Elenco seminari 2012
Martedi 7 Febbraio, ore 15, aula 200
S. Gliske (Argonne National Lab)
"Dihadron production in semi-inclusive deep inelastic scattering: a theoretical overview"
Mercoledi 8 Febbraio, ore 15, aula 200
S. Gliske (Argonne National Lab)
"SIDIS dihadron production at HERMES"
Mercoledi 7 Marzo, ore 11.30, aula 412
V. Novikov (ITEP)
"A few new comments on CPT theorem"
Martedi 13 Marzo, ore 11.00, aula 412
il Dr. Kent Wood (National Research Laboratory, Washington DC)
"Using Fermi LAT and Pan-STARRS as All-Sky Monitors for Correlated Observing."
Giovedi 15 Marzo, ore 15, aula riunioni 3 piano blocco B
F. Annulli (INFN, Roma)
"Misure di processi di annichilazione e+e- -> adroni con radiazione di stato iniziale a BABAR, e implicazioni per il calcolo del contributo adronico al momento magnetico anomalo del muone"
Martedi 2 Aprile, ore 11, aula 412
Zurab Berezhiani (Laboratori del Gran Sasso e Universita' dell'Aquila)
"Magnetic anomaly in the trapping of Ultra Cold Neutrons: signal for neutron oscillations to parallel world?"
Tipologia di seminario: Specifico, Teorico, Cosmologia/Fisica fondamentale
Martedi 3 Aprile, ore 15, aula 416
I. Sawicki (Institut fuer Theoretische Physik" di Heidelberg)
“Kinetic Gravity Braiding: A Stable Violation of the Null Energy Condition”
Tipologia di seminario: Specifico, Teorico, Cosmologia
Prof. Lesiak dell'Institute of Nuclear Physics di Cracovia, Copernicus Visiting Scientist presso l'Università di Ferrara.
'Monte Carlo techniques in physics'.
1a lezione: Martedi 17 Aprile, ore 15:30, aula 200
2a lezione: Mercoledi 18 Aprile, ore 15:30, aula 200
3a lezione: Giovedi 19 Aprile, ore xx, aula xx
4a lezione: Venderdi 20 Aprile, ore xx, aula xx
prossimo ciclo di lezioni in Giugno
Tipologia di seminario: Lezione, Tecniche di simulazione, indirizzato agli studenti
Giovedi 4 MAggio ore 15 aula 412
Andrea Beraudo (CERN)
"Jet-quenching in relativistic heavy-ion collisions: the contribution of medium-modified color flow"
Tipologia di seminario: Specifico, Teorico, QCD + Heavy Ion
Mercoledi 9 Maggio, ore 15, aula 412 ******** ANNULLATO *******
S. Focardi (Univ. Bologna)
"Energia dalla fusione fredda"
Verra' illustrato l'uso dei sistemi nichel-idrogeno come sorgenti di energia termica
Tipologia di seminario: Generale, Sperimentale, Energia
Lunedi 14 Maggio alle ore 11:00 aula 412 (aula da confermare)
prof. Yuri Kamyshkov del Department of Physics and Astronomy, University of Tennessee
"Matter-antimatter transformation via neutron-antineutron oscillation: status review and new searches with cold neutrons"
Tipologia di seminario: Specifico, Sperimentale, Fisica fondamentale
Giovedi 17 Maggio, ore 14:30, aula 412
Dr. Raffaella Margutti (Harvard University)
"A comprehensive statistical analysis of more than 650 gamma-ray bursts reveals a universal scaling"
Abstract: "The prompt phase of Gamma-Ray Bursts (GRBs) is followed by a long-lasting, multi-wavelength emission (the “afterglow”) whose origin is still debated. Key open questions remain to be answered: 1) Is the central engine still active during this phase? 2) Does the X-ray emission retain any kind of memory of the prompt phase? 3) Where is the dividing line between long and short GRBs? In this talk I review the observational properties of the X-ray afterglow emission, any theoretical model is required to explain. In particular, I present the results from a comprehensive statistical analysis of more than 650 GRB X-ray light-curves. This study revealed the existence of a number of statistically significant relations that link the X-ray to prompt parameters in long GRBs; short GRBs are outliers of the majority of these 2-par relations. More importantly, I report on the existence of a universal 3-parameter scaling that links the X-ray and the gamma-ray properties of BOTH long and short GRBs."
Tipologia di seminario: Specifico, Sperimentale, Astrofisica/Cosmologia
Giovedi 17 Maggio, ore 15:00, aula 300
Sergey Stark (INFN Legnaro)
"Superconducting Niobium Sputtered Copper 160 MHz Resonators For Ions Acceleration. Technology Development, Production, Installation and Online Performance"
Abstract: The Nb sputtering process on Copper Quarter Wave Resonators (QWRs) was first applied in Legnaro for the production of beta 0.13, 160 MHz cavities. In 1998 it was demonstrated that the same technology could be applied to the previously installed at Legnaro, beta 0.11, 160 MHz Pb/Cu resonators allowing a substantial increase of their performance. The results suggested to plan the upgrading of resonators in parallel to the necessary cryostat maintenance program, which started at the end of 1999 and was completed by the end of 2003.
8 high beta and 46 medium beta Nb sputtered resonators are now operating in ALPI. The average accelerating field has reached the value of 4.8 MV/m @ 7 W. Such value can be effectively sustained in operation due to the intrinsic mechanical stability of the sputtered cavity whose frequency is practically not influenced by fluctuations in the He bath pressure.
The contribution to ALPI equivalent voltage of the two types of cavities is increasing with time due to conditioning effect and at present they provide more than 45 MV to ALPI accelerating voltage.
Tipologia del seminario: sperimentale/cavita' acceleratrici, specialistico
Venerdi 18 Maggio, ore 11, aula 412
Dr. Anatoli Kashchuk (PNPI & INFN Ferrara)
"Laboratory test of a prototype for the PANDA forward tracker"
Abstract: Thin-wall straw-like drift tubes are the modern detectors in High Energy Physics experiments for measurements of particle coordinates with resolution of 100 microns for trackers. The PANDA experiment will be carried-out at the international FAIR facility in the GSI laboratory (Darmstadt, Germany). It plans to build on such tubes both the Central Tracker and the Forward Tracker. Results of tests in lab of the 2-layer prototypes constructed for the PANDA experiment are presented and discussed. Proposals and ideas for implementing the final modular detector based on the experience collected last years in Ferrara are made.
Tipologia di seminario: Sperimentale (rivelatori), Particelle
Martedi 22 Maggio, ore 15, aula 412
Dr. Marco TAVANI (Istituto di Astrofisica Spaziale e Fisica Cosmica dell'INAF di Roma),
"GAMMA-RAY ASTROPHYSICS WITH AGILE AND COSMIC PARTICLE ACCELERATION"
Abstract: Recent data by the AGILE and Fermi satellites provide a startling picture of our Universe at gamma-ray energies above 100 MeV. I will review the gamma-ray observations and focus on the issue of cosmic particle acceleration under extreme conditions. I will summarize data for Galactic and extragalactic sources, and concentrate on the recent evidence for cosmic-ray acceleration in Supernova Remnants (SNRs). I will discuss several SNRs for which a clear pattern of hadronic acceleration is emerging with interesting and somewhat unexpected properties. In particular, I will present the first clear evidence for neutral pion emission from a SNR as recently obtained by AGILE for the W44 source. I will then discuss the recent discovery by AGILE of transient gamma-ray emission from the Crab Nebula which is among the most powerful and efficient particle accelerators in our Galaxy. The paradigm of a constant Crab Nebula is now challenged by the recent AGILE and Fermi observations showing several episodes of very intense and rapid gamma-ray flares. I will discuss the challenge to current particle acceleration models in light of the surprising Crab Nebula gamma-ray data.
Tipologia di seminario: Sperimentale, Astrofisica.
Indicato per gli studenti di dottorato
Martedi 29 Maggio, ore 14, aula 412
Paolo Natoli (dipartimento di Fisica dell'Universita' di Ferrara)
'Planck: results and cosmological perspectives'
Abstract: The European Space Agency’s Planck satellite was launched on 14 May 2009, and has been surveying the sky stably and continuously with the two onboard instruments since 13 August 2009 until 14 January 2012. On this date, the High Frequency Instrument has reached the expected end of its cryogenic lifetime. The Low Frequency Instrument continues to gather data steadily, and is expected to do so for several months to come. The global performance of Planck is well in line with expectations. I will give an overview of the history of Planck’s first years of operations, describing the overall philosophy, motivations and key performance issues of the mission. I will also describe the Planck’s Early Release Compact Source Catalogue, the first data product of Planck to become public, comprising more than 10000 compact sources in the band 30-857 GHz, from nearby objects in the Galaxy to various classes of radio galaxies and dusty galaxies and to distant clusters of galaxies. I will also highlight the most prominent results from the recent second science release, which have been presented last February at a dedicated conference in Bologna. Finally, I will discuss the much awaited cosmological expectations: Planck will probe the conditions of the early Universe at energy scales inconceivable for terrestrial experiments. Primordial gravitational waves, the inflationary phase and its suggested connection with the Higgs boson sought at CERN, as well as fundamental physics beyond the standard model, are all targets on Planck's schedule.
Tipologia del seminario: Generale, Sperimentale, Astrofisica/Cosmologia, indicato anche agli studenti del corso di laurea in fisica.
