Month: Kwiecień 2022

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 29 kwietnia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„The NOvA Experiment and Neutrino Oscillations”

Referuje: Dr Tomas Nosek (NCBJ)

Abstract:

NOvA is a two detector long-baseline neutrino oscillation experiment using Fermilab’s 700 kW NuMI neutrino beam. It studies the disappearance of muon (anti)neutrinos and the appearance of electron (anti)neutrinos in the beam over a distance of 810 km between the detectors.
The experiment has made over 4σ-significant observation of electron antineutrino appearance in muon antineutrino beam and constrained the oscillation parameters |∆m2 32|, sin2 θ23, and δCP. In this seminar, I will present the main features of the NOvA experimental setup and the neutrino oscillation analysis within the standard paradigm of three neutrinos mixing. I will point out the key differences to the similar T2K experiment and its complementarity. I will review the 2020 results of NOvA and T2K and remind the potential of their combined analysis, which has the power to break the degeneracies of the individual measurements. By continuing to collect data before the dawn of next-generation long-baseline experiments in the late 2020s, the statistical uncertainty will be reduced, and certain physics milestones might be within reach. To that end, it is vital to understand the major sources of systematic uncertainties and their correlations for both the interpretation and precision of the results and for further improvements of the analyses.

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 22 kwietnia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„The b-physics with the CMS experiment – an update”

Referuje: dr hab. Marcin Konecki, prof. UW

Abstract:

CMS is a general purpose experiment at the LHC, designed for a rich physics program that includes b-physics studies.
Selected recent CMS results in b-physics will be presented: measurement of CP-violation phase Phi_s, results on B^0/B^0_s
decaying to mu^+ mu^- and observations of new states and decay modes in b-sector.

Serdecznie zapraszamy

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

SEMINARIUM FIZYKI WIELKICH ENERGII

Dnia 08 kwietnia (piątek) o godzinie 10:15, w sali B2.38 odbędzie się

seminarium, na którym zostanie wygłoszony referat pt.:

„Digital Signal and Image Processing in Jagiellonian Positron Emission
Tomography”

Referuje: Dr Lech Raczyński (NCBJ)

Abstract:

This presentation is devoted to introduction of data processing algorithms in Jagiellonian PET (J-PET) scanner. In contrast to state-of-the-art PET scanners, in the J-PET detector multiple small inorganic crystal scintillators are replaced with a long plastic scintillator strips. The operational principles of the J-PET scanner are similar to conventional tomographs, except that the highly accurate time information is of paramount importance. Therefore, the J-PET scanner demands a preparation of novel methods on each step of the data processing. The goal of the work presented in this talk is a development of the signal and image processing algorithms taking into account uniqueness of the J-PET detector. The proposed methods include: signal recovery based on samples of a waveform registered on photomultiplier output,reconstruction of position of interaction of annihilation photon in the scintillator strip,classification of PET events types and image reconstruction that operates exclusively in the image space.

Serdecznie zapraszamy

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