PostDoc - Search for neutrinoless double beta decay with high pressure xenon time projection chambers (Closed)

Post-doctoral position
Position category: PostDoc
Reference: 2024/18
Duration: 3 years
Application deadline: 2024/06/04
For more info contact the supervisors:
Juan José Gómez Cadenas
Stefano Roberto Soleti
How to apply

We are currently accepting applications for the above mentioned position. This is a unique opportunity for junior researchers with a recent PhD degree in Physics or related fields to join one of DIPC’s high-profile research teams.

The role

The neutrinoless double beta decay is a hypothetical, ultra-rare nuclear process whose observation could help to answer some of the fundamental questions still open in particle physics. It would demonstrate that neutrinos are their own antiparticles, which would make them the only Majorana particles in the Standard Model. It would also provide a potential explanation for the matter-antimatter asymmetry of the universe through the leptogenesis mechanism. One of the leading technologies for the detection of this process is represented by high-pressure xenon time projection chambers (HPGXeTPCs). The NEXT collaboration developed several HPGXeTPCs and is currently operating a 100 kg-scale experiment, located at the Canfranc Underground Laboratory (LSC) in the Pyrenees. The Donostia International Physics Center is one of the leading institutions of the collaboration and is looking for a postdoctoral researcher to join the experiment at this crucial time. The researcher will directly work on the calibration and data analysis of the NEXT-100 detector and will contribute to the development of an optical fiber barrel detector for a next-generation, ton-scale experiment.

In parallel, DIPC researchers are leading a research program aimed at developing an economically viable full-body positron emission tomography, leveraging the synergies between particle physics and medical imaging. The researcher will dedicate part of his time to the assembly and calibration of a prototype PET scanner employing cryogenically cooled cesium iodide crystals.

Desired background & competences

The candidate should hold a PhD in Physics. A good level of written and spoken English is required. Experience with gaseous time projection chambers and crystal calorimeters is a preferred qualification.

Working conditions

  • Estimated annual gross salary: Salary is commensurate with qualifications and consistent with our pay scales
  • Target start date: 2024/06/17

We provide a highly stimulating research environment, and unique professional career development opportunities.

We offer and promote a diverse and inclusive environment and welcomes applicants regardless of age, disability, gender, nationality, ethnicity, religion, sexual orientation or gender identity.

The center

DIPC is a research center whose mission is to perform and catalyze cutting-edge research in physics and related disciplines, as well as to convey scientific culture to society. Located in Donostia / San Sebastian (Basque Country, Spain), DIPC was born from a strategic alliance of both public institutions and private companies. Since 2008 DIPC is a 'Basque Excellence Research Center' (BERC) recognized by the Basque Government's Department of Education. In 2019, DIPC was also recognized as a "Severo Ochoa" Excellence Center by the Spanish Research Agency.

About the team

The Experimental Particle Physics Research Line, led by Ikerbasque Research Professor, J. J. Gomez Cadenas, is devoted to experimental neutrino physics. It focuses on the study of the neutrinoless double beta decay (NEXT project), a process whose detection would make it possible to answer the fundamental question of whether the neutrino is its own antiparticle, i.e., a Majorana fermion, with far reaching implications in particle physics and cosmology.

The researchers involved in this line are also leading the detection of coherent elastic neutrino-nucleus scattering at the upcoming European Spallation Source, with the GanESS and ESSCEvNS projects. These experiments will allow to take advantage of the most powerful neutron source in the world to probe the Standard Model of particle physics with unprecedented sensitivity.

In addition, they are part of the Hyper-Kamiokande collaboration, which will deploy the largest neutrino detector in the world with the goal of investigating the origin of matter and the inner workings of the Sun and supernovas.

The design and development of the experimental technology required to answer these questions has natural connections with other fields of physics (condensed matter, surface physics, atomic physics, etc.) and may result in potential technological applications in areas such as sensorics or medical physics (the PETALO and CRYSP projects).

How to apply

Interested candidates should submit an updated CV and a brief statement of interest to the following application email below. 

Reference letters are welcome but not indispensable.

The reference of the specific opening to which the candidate is applying should be stated in the subject line, and the application must be received before the application deadline.

Although candidates are welcome to contact the project supervisors to know further details about the proposed research activity, please be aware that the application will be evaluated only if it is submitted directly to the email address listed below as application email.

Selection process

Applications received by the deadline will be evaluated by a Committee designed by the DIPC board on the basis of the following criteria:

  • CV of the candidate (40%)
  • Adequacy of the candidate’s scientific background to the project (40%)
  • Reference letters (10%)
  • Other: Diversity in gender, race, nationality, etc. (10%)

Evaluation results will be communicated to the candidates soon after. Positions will only be filled if qualified candidates are found.

The DIPC may revoke its decision if the candidate fails to join by the appointed time, in which case the position will be awarded to the candidate with the next highest score, provided it is above 50 (out of 100).

However, the selected candidate may keep the position if, in the opinion of the Selection Committee, the candidate duly justifies the reasons why he or she cannot join before the specified deadline, and as long as the project allows it.

This project has received funding from  "Proyecto PID2021-125475NB-C51 de investigación financiado por MICIU/AEI/10.13039/501100011033 y por FEDER, UE".



"This contract is funded from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 951281)".



The resolution of this opening has been already published. You can download it here.