A5103060725- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Advanced X-ray Imaging Techniques
- Gyrotron and Vacuum Electronics Research
- Superconducting Materials and Applications
- Laser Design and Applications
- Social and Educational Sciences
- Magnetic confinement fusion research
- Particle Detector Development and Performance
- Photocathodes and Microchannel Plates
- Photonic and Optical Devices
- Modeling and Simulation Systems
- Inertial Sensor and Navigation
- Advanced Fiber Laser Technologies
- Real-time simulation and control systems
- Adaptive optics and wavefront sensing
- Geophysics and Sensor Technology
- Vehicle Dynamics and Control Systems
- Control Systems and Identification
- Teleoperation and Haptic Systems
- Advanced Control Systems Optimization
- Particle physics theoretical and experimental studies
- Business Process Modeling and Analysis
- Fault Detection and Control Systems
- Distributed and Parallel Computing Systems
Helmholtz-Zentrum Berlin für Materialien und Energie
2022
Luftfartsverket (Sweden)
2010-2022
Brookhaven National Laboratory
2006-2018
MAX IV Laboratory
2017
RIKEN BNL Research Center
2006-2007
Thomas Jefferson National Accelerator Facility
2004
Lund University
2003
Lawrence Berkeley National Laboratory
1991-2002
University of California, Berkeley
1991-2002
Paul Scherrer Institute
1998
A known problem of the HCCI engine is its lack direct control andits requirements feedback control. Today there exists severaldifferent means to an engine, such as dual fuels,variable valve actuation, inlet temperature and compression ratio.Independent actuation method a sensor needed. In this paper weperform closed-loop based on two different sensors, pressureand ion current sensor. Results showing that they give similar controlperformance within their operating range are presented.Also...
MAX IV will be Sweden's next-generation high-performance synchrotron radiation source. The project has recently been granted funding and construction is scheduled to begin in 2010. User operation for a broad international user community should commence 2015. facility comprised of two storage rings optimized different wavelength ranges, linac-based short-pulse free-electron laser the production coherent radiation. main source 528 m ultralow emittance ring operated at 3 GeV generation...
Measurement of ion current signal from HCCI combustionwas performed. The aim the work was to investigateif a measurable exists and if it is possible obtain useful information about combustion process. Furthermore, influence mixture quality in termsof air/fuel ratio EGR on wasstudied. A conventional spark plug used as ionizationsensor. DC voltage (85 Volt) applied acrossthe electrode gap. By measuring through thegap state gas can be probed. comparisonbetween measured pressure wasperformed,...
NSLS-II at Brookhaven National Laboratory is a new third-generation storage ring light source, whose construction on the verge of being approved by DOE. When completed, with its ability to provide users wide range spectrum, ranging from IR ultra-high brightness hard X-ray beams will replace existing two (20+ years old) NSLS sources. While presenting an overview accelerator system, this paper focuses strategy and development novel <1 nm emittance source.
General optimization procedure, computation methods used, and the obtained optimal parameters of undulators for NSLS‐II project beamlines are reported. The starts with high‐accuracy calculation undulator magnetic fields, using Radia magnetostatics code, a large set periods vertical gaps given type, materials scalable magnet geometry. From resulting sub‐set corresponding gaps, providing required low‐energy cut‐off values spectral harmonics each particular beamline, is determined. In parallel,...
We propose an approach to the optimization of segmented in-vacuum undulators, in which different segments along undulator may have gaps and periods. This enables close matching between vertical "envelope" electron beam motion a storage ring straight section (carefully satisfying associated "stay clear" constraint) and, at same time, precise tuning all fundamental photon energy. Placing together with periods introduce small kicks trajectories segment junctions, can be easily compensated,...
We propose a simple approach to the on-line control of nonlinear dynamics in storage rings, based on compensation resonance driving terms using beam losses as main indicator strength resonance. The correction scheme is built analysis first perturbative order and possibility independent power supplies sextupole magnets, which nowadays present many synchrotron light sources. Such freedom allows definition “smart knobs” attacking each separately. has been tested at Diamond source proved be...
A successful GeV scale energy recovery demonstration with high ratio of accelerated-to-recovered energies (50:1) was recently carried out on the CEBAF recirculating linear accelerator. Future (multi-GeV), current (hundreds milli-Amperes) beams would require gigaWatt-class RF systems in conventional linacs - a prohibitively expensive proposition. However, invoking alleviates extreme power demands; required becomes nearly independent beam current, which improves linac efficiency and increases...
The Twiss parameters and emittance have been measured for the ALS linac through non-linear /spl chisup 2/ fitting of beam size (fixed location) vs. focal strength a quadrupole triplet. obtained values used to calculate expected dispersion along linac-to-booster transport line giving good agreement with measurements. efforts resulted in superior injection into booster.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
The National Synchrotron Light Source II (NSLS-II) is a state of the art 3 GeV third generation light source at Brookhaven Laboratory. During spring/ summer 2014, storage ring was commissioned up to 50 mA without insertion devices. In fall we began commissioning project beamlines, which included seven devices on six ID ports. Beamlines IXS, HXN, CSX-1, CSX-2, CHX, SRX, and XPD-1 consist elliptically polarized undulator (EPU), damping wigglers (DW) in-vacuum undulators (IVU) covering from VUV...
We present the conceptual design of NSLS-II injection system [1, 2]. The consists a low-energy linac, booster and transport lines. review two different configurations; located in storage ring tunnel housed separate building. briefly discuss main parameters layout components.
The National Synchrotron Light Source II at Brookhaven Lab is a third-generation synchrotron radiation facility that has been commissioned in 2014. based on 3 GeV electron storage ring, which will circulate 500 mA of beam current 1 nm rad horizontal emittance. ring 792 meters circumference and accommodate more than 60 beamlines the final built-out. beamline sources range from insertion-devices located straight sections, bending magnets or three-pole-wigglers configured multiple branches....