A5090453943- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Gyrotron and Vacuum Electronics Research
- Distributed and Parallel Computing Systems
- Magnetic confinement fusion research
- Laser-Plasma Interactions and Diagnostics
- High-Energy Particle Collisions Research
- Advanced X-ray Imaging Techniques
- International Science and Diplomacy
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Crystallography and Radiation Phenomena
- Radiation Therapy and Dosimetry
- Quantum chaos and dynamical systems
- Scientific Computing and Data Management
- Pulsed Power Technology Applications
- Electromagnetic Simulation and Numerical Methods
- Advanced Data Storage Technologies
- Atomic and Molecular Physics
- Photocathodes and Microchannel Plates
- Biomedical and Engineering Education
- Advances in Oncology and Radiotherapy
European Organization for Nuclear Research
2015-2024
SLAC National Accelerator Laboratory
1995-2022
Brookhaven National Laboratory
2007-2022
Fermi National Accelerator Laboratory
2021-2022
Stony Brook University
2022
Lawrence Berkeley National Laboratory
2022
University of California, Irvine
2022
Goethe University Frankfurt
2021
GSI Helmholtz Centre for Heavy Ion Research
2021
Niğde Ömer Halisdemir Üniversitesi
2021
The discovery by the ATLAS and CMS experiments of a new boson with mass around 125 GeV measured properties compatible those Standard-Model Higgs boson, coupled absence discoveries phenomena beyond Standard Model at TeV scale, has triggered interest in ideas for future factories. A circular e+e- collider hosted 80 to 100 km tunnel, TLEP, is among most attractive solutions proposed so far. It clean experimental environment, produces high luminosity top-quark, W Z studies, accommodates multiple...
Present and future accelerators' performances may be limited by the electron cloud (EC) effect. The EC formation evolution are determined wall-surface properties of accelerator vacuum chamber. We present measurements total secondary yield (SEY) related energy distribution curves electrons as a function incident-electron energy. Particular attention has been paid to emission process due very low-energy primary ($<20\text{ }\text{ }\mathrm{e}\mathrm{V}$). It is shown that SEY approaches unity...
Particle accelerators have been engines of discovery for many decades. The most powerful ones are used in particle physics where intense beams collide to study new particles. This has led groundbreaking discoveries our understanding matter and forces. In this article the key concepts behind development such colliders reviewed a historical perspective is provided evolution these machines. Approaches next-generation presented technology developments far-future that will further benefit...
Abstract Particle physics has arrived at an important moment of its history. The discovery the Higgs boson completed Standard Model, core theory behind known set elementary particles and fundamental interactions. However, Model leaves questions unanswered, such as nature dark matter, origin matter–antimatter asymmetry in Universe, existence hierarchy neutrino masses. To address these newly discovered boson, high-energy colliders are required. Future generations machines must be versatile,...
After 10 years of physics at the Large Hadron Collider (LHC), particle landscape has greatly evolved. Today, a staged Future Circular (FCC), consisting luminosity-frontier highest-energy electron–positron collider (FCC-ee) followed by an energy-frontier hadron (FCC-hh), promises most far-reaching program for post-LHC era. FCC-ee will be precision instrument used to study Z, W, Higgs, and top particles, offer unprecedented sensitivity signs new physics. Most infrastructure could reused...
Electrons generated and accumulated inside the beam-pipe form an ``electron cloud'' that interacts with a charged particle beam. If number of electrons is sizable, this beam-cloud interaction can give rise to two-stream instability, resulting in beam loss or emittance growth. The instability occur within single bunch, e.g., passing through cloud on successive turns storage ring, it be multibunch where motion bunches coupled via electron cloud. In paper, I review experimental evidence for,...
Discoveries at high-energy particle colliders have established the standard model of physics. Technological innovation has helped to increase collider energy a much faster pace than corresponding costs. New concepts will allow reaching ever higher luminosities and energies throughout coming century. Cost-effective strategies for implementation include staging. For example, future circular could first provide electron-positron collisions, then hadron collisions (proton-proton heavy-ion),...
The integrated luminosity, a key figure of merit for any particle-physics collider, is closely linked to the peak luminosity and beam lifetime. instantaneous collider constrained by number boundary conditions, such as available current, maximum beam-beam tune shift with acceptable stability reasonable lifetime (i.e., empirical ``beam-beam limit''), or event pileup in physics detectors. at high-luminosity hadron colliders largely determined particle burn off collisions. In future...
A conceptual design is presented of a novel energy-recovering linac (ERL) facility for the development and application energy recovery technique to linear electron accelerators in multi-turn, large current regime. The main characteristics powerful experiment (PERLE) are derived from Large Hadron Collider, an beam upgrade under study LHC, which it would be key demonstrator. PERLE thus projected as investigate efficient, high (HC) (>10 mA) ERL operation with three re-circulation passages...
A novel scheme for the focusing of high-energy leptons in future linear colliders was proposed 2001 [P. Raimondi and A. Seryi, Phys. Rev. Lett. 86, 3779 (2001)]. This has many advantageous properties over previously studied schemes, including being significantly shorter a given energy having better bandwidth. Experimental results from ATF2 accelerator at KEK are presented that validate operating principle such by demonstrating demagnification 1.3 GeV electron beam down to below 65 nm height...
Since the CERN ISR, hadron colliders have defined energy frontier. Noteworthy are conversion of Super Proton Synchrotron (SPS) into a proton-antiproton collider, Tevatron as well abandoned SSC in United States. Hadron likely to determine pace particle-physics progress also during next hundred years. Discoveries at past were essential for establishing so-called Standard Model particle physics. The world's present flagship LHC, including its high-luminosity upgrade HL-LHC, is set operate...
We sketch the actual European and international strategies possible future facilities. In near term High Energy Physics (HEP) community will fully exploit physics potential of Large Hadron Collider (LHC) through its high-luminosity upgrade (HL-LHC). Post-LHC options include a linear e+e− collider in Japan (ILC) or at CERN (CLIC), as well circular lepton hadron colliders China (CepC/SppC) Europe (FCC). conclude with acceleration approaches based on crystals, some perspectives for far...
A new tunnel of 80–100 km circumference could host a 100 TeV centre-of-mass energy-frontier proton collider (FCC-hh/VHE-LHC), with circular lepton (FCCee/TLEP) as potential intermediate step, and leptonhadron (FCC-he) additional option. FCC-ee, operating at four different energies for precision physics the Z, W, Higgs boson top quark, represents significant push in terms technology design parameters. Pertinent R&D efforts include RF system, topup injection scheme, optics arcs final focus,...
In response to a request from the CERN Scientific Policy Committee (SPC), machine parameters and expected luminosity performance for several proposed post-LHC collider projects at are compiled: three types of hadron colliders (HL-LHC upgrade, FCC-hh HE-LHC), circular lepton (FCC-ee), linear (CLIC), options lepton-hadron (LHeC, HE-LHeC, FCC-eh). Particular emphasis is put on availability, physics run time, efficiency. The information contained in this document was presented SPC Meeting...
Proton beams were successfully steered through the entire ring of CERN Large Hadron Collider (LHC) on September 10th 2008. A reasonable lifetime was achieved for counterclockwise beam, namely beam 2, after radiofrequency capture particle bunch established. This provided unique opportunity acquiring turn-by-turn betatron oscillations a maximum 90 turns right at injection. Transverse coupling not corrected and chromaticity estimated to be large. Despite this largely constrained scenario,...
During the beam commissioning of Large Hadron Collider (LHC) [LHC Design Report No. CERN-2004-003-V-1, 2004 [http://cds.cern.ch/record/782076?ln=en]; O. Br\"uning, H. Burkhardt, and S. Myers, Prog. Part. Nucl. Phys. 67, 705 (2012)] with 150, 75, 50, 25-ns bunch spacing, important electron-cloud effects, like pressure rise, cryogenic heat load, instabilities, or emittance growth, were observed. Methods have been developed to infer different key beam-pipe surface parameters by benchmarking...
In recent years the "crab-waist collision" scheme [P. Raimondi, Proceedings of 2nd SuperB Workshop, Frascati, 2006.; M. Zobov et al., Phys. Rev. Lett. 104, 174801 (2010)PRLTAO0031-900710.1103/PhysRevLett.104.174801] has become popular for circular e^{+} e^{-} colliders. The designs several future colliders are based on this scheme. So far beam-beam effects collisions under a large crossing angle with or without crab waist were mostly studied using weak-strong simulations. We present here...
The interaction between a low-density electron cloud in circular particle accelerator with circulating charged beam is considered. beam's space charge attracts the cloud, enhancing density near axis. It shown that this enhanced and image charges associated conducting wall of may have important consequences for dynamics propagation. tune shift due to obtained analytically compared new numerical model (QuickPIC) described here. Sample results are presented their significance current planned...