OF 130Te WITH THE CUORE−0 EXPERIMENT
Eur.Phys.J., 2017, C77 (1), pp.13
[8] D. Poda and A. Giuliani
LOW BACKGROUND TECHNIQUES IN BOLOMETERS FOR DOUBLE−BETA DECAY SEARCH
Int. J. Mod. Phys. A 32, 1743012 (2017)
[9] D.R. Artusa, F.T. Avignone, J.W. Beeman, I. Dafinei, L. Dumoulin, ...A. Giuliani,..et al.
ENRICHED TEO2 BOLOMETERS WITH ACTIVE PARTICLE DISCRIMINATION: TOWARDS THE CUPID EXPERIMENT
Phys.Lett., 2017, B767, pp.321−329
[10] E. Armengaud, C. Augier, A.S. Barabash, J.W. Beeman, T.B. Bekker, ...A. Giuliani,..et al.
DEVELOPMENT OF 100Mo−CONTAINING SCINTILLATING BOLOMETERS FOR A HIGH−SENSITIVITY NEUTRINOLESS DOUBLE−BETA DECAY SEARCH
Eur.Phys.J.C, 2017, 77 (11), pp.785

Additional comments

The candidate must hold a degree in engineering and / or a master's degree in physics, or plan to obtain it before the date of the beginning of the thesis. In the latter case, she / he will have to present a program of the possible exams still to be supported and the presumed date of graduation or master. The work requires a good knowledge of particle physics and / or nuclear physics (prevalent solid physics training is also accepted), good oral and written communication skills (English required) to present at conferences and write papers in scientific journals. We are looking for a young researcher who will be involved in his project, curious, with a certain autonomy and a strong motivation to develop skills in neutrino physics, research of rare events, low radioactivity, extreme cryogenics, low noise electronic measurements, in the field of astroparticle physics. In addition, the candidate must be inclined to work in a team on multidisciplinary projects.
Applications should include a detailed CV; at least two references (people who may be contacted); a cover letter of one page; a one-page summary of the master thesis; the grades of Master 1 or 2 or engineering school).
The deadline for submitting applications is 31/05/2019.

Web site for additional job details

Required Research Experiences

  • RESEARCH FIELD
    Physics
  • YEARS OF RESEARCH EXPERIENCE
    None

Offer Requirements

  • REQUIRED EDUCATION LEVEL
    Physics: Master Degree or equivalent
  • REQUIRED LANGUAGES
    FRENCH: Basic
Work location(s)
1 position(s) available at
Centre de Sciences Nucléaires et de Sciences de la Matière
France
ORSAY

EURAXESS offer ID: 390347
Posting organisation offer ID: 8508

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