8 research outputs found
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Design of the Beam Delivery System for the International Linear Collider
Simulations of Higher Order Modes in the ACC39 Module of FLASH
This study is focused on the development of a HOMbased BPM system for the ACC39 module currently installed and in operation at FLASH. A similar system is anticipated to be installed at XFEL. Coupled inter-cavity modes are simulated together with a limited band of trapped modes. A suite of finite element computer codes (including HFSS and ACE3P) and globalised scattering matrix calculations (GSM) are used to investigate the modes in these cavities with a view to providing guidance on their use as a cavity beam diagnostic
Data Preservation in High Energy Physics
Data from high-energy physics experiments are collected with significant
financial and human effort and are mostly unique. However, until recently no
coherent strategy existed for data preservation and re-use, and many important
and complex data sets have simply been lost. While the current focus is on the
LHC at CERN, in the current period several important and unique experimental
programs at other facilities are coming to an end, including those at HERA,
b-factories and the Tevatron. To address this issue, an inter-experimental
study group on HEP data preservation and long-term analysis (DPHEP) was
convened at the end of 2008. The group now aims to publish a full and detailed
review of the present status of data preservation in high energy physics. This
contribution summarises the results of the DPHEP study group, describing the
challenges of data preservation in high energy physics and the group's first
conclusions and recommendations. The physics motivation for data preservation,
generic computing and preservation models, technological expectations and
governance aspects at local and international levels are examined.Comment: 8 pages, 6 figures, proceedings of ACAT 2011 poste
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Interaction-Region Design Options for a Linac-Ring LHeC
The interaction-region design for a linac-ring electron-proton collider based on the LHC ('LR-LHeC') poses numerous challenges related to collision scheme, synchrotron radiation, aperture, magnet technology, and optics. We report a first assessment and various options
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Boosted Objects: A Probe of Beyond the Standard Model Physics
We present the report of the hadronic working group of the BOOST2010 workshop held at the University of Oxford in June 2010. The first part contains a review of the potential of hadronic decays of highly boosted particles as an aid for discovery at the LHC and a discussion of the status of tools developed to meet the challenge of reconstructing and isolating these topologies. In the second part, we present new results comparing the performance of jet grooming techniques and top tagging algorithms on a common set of benchmark channels. We also study the sensitivity of jet substructure observables to the uncertainties in Monte Carlo predictions
SuperB: A High-Luminosity Asymmetric e+ e- Super Flavor Factory. Conceptual Design Report.
The physics objectives of SuperB, an asymmetric electron-positron collider with a luminosity above 10^36/cm^2/s are described, together with the conceptual design of a novel low emittance design that achieves this performance with wallplug power comparable to that of the current B Factories, and an upgraded detector capable of doing the physics in the SuperB environment
A comparison of measured jet cross sections with QCD calculations for e"+e"- annihilation
SIGLECopy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman
Measurement and analysis of the reaction #gamma##gamma##->#3#pi#"+3#pi#"-
SIGLETIB: RA 2999(91-003) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman