A.-M. Bachmann
A5116337564- Laser-Plasma Interactions and Diagnostics
- Particle Accelerators and Free-Electron Lasers
- Magnetic confinement fusion research
- Pulsed Power Technology Applications
- Ionosphere and magnetosphere dynamics
- Atomic and Molecular Physics
- Combustion and Detonation Processes
- Solar and Space Plasma Dynamics
- Laser-Matter Interactions and Applications
- Gamma-ray bursts and supernovae
- High-pressure geophysics and materials
- Laser-induced spectroscopy and plasma
- Radiation Therapy and Dosimetry
University of California, Los Angeles
2025
University of Rochester
2024
Max Planck Institute for Physics
2016-2020
European Organization for Nuclear Research
2017-2020
Max Planck Society
2020
Technical University of Munich
2020
Google (United States)
2019
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)...
Abstract When compressed, certain lattices undergo phase transitions that may allow nuclei to gain sig-
nificant kinetic energy. To explore the dynamics of this phenomenon, we develop a methodology
to study Coulomb coupled N-body systems constrained sphere, as in Thomson problem.
We initialize N total Boron point particles on surface allowing them to
equilibrate via scattering with viscous damping term. simulate transition,
we remove Nrm particles,...
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.
We study experimentally the effect of linear plasma density gradients on self-modulation a 400\,GeV proton bunch. Results show that positive/negative gradient in/decreases number micro-bunches and relative charge per micro-bunch observed after 10\,m plasma. The measured modulation frequency also in/decreases. With largest positive we observe two frequencies in power spectrum. are consistent with changes wakefields' phase velocity due to adding slow during growth predicted by theory.
Abstract We briefly compare in numerical simulations the relativistic ionization front and electron bunch seeding of self-modulation a proton plasma. When parameters are such that initial wakefields equal with two methods, evolution maximum longitudinal along plasma is similar. also propose possible seeding/injection scheme using single we will study upcoming works.
AWAKE develops a new plasma wakefield accelerator using the CERN SPS proton bunch as driver Muggli et al. (2017). The propagates through 10m long rubidium plasma, induced by an ionizing laser pulse. co-propagation of pulse with seeds self modulation instability that transforms to train hundreds bunchlets which drive wakefields. Therefore radius must exceed radius. Schlieren imaging is proposed determine on both ends vapor source. We use estimate column excited atoms. A tunable, narrow...
In AWAKE a self-modulated proton bunch drives wakefields in plasma. Recent experiments successfully demonstrated many aspects of the self-modulation drive as well acceleration test electrons. Next will focus on producing multi-GeV accelerated electron with low emittance and energy spread. The experiment requires variety advanced beam diagnostics to characterize at picosecond time scale. These include optical transition radiation streak camera for short long scale detailed imaging hosing,...