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Joint seminars of the NPI

The joint seminars of the Nuclear Physics Institute are reserved for subjects extending the scope of interests of one department (mainly seminars of the important guests, reviews on NPI groups and the outstanding results, usually in English).

Next seminar:

8. 9. 2025, 10:00, NPI meeting room

  • Stefanus Harjo, J-PARC Center, Japan Atomic Energy Agency: Neutron Engineering Materials Diffractometer TAKUMI in J-PARC

25. 9. 2025, 10:00, NPI meeting room

  • RNDr. Petr Chaloupka, Ph.D.,FJFI ČVUT & OFTI ÚJF:  Exploring baryon-rich QCD matter with CBM at FAIR

Abstracts:

Neutron Engineering Materials Diffractometer TAKUMI in J-PARC
Stefanus Harjo
J-PARC Center, Japan Atomic Energy Agency

TAKUMI is a neutron powder diffractometer designed for investigating internal stresses and crystallographic structures to better understand deformation behavior and phase transformations in various metallic materials and ceramics, as well as residual stress distributions in engineering components. Thanks to the contributions of outstanding users and team members, TAKUMI has consistently delivered significant research outcomes.

In addition to three types of radial collimators (with viewing widths of 1 mm, 2 mm, and 5 mm), TAKUMI is equipped with a wide range of sample environment devices. These include loading machines with varying maximum capacities, furnaces, and a cryogenic chamber (which can be integrated with the loading machines), as well as an electric field application system and a Eulerian cradle. Hybrid neutron diffraction measurements combined with digital image correlation (DIC), infrared thermography, and/or acoustic emission have also been developed and applied in various experiments.

This presentation will introduce the current status of TAKUMI and highlight several key research achievements.

Exploring baryon-rich QCD matter with CBM at FAIR
RNDr. Petr Chaloupka, Ph.D.
FJFI ČVUT & OFTI ÚJF

The Compressed Baryonic Matter (CBM) experiment is under construction at the Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany. It aims to explore the phase structure and microscopic properties of strong interaction (QCD) matter at large net-baryon densities and moderate temperatures using heavy-ion collisions in the energy range √sNN = 2.9 - 4.9 GeV. CBM is a fixed-target experiment, equipped with fast and radiation hard detector systems and an advanced triggerless data acquisition scheme. It will collect data at unprecedented interaction rates by performing online reconstruction and event selection, thus allowing measurements of rare probes not accessible so far in this energy range. These include: multi-strange hadron production and their flow, higher-order cumulants, dileptons, as well as double-strange hypernuclei. I will give an overview of the CBM physics performance and objectives, as well as the detector technologies being developed for the experiment. The status of preparations for CBM’s commissioning in 2028, including performance evaluations of CBM components at FAIR Phase-0 experiments, will also be presented.

Archive of seminars

 

2024 

2023

2022

  • Monday, September 9, 2019 - 10:00
    A. Turbiner (ICN-UNAM, Mexico and Stony Brook University, USA) 
    Choreography in Physics

 

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