Events

All future and past seminars

AUTOMN semester 2020

 

Sep. 16 : Dr Anatael CABRERA, APC Paris
Title : Opaque detectors

 

Sep 30  : Dr TJ KHOO, University of Innsbruck, Austria  
Title : Physics with many jets

 

Oct 07 : Dr Marie-Hélène GENEST, LPSC Université de Grenoble Alpes, France
Title : LHC exotics overview

 

Oct 14 : Dr Max SWIATLOWSKI, TRIUMF, Canada
Title : Physics with H->bb

 

Oct 28 : Dr Andreas HOECKER, CERN
Title : g-2

 

Nov 11 : Dr Werner LUSTERMANN, ETHZ,  Zurich
Title : SAFIR

 

Nov 25 : Dr Federico Leo REDI, EPFL, Lausanne
Title : LLPs at LHCb

 

Dec 02 : Dr Elena CUOCO, Scuola Normale Superiore, Pisa, Italy
Title : ML & gravitational waves

 

Dec 09 : Dr Jakob SALFELD-NEBGEN, CERN
Title : DM Searches with non-conventional triggers at CMS

 

 

 

SPRING semester 2020

SEMINARS AS OF MARCH CANCELLED DUE TO COVID19

 

Feb 26 : Dr Michele Punturo, INFN Perugia
Title : Perspectives of Gravitational Wave observations from current Advanced detectors to Einstein Telescope - Access to the talk

Abstract

The detection of the gravitational waves by Advanced LIGO and Advanced Virgo opened a new era in the observation of the Universe: a new messenger is allowing to discover unexpected dark events and to contribute to multimessenger observations of astronomical catastrophes. A new gravitational wave observatory, Einstein Telescope (ET), is proposed to fully exploit the potential of the gravitational wave astrophysics.

 ET will observe the coalescence of black holes and neutron stars in almost the whole Universe having a decisive impact in cosmology, astrophysics, nuclear and fundamental physics. The achievements of the advanced detectors and the perspectives of Einstein Telescope project will be presented.

 

 

 

AUTOMN semester 2019

 

Sep. 25 : Prof. Susanne Mertens, TU, Munich
Title : First neutrino mass results from KATRIN - Access to the talk

Abstract

The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to directly probe the neutrino mass with a sensitivity of 0.2 eV (90% CL).

KATRIN persues a model-independent approach, solely based on the kinematics of tritium beta decay. A non-zero neutrino mass manifests itself as a small spectral distortion close to the endpoint of the decay. In spring 2019 KATRIN performed its first neutrino mass measurement campaign. With this first data set new limits on the neutrino mass could be established, reaching for the first time the sub-eV regime. In this talk the KATRIN working principle and the first neutrino mass results will be presented. A short perspective to the future scientific program of KATRIN will be given.

 

Oct 02 : Prof. Andrea Wulzer, University of Padova & CERN - Access to the talk
Title : Present and Future Colliders Physics

Abstract

High-energy colliders are indispensable tools for a broad, systematic and robust exploration of Fundamental Interactions Physics. One such collider, the LHC including its high-luminosity upgrade (HL-LHC), will deliver data during the next several decades. I will illustrate by concrete examples the HL-LHC potential to probe presently unexplored new physics. I will also outline some of the exciting challenges in theoretical and experimental physics, and in data analysis, that will have to be addressed in order to exploit this potential fully. Finally I will summarise some aspects of the physics potential of future collider projects like the FCC, CLIC and ILC, and of more speculative proposals such as the muon collider.

 

Oct 16 : Prof. Marcello Messina, NYU, Abu Dhabi
Title : The PTOLEMY project: from an idea to a real experiment to detect the Cosmological Relic Neutrinos - Access to the talk

Abstract

In the first part the seminar a novel idea on the detection of Cosmological Relic Neutrinos (CRN) and more in general, on the detection of neutrinos of vanishing energy will be presented. This idea is described in detail in the paper [1]. The method is based on the fact that neutrino interactions on beta-instable nuclei have the key feature of requiring no energy threshold for the neutrino interaction. Some phenomenological aspects will be presented.

The second part of the seminar will be dedicated to the PTOLEMY project, in a starting phase at the Laboratori Nazionali del Gran Sasso, Italy. In this project we aim at demonstrating the detection principle of the CRN and finalize the design of the future full scale experiment. The technologies on which the detector concept is based will be presented and the key features explained.

A new-concept of electrostatic filter discussed in a paper [2] recently published by the PTOLEMY collaboration will also be explained in details.

 

Oct 30 : Dr Marco Apollonio, Diamond Light Source, UK
Title : Synchrotron Radiation: a bright light for science

Abstract

Diamond Light Source is the UK’s national synchrotron science facility, located at the Harwell Science and Innovation Campus in Oxfordshire. The machine accelerates electrons to near light speeds so that they give off light 10 billion times brighter than the sun. These bright beams are then directed off into laboratories known as ‘beamlines’. Here, scientists use the light to study a vast range of subject matter, from new medicines and treatments for disease to innovative engineering and cutting-edge technology. Whether it’s fragments of ancient paintings or unknown virus structures, at the synchrotron, scientists can study their samples using a machine that is 10,000 times more powerful than a traditional microscope.

I will illustrate the main characteristics of the light produced at Diamond, the way it is generated by means of dedicated devices and the techniques used to improve the quality of such radiation by a substantial reduction of size and divergence of the electron beams. I will show a comparison of the different solutions adopted in present and (near) future machines and conclude with few science cases related to the use of synchrotron radiation at our facility.

 

Nov 06 : Dr Nathal Severijns, KU, Leuven University
Title : Probing physics beyond the Standard Model in neutron and nuclear beta decay- Access to the talk

Abstract

Precise measurements of observables in beta decay allow testing the symmetries of the Standard Model, or searching for new physics at the low-energy frontier. Such measurements provide information on physics beyond the Standard Model that is complementary to direct searches at the Large Hadron Collider.

The main challenges in order to further improve the sensitivity to new physics are to reach per mil precision levels and possibly beyond, while keeping control over systematics and small Standard Model effects that then start playing a role. 

A non-exhaustive overview of this field and future prospects will be presented based on selected, recent and planned state-of-the-art measurements that use a variety of techniques.

 

Nov 20 : Prof. Kostas Nikolopoulos, University of Birmingham
Title : NEWS-G: Search for Light Dark Matter with a Spherical Proportional Counter - Access to the talk

Abstract

The NEWS-G collaboration is searching for light dark matter candidates using a spherical proportional counter. Access to the mass range from 0.1 to 10 GeV is enabled by the combination of low energy threshold, light gaseous targets (H, Ne), and highly radio-pure construction.  

 The current status of the experiment will be presented, along with the first NEWS-G results obtained with SEDINE, a 60 cm in diameter spherical proportional counter operating at LSM (France), excluding cross-sections above 4.4x10^{37} cm^2 for 0.5 GeV WIMP using a neon-based gas mixture.  

 The construction of the next generation, 140 cm in diameter, spherical proportional counter constructed using 4N copper at LSM will be discussed, along with the latest advances in SPC instrumentation. The detector, following initial commissioning at LSM is currently being transported to SNOLAB (Canada), with the first physics run scheduled for 2020. Finally, future prospects and applications of spherical proportional counters will be summarised.

 

 

Dec 04 : Dr Giovanni Rumolo, CERN
Title : LHC Injectors Upgrade Project: Towards New Territory Beam Parameters - Access to the talk

Abstract

The LHC Injectors Upgrade (LIU) project aims at increasing the intensity and brightness in the LHC injectors in order to match the challenging requirements of the High-Luminosity LHC (HL-LHC) project, while ensuring high availability and reliable operation of the injectors complex well into the HL-LHC era. This requires extensive hardware modifications and new beam dynamics solutions in the entire LHC proton and ion injection chains: the new Linac4, the Proton Synchrotron Booster (PSB), the Proton Synchrotron (PS), the Super Proton Synchrotron (SPS), together with the ion PS injectors (the Linac3 and the Low Energy Ion Ring (LEIR)). All hardware modifications are being implemented during the 2019-2020 CERN accelerators shutdown.

A view on the future operation of the LHC injectors is also presented, highlighting the benefits in terms of beam parameters for both the LHC beams and those for fixed target physics.

 

Dec 11 : Dr Anna Soter, PSI
Title : Fundamental physics with muons: from the proton radius to antimatter gravity - Access to the talk

Abstract
At the Paul Scherrer Institute ongoing precision experiments involving muons and muonic atoms are targeting fundamental questions in flavor physics, probing the symmetries of the Standar Model, and measuring fundamental constants. In this talk these ongoing precision efforts will be introduced by concentrating on a newly proposed experiment to measure gravitational interaction of muonium (Mu). 
 
Carrying out a direct gravity experiment on Mu atoms would be of fundamental interest. Such a measurement would provide an exotic test of the weak equivalence principle, since the positive muon that dominates the Mu mass is an elementary antimatter particle, and also a lepton from  the second generation. 
 

To make this experiment possible, we are investigating methods to create a novel Mu source based on conversion in  superfluid helium (SFHe). The unique chemical properties of SFHe may allow the production of a high brightness atomic Mu beam in vacuum. A high quality atomic beam would then benefit next generation precision laser spectroscopy experiments, and would make intertial measurements in an atom interferometer feasible. The promising preliminary results on cold Mu production and the feasibility of a Mu interferometer.

 

Jan 15 : Paola Villa, University Wisconsin- Madison
Title : Romancing the CERN: Constructive Interferences between Physics and Literature - Access to the talk

Abstract

Physics and literature make odd bedfellows. More than 60 years after the famous C.P. Snow’s anathema sanctioning the incommunicability between the sciences and the humanities, the debate on the two cultures is still very much alive. Studies in the field of Literature and Science flourished in the past 20 years. The humanities, in general, have become increasingly aware of the important contribution of scientific ideas into shaping modern cultures and artistic productions. Yet, there still seems to be a fundamental asymmetry between literature’s understanding of physics and physics’ reception of literature. When confronted with the idea of what literature can do for science, the answer has been as much unanimous as reductive: “storytelling”. Is it really the case that all literature has to offer is a series of narrative tricks?

Drawing from examples of novels written by physicist and literary authors alike, I will explore some of the mechanisms that emerge at the crossroads of the two disciplines. What happens when the experimental apparatus of physics becomes the centerpiece of a fictional account? How does the material culture of detectors and particle accelerators influence the construction of a novel? And conversely, what tools does fiction offer to scientists in order to explore their ideas and their social environment? The goal of this presentation is not to discount the important lesson of “storytelling”, but rather to offer additional reasons why scientists, and physicists in particular, might want to pay more attention to literature.

 

 

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Département de Physique Nucléaire et Corpusculaire | 2017 | Impressum.