Author Image

Hi, I am BGameiro

Bernardo Gameiro

Pre-Doctoral Researcher at Instituto de Física Corpuscular (IFIC)

I’m a Nuclear Physics student with an interest in Informatics. I like to learn new things and spend time on my own projects. I’m curious about Heterogeneous Computing, Scientific Computation, Nuclear Sciences its Applications.

Contacts me at IFIC or CERN.



Instituto de Física Corpuscular (IFIC)

Feb 2023 - Present, Valencia, Spain

The Instituto de Física Corpuscular is a CSIC and University of Valencia joint center dedicated to experimental and theoretical research in the fields of particle physics, nuclear physics, cosmology, astroparticles and medical physics.

Research Student (Ph.D.)

Sept 2023 - Present

  • Neutron capture cross-section measurement of a Nd-146 target in a neutron time-of-flight experiment @ CERN.
  • Assessment of the feasibility of real time imaging with i-TED.
Research Student (M.Sc.)

Feb 2023 - Sept 2023

  • Upgrade and characterization of the multi i-TED detector array.
  • Mounting and characterization of the i-TED-E detector.
  • Gamma-ray imaging using Compton imaging.
  • Background suppression studies based on imaging techniques.

Research Intern
Grand Accélérateur National d'Ions Lourds (GANIL)

Sept 2022 - Jan 2023, Caen, France

The Grand Accélérateur National d’Ions Lourds (GANIL), or Large Heavy Ion National Accelerator, is a French national nuclear physics research center in Caen. The facility has been in operation since 1983, and consists primarily of two serialised synchrocyclotrons.

  • Characterization of a neutron detector (liquid scintillator and photomultiplier).
  • For use in continuous mixed fields.
  • Machine Learning project for particle identification.


PhD in Physics
Extracurricular Activities:
  • Member of the Gamma and Neutron Spectroscopy Group of IFIC (UV-CSIC)
  • Member of n_TOF collaboration @ CERN
  • Member of the Early Career Members Group @ IOP
B.Sc. in Engineering Physics
Grade: 15 out of 20
Extracurricular Activities:
  • Integrated the Portuguese Association of Physics Students (Physis) as part of its Department of Professional Opportunities.
  • Integrated the Association of Physics and Engineering Physics Students (NFEF) of my University (FCUL) as part of its Department of Pedagogy.
Minor in Informatics
Grade: 15 out of 20


HomeLab Network
Hobby Project 2017 - Present

Administration of computer network with enterprise and consumer hardware, including 1 NAS and 3 servers in 2 different countries.

Academic Project 2023 - Present

Conversion of the gpuFit library to SYCL with oneAPI.

Academic Project 2023 - Present

Characterization, optimization, and development of the i-TED gamma-ray detector, based on the Compton camera design.

Academic Project 2023 - Present

Study of the neutron-capture cross section of Nd-146, an isotope of interest for Nuclear Astrophysics.


Optimization of imaging techniques for background suppression of stellar Nucleo-Synthesis reactions with i-TED

The work presented in this thesis refers to the upgrade and characterization of the multi Total-Energy Detector with imaging capability (i-TED) detector system with subsequent studies of its background suppression capabilities. The multi i-TED is an innovative Gamma-ray imaging system consisting of an array of four Compton cameras. The data-driven upgrade of the i-TED modules and the subsequent characterization of its performance includes characterization of the energy resolution, timing, coincidence energy resolution, dependence on temperature, and alpha activity. The imaging studies were performed with the objectives of the detector in mind. The background suppression and imaging resolution studies were conducted using sources at Instituto de Física Corpuscular (IFIC) and in a scientific campaign at Centre for Micro Analysis of Materials (CMAM) in June 2023.

The study of the slow neutron capture process is fundamental for understanding the creation of isotopes heavier than Fe-56 in stars and, by extension, the relative abundances of the different elements. One of the most prominent methods to constrain the stellar models for the s-process is measuring the neutron capture cross-section (n,gamma) in the neutron energy range of astrophysical interest (1 - 100 keV) in neutron time-of-flight experiments. However, for some isotopes, these are experimentally limited by the overwhelming gamma-ray background radiation induced by the neutrons scattered from the target and interacting with the surroundings. i-TED, a total-energy detector with imaging capabilities based on the Compton camera design, was proposed to tackle this limitation by suppressing background events based on their spatial origin, different from the sample under study. After several years of development, the multi i-TED array, composed of four modules, was mounted and successfully used for the first Se-79(n,gamma) cross-section measurement at CERN n_TOF. Recently, we have implemented several hardware and software upgrades to optimize its performance further. This contribution will present a brief summary of the recent upgrades and first characterization of the final multi i-TED detector setup. The results of the first systematic study of the background suppression capabilities based on selections in the Compton imaging domain will be presented, comparing the performance of several methodologies. An outlook into future simulation work and the applicability of ML methods for the optimization of event selection will also be included.


Machine Learning Using oneAPI
Instructor Since Feb 2024

Intel certified instructor for oneAPI: Machine Learning Using oneAPI

CUDA* to SYCL* Migration
Instructor Since Dec 2023

Intel certified instructor for oneAPI: CUDA* to SYCL* Migration

oneAPI C++ SYCL Essentials
Instructor Since Dec 2023

Intel certified instructor for oneAPI: oneAPI C++ SYCL Essentials

Graduate School Jul 2024

Graduate School on Artificial Intelligence. Great focus on transformers, architectures of DNN, agents, ethics, and AI in science.

Graduate School Jun 2024

Graduate School on European Summer School on Experimental Nuclear Astrophysics.

Neutron Resonance Analysis
Graduate School May 2024

Graduate School on neutron resonance analysis, including R-matrix formalism to analyze data from neutron capture cross-section measurement in time-of-flight facilities.

n_TOF Winter School
Graduate School Jan 2024

Graduate School on nuclear science and applications. It included several topics such as nuclear structure, nuclear reactions, nuclear astrophysics, nuclear technologies, activation measurements, radiation protection and medical applications.

Graduate School Oct 2023

Graduate School on the Computing Challenges for the HL-LHC era. It includes dedicated lectures on Artifical Intelgence and Machine Learning, and programming in new accelerator platforms such as GPUs and FPGAs.

Graduate School Sept 2022

Graduate School on the Science and Applications of Ionizing Radiation in Health, Materials and the Environment.

Graduate School Jul 2022

Graduate School on Early-deployable Small Modular Reactors.

Institute of Physics