Heiko Damerau
A5052537807- 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
- Laser-Plasma Interactions and Diagnostics
- Gyrotron and Vacuum Electronics Research
- Magnetic confinement fusion research
- Dark Matter and Cosmic Phenomena
- Muon and positron interactions and applications
- Radio Frequency Integrated Circuit Design
- High-Energy Particle Collisions Research
- Radiation Therapy and Dosimetry
- Atomic and Molecular Physics
- Solar and Space Plasma Dynamics
- Laser-Matter Interactions and Applications
- Microwave Engineering and Waveguides
- Ionosphere and magnetosphere dynamics
- Advanced Data Processing Techniques
- Crystallography and Radiation Phenomena
- Advanced Radiotherapy Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Radiation Detection and Scintillator Technologies
- Photocathodes and Microchannel Plates
- Advanced Frequency and Time Standards
European Organization for Nuclear Research
2014-2024
Campbell Collaboration
2020-2022
Google (United States)
2019
Sapienza University of Rome
2013
Fermi National Accelerator Laboratory
2012
Technical University of Darmstadt
2003
High energy particle accelerators have been crucial in providing a deeper understanding of fundamental particles and the forces that govern their interactions. In order to increase or reduce size accelerator, new acceleration schemes need be developed. Plasma wakefield acceleration, which electrons plasma are excited, leading strong electric fields, is one such promising novel technique. Pioneering experiments shown an intense laser pulse electron bunch traversing plasma, drives fields 10s...
The Advanced Proton Driven Plasma Wakefield Acceleration Experiment (AWAKE) aims at studying plasma wakefield generation and electron acceleration driven by proton bunches. It is a proof-of-principle R&D experiment CERN the world׳s first experiment. AWAKE will be installed in former CNGS facility uses 400 GeV/c beam bunches from SPS. experiments focus on self-modulation instability of long (rms ~12 cm) bunch plasma. These are planned for end 2016. Later, 2017/2018, low energy (~15 MeV)...
We give direct experimental evidence for the observation of full transverse self-modulation a long, relativistic proton bunch propagating through dense plasma. The exits plasma with periodic density modulation resulting from radial wakefield effects. show that is seeded by ionization front created using an intense laser pulse copropagating bunch. extends over length following seed point. By varying one order magnitude, we frequency scales expected dependence on density, i.e., it equal to...
The seeded self-modulation of a relativistic, charged particle bunch in plasma is shown to grow both along the and plasma, resulting transverse wakefield amplitudes that far exceed initial seed values.
AWAKE is a proton-driven plasma wakefield acceleration experiment. % We show that the experimental setup briefly described here ready for systematic study of seeded self-modulation 400\,GeV proton bunch in 10\,m-long rubidium with density adjustable from 1 to 10$\times10^{14}$\,cm$^{-3}$. short laser pulse used ionization vapor propagates all way along column, suggesting full vapor. occurs bunch, at time and follows affects bunch.
Plasma wakefield acceleration is a promising technology to reduce the size of particle accelerators. The use high energy protons drive wakefields in plasma has been demonstrated during Run 1 AWAKE programme at CERN. Protons 400 GeV drove that accelerated electrons 2 under 10 m plasma. collaboration now embarking on with main aims demonstrate stable accelerating gradients 0.5–1 GV/m, preserve emittance electron bunches and develop sources scalable 100s metres beyond. By end 2, scheme should...
Landau damping is a natural stabilization mechanism that mitigates coherent beam instabilities. In the longitudinal plane, loss of damping~(LLD) occurs when mode oscillation emerges from incoherent band bunch synchrotron frequencies. This work extends recent LLD studies to relevant case double-harmonic rf systems. Specifically, it shown in shortening (both systems phase at position for non-accelerating bucket), inductive impedance above transition energy results vanishing threshold binominal...
We use a relativistic ionization front to provide various initial transverse wakefield amplitudes for the self-modulation of long proton bunch in plasma. show experimentally that, with sufficient amplitude [$\ensuremath{\ge}(4.1\ifmmode\pm\else\textpm\fi{}0.4)\text{ }\text{ }\mathrm{MV}/\mathrm{m}$], phase modulation along is reproducible from event event, 3%--7% (of $2\ensuremath{\pi}$) rms variations all bunch. The not lower amplitudes. observe transition between these two regimes. Phase...
Coupling impedances and wakefields are fundamental quantities to characterize the electromagnetic interaction of a particle beam with surrounding environment. In particular, collective effects, triggered by these self-induced fields, may play an important role in stability machine performance. Within framework LHC Injectors Upgrade project, since significantly higher intensity is planned for CERN Proton Synchrotron, expected increase their influence on dynamics, evaluation becoming...
The AWAKE collaboration prepares a proton driven plasma wakefield acceleration experiment using the SPS beam at CERN. A long bunch extracted from interacts with high power laser and 10 m rubidium vapor cell to create strong wakefields allowing sustained electron acceleration. probe these is created by an accelerator consisting of rf-gun booster structure. This source should provide beams intensities between 0.1 1 nC, lengths 0.3 3 ps emittance order 2 mm mrad. structure accelerate electrons...
With the progress made in 2015, beams produced by CERN Proton Synchrotron using multiturn extraction (MTE) have been delivered to Super (SPS) for fixed-target physics run. Operation successfully started second half of September 2015 and continued until end proton program mid November. In this paper overall performance beam quality is discussed detail considering complete chain accelerators, from PS-Booster SPS. Moreover, a thorough comparison global MTE scheme against previously used...
A muon collider would enable the big jump ahead in energy reach that is needed for a fruitful exploration of fundamental interactions. The challenges producing collisions at high luminosity and 10 TeV centre mass are being investigated by recently-formed International Muon Collider Collaboration. This Review summarises status recent advances on colliders design, physics detector studies. aim to provide global perspective field outline directions future work.
This document is comprised of a collection updated preliminary parameters for the key parts muon collider. The follow on from October 2023 Tentative Parameters Report. Particular attention has been given to regions facility that are believed hold greater technical uncertainty in their design and have strong impact cost power consumption facility. data collected collaborative spreadsheet transferred overleaf.
CERN is currently carrying out an ambitious improvement programme of the full LHC Injectors chain in order to enable delivery beams with challenging HL-LHC parameters. The Upgrade project coordinates this massive upgrade program, and covers a new linac (Linac4 project) as well upgrades Proton Synchrotron Booster, Super Synchrotron. heavy ion injector also included, adding Linac3 Low Energy Ion Ring list accelerators concerned. performance objectives roadmap main will be presented, including...
The beam longitudinal dynamics code blond, utilized tool, has been developed at CERN since 2014. It emerged as a central tool for conducting simulations. In this paper, we present modular simulation suite and the various physics models that can be included combined by user. We detail reference frame, equations of motion, plethora options radio-frequency parameters such phase noise, fixed-field acceleration, feedback accelerators, well modeling collective effects synchrotron radiation. also...
We study experimentally the longitudinal and transverse wakefields driven by a highly relativistic proton bunch during self-modulation in plasma. show that wakefields' growth amplitude increase with increasing seed as well charge using maximum radius of distribution measured on screen downstream from externally injecting electrons measuring their final energy. Measurements agree trends predicted theory numerical simulations validate our understanding development self-modulation. Experiments...
Abstract In 2017, AWAKE demonstrated the seeded self-modulation (SSM) of a 400 GeV proton beam from Super Proton Synchrotron at CERN. The angular distribution protons deflected due to SSM is quantitative measure process, which agrees with simulations by two-dimensional (axisymmetric) particle-in-cell code LCODE about 5%. agreement achieved in population scans two selected plasma densities and scan longitudinal density gradient. reached only case wide enough simulation box (several...
Complementary to the physics research at LHC, several fixed-target facilities receive beams from LHC injector complex. To serve programme super proton synchrotron, high-intensity synchrotron are extracted using multiturn extraction technique based on trapping parts of beam in stable resonance islands. Considering number protons requested by future experimental facilities, such as proposed search for hidden particles experiment, currently delivered intensities insufficient. Experimental...
In this article, we briefly summarize the experiments performed during first Run of Advanced Wakefield Experiment, AWAKE, at CERN (European Organization for Nuclear Research). The final goal AWAKE 1 (2013 - 2018) was to demonstrate that \unit[10-20]{MeV} electrons can be accelerated GeV-energies in a plasma wakefield driven by highly-relativistic self-modulated proton bunch. We describe experiment, outline measurement concept and present results. Last, our plans future.