A5083025100- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Quantum Chromodynamics and Particle Interactions
- Superconducting Materials and Applications
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Radiation Therapy and Dosimetry
- advanced mathematical theories
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- Neutrino Physics Research
- Gyrotron and Vacuum Electronics Research
- Cosmology and Gravitation Theories
- Electromagnetic Simulation and Numerical Methods
- Distributed and Parallel Computing Systems
- Astrophysics and Cosmic Phenomena
- Time Series Analysis and Forecasting
- Black Holes and Theoretical Physics
- Radiation Detection and Scintillator Technologies
- Advancements in Photolithography Techniques
- Magnetic confinement fusion research
- Anomaly Detection Techniques and Applications
Paul Scherrer Institute
2018-2024
ETH Zurich
2022
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2021
University of Amsterdam
2006-2020
Amsterdam University of the Arts
2010-2020
Royal Holloway University of London
2012-2020
Yale University
2011-2012
National Institute for Subatomic Physics
2006-2012
European Organization for Nuclear Research
2010-2012
Lawrence Berkeley National Laboratory
2011
Beam Delivery Simulation (BDSIM) is a program that simulates the passage of particles in particle accelerator. It uses suite standard high energy physics codes (Geant4, ROOT and CLHEP) to create computational model accelerator combines accurate tracking routines with all processes Geant4. This unique combination permits radiation detector background simulations accelerators where both required over long range or many revolutions circular machine, as well interaction material
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...
Tuning machine parameters of particle accelerators is a repetitive and time-consuming task that challenging to automate. While many off-the-shelf optimization algorithms are available, in practice their use limited because most methods do not account for safety-critical constraints each iteration, such as loss signals or step-size limitations. One notable exception safe Bayesian optimization, which data-driven tuning approach global with noisy feedback. We propose evaluate variant on two...
Many sophisticated computer models have been developed to understand the behaviour of particle accelerators. Even these complex often do not describe measured data. Interactions beam with external fields, other particles in same and walls all present modelling challenges. These can be challenging model correctly even modern supercomputers. This paper describes OPAL (Object Oriented Parallel Accelerator Library), a parallel open source tool for charged-particle optics linear accelerators...
Currently, PSI delivers the most intense continuous muon beam in world with up to a few 10 8 µ + /s. The High-Intensity Muon Beams (HIMB) project is developing new target station and beamlines able deliver /s, huge impact for low-energy, high-precision experiments. While next generation of proton drivers powers excess currently achieved 1.4 MW still require significant research development, focus HIMB improve surface yield geometry increase capture transmission solenoid-based beamline order...
The beam interruptions (interlocks) of particle accelerators, despite being necessary safety measures, lead to abrupt operational changes and a substantial loss time. A novel time series classification approach is applied decrease in the High-Intensity Proton Accelerator complex by forecasting interlock events. performed through binary windows multivariate series. are transformed into Recurrence Plots which then classified Convolutional Neural Network, not only captures inner structure but...
Machine learning (ML) is a subfield of artificial intelligence. The term applies broadly to collection computational algorithms and techniques that train systems from raw data rather than priori models. ML are now technologically mature enough be applied particle accelerators, we expect will become an increasingly valuable tool meet new demands for beam energy, brightness, stability. intent this white paper provide high-level introduction problems in accelerator science operation where...
The Isotope and Muon Production using Advanced-Cyclotron Target Technology Project (IMPACT) foresees the introduction of two new target stations three beamlines: one for radionuclide production surface muon production. latter forms project, High-Intensity Beams (HIMB), which plans to increase rate from current world record 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">8</sup> μ xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> /s up...
Emittance preservation in the beam delivery system (BDS) is one of major challenges Compact Linear Collider (CLIC). The fast detuning final focus optics requires an on-line tuning procedure order to keep luminosity close maximum. In this paper we discuss different techniques mitigate displacement magnets CLIC BDS and particular system. Some them require a measurement. Here study possibility use beam-beam background processes at 3 TeV c.m. energy as signal. particular, hadron multiplicity...
Beam stripping losses of H- ion beams by interactions with residual gas and electromagnetic fields are evaluated. These processes play an important role in compact cyclotrons where the beam is produced on internal source, they operate under high magnetic field. The implementation into dynamics code OPAL provides adequate framework to estimate for such as AMIT. analysis focused optimizing energy current delivered target. optimization performed adjusting parameters source regulate vacuum level...
The usage of numerical models to study the evolution particle beams is an essential step in design process accelerators. However, uncertainties input quantities such as beam energy and magnetic field lead simulation results that do not fully agree with measurements; hence, final machine will behave slightly differently than simulations. In case cyclotrons, discrepancies affect overall turn pattern or may even alter number turns machine. Inaccuracies at PSI Ring cyclotron facility harm...
Wakefields are an important factor in accelerator design, and a real concern when preserving the low beam emittance modern machines. Charge dependent size growth has been observed at Accelerator Test Facility (ATF2), test for future linear collider delivery systems. Part of explanation this is wakefields. In paper we present numerical calculations wakefields produced by several types geometrical discontinuities line as well tracking simulations to estimate induced effects. We also discuss...
Abstract IMPACT (Isotope and Muon Production with Advanced Cyclotron Target Technologies) is a proposed initiative envisaged for the high-intensity proton accelerator facility (HIPA) at Paul Scherrer Institute (PSI). As part of IMPACT, radioisotope target station, TATTOOS (Targeted Alpha Tumour Therapy Other Oncological Solutions) will allow production terbium radionuclides therapeutic diagnostic purposes. The beamline be located near UCN (Ultra Cold Neutron source) area, branching off from...
Beam Delivery Simulation (BDSIM) is a Geant4 and C++ based particle tracking code that seamlessly tracks particles through accelerators detectors, including the full range of interaction physics processes from Geant4. BDSIM has been successfully used to model beam loss background conditions for many current future linear such as Accelerator Test Facility 2 (ATF2) International Linear Collider (ILC). Current developments extend its application use with storage rings, in particular Large...
The High Intensity Proton Accelerator facility (HIPA) delivers a 590 MeV cw (50.6 MHz) proton beam with up to 1.4 MW power (2.4 mA) spallation and meson production targets serving particle physics experiments material research. main accelerator is the ring cyclotron, an isochronous machine accelerating injected 72 final MeV. A few meters downstream of electrostatic splitter was installed in 1980s originally designed peel off from <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"...