Tag Archives: Evento scientifico

Inaugurazione dell’aula intitolata all’artefice della nascita dei Laboratori di Frascati. Il prossimo 24 aprile, il prof. Giorgi Salvini avrebbe compiuto 98 anni. I Laboratori Nazionali di Frascati, in occasione dell’inaugurazione dell’aula a lui intitolata, desiderano ricordare chi, a soli 34 anni, fu l’artefice della nascita dei Laboratori e tra i fondatori della ricerca in Fisica delle Particelle in Italia. E’ gradita conferma di partecipazione. REGISTRATI Info & Programma: https://agenda.infn.it/event/salvini2018

The purpose of this mini-workshop is to review some of the most advanced studies muon production and on the use high power beam interceptors in high energy physics and to discuss the possible applications to muon beam production from positron on target. Videoconference Room connection

The decay K+->pi+nunu has a very precisely predicted branching ratio (BR) of less than 10^-10 and is one of the best candidates to reveal indirect effects of new physics at high mass scales. The NA62 experiment at CERN SPS is designed to measure BR(K+->pi+nn) with in-flight decays, a novel technique for this channel. NA62 took its first physics data in 2016, reaching sensitivity to the decay at the Standard Model BR. The experiment collected 10 times more statistics in 2017 and a similar amount of data is expected from the 2018 run. The preliminary result on K+->pi+nunu from the full 2016 data set will be presented and prospects for future improvements will be discussed.

The General Relativity (GR) surely the most elegant theory in our possession, in spite of the recent measurement of Gravitational waves, has not yet been quantized and requires, in order to be compatible with cosmological observations, very unnatural hypotheses. Other theories came on age (MOND, Milne-Universe, etc.) but they do not seem to answer all the questions. On another side the very presence of negative energy solutions in Quantum Equations has always required an interpretation of the negative masses. What would be the scenario if we simply considered repulsive the gravitational interaction between "positive" masses and "negative" masses, between matter and antimatter? Various questions are proposed: A) A repulsive gravitational interaction is compatible with the elegant apparatus of the RG? B) Does a repulsive gravitational relationship generate at least one measurable phenomenon (contribution to CPV) in a viable experimental system? We propose an experimental test of the gravitational interaction with antimatter by measuring the branching fraction of the CP violating decay of KL in space or on the Moon. A 5 sigma discrimination may be obtained by collecting the KL produced by the cosmic proton flux within a few years. C) A repulsive gravitational relationship generates phenomena and suggests new modalities that can be the basis of an elegant alternative to "Dark Matter" and "Dark Energy".

The MDISim toolkit is used to evaluate and characterize the beam-gas induced background in the FCC-ee Interaction Region. MDISim allows a full characterization of this beam background source with the locations where the beam-gas scattering occurs as well as the loss points, as a function of different vacuum conditions and composition, for the nominal optics and parameters.

Since 2011 the international seminar AARP has been organized as series of the meetings dedicated to frontiers topics in fundamental and applied research associated to new techniques of beam acceleration, novel powerful radiation sources and applications based on radiation physics. This seminar is devoted to the discussion within various XlabF projects and collaborations based on the physics of polycapillary x-ray optics and its applications.

L’INFN e i Laboratori Nazionali di Frascati portano avanti una intensa attività di ricerca tecnologica i cui prodotti, oltre che nella ricerca fondamentale, trovano applicazione in diversi campi di interesse sia sociale che industriale. In questo ciclo di seminari, dedicati ognuno a tecnologie e infrastrutture di interesse per un determinato settore, i LNF vogliono continuare il dialogo aperto con altri Enti, Università, Istituzioni ed Imprese in occasione dell’Open Day Imprese a Giugno 2017. Calendario Seminari 2018 Tecnologie per i Beni culturali: infrastrutture e servizi INFN per il Trasferimento Tecnologico – 8 Febbraio 2018 THz per Applicazioni Scientifiche e Trasferimento Tecnologico – 10 Aprile 2018 !CHAOS: un nuovo framework versatile e scalabile per il controllo e l'acquisizione dati di impianti e reti di dispositivi – 18 Giugno 2018 LNF e le tecnologie per lo Spazio: Laboratori di test e calibrazione – Ottobre 2018 Le tecnologie di magneti e vuoto: infrastrutture e servizi – Dicembre 2018

Muon beams are customarily obtained via K/π decays produced in proton interaction on target. We are proposing a new scheme to produce very low emittance muon beams using a positron beam of about 45 GeV interacting on electrons on target. This is a challenging and innovative scheme that needs a full design study. One of the innovative topics to be investigated is the behaviour of the positron beam stored in a low emittance ring with a thin target, that is directly inserted in the ring chamber to produce muons. Muons will be immediately collected at the exit of the target and transported to two mu+ and mu- accumulator rings. We present the main features of this scheme with an outline of the possible applications for a Multi-TeV collider.

This meeting is aimed to discuss the activities and synergies between UK and IT groups for the assembly of the ITk outer endcaps.

Most of the accelerator applications demand an high beam quality: ultra low energy spread and ultra high beam brightness i.e. bunches with high peak current and ultra low emittance. These quality parameters are also necessary to perform a good matching between beams from a conventional accelerator and a plasma one in the so called external injection scheme. Beam brightness is a fundamental parameter for applications as the Free Electron Laser (FEL), where the gain length is inversely proportional to the electron beam brightness in the Self Amplified Spontaneous Emission (SASE) X-ray regime. These requests in the quality electron beam means that a perfect control of bunches along the beam line is necessary, starting from the bunch generation up to the accelerator end, especially in the photoinjector region where the beam is not yet relativistic and is in the so called space charge regime. From these requests an optimal transport has to be found i.e. an optimization of some parameters and distances has to be fixed: laser on cathode parameters a proper position for the first accelerating section, an integrated magnetic field of the gun solenoid and an optimal bunch compression scheme. To match these stringent beam quality parameter requests, I optimized the beam dynamics for a new ultra high gradient 1.6 cells C-band (5.712 GHz) gun able to reach 240 MV/m as a peak field. By means of the ultra high gradient a better control of the space charge forces inside the bunch is possible. After optimizations on this electron …