A5031895000- Distributed and Parallel Computing Systems
- Advanced Data Storage Technologies
- Scientific Computing and Data Management
- Nuclear Physics and Applications
- Particle Detector Development and Performance
- Research Data Management Practices
- Nuclear physics research studies
- Parallel Computing and Optimization Techniques
- Medical Imaging Techniques and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Particle Accelerators and Free-Electron Lasers
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Big Data Technologies and Applications
- Superconducting Materials and Applications
- Computational Physics and Python Applications
- Astrophysics and Cosmic Phenomena
- Advanced X-ray and CT Imaging
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Caching and Content Delivery
- Advanced X-ray Imaging Techniques
- Astronomical and nuclear sciences
- Advanced NMR Techniques and Applications
- Advanced Computational Techniques and Applications
Deutsches Elektronen-Synchrotron DESY
2003-2024
Universität Hamburg
1991-2005
University of Bonn
1998
Excitation functions of proton-proton elastic scattering cross sections have been measured in narrow steps for projectile momenta ${p}_{p}$ (energies ${T}_{p}$) from $1100$ to $3300\mathrm{MeV}/c$ (500 2500 MeV) the angular range $35\ifmmode^\circ\else\textdegree\fi{}\ensuremath{\le}{\ensuremath{\Theta}}_{\mathrm{c}.\mathrm{m}.}\ensuremath{\le}90\ifmmode^\circ\else\textdegree\fi{}$ with a detector providing...
Data from high-energy physics (HEP) experiments are collected with significant financial and human effort mostly unique. An inter-experimental study group on HEP data preservation long-term analysis was convened as a panel of the International Committee for Future Accelerators (ICFA). The formed by large collider-based investigated technical organisational aspects preservation. intermediate report released in November 2009 addressing general issues HEP. This paper includes extends report. It...
Fission of $^{197}\mathrm{Au}$${,}^{232}$Th+838-MeV $^{32}\mathrm{S}$ projectiles was studied by measuring fragment coincident neutrons. Neutron energy spectra were decomposed into preequilibrium, prescission, and postscission contributions with a constrained moving source analysis. Excitation energies deduced from the transferred linear momentum are consistent calculations applying Boltzmann master equation, an balance based upon experimental neutron multiplicities charged particles...
Data play a central role in most fields of science. In recent years, the amount data from experiment, observation, and simulation has increased rapidly complexity grown. Also, communities shared storage have become geographically more distributed. Therefore, methods techniques applied to scientific need be revised partially replaced, while keeping community-specific needs focus.
HEP is only one of many sciences with sharply increasing compute requirements that cannot be met by profiting from Moore's law alone. Commercial clouds potentially allow for realising larger economies scale. While some small-scale experience requiring dedicated effort has been collected, public cloud resources have not integrated yet the standard workflows science organisations in their private data centres; addition, European ramped up to significant scale yet. The HELIX NEBULA Science...
In many sciences the increasing amounts of data are reaching limit established handling and processing. With four large research centers German Helmholtz association Large Scale Data Management Analysis (LSDMA) project supports an initial set scientific projects, initiatives instruments to organize efficiently analyze amount produced in modern science. LSDMA bridges gap between production analysis using a novel approach by combining specific community support generic, cross development. Life...
Modern science is most often driven by data. Improvements in state-of-the-art technologies and methods many scientific disciplines lead not only to increasing data rates, but also the need improve or even completely overhaul their life cycle management.
We report the use of streaming data interfaces to perform fully online processing for serial crystallography experiments, without storing intermediate on disk. The system produces Bragg reflection intensity measurements suitable scaling and merging, with a latency less than 1 s per frame. Our uses CrystFEL software in combination ASAP::O framework. In series user experiments at PETRA III, frames from 16 megapixel Dectris EIGER2 X detector were searched peaks, indexed integrated maximum...
The EDDA experiment is designed to study p + excitation functions with high energy resolution and narrow step size in the kinetic range from 250 MeV 2500 at Cooler Synchrotron COSY. Measurements during accelertion phase conjunction internal targets will allow achieve a fast precise variation. Prototypes of detector elements fiber target have been extensively tested proton electron beams; performance trigger efficiency studied Monte Carlo simulations. In this contribution, results concerning...
For the upcoming experiments at European XFEL light source facility, a new online and offline data processing storage infrastructure is currently being built verified. Based on experience of system developed for Petra III DESY, presented last CHEP conference, we further develop to cope with much higher volumes rates ( 50GB/sec) together more complex analysis conditions (i.e. long range InfiniBand connections). This work will be carried out in collaboration DESY/IT, technology support from...
Over the past several years, rapid growth of data has affected many fields science. This often resulted in need for overhauling or exchanging tools and approaches disciplines' life cycles. However, this allows application new analysis methods facilitates improved sharing.
Data taking and analysis infrastructures in HEP (High Energy Physics) have evolved during many years to a well known problem domain. In contrast HEP, third generation synchrotron light sources, existing upcoming free electron lasers are confronted with an explosion data rates driven primarily by recent developments 2D pixel array detectors. The next of detectors will produce the region upwards 50 Gbytes per second. At synchrotrons, was traditionally taken away users following using portable...
We present results on different approaches mounted filesystems in use or under investigation at DESY. dCache, established since long as a storage system for physics data has implemented the NFS v4.1/pNFS protocol. New performance will be shown with most current version of dCache server. In addition to native usage filesystem LAN environment, are given WAN case. Several commercial vendors currently alpha beta phase adding protocol their appliances. test some these vendor solutions readiness...
DESY is one of the largest accelerator laboratories in Europe. It develops and operates state art accelerators for fundamental science areas high energy physics, photon development. While decades physics (HEP) has been most prominent user compute, storage network infrastructure, various scientific as with photons development have caught up are now dominating demands on infrastructure resources, significant consequences IT resource provisioning. In this contribution, we will present an...
A European consortium formed by science and industrial partners have started the EuroStore project to develop market a Hierarchical Storage Management System (HSM) together with high performance parallel file system (PFS). The aims design store. It will combine features of Manager provide capable meeting requirements most demanding applications in industry, commerce, science. few existing HSM products do not fully address all needs user community, and, some cases, represent major investment...