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IIHE invited seminar by Prof. Marcello Messina: The PTOLEMY project: from an idea to a real experiment to detect the Cosmological Relic Neutrinos
by MARIS Ioana Codrina 03 Feb '23

03 Feb '23

IIHE invited seminar: The PTOLEMY project: from an idea to a real experiment to detect the Cosmological Relic Neutrinos //// byProf.Marcello Messina(LNGS) //Friday 3 Feb 2023, 15:00→16:30Europe/Brussels //G/0-G.0.20 - Neutrino Room (Building G) Description In the first partthe seminara novelideaonthe detectionofCosmological Relic Neutrinos(CRN)andmore in general, onthe detection of neutrinos of vanishing energywill be presented.This ideais described in detail in the paper[1].The method is based on the factthatneutrino interactions on beta-instable nuclei havethe 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 discussedin a paper [2] recently published by the PTOLEMY collaboration will also be explained in details. [1] A. Cocco, G. Manganoand M. Messina, “Probing Low Energy Neutrino Backgrounds with Neutrino Capture on Beta Decaying Nuclei,” Journal of Cosmological and Astroparticle Physics0706(2007),15. [2]M.G. Betti et al, “A Design for an electromagnetic filter for precision energymeasurements at tritium endpoint”, Progress in particle and Nuclear Physics, 1206 (2019),120. *Short bio: *Dr, MessinagottheMaster degree and then the Ph.D. on the CHORUS experiment on the numu tonutau oscillation searches.After Ph.D.hemovedto the ETH-Zurich on a researchposition and then to theUniversity ofBern as Ober Assistant.In theseyearsheparticipated to several importantexperimentslikeOPERA, ICARUS, T2Kwith relevantcoordination roles of R&Ds activities and working groups.In 2011hemovedto the Columbia University in New Yorkon aposition of Research Scientist and lead the R&D effort that brought to designofthe XENON1T detector.In thesame experiment he hasbeenfirst theCommissioningand then the Operationmanager of the Experiment until 2017whenhemovedon the roleof Technical Coordinatorof the XENONnTexperiment, which is the upgrade of theXENON1T.After the seminal paper[1]on therelic neutrino detection his interests switched towards relic neutrino detection up totheparticipatation to the conceptual design ofa novel electromagnetic filter concept. Dr. Messina ispresently theCo-Spokespersonsof the PTOLEMY project. Organised by Ioana Maris and Steven Lowette

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IIHE seminar: Friday 13/01 at 15:00 by Prof. Roberto Tenchini "The running of the electromagnetic coupling constant and the MUonE experiment"
by MARIS Ioana Codrina 13 Jan '23

13 Jan '23

Invited Seminars <https://indico.iihe.ac.be/category/6/> IIHE invited seminar: The running of the electromagnetic coupling constant and the MUonE experiment //// byProf.Roberto Tenchini //Friday 13 Jan 2023, 15:00→16:30Europe/Brussels //G/1-G.1.03 - J. Sacton (Building G) Description *Abstract:*Precision measurements in the electroweak sector require the knowledge of the fine structure constant, a(q^2 ), for their interpretation. In electroweak global fits, or in the interpretation of the results of the g-2 experiment, this “running constant” is computed from theory. In this seminar I will discuss the perspectives for direct measurements of a(q^2 ). In particular, I will describe in some detail the MUonE experiment, aimed at measuring the leading hadronic contribution to g-2 via high energy me scattering. *About the speaker:*prof. Roberto Tenchini played an important role in the fixed target NA7 experiment in the eighties. He then moved to LEP where he was involved in several measurements in the electroweak sector and became spokesperson for the ALEPH experiment. At LHC he has been convener of electroweak and top-quark physics groups within the CMS experiment. A few years ago, he proposed the MUonE experiment. He is currently president of the Italian national committee for particle physics at accelerators (INFN CSN1). Organised by Ioana Maris and Steven Lowette

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