The Helmholtz-Zentrum Dresden-Rossendorf is a German research laboratory in Dresden and member of the Helmholtz Association of German Research Centres. Research is conducted in three of the Helmholtz Association's research areas: matter, health, and energy. While the research center was formerly known as Forschungszentrum Dresden-Rossendorf , the research site dates back as far as 1956, when the Zentralinstitut für Kernforschung in Eastern Germany was founded. Wikipedia.
Helmholtz Center Dresden | Date: 2016-08-05
The driver circuit comprises a first node (J1), which is connected to a first terminal of the Pockels cell (CP), a second node (J2), which is connected to a second terminal of the Pockels cell (CP), wherein the first node (J1) is connected to a first potential (+HV) via a first switching unit (S1) and the second node (J2) is connected to the first potential (+HV) via a second switching unit (S2) and wherein the first node (J1) is connected to a second potential (HV) via a first resistance (R1) and the second node (J2) is connected to the second potential (HV) via a second resistance (R2); and wherein the first node (J1) is connected to the second node (J2) via a series circuit comprising a third resistance (R3) and an inductance (L1).
Helmholtz Center Dresden | Date: 2017-01-11
The invention relates to a variable capacitance diode, to a method for producing same, and to a storage device and detector comprising such a variable capacitance diode, wherein the variable capacitance diode has a first and a second electrode and a layer arrangement arranged in contact-making fashion between the two electrodes, and wherein the layer arrangement has, one after the other in the direction from the first electrode towards the second electrode, a layer consisting of a ferroelectric material and an electrically insulating layer consisting of a dielectric material having electrically charged imperfections.
CSIC - Institute of Refrigeration, Slovak University of Technology in Bratislava and Helmholtz Center Dresden | Date: 2017-05-24
The present invention relates to a procedure for measuring a d.c. magnetic field by means of a cylindrical device formed by a magnetostrictive core. A d.c. magnetic field is applied and the mechanical deformation on the device caused by the magnetic field is measured and compared with the obtained measurements from previous calibrations to estimate magnetic field intensity values. The invention also relates to an apparatus for measuring a d.c. magnetic field by means of the indicated procedure. The apparatus comprises:- a cylindrical sensor element and an abutment/fixing element, such that the cylindrical sensor element experiences mechanical deformation when exposed to the d.c. magnetic field,- a deformation sensing device configured for detecting the mechanical deformation of the cylindrical sensor element, and- a processing unit configured for determining the intensity of the d.c. magnetic field based on the detected mechanical deformation of the cylindrical sensor element.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: NFRP-01-2014 | Award Amount: 13.89M | Year: 2015
The overall aim of the SOTERIA project is to improve the understanding of the ageing phenomena occurring in reactor pressure vessel (RPV) steels and in the internal steels (internals) in order to provide crucial information to regulators and operators to ensure safe long-term operation (LTO) of existing European nuclear power plants (NPPs). SOTERIA has set up a collaborative research consortium which gathers the main European research centres and industrial partners who will combine advanced modelling tools with the exploitation of experimental data to focus on four technical objectives: i) to carry out experiments aiming to explore flux and fluence effects on RPV and internals in pressurised water reactors, ii) to assess the residual lifetime of RPV taking into account metallurgical heterogeneities, iii) to assess the effect of the chemical and radiation environment on cracking in internals and iv) to develop modelling tools and provide a single platform integrating developed modelling tools and experimental data for reassessment of structural components during NPPs lifetime. Building on industry-specific key questions and material, SOTERIA will fill current gaps in safety assessment related to ageing phenomena, by providing a set of modelling tools directly applicable in an industrial environment. Guidelines for better use of modelling, material testing reactors and surveillance data will also be an output of paramount importance. Another important parallel objective is the education of the nuclear engineering and research community of SOTERIA results to improve and harmonise knowledge about NPPs ageing and thereby ensure a high impact of project results. The knowledge and tools generated in SOTERIA will contribute to improving EU nuclear safety policy, to increasing the leadership of the EU in safety related equipment and information and to contribute to improved NPP safety world-wide. The SOTERIA proposal received the NUGENIA label on 10 August 2014.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: NMBP-26-2016 | Award Amount: 7.49M | Year: 2017
The npSCOPE project aims at developing a new integrated instrument (the nanoparticle-scope) optimised for providing a complete physico-chemical characterisation of nanoparticles both in their pristine form or embedded in complex matrices such as biological tissues. Using sophisticated correlative data processing methodologies and algorithms based on statistical methods in conjunction with appropriate visualisation methods of the results, the npSCOPE instrument will allow rapid, accurate and reproducible measurements. The instrument will be based on the Gas Field Ion Source as a key enabling technology, which we will combine with a number of new developments in the field of electron and ion microscopy. We will progressively ramp up the TRL of the instrument and associated methodologies to reach TRL 7 by the end of the project. The new technology, and all related processes and methodologies, will be validated via round-robin studies performed independently by several partner institutions, crosschecked with conventional analysis technologies to demonstrate the advancements and capabilities of the npSCOPE technology and benchmarked in representative case studies. Given the low sample quantities needed and the strong potential of the instrument to generate high-quality physico-chemical data on nanomaterials, both ex situ and in situ, npSCOPE will allow a major step forward in defining key descriptors for read-across, grouping, in silico modelling and creating meaningful relationships with biological activity data for QSAR purposes. To reach these objectives, the project consortium will be composed of research centres internationally recognised for innovative instrument developments, well-established instrument manufacturers and experts in nanotoxicology in various fields of application to demonstrate and validate the applicability of npSCOPE for the risk assessment of nanomaterials in consumer products.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: SC5-13-2016-2017 | Award Amount: 4.87M | Year: 2016
Europe is faced with the challenge of sustaining a secure supply of by-product metals, which play a fundamental role in the competitiveness of the manufacturing sector and innovations in high-tech sectors. To loosen the growth restrictions imposed by the inflexible supply from primary mining, alternative sources for these metals must be explored. At the same time a wealth of metals is entrapped within the vast amounts of secondary resources still being landfilled or used in applications where their intrinsic value is not fully utilized. To unlock the potential of these resources, a radically new approach to metal recovery must be deployed. Crucial factor within this new value chain is the zero-waste approach, which captures not only the contained metals but also valorises the residual matrix (often >95% of the bulk material). Such an approach requires the development of innovative, highly selective metal recovery technologies that fully capture the metal-value without impairing the properties of the residual matrix material for valorisation. CHROMIC aims to develop such new recovery processes for critical (Cr, Nb) and economically valuable (Mo, V) by-product metals from secondary resources, based on the smart integration of enhanced pre-treatment, selective alkaline leaching and highly selective metal recovery across the value chain. An overarching assessment of the related economic, environmental and health and safety aspects will be carried out in an iterative way to ensure that the developed technologies meet the requirements of the circular economy whilst being in line with current market demand. The technology will be developed for two models streams (stainless steel slags and ferrochrome slags) with the potential of replication to numerous industrial residues across Europe. Involvement of society from early on will smooth the path towards implementation, so that the CHROMIC processes can contribute to securing Europes supply of critical raw materials.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: NFRP-09-2015 | Award Amount: 11.99M | Year: 2015
The Strategic Research Agenda of the EU Sustainable Nuclear Energy Technical platform requires new large infrastructures for its successful deployment. MYRRHA has been identified as a long term supporting research facility for all ESNII systems and as such put in the high-priority list of ESFRI. The goal of MYRTE is to perform the necessary research in order to demonstrate the feasibility of transmutation of high-level waste at industrial scale through the development of the MYRRHA research facility. Within MYRRHA as a large research facility, the demonstration of the technological performance of transmutation will be combined with the use for the production of radio-isotopes and as a material testing for nuclear fission and fusion applications. Numerical studies and experimental facilities are foreseen to reach this goal. Besides coordination, international collaboration and dissemination activities, the MYRTE proposal contains 5 technical work packages. The first and largest work-package is devoted to the realisation of the injector part of the MYRRHA accelerator to demonstrate the feasibility and required reliability of this non-semi-conducting part of the accelerator. The second work-package addresses the main outstanding technical issues in thermal hydraulics by numerical simulations and experimental validation. Pool thermal hydraulics and thermal hydraulics of the fuel assembly will be the focus of this WP. In the WP on LBE Chemistry, the evaporation from LBE, capture and deposition of Po and fission products will be studied in detail to complement the safety report. A small dedicated WP on experimental reactor physics is also foreseen to allow carrying out the necessary supplementary experiments at the GUINEVERE-facility to address the questions of the safety authorities. In a last WP, advanced studies on Americium-bearing oxide fuel are carried out to demonstrate the capability of developing minor actinide fuel for transmutation.
Agency: European Commission | Branch: H2020 | Program: MSCA-RISE | Phase: MSCA-RISE-2015 | Award Amount: 1.73M | Year: 2016
The Muon Campus at FNAL, USA, will host in the next few years two world class experiments dedicated to the search for signals of new physics. Muon g-2 will determine with unprecedented precision the anomalous magnetic moment of the muon while Mu2e will improve by four orders of magnitude the sensitivity on the search for the as-yet unobserved Charged Lepton Flavour Violating process of a neutrinoless conversion of a muon to an electron. European research institutions have a leading role in both detector development and construction and in the calibration and analysis of the data. The results from the FNAL experiments will complement those from similar CLFV searches being carried out in Europe and will produce very fruitful collaborations in this field. Through an involvement in both the US and the European programmes European institutes will be at the forefront of the search for evidence of new physics in the muon sector. The goal of this proposal is to establish new collaborations among European groups participating in the Muon Campus activities and to strengthen the already existing partnership with FNAL. State-of-the-art detectors will be designed, built, commissioned. The Mu2e crystal calorimeter will provide unprecedented timing performance for low energy electrons in the presence of a strong magnetic field exploiting solid state photosensors and the Mu2e high-purity germanium detector will record X-rays at rates and in radiation levels surpassing previous experiments. The Muon g-2 straw-tracking system will measure the muon beam profile with an accuracy in the vertical plane of better than 10 mrad and will efficiently identify pileup and lost-muon events. A laser monitor system will be a common effort of the two experiments, with the need for Muon g-2 to reach an accuracy at the sub-per mil level. The existing EU infrastructures for testing radiation hardness and characterizing the detector components will make the European contribution significantly stronger
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: ICT-25-2015 | Award Amount: 4.00M | Year: 2016
Billions of tiny computers that can sense and communicate from anywhere are coming online, creating the Internet of Things (IoT). As the IoT continues to expand, more and more devices need batteries and plugs. According to Gartner (www.gartner.com), there will be nearly 26 billion devices connected to the IoT by 2020. Therefore, together with improved batteries, advanced computation and communication must be delivered at extremely low-power consumption. It is well-known that Single Electron Transistors (SET) are extremely low-energy dissipation devices. CMOS and SETs are complementary: SET is the champion of low-power consumption while CMOS advantages like high-speed, driving etc. compensate exactly for SETs intrinsic drawbacks. Unrivalled integration with high performance is expected for hybrid SET-CMOS architectures.Manufacturability is the roadblock for large-scale use of hybrid SET-CMOS architectures. To assure room temperature (RT) operation, single dots of diameters below 5 nm have to be fabri-cated, exactly located between source and drain with tunnel distances of a few nm. A reliable CMOS compatible process of co-fabrication of RT-SETs and FETs is not yet available. IONS4SET will pave the way for fabrication of low-energy devices operating at RT using the discovery of a bottom-up self-assembly process. Lithography cannot deliver the feature sizes of 13 nm required for RT operation. IONS4SET will provide both, (i) controlled self-assembly of single ~ 2 nm Si dots and (ii) self-alignment of each nanodot with source and drain at tunneling distances of ~ 2 nm. The fabrication process of the Si nanodot involves (i) ion irradiation through a few tens of nm thin Si pillars with an embedded SiO2 layer and (ii) thermal activation of self-assembly. Dot self-assembly works for narrow pillars only, i.e. nanopillar fabrication is crucial for IONS4SET. Finally, a power saving hybrid SET/CMOS device with a vertical gate-all-around nanowire GAA-SET will be fabricated.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: FETOPEN-01-2016-2017 | Award Amount: 4.43M | Year: 2017
Current and future technological and societal demands require the transfer of vast amounts of data at speeds currently not available due to a lack of technology operating in the terahertz (THz) gap. TRANSPIRE will develop nano-scale THz-oscillators based on a new class of magnetic materials, which will function in this exact range and meet these demands. This will enable new functionalities with high societal impact, such as enabling remote hospitals, personal and substance security screening, medical spectrometry and imaging, geophysical and atmospheric research. Given the tuneability of their anisotropy, damping and magnetisation, newly discovered low-moment, ultra-high anisotropy field, highly spin-polarised ferrimagnets can enable terahertz technologies by exploiting magnetic resonance. Ferrimagnetic resonance will be excited by spin-transfer torque (STT) acting on the sub-lattice magnetisation, and detected via magnetoresistive effects. STT, so far only demonstrated in ferromagnetic systems, is the basis of all recent scalable magnetic random access memory designs. TRANSPIRE will optimize the materials, tuning their resonant properties and advancing the fundamental understanding of STT in two-sub-lattice systems. The breakthrough objective of a low-cost, compact, reliable, room-temperature terahertz technology has a huge potential, including on-chip and chip-to-chip data links. The natural outcome of the foundational work of TRANSPIRE will be to empower a number of high-potential actors to judge on the viability of spintronic terahertz technology and to be at the forefront of research, thus ensuring future industrial European leadership on the world stage. TRANSPIRE relies on coordinated interdisciplinary research in physics, chemistry, materials science, terahertz design and device engineering to ensure the success of this inherently high-risk endeavour, which can underpin the next wave of the Big Data revolution.