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CPT INVARIANCE TESTS IN NEUTRAL KAON DECAY

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Chinese Physics C 2016年第10期40卷 707-709页

作者： M. Antonelli lnf-infn, Frascati lnf-infn Frascati infn Sezione di Napoli

CPT theorem is based on three assumptions： quantum field theory, locality, and Lorentz invariance, and thus it is a fundamental probe of our basic understanding of particle physics. Strangeness oscillation in K^0 -K^... 详细信息

关键词： CPT定理介子衰变 Lorentz 中性测试变性量子场论粒子物理

Impact of laser chirp on the polarization of terahertz from two-color plasma

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Photonics Research 2023年第6期11卷 978-985页

作者： SEN MOU LUCA TOMARCHIO ANNALISA D’ARCO MARTA DI FABRIZIO SALVATORE MACIS ALESSANDRO CURCIO LUIGI PALUMBO STEFANO LUPI MASSIMO PETRARCA infn-Roma1 and Physics Department University of Rome“La Sapienza”00185 RomeItaly Physics Department University of Rome“La Sapienza”00185 RomeItaly SBAI Department of Basic and Applied Sciences for EngineeringUniversity of Rome“La Sapienza”00161 RomeItaly Centro de Laseres Pulsados(CLPU) 37185 VillamayorSalamancaSpain infn-lnf 00044 FrascatiItaly

Two-color plasma,induced by two lasers of different colors,can radiate ultra-broadband and intense terahertz(THz)pulses,which is desirable in many technological and scientific *** was found that the polarization of the emitted THz depends on the phase difference between the fundamental laser wave and its second *** investigation suggests that chirp-induced change of pulse overlap plays an important role in the THz yield from two-color ***,the effect of laser chirp on THz polarization remains ***,we investigate the impact of laser chirp on THz *** is unveiled that the chirp-induced phase difference affects THz ***,positive and negative chirps have opposite effects on the variation of the THz polarization versus the phase *** polarization of THz generated by a positively chirped pump laser rotates clockwise with an increasing phase difference,while it rotates anticlockwise when generated by a negatively chirped pump laser.

关键词： polarization laser pump

Ultra-broadband near-infrared NOPAs based on the nonlinear crystals Bi BO and YCOB

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High Power Laser Science and Engineering 2020年第3期8卷 6-15页

作者： Mario Galletti Hugo Pires Victor Hariton Joana Alves Pedro Oliveira Marco Galimberti Goncalo Figueira GoLP/Instituto de Plasmas e Fusao Nuclear Instituto Superior TecnicoUniversidade de Lisboa1049-001 LisboaPortugal Central Laser Facility Science and Technology Facilities CouncilRutherford Appleton LaboratoryHarwell Science and Innovation CampusDidcotUK infn-lnf Via Enrico Fermi 5400044 FrascatiItaly

We evaluate and demonstrate ultra-broadband near-infrared noncollinear optical parametric amplification in two nonlinear crystals,bismuth borate(Bi BO)and yttrium calcium oxyborate(YCOB),which are not commonly used for this *** spectral bandwidth is of the microjoule level;the amplified signal is≥200 nm,capable of supporting sub-10 fs *** results,supported by numerical simulations,show that these crystals have a great potential as nonlinear media in both low-energy,few-cycle systems and high peak power amplifiers for terawatt to petawatt systems based on noncollinear optical parametric chirped pulse amplification(NOPCPA)or a hybrid.

关键词： ultrafast laser high power laser nonlinear optics ultra-broadband noncollinear OPA YCOB and Bi BO nonlinear crystal

Ultra-broadband all-OPCPA petawatt facility fully based on LBO

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High Power Laser Science and Engineering 2020年第4期8卷 1-16页

作者： Mario Galletti Pedro Oliveira Marco Galimberti Munadi Ahmad Giedre Archipovaite Nicola Booth Emerald Dilworth Andy Frackiewicz Trevor Winstone Ian Musgrave Cristina Hernandez-Gomez GoLP/Instituto de Plasmas e Fusao Nuclear Instituto Superior TecnicoUniversidade de Lisboa1049-001 LisboaPortugal Central Laser Facility Science and Technology Facilities CouncilRutherford Appleton LaboratoryHarwell Science and Innovation CampusDidcotUK infn-lnf Via Enrico Fermi 5400044 FrascatiItaly School of Engineering and Physical Sciences Heriot-Watt UniversityEdinburghUK

A petawatt facility fully based on noncollinear optical parametric chirped pulse amplification(NOPCPA)technology,Vulcan OPPEL(Vulcan OPCPA PEtawatt Laser),is *** system will be coupled with the existing hybridCPA/OPCPA VULCAN laser system(500 J,500 fs beamline;250 J,ns regime beamline)based on Nd:glass *** pulse duration(20 times shorter)combined with the system design will allow the auxiliary beamline and its secondary sources to be used as probe beams for longer pulses and their interactions with *** newly designed system will be mainly dedicated to electron beam generation,but could also be used to perform a variety of particle acceleration and optical radiation detection experimental *** this communication,we present the entire beamline design discussing the technology choices and the design supported by extensive simulations for each system ***,we present experimental results and details of our commissioned NOPCPA picosecond front end,delivering 1.5 mJ,~180 nm(1/e^(2))of bandwidth compressed to sub-15 fs.

关键词： high-power laser LBO nonlinear crystal nonlinear optics ultra-broadband OPA ultrafast laser

Development of X-band accelerating structures for high gradients

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Chinese Physics C 2012年第7期36卷 639-647页

作者： S. Bini V. Chimenti A. Marcelli L. Palumbo B. Spataro V. A. Dolgashev S. Tantawi A. D. Yeremian Y. Higashi M. G. Grimaldi L. Romano F. Ruffino R. Parodi infn-lnf Via E. Fermi 40 00044 Frascati (RM) Italy University of Rome Sapienza Dipartimento di EnergeticaVia A. Scarpa 14 00185 Rome Italy SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo Park CA 94025 USA KEK 1-1 Oho Tsukuba Ibaraki 305 Japan University of Catania Dipartimento di Fisica e Astronomia & MATIS-IMM-CNRVia S. Sofia 64 95123 Catania Italy infn-Genova Via Dodecaneso 33 16146 Genova Italy

Short copper standing wave （SW） structures operating at an X-band frequency have been recently designed and manufactured at the Laboratori Nazionali di Frascati of the Istituto Nazionale di Fisica Nucleare （infn） using the vacuum brazing technique. High power tests of the structures have been performed at the SLAC National Accelerator Laboratory. In this manuscript we report the results of these tests and the activity in progress to enhance the high gradient performance of the next generation of structures, particularly the technological characterization of high performance coatings obtained via molybdenum sputtering.

关键词： high-gradients soft X-ray FEL RF cavities for particle accelerators RF sputtering

Review on TNSA diagnostics and recent developments at SPARC LAB

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High Power Laser Science and Engineering 2019年第3期7卷 228-239页

作者： Fabrizio Bisesto Mario Galletti Maria Pia Anania Massimo Ferraro Riccardo Pompili Mordechai Botton Elad Schleifer Arie Zigler infn-lnf Via Enrico Fermi 4000044 FrascatiItaly Central Laser Facility Science and Technology Facilities CouncilRutherford Appleton LaboratoryHarwell Science and Innovation CampusDidcot 0X11 OQXUK GoLP Instituto de Plasmas e Fusao Nuclear Instituto Superior TecnicoUniversidade de LisboaAv.Rovisco Pais 1049-001 LisbonPortugal Racah Institute of Physics Hebrew University91904 JerusalemIsrael

Interaction between high-intensity lasers with solid targets is the key process in a wide range of novel laser-based particle accelerator schemes,as well as electromagnetic radiation *** to all the processes is the generation of femtosecond pulses of relativistic electrons emitted from the targets as forerunners of the later-time principal products of the interaction *** this paper,some diagnostics employed in laser–solid matter interaction experiments related to electrons,protons,ions,electromagnetic pulses(EMPs)and X-rays are ***,we present our experimental study regarding fast electrons and EMPs utilizing a femtosecond-resolution detector previously adopted only in accelerator facilities.

关键词： high power laser laser-plasma interaction pulsed electric field diagnostic ultra-short high-intensity laser pulses

Advanced Laser Retroreflectors for Astrophysics and Space Science

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Journal of Applied Mathematics and Physics 2015年第2期3卷 218-227页

作者： S. Dell’ Agnello G. Delle Monache R. Vittori A. Boni C. Cantone E. Ciocci M. Martini G. Patrizi M. Tibuzzi G. Bianco D. Currie N. Intaglietta L. Salvatori C. Lops S. Contessa L. Porcelli C. Mondaini P. Tuscano M. Maiello Istituto Nazionale di Fisica Nucleare—Laboratori Nazionali di Frascati (infn-lnf) Frascati Italy Agenzia Spaziale Italiana—Centro di Geodesia Spaziale (ASI-CGS) Matera Italy University of Maryland at College Park MD USA

We developed advances laser retroreflectors for solar system exploration, geodesy and for precision test of General Relativity (GR) and new gravitational physics: a micro-reflector array (INRRI, Instrument for landing-Roving laser Retroreflectors Investigations), a midsize reflector array for the European Earth Observation (EO) program, Copernicus (CORA, COpernicus laser Retroreflector Array), a large, single-retroreflector (MoonLIGHT, Moon Laser Instrumentation for General relativity High accuracy Tests). These laser retroreflectors will be fully characterized at the SCF_Lab (Satellite/lunar/GNSS laser ranging/altimetry Cube/microsat Characterization Facilities Laboratory), a unique and dedicated infrastructure of infn-lnf (***/esperimenti/etrusco/). Our research program foresees several activities: 1) Developing and characterizing the mentioned laser retroreflector devices to determine landing accuracy, rover positioning during exploration and planetary/Moon’s surface georeferencing. These devices will be passive, laser wavelength- independent, long-lived reference point. INRRI will enable the performance of full-column measurement of trace species in the Mars atmosphere by future space-borne lidars. These measurements will be complementary to highly localized measurements made by gas sampling techniques on the Rover or by laser back-scattering lidar techniques on future orbiters and/or from the surface. INRRI will also support laser and quantum communications, carried out among future Mars Orbiters and Mars Rovers. This will be possible also because the INRRI laser retroreflectors will be metal back-coated and, therefore, will not change the photon polarization. The added value of INRRI is its low mass, compact size, zero maintenance and its usefulness for any future laser altimetry, ranging, communications, atmospheric lidar capable Mars orbiter, for virtually decades after the end of the Mars surface mission, like the Apollo and Lunokhod lunar laser

关键词： General Relativity Satellite Laser Ranging (SLR) Lunar Laser Ranging (LLR) Cube Corner Retroreflectors (CCR)

Molybdenum sputtering film characterization for high gradient accelerating structures

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Chinese Physics C 2013年第9期37卷 73-79页

作者： S.Bini B.Spataro A.Marcelli S.Sarti V.A.Dolgashev S.Tantawi A.D.Yeremian Y.Higashi M.G.Grimaldi L.Romano F.Rufno R.Parodi G.Cibin C.Marrelli M.Migliorati C.Caliendo infn - lnf Via E. Fermi 40Frascati (RM) 00044 Italy NSRL University of Science and Technology of China Chinese Academy of Sciences University of Rome-Sapienza Dipartimento di FisicaPiazzale Aldo Moro 5Rome 00185Italy SLAC National Accelerator Laboratory 2575 Sand Hill RoadMenlo ParkCA 94025USA KEK 1-1 Oho TsukubaIbaraki 305Japan University of Catania Dipartimento di Fisica e Astronomia & MATIS-IMM-CNRVia S. Sofia 64Catania 95123Italy infn-Genova Via Dodecaneso 33Genova 16146Italy Diamond Light Source ChiltonDidcotOxford OX110DEUK University of Roma-Sapienza Dipartimento di Scienze di Base e Applicate per l’IngegneriaVia A. ScarpaRoma 14-00161-Italy Istituto dei Sistemi Complessi ISC-CNRArea della Ricerca di Roma 1Via Salaria km 29.300MonterotondoRome 00040Italy

Technological advancements are strongly required to fulfill the demands of new accelerator devices with the highest accelerating gradients and operation reliability for the future colliders. To this purpose an extensive R^zD regarding molybdenum coatings on copper is in progress. In this contribution we describe chemical composition, deposition quality and resistivity properties of different molybdenum coatings obtained via sputtering. The deposited films are thick metallic disorder layers with different resistivity values above and below the molibdenum dioxide reference value. Chemical and electrical properties of these sputtered coatings have been characterized by Rutherford backscattering, XANES and photoemission spectroscopy. We will also consider multiple cells standing wave section coated by a molybdenum layer designed to improve the performance of X-Band accelerating systems.

关键词： linear accelerator cavities X-band coatings XANES resistivity

Simultaneous observation of ultrafast electron and proton beams in TNSA

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High Power Laser Science and Engineering 2020年第2期8卷 147-152页

作者： Fabrizio Bisesto Mario Galletti Maria Pia Anania Gemma Costa Massimo Ferrario Riccardo Pompili Arie Zigler Fabrizio Consoli Mattia Cipriani Martina Salvadori Claudio Verona infn-lnf Via Enrico Fermi 5400044 FrascatiItaly Central Laser Facility Science and Technology Facilities CouncilRutherford Appleton LaboratoryHarwell Science and Innovation CampusDidcot OX110QXEngland GoLP Instituto de Plasmas e Fusao Nuclear Instituto Superior TecnicoUniversidade de LisboaAv.Rovisco Pais1049-001 LisbonPortugal Racah Institute of Physics Hebrew University91904 JerusalemIsrael ENEA Fusion and Technologies for Nuclear Safety and Security Department C.R.FrascatiVia E.Fermi 4500044 FrascatiItaly Universita’di Roma La Sapienza Piazzale Aldo Moro 500185 RomaItaly INRS-EMT VarennesQuebecCanada University of Rome“Tor Vergata” Industrial Engineering DepartmentVia Cracovia 5000133 RomaItaly

The interaction of ultra-intense high-power lasers with solid-state targets has been largely studied for the past 20 years as a future compact proton and ion ***,the huge potential established on the target surface by the escaping electrons provides accelerating gradients of TV/*** process,called target normal sheath acceleration,involves a large number of phenomena and is very difficult to study because of the picosecond scale *** the SPARC LAB Test Facility,the high-power laser FLAME is employed in experiments with solid targets,aiming to study possible correlations between ballistic fast electrons and accelerated *** detail,we have installed in the interaction chamber two different diagnostics,each one devoted to characterizing one *** first relies on electro-optic sampling,and it has been adopted to completely characterize the ultrafast electron *** the other hand,a time-of-flight detector,based on chemical-vapour-deposited diamond,has allowed us to retrieve the proton energy *** this work,we report preliminary studies about simultaneous temporal resolved measurements of both the first forerunner escaping electrons and the accelerated protons for different laser parameters.

关键词： electro-optic sampling diagnostics high-power laser laser-plasma interaction time-of-flight diagnostics target normal sheath acceleration ultrashort high-intensity laser pulses