Category: Uncategorized

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 19 kwietnia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Transverse-spin asymmetries in COMPASS Drell-Yan data „

Referuje: mgr Małgorzata Niemiec (IFD UW)

After nearly 60 years of extensive experimental and theoretical studies, several aspects of the nucleon structure are still poorly known. While main  efforts focuse on its collinear structure, measurements of transverse parton momenta are scarce and their analysis complicated.

They involve measuring cross-section asymmetries in reactions like semi-inclusive deep inelastic scattering or Drell-Yan processes.

In 2015 and 2018 the COMPASS Collaboration at CERN performed measurements of the Drell-Yan process π−p → μ+μ−X at 190 GeV/c pion beam and transversely polarised NH3 target. This presentation covers a description of the measurement of Transverse Spin Asymmetries in the Drell-Yan process, and in particular of a novel approach, in contrast to the conventional one, where the asymmetries are weighted by powers of a transverse momentum of the dimuon system with respect to the beam.

This presentation is an extended version of a talk given on behalf of the COMPASS Collaboration  at the International Workshop on Deep Inelastic Scattering and Related Subjects, DIS2024, in Grenoble (France), 8-14 April, 2024.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 12 kwietnia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„T2K+NOvA Joint Neutrino Oscillation Analysis”

Referuje: dr Tomas Nosek (NCBJ)

The T2K and NOvA experiments are the two currently active long-baseLine (LBL)

experiments to measure the phenomenon of neutrino oscillations. This talk presents a

joint T2K+NOvA neutrino oscillation analysis within the standard three active neutrino

flavors paradigm, which includes each experiment’s fully detailed detector simulations

and takes advantage of the complementary oscillation baselines of 295 km and

810 km and neutrino energies around 0.6 GeV and 2 GeV for T2K and NOvA, respectively.

The T2K and NOvA collaborations have worked together on a joint analysis

of the two experiments’ data, hoping to use the differing physics sensitivities to paint

the clearest picture of neutrino oscillations from LBL experiments. Within a unified

Bayesian inference, the results from the first T2K+NOvA joint neutrino oscillation

measurement will be discussed.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 5 kwietnia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Construction of the research high temperature gas-cooled reactor HTGR-POLA (POLish Atomic) in Świerk”

Referuje: prof. dr hab. Mariusz P. Dąbrowski (NCBJ)

High-temperature nuclear reactors produce heat at the temperature range (from over 500 ⁰C to even 1000 ⁰C) which is hardly achievable by any light water reactor (approx. 300 ⁰C). In view of that they are ideal for decarbonization of the Polish chemical and petrochemical industry which requires the high temperature steam. NCBJ has been carrying out preparatory work in various areas (legal, social, organizational, technical) for the construction of this type of reactors in Poland for nearly a decade. Now the NCBJ experts plan to build a research-demo reactor at Świerk in order to gain experience towards industrial implementation of this technology. Due to the fund from the Ministry of Science and Higher Education (agreement 1/HTGR/2021/14), the elaboration of the so-called basic design of such a reactor is being carried on. This happens in cooperation with the Japan Atomic Energy Agency, which possesses similar, though not updated to current trends in polygeneration (production electricity, heat, hydrogen etc.), research device – HTTR. The reactor traditionally carrying feminine name “POLA” will have a power of 30 MW thermal and will operate continuously using the energy produced for NCBJ’s own purposes (electricity production, municipal heat) and for an industrial test installations using high-temperature steam at 560 ⁰C. The aim of the seminar will be to present the context, assumptions, status of current work on the reactor design and the prospects for its rapid construction.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 22 marca (piątek) o godzinie 10:15, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Exotic searches with the CMS detector at the CERN LHC”

Referuje: dr Małgorzata Kazana (NCBJ)

LHC scientists extend searches for new particles using advanced techniques and exploring exotic signatures. The report on results obtained by the CMS experiment with LHC Run-2 (mainly) and Run-3 data will be given.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 15 marca (piątek) o godzinie 10:15, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Quantum Information at Colliders”

Referuje: dr hab. Kazuki Sakurai, prof. UW (IFT UW)

Quantities and concepts in quantum information theory (QIT), such as entropy and Bell-nonlocality, play an important role in the development of quantum technologies as well as in deepening our understanding of quantum field theory and gravity.  Recently, an effort to observe QIT quantities at the LHC and future colliders has been started and attracted attention.  In this talk, after briefly reviewing the recent progress on this topic, I will present my recent works based on 2211.10513 and 2310.01477.  The first part is a study of observing the spin-entanglement of two tau-leptons produced from the Higgs decay.  The second part concerns entanglement among three particles in 3-body particle decays.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 8 marca (piątek) o godzinie 10:15, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Pacific Ocean Neutrino Experiment (P-ONE)”

Referuje:  dr hab. Paweł Małecki (IFJ PAN)

The neutrino astronomy is a new but already well-established branch of physics under a rapid development in the recent years and fitting well into the concept of multi-messenger astronomy. The studies of astrophysical very-high-energy neutrinos are carried out by large-scale next-generation neutrino telescopes, located in different regions of the world and including the IceCube, Baikal-GVD and KM3NeT detectors currently in operation. The Pacific Ocean Neutrino Experiment

(P-ONE) is currently under construction in the Pacific Ocean, 600 km west from Vancouver at depth of 2.6 km and will cover over 3 cubic-km of active volume, being sensitive to neutrinos with energies between 100 TeV and 10 PeV. Its first regular measurement line will be deployed by the end of 2025, followed by subsequent lines shortly after. This talk reviews the design and working principles of the P-ONE detector, existing results and perspectives.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 1 marca (piątek) o godzinie 10:15, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Uczenie maszynowe w fizyce”

Referuje:  dr hab. Artur Kalinowski, prof.UW (IFD UW)

W czasie seminarium przypomnę podstawowe pojęcia z dziedziny uczenia maszynowego, następnie przytoczę losowe przykłady jego zastosowania  w różnych działach fizyki.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 2 lutego (piątek) o godzinie 10:15, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Image-guided FLASH Proton Therapy”

Referuje: Karol Lang, University of Texas at Austin

Image-guidance and dosimetry of the in-vivo proton range verification is one of the most underinvested aspects of radiation cancer treatment. The scarcity of sensitive instruments and treatment protocols for precision monitoring of effects of beam radiation leaves much room for improvement. This is despite that such measurements may dramatically enhance the treatment accuracy and lower the post-exposure toxicity, improving the entire outcome of cancer therapy.

In this talk, we will discuss designing and building of an in-beam time-of-flight positron-emission-tomography (PET) scanner to be tested in pre-clinical studies at Proton Therapy Center of MD Anderson Cancer Center in Houston. We will also discuss selected results of recent experiments with FLASH proton beam irradiations of phantoms and other related ideas towards improving and expanding the use of PET detectors, including the total body imaging. This endeavor has been made possible by the support of the U. of Texas – Portugal program at the University of Texas at Austin.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 26 stycznia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Light-by-light scattering and dilepton production in ultra-peripheral heavy-ion collisions with ATLAS”

Referuje: dr Krzysztof Cieśla (AGH)

The presence of a large flux of photons accompanying relativistic heavy ion beams leads to a significant number of photon-induced processes, including photon-photon fusion. These processes are remarkably clean with little or no remnant activity from the interacting particles. I will present the status of photon-photon fusion measurements resulting in either two photons (γγ→γγ) or two charged leptons (γγ→l+l−) in the final state, measured by the ATLAS experiment in ultra-peripheral heavy-ion collisions.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak

prof. dr hab. Aleksander Filip Żarnecki

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 19 stycznia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się seminarium, na którym zostanie wygłoszony referat pt.:

„Status of the Dose-3D Project”

Referuje: prof. Tomasz Szumlak (AGH)

The dose-3D project aims to provide a next-generation active phantom for rapid measurement of the deposited dose in photon therapy. During the initial development period, a dedicated, modular, and flexible DAQ system was designed and constructed along with a number of prototypes.

The design of the detector configurable matrix was especially challenging. An extensive search for the best scintillating active material and suitable mechanical part provided the required robust support and sufficiently small material budget. We decided to use 3D printing technology for the final prototypes to produce both the scintillating voxels and mechanical parts. Also, considerable effort was dedicated to designing and implementing an interface between the optical fibre and the scintillating voxel. In this talk, I will give the current status of the project and prospects for future developments and commercialisation prospects.

Serdecznie zapraszamy

dr hab. Katarzyna Grzelak
prof. dr hab. Aleksander Filip Żarnecki