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4/5/17, 10:30 AM
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Stefano Lupi (ROMA1)4/5/17, 11:00 AMTerahertz (THz) and Sub-THz High-Intensity Radiation (1 THz=33 cm-1=4 meV=300 microns), represents a new frontier in low-energy physics with applications ranging from Dirac electrons in graphene and 2-Dimensional exotic electronic systems, astrophysics, security and biomedical and cultural heritage imaging. In this talk I will review the existing and new THz and sub-THz sources, their main...Go to contribution page
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Enrica Chiadroni (LNF)4/5/17, 11:25 AMHigh peak power THz radiation with tunable spectral bandwidth is produced at SPARC_LAB as coherent radiation (CR) from relativistic, short (~100 fs) electron bunches. The characterization of the CR spectrum serves both as powerful longitudinal diagnostics of electron bunches that drive Free-Electron Lasers and plasma-based accelerators, and as intense source of THz radiation for studying...Go to contribution page
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Domenico Delle Side (LE)4/5/17, 11:50 AMThe interaction of an ultra-short laser pulse at relativistic intensities is known to produce plasmas composed by hot electrons and energetic ions. The characteristics of the energy transfer from the laser pulse to the plasma components are completely different from longer pulse situations and give rise to a wide range of new phenomena. Among these, terahertz radiation generation is one of the...Go to contribution page
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Prof. giuseppe dattoli (ENEA)4/5/17, 12:15 PMA new coherent source of FEL type is under development at ENEA frascati. The proposed device is a Coherent Auto-Resonance Maser (CARM) operating at 250 GHz, the proposal initially framed within the context of fusion research programs, has been originally conceived to provide a source for additional plasma heating. The peculiarity of the radiation, the frequency range and the intensity opens...Go to contribution page
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Giovanni Castorina (LNF)4/5/17, 12:40 PMTo enhance the maximum gradient achievable with a normal-conducting RF powered structures for particle beam accelerators, an intense activity of design, simulations, characterization of materials, technologies, construction and experimental tests of linear accelerating structures at high power is going on at INFN-LNF since a decade. Several studies have been carried out on hard linear...Go to contribution page
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Dr Massimo Petrarca ("Sapienza" University of Rome and Roma1-INFN)4/5/17, 2:30 PMIn the last few years the possibility to produce high intensity THz pulses and high gradient electric fields ~40 MV/cm has been reported. The same period of time can be considered as the dawn of acceleration schemes relying on laser-produced THz fields. Even though the proposed acceleration methodologies triggered a certain interest of the accelerator scientific community, the results are...Go to contribution page
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Prof. Antonello Andreone (Physics Department, University of Naples "Federico II" and INFN Naples Unit)4/5/17, 3:00 PMAmorphous Carbon (aC) is used to prevent or limit the insurgence of an electron cloud in the accelerator vacuum chamber. Since in the Compact Linear Collider (CLIC) small bunches are used, a full electromagnetic characterization of the amorphous carbon conductivity is needed in the high frequency region (millimeter wave range and above), where no literature data are available. Material...Go to contribution page
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Mariangela Cestelli Guidi (LNF)4/5/17, 3:30 PMThe LFN DaFne storage ring is a powerful source for Synchrotron Radiation (SR) in the FAR IR/THz domain (20µm-1mm). The brilliance of SR in this region is up to three order of magnitude higher than standard sources, opening the possibility to perform experiment in the solid, liquid and gas phase with application from material science to biology and chemistry. Case studies of experiments that...Go to contribution page
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Dr GianPaolo Papari (Physics Department, University of Naples "Federico II" and INFN Naples Unit)4/5/17, 4:30 PMTerahertz Time Domain Spectroscopy (THz-TDS) is a powerful tool for investigating the electrodynamic response of any kind of material and/or metamaterial. Using THz radiation (0.3-10 THz) one can retrieve in direct way essential information on material properties such as the refractive index and conductivity. These quantities are both described in terms of the complex dielectric function...Go to contribution page
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Dr Tommaso Cea (IIT)4/5/17, 5:00 PMThe recent observation of a transmitted THz pulse oscillating at three times the frequency of the incident light paves the way to a powerful protocol to access resonant excitations in a superconductor. Here we show that this nonlinear optical process is dominated by light-induced excitation of Cooper pairs, while the collective amplitude (Higgs) fluctuations of the superconducting order...Go to contribution page
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Antonio Davide Polosa (ROMA1), Gianluca Cavoto (ROMA1)4/5/17, 5:30 PMAn improved detection scheme for a light-shining-through-wall (LSW) experiment for axion-like particle searches is introduced. Extremely intense photon fluxes (from 100 kW to 1MW) from sources at frequencies in the sub-THz range are sent in an intense magnetic field where a photon to axion-like particle conversion is possible. A single photon detector in this frequency domain based on a...Go to contribution page
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Claudio Gatti (LNF)4/6/17, 9:15 AMAn elegant solution to the strong CP problem, proposed in 1977 by Peccei and Quinn, implies the existence of a new neutral boson called the Axion. Axions could explain the presence of cold dark matter in our Universe. Microwave cavity experiments looking for galactic axions (ADMX, QUAX) need to push their sensitivity beyond the quantum limit of amplifiers by means of single-photon counters in...Go to contribution page
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Dr Michele Caselle (Karlsruhe Institute of Technology)4/6/17, 9:40 AMThe ANKA storage ring can generate brilliant coherent synchrotron radiation (CSR) in the THz range due to a dedicated low-αc -optics with reduced bunch lengths. At higher electron currents the emission of CSR is not stable, but occurs in powerful bursts caused by micro-bunching instabilities. This intense THz radiation is very attractive for users. However, the reproducibility of the...Go to contribution page
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Jose' Guillermo Garcia Lorenzana (ROMA1)4/6/17, 10:05 AMI will present the SIMAP project proposal conceived within a collaboration among researchers from the INFN-cryogenic detectors laboratory, the ISC-CNR, IFN-CNR, and the Sapienza physics department. The aim of the project is to realize a prototype KID based on a high-Tc superconductor with the aim of lowering the operational costs for commercial applications in fields as medicine, astronomy,...Go to contribution page
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Daniele Di Gioacchino (LNF)4/6/17, 2:00 PMD. Di Gioacchino, C. Gatti, A. Marcelli, S. Lupi, M. Lankhorst and N. Poccia We recently assembled a nanometric pattern of niobium islands as a controllable regular fluxon-array used to investigate the phase transitions of stable and metastable states (vortex insulator-vortex metal state) in competing regular vortex configurations [1]. This system shows the evidence of Shapiro steps at...Go to contribution page
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Dr Roberto Leoni (Istituto di fotonica e nanotecnologie, CNR)4/6/17, 2:25 PMSi mostreranno i risultati ottenuti nello sviluppo di rivelatori superconduttori selettivi in frequenza che operano a frequenze THz. Il nostro approccio prevede l’integrazione di un hot electron bolometer (HEB), realizzato con un layer ultra sottile di nitruro di niobio (NbN) (3-5 nm), con un risonatore LC . Come è noto, il nitruro di niobio è il materiale di riferimento per la fabbricazione...Go to contribution page
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Alessandro Paiella (Sapienza and ROMA1)4/6/17, 2:50 PMIn this contribution, we are going to show the design and the electrical performance of the horn-coupled lumped element kinetic inductance detectors (LEKIDs) for the OLIMPO experiment. OLIMPO is a balloon borne mission, devoted to the study of the largest structures in the Universe, by detecting the Sunyaev-Zel’Dovich effect of the Comsic Microwave Background (CMB) photons crossing clusters of...Go to contribution page
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Augusto Marcelli (LNF)4/6/17, 3:15 PMTHz radiation is already used for spectroscopy and imaging applications. In particular, several imaging techniques have been already considered at these wavelengths for industrial and security applications, each one with specific advantages and drawbacks. Indeed, thanks to the high penetration of the THz radiation, a condition similar to X-ray radiation, it is possible to consider different...Go to contribution page
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4/6/17, 3:45 PM
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