A5024471898- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Advanced X-ray Imaging Techniques
- Laser-Plasma Interactions and Diagnostics
- Laser Design and Applications
- Advanced Surface Polishing Techniques
- High-Energy Particle Collisions Research
- Advanced Data Storage Technologies
- Muon and positron interactions and applications
- Caching and Content Delivery
- Dark Matter and Cosmic Phenomena
- International Science and Diplomacy
- Scientific Computing and Data Management
- Distributed and Parallel Computing Systems
- Gyrotron and Vacuum Electronics Research
- Radiation Detection and Scintillator Technologies
- Optimization and Search Problems
European Organization for Nuclear Research
2016-2021
Karlsruhe Institute of Technology
2016
A beam optics scheme has been designed for the future circular collider-${e}^{+}{e}^{\ensuremath{-}}$ (FCC-ee). The main characteristics of design are: energy 45 to 175 GeV, 100 km circumference with two interaction points (IPs) per ring, horizontal crossing angle 30 mrad at IP and crab-waist [P. Raimondi, D. Shatilov, M. Zobov, arXiv:physics/0702033; P. in Proceedings 22nd Particle Accelerator Conference, PAC-2007, Albuquerque, NM (IEEE, New York, 2007), p. TUPAN037.] local chromaticity...
A new international study has just been launched to design a hadron collider with centre-of-mass energy of the order 100 TeV in 80–100 km tunnel as long-term goal. The includes 90–350 GeV lepton collider, seen potential intermediate step, and an ep option. This paper reports on overall parameters preliminary optics designs special emphasis Interaction Regions constraints arising for having host both colliders. Preliminary hardware specifications, magnetic field, gradient, lengths aperture...
The FCC (Future Circular Collider) study represents a vision for the next large project in high energy physics, comprising an 80-100 km tunnel that can house future 100 TeV hadron collider. also includes luminosity e+e- collider operating centre-of-mass range of 90-350 GeV as possible intermediate step, FCC-ee. FCC-ee aims at definitive electro-weak precision measurements Z, W, H and top particles, search rare phenomena. Although is based on known technology, goal performance calibration...
A beam optics scheme has been designed \cite{ref:arxiv} for the Future Circular Collider-$e^+e^-$ (FCC-ee). The main characteristics of design are: energy 45 to 175 GeV, 100 km circumference with two interaction points (IPs) per ring, horizontal crossing angle 30 mrad at IP and crab-waist local chromaticity correction. is implemented within correction system without additional sextupoles, by reducing strength one sextupoles vertical chromatic each side IP. So-called "tapering" magnets...
The operation of ring-based synchrotron light sources with short electron bunches increases the emission coherent radiation in THz frequency range. However, micro-bunching instability resulting from self-interaction bunch its own field limits stable constant intensity CSR to a particular threshold current. Above this threshold, longitudinal charge distribution and thus emitted vary rapidly continuously. Therefore, fast adaptive feedback system is appropriate approach stabilize dynamics...
Received 28 March 2017DOI:https://doi.org/10.1103/PhysRevAccelBeams.20.049901Published by the American Physical Society under terms of Creative Commons Attribution 4.0 International license. Further distribution this work must maintain attribution to author(s) and published article’s title, journal citation, DOI.© 2017 SocietyPhysics Subject Headings (PhySH)Research AreasBeam dynamicsBeam opticsNonlinear beam dynamicsSingle-particle dynamicsPhysical SystemsAccelerators & storage...
For future synchrotron light source development novel operation modes are under investigation. At the Karlsruhe Research Accelerator (KARA) an optics with negative momentum compaction has been proposed, which is currently commissioning. In this context, collective effects expected in regime studied initial focus on head-tail instability and micro-bunching resulting from CSR self-interaction. contribution, we will present proposed status of implementation for as well a preliminary discussion effects.
The Future Circular Collider (FCC) study investigates the feasibility of circular colliders in post-LHC era. sub-study FCC-ee is a 100 km electron positron collider energy range 90-365 GeV. In order to achieve design luminosity $10^{36}$cm$^{-2}$s$^{-1}$ continuous top-up injection required. injector chain therefore includes booster synchrotron same tunnel as rings. This paper presents lattice this and first dynamic aperture studies based on chromaticity correction sextupole scheme.
For future synchrotron light sources different operation modes are of interest. Therefore various currently being tested at the Karlsruhe Research Accelerator (KARA) including optics for a negative momentum compaction factor. These have been calculated and under commissioning KARA. Additionally, studies about expected collective effects in this regime performed, head-tail microbunching instabilities. In contribution we will present status discuss that be studied context.
The self-interaction of short electron bunches with their own radiation field can have a significant impact on the longitudinal beam dynamics in storage ring. While higher bunch currents increase power emitted CSR which be provided to dedicated experiments, it simultaneously amplifies strength self-interaction. Eventually, this leads formation dynamically changing micro-structures within and thus fluctuating emission, phenomenon that is generally known as micro-bunching or micro-wave...