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they are not comprehensive nor are they the most current set.
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1

Accelerated Iterative Method for Solving Steady Solutions of Linearized Atmospheric Models  

E-Print Network (OSTI)

Accelerated Iterative Method for Solving Steady Solutions of Linearized Atmospheric Models Masahiro approach, referred to as the accelerated iterative method (AIM), is developed for solving steady state, respectively. For ensuring the accelerated asymptotic convergence of iterative procedure

Watanabe, Masahiro

2

Iterative solution of ordinary differential equations with polynomial coefficients  

E-Print Network (OSTI)

ITERATIVE SOLUTION OF ORDINARY DIFFERENTIAL EQUATIONS WITH POLYNOMIAL COEFFICIENTS A Thesis By JIMMIE CHARLES RHEA FOREHAND Submitted to the Graduate College of the Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1965 Major Subject Mathematics FAMILIES OF FIFTH ORDER RUNGE-KUTTA FORMULAS A Thesis By HARRY PAUL KONEN 4 0 0 IXI v 0 Approved as to style and content by: (Chairman of Committee) (Head of Departmen...

Forehand, Jimmie Charles Rhea

1965-01-01T23:59:59.000Z

3

Volkov solution for two laser beams and ITER  

E-Print Network (OSTI)

We find the solution of the Dirac equation for two plane waves (laser beams) and we determine the modified Compton formula for the scattering of two photons on an alectron. The practical meaning of the two laser beams is, that two laser beams impinging on a targed which is constituted from material in the form of a foam, can replace 100-200 laser beams impinging on a normal targed. It means that the nuclear fusion with two laser beams is realistic in combination with the nuclear reactor such as ITER.

Miroslav Pardy

2005-07-12T23:59:59.000Z

4

Implementation of an iterative technique for a solution of the Thomas-Fermi equation  

E-Print Network (OSTI)

IMPLEMENTATION OF AN ITERATIVE TECHNIQUE FOR A SOLUTION OF THE THOMAS-FERMI EQUATION A Thesis by RAYMOND CALVERT FLAGG Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE August 1978 Major Subject: Mathematics IMPLEMENTATION OF AN ITERATIVE TECHNIQUE FOR A SOLUTION OF THE THOMAS-FERMI EQUATION A Thesis by RAYMOND CALVERT FLAGG Approved as to sryle and content by: (Chairman of Committeeee ( ead...

Flagg, Raymond Calvert

2012-06-07T23:59:59.000Z

5

ITER  

SciTech Connect

This year six international partners have signed up to construct the first burning plasma experiment -- ITER -- in the South of France.It is over 50 years since the beginning of national programs to produce controlled fusion energy. The challenge of fusion energy has proven harder than was first anticipated. In this Colloquium Steve Cowley from UCLA will explain the scientific issues and how the difficulties have been overcome.

Cowley, Steve

2005-10-10T23:59:59.000Z

6

Integrating Variable Renewable Energy: Challenges and Solutions  

NLE Websites -- All DOE Office Websites (Extended Search)

Integrating Variable Renewable Energy: Challenges and Solutions L. Bird, M. Milligan, and D. Lew National Renewable Energy Laboratory Technical Report NRELTP-6A20-60451 September...

7

Integrated modelling of steady-state scenarios and heating and current drive mixes for ITER  

Science Journals Connector (OSTI)

Recent progress on ITER steady-state (SS) scenario modelling by the ITPA-IOS group is reviewed. Code-to-code benchmarks as the IOS group's common activities for the two SS scenarios (weak shear scenario and internal transport barrier scenario) are discussed in terms of transport, kinetic profiles, and heating and current drive (CD) sources using various transport codes. Weak magnetic shear scenarios integrate the plasma core and edge by combining a theory-based transport model (GLF23) with scaled experimental boundary profiles. The edge profiles (at normalized radius ? = 0.8–1.0) are adopted from an edge-localized mode-averaged analysis of a DIII-D ITER demonstration discharge. A fully noninductive SS scenario is achieved with fusion gain Q = 4.3, noninductive fraction fNI = 100%, bootstrap current fraction fBS = 63% and normalized beta ?N = 2.7 at plasma current Ip = 8?MA and toroidal field BT = 5.3?T using ITER day-1 heating and CD capability. Substantial uncertainties come from outside the radius of setting the boundary conditions (? = 0.8). The present simulation assumed that ?N (?) at the top of the pedestal (? = 0.91) is about 25% above the peeling–ballooning threshold. ITER will have a challenge to achieve the boundary, considering different operating conditions (Te/Ti ? 1 and density peaking). Overall, the experimentally scaled edge is an optimistic side of the prediction. A number of SS scenarios with different heating and CD mixes in a wide range of conditions were explored by exploiting the weak-shear steady-state solution procedure with the GLF23 transport model and the scaled experimental edge. The results are also presented in the operation space for DT neutron power versus stationary burn pulse duration with assumed poloidal flux availability at the beginning of stationary burn, indicating that the long pulse operation goal (3000?s) at Ip = 9?MA is possible. Source calculations in these simulations have been revised for electron cyclotron current drive including parallel momentum conservation effects and for neutral beam current drive with finite orbit and magnetic pitch effects.

M. Murakami; J.M. Park; G. Giruzzi; J. Garcia; P. Bonoli; R.V. Budny; E.J. Doyle; A. Fukuyama; N. Hayashi; M. Honda; A. Hubbard; S. Ide; F. Imbeaux; E.F. Jaeger; T.C. Luce; Y.-S. Na; T. Oikawa; T.H. Osborne; V. Parail; A. Polevoi; R. Prater; A.C.C. Sips; J. Snipes; H.E. St. John; P.B. Snyder; I. Voitsekhovitch; ITPA/Integrated Operation Scenario Group

2011-01-01T23:59:59.000Z

8

iterative solution of augmented systems arising in interior methods  

E-Print Network (OSTI)

A)v1 = r1 ? ATD. ?1 r2, v2 = D. ?1. (r2 ? Av1), (1.6c). (see Section 3). This allows us to compute the solution of (1.6a) by solving either. (1.6b) or (1.6c) (the ...

2005-09-04T23:59:59.000Z

9

Nested (inverse) binomial sums and new iterated integrals for massive Feynman diagrams  

E-Print Network (OSTI)

Nested sums containing binomial coefficients occur in the computation of massive operator matrix elements. Their associated iterated integrals lead to alphabets including radicals, for which we determined a suitable basis. We discuss algorithms for converting between sum and integral representations, mainly relying on the Mellin transform. To aid the conversion we worked out dedicated rewrite rules, based on which also some general patterns emerging in the process can be obtained.

Jakob Ablinger; Johannes Blümlein; Clemens G. Raab; Carsten Schneider

2014-07-17T23:59:59.000Z

10

Integrated Energy Solutions LLC | Open Energy Information  

Open Energy Info (EERE)

Integrated Energy Solutions LLC Integrated Energy Solutions LLC Jump to: navigation, search Logo: Integrated Energy Solutions LLC Name Integrated Energy Solutions LLC Address 11900 College Blvd, Ste 210 Place Overland Park, Kansas Zip 66210-3939 Product Bio-Coal TM Technology Year founded 2009 Number of employees 1-10 Phone number +1 913 231 2942 Website http://www.inensol.com Coordinates 38.928082°, -94.7242° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.928082,"lon":-94.7242,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

11

Integrating Variable Renewable Energy: Challenges and Solutions  

SciTech Connect

In the U.S., a number of utilities are adopting higher penetrations of renewables, driven in part by state policies. While power systems have been designed to handle the variable nature of loads, the additional supply-side variability and uncertainty can pose new challenges for utilities and system operators. However, a variety of operational and technical solutions exist to help integrate higher penetrations of wind and solar generation. This paper explores renewable energy integration challenges and mitigation strategies that have been implemented in the U.S. and internationally, including forecasting, demand response, flexible generation, larger balancing areas or balancing area cooperation, and operational practices such as fast scheduling and dispatch.

Bird, L.; Milligan, M.; Lew, D.

2013-09-01T23:59:59.000Z

12

Safety Science & Solutions Integrating Human Factors in Healthcare  

E-Print Network (OSTI)

Safety Science & Solutions Integrating Human Factors in Healthcare Tuesday 2nd December 2014 safety, quality and productivity in healthcare. Showcasing enduring solutions to patient safety recognised speakers in patient safety including: Martin Bromiley, Founder, Clinical Human Factors Group Dr

Levi, Ran

13

Approximate solutions of a time-fractional diffusion equation with a source term using the variational iteration method  

E-Print Network (OSTI)

We consider a time fractional differential equation of order $\\alpha$, $0 0, t > 0, \\quad c(x,0)=f(x). $$ where ${}^C_0\\mathcal{D}_t^{\\alpha}$ is the Caputo fractional derivative of order $\\alpha$, $A$ is a linear differential operator, $q(x,t)$ is a source term, and $f(x)$ is the inital condition. Approximate (truncated) series solutions are obtained by means of the Variational Iteration Method (VIM). We find the series solutions for different cases of the source term, in a form that is readily implementable on the computer where symbolic computation platform is available. The error in truncated solution $c_n$ diminishes exponentially fast for a given $\\alpha$ as the number of terms in the series increases. VIM has several advantages over other methods that produce solutions in the series form. The truncated VIM solutions often converge rapidly requiring only a few terms for fast and accurate approximations.

Iftikhar Ali; Bilal Chanane; Nadeem A. Malik

2014-07-31T23:59:59.000Z

14

The IBM Health Integration Framework: Accelerating solutions for smarter healthcare  

E-Print Network (OSTI)

in improving health- care access, cost, quality of care and patient satisfaction. But progress can take many Integration Framework is a unified software platform for implementing comprehensive solutions for health- careThe IBM Health Integration Framework: Accelerating solutions for smarter healthcare Healthcare

15

Modified Chebyshev-Picard Iteration Methods for Solution of Initial Value and Boundary Value Problems  

E-Print Network (OSTI)

of y (final value problem) . . . . . . . . . . . . . . 68 32 Integration errors of y? (final value problem) . . . . . . . . . . . . . . 69 33 Integration errors of y (y(-1) and y(1)) are known) . . . . . . . . . . 72 34 Integration errors of y? (y(-1...) and y(1) are known) . . . . . . . . . . . 72 35 Integration errors of y (y?(?1) and y?(1) are known) . . . . . . . . . . 73 36 Integration errors of y? (y?(?1) and y?(1) are known) . . . . . . . . . . 74 37 Integration errors of y (y(-1) and yd(1...

Bai, Xiaoli

2011-10-21T23:59:59.000Z

16

CIB White Paper on IDDS Integrated Design & Delivery Solutions  

E-Print Network (OSTI)

CIB White Paper on IDDS Integrated Design & Delivery Solutions Publication 328 ISBN 978-90-6363-060-7 #12;CIB White Paper on IDDS Page 1 of 15 CIB White Paper on IDDS Integrated Design & Delivery White Paper on IDDS Page 2 of 15 Table of Contents Introduction and Use of this White Paper

Amor, Robert

17

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Integrated Integrated Dynamic Electron Solutions, Inc. America's Next Top Energy Innovator Challenge 333 likes Integrated Dynamic Electron Solutions, Inc. Lawrence Livermore National Laboratory Dynamic Transmission Electron Microscopes DTEM reveal unprecedented details of the mechanisms underlying a host of nanoscale systems that are at the core of our current and future energy economy. A vast and growing number of materials utilized in the energy sector rely on nanostructured materials and their unique dynamic behaviors. DTEM offers researchers the ability to directly interrogate these materials at time and length scales that to-date have either been impossible to access or required the use of multi-billion dollar synchrotrons. DTEM will fundamentally change the approach to basic and applied research in the

18

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Integrated Integrated Dynamic Electron Solutions, Inc. America's Next Top Energy Innovator Challenge 333 likes Integrated Dynamic Electron Solutions, Inc. Lawrence Livermore National Laboratory Dynamic Transmission Electron Microscopes DTEM reveal unprecedented details of the mechanisms underlying a host of nanoscale systems that are at the core of our current and future energy economy. A vast and growing number of materials utilized in the energy sector rely on nanostructured materials and their unique dynamic behaviors. DTEM offers researchers the ability to directly interrogate these materials at time and length scales that to-date have either been impossible to access or required the use of multi-billion dollar synchrotrons. DTEM will fundamentally change the approach to basic and applied research in the

19

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Integrated Integrated Dynamic Electron Solutions, Inc. America's Next Top Energy Innovator Challenge 333 likes Integrated Dynamic Electron Solutions, Inc. Lawrence Livermore National Laboratory Dynamic Transmission Electron Microscopes DTEM reveal unprecedented details of the mechanisms underlying a host of nanoscale systems that are at the core of our current and future energy economy. A vast and growing number of materials utilized in the energy sector rely on nanostructured materials and their unique dynamic behaviors. DTEM offers researchers the ability to directly interrogate these materials at time and length scales that to-date have either been impossible to access or required the use of multi-billion dollar synchrotrons. DTEM will fundamentally change the approach to basic and applied research in the

20

Total integrals of global solutions to Painleve II  

E-Print Network (OSTI)

We evaluate the total integral from negative infinity to positive infinity of all global solutions to the Painleve II equation on the real line. The method is based on the interplay between one of the equations of the associated Lax pair and the corresponding Riemann-Hilbert problem. In addition, we evaluate the total integral of a function related to a special solution to the Painleve V equation. As a corollary, we obtain short proofs of the computation of the constant terms of the limiting gap probabilities in the edge and the bulk of the Gaussian Orthogonal and Gaussian Symplectic Ensembles that were obtained recently in [4] and [18]. We also evaluate the total integrals of certain polynomials of the Painleve functions and their derivatives. These polynomials are the densities of the first integrals of the modified Korteweg-de Vries equation. We discuss the relations of the formulae we have obtained to the classical trace formulae for the Dirac operator on the line.

Jinho Baik; Robert Buckingham; Jeffery DiFranco; Alexander Its

2008-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

US ITER | Jobs  

NLE Websites -- All DOE Office Websites (Extended Search)

Postings Careers in Fusion Science ITER Jobs Home > Jobs > US ITER Positions US ITER Positions US...

22

QUIZ 7 Problem 1. Integrate ? dx (1 - x Solution. We have an ...  

E-Print Network (OSTI)

QUIZ 7. NICK MILLER. Problem 1. Integrate. ? dx. (1 - x2)5/2. Solution. We have an integral with a. / a2 - x2 in it so immediately we want to make the substitution ...

2012-02-14T23:59:59.000Z

23

Numerical solution of linear Fredholm fuzzy integral equations of the second kind by Adomian method  

Science Journals Connector (OSTI)

Using parametric form of fuzzy numbers we convert a linear fuzzy Fredholm integral equation of the second kind to a linear system of integral equations of the second kind in crisp case. We use Adomian method and find the approximate solution of this ... Keywords: Adomian method, Fuzzy integral equations, System of linear Fredholm integral equations of the second kind

E. Babolian, H.Sadeghi Goghary, S. Abbasbandy

2005-02-01T23:59:59.000Z

24

A domain decomposition method of stochastic PDEs: An iterative solution techniques using a two-level scalable preconditioner  

SciTech Connect

Recent advances in high performance computing systems and sensing technologies motivate computational simulations with extremely high resolution models with capabilities to quantify uncertainties for credible numerical predictions. A two-level domain decomposition method is reported in this investigation to devise a linear solver for the large-scale system in the Galerkin spectral stochastic finite element method (SSFEM). In particular, a two-level scalable preconditioner is introduced in order to iteratively solve the large-scale linear system in the intrusive SSFEM using an iterative substructuring based domain decomposition solver. The implementation of the algorithm involves solving a local problem on each subdomain that constructs the local part of the preconditioner and a coarse problem that propagates information globally among the subdomains. The numerical and parallel scalabilities of the two-level preconditioner are contrasted with the previously developed one-level preconditioner for two-dimensional flow through porous media and elasticity problems with spatially varying non-Gaussian material properties. A distributed implementation of the parallel algorithm is carried out using MPI and PETSc parallel libraries. The scalabilities of the algorithm are investigated in a Linux cluster.

Subber, Waad, E-mail: wsubber@connect.carleton.ca; Sarkar, Abhijit, E-mail: abhijit_sarkar@carleton.ca

2014-01-15T23:59:59.000Z

25

A Holistic Solution for Duplicate Entity Identification in Deep Web Data Integration  

E-Print Network (OSTI)

A Holistic Solution for Duplicate Entity Identification in Deep Web Data Integration Wei Liu 1 in deep Web data integration, the goal of duplicate entity identification is to discover the duplicate to deep Web data integration systems. That is, one duplicate entity matcher trained over two specific Web

26

US ITER | Jobs  

NLE Websites -- All DOE Office Websites (Extended Search)

Postings Careers in Fusion Science ITER Jobs Home > Jobs > International Job Postings International ITER Postions International...

27

Geometric integration: numerical solution of differential equations on manifolds  

Science Journals Connector (OSTI)

...such as rigid bodies and the Solar System. Conserved quantities...long-term integration of the solar system by Wisdom & Holman...investigate the stability of the solar system, it was essential to...manifold invariant is greatly assisted when M is a homogeneous manifold...

1999-01-01T23:59:59.000Z

28

Integrated solutions for hydrologic investigations in arid lands  

Science Journals Connector (OSTI)

...integrate additional renewable groundwater resources...Desert [ED] of Egypt, the Sinai Peninsula...Geological map of Egypt, Appendix 1 (1...International Atomic Energy Agency) and WISER...use of alternative renewable groundwater resources...Eastern Desert of Egypt, 2nd International...

Doris Becker; Mohamed Sultan; Adam Milewski; Richard Becker; William Sauck; Farouk Soliman; Mohamed Rashed; Mohamed Ahmed; Eugene Yan; Ahmad Wagdy; Kyle Chouinard; Benjamin Welton

29

Policy Iteration / Optimistic Policy Iteration Least-Squares Policy Iteration Experiments Least Squares Policy Iteration  

E-Print Network (OSTI)

Policy Iteration / Optimistic Policy Iteration Least-Squares Policy Iteration Experiments Least Squares Policy Iteration Bias-Variance Trade-o in Control Problems Christophe Thiéry and Bruno Scherrer/27 #12; Policy Iteration / Optimistic Policy Iteration Least-Squares Policy Iteration Experiments Markov

Scherrer, Bruno

30

Numerical solutions to integral equations of the Fredholm type  

E-Print Network (OSTI)

N K(? y) = F hn(x)gn(y) n~l A linear integral equation of the second kind is an in- tegral equation of the form b d(x) = f(x) & 1 j K(x, y)4(y)dy a where f is an arbitrary function, and a, b, and are parameters. This thesis will discuss linear... integrable function, a, b, and 1 are parameters, and the kernel is separable. That is, N K(x, y) = Z h (x)gn(y) n 1 (2. 2) Substitution of equation (2. 2) into equation (2. 1) yields b N gl(x) = f(x) + 1 j Z h (x)g (y)$(y)dy a n=l or, since...

Pullin, John Henry

2012-06-07T23:59:59.000Z

31

Integrated PEV Charging Solutions and Reduced Energy for Occupant Comfort (Brochure), Vehicle Testing and Integration Facility (VTIF)  

NLE Websites -- All DOE Office Websites (Extended Search)

Vehicle Testing and Integration Facility Vehicle Testing and Integration Facility Integrated PEV Charging Solutions and Reduced Energy for Occupant Comfort Plug-in electric vehicles (PEVs) offer the opportunity to shift transportation energy demands from petroleum to electricity, but broad adoption will require integration with other systems. While automotive experts work to reduce the cost of PEVs, fossil- fueled cars and trucks continue to burn hundreds of billions of gallons of petroleum each year-not only to get from point A to point B, but also to keep passengers comfortable with air condi- tioning and heat. At the National Renewable Energy Laboratory (NREL), three instal- lations form a research laboratory known as the Vehicle Testing and Integration Facility (VTIF). At the VTIF, engineers are develop-

32

US ITER | Media Corner  

NLE Websites -- All DOE Office Websites (Extended Search)

US ITER College Student Models, Simulates and Designs a Cooling Subsystem for the ITER Tokamak -Agatha Bardoel Published June 24, 2011 US ITER Project Manger Ned Sauthoff and ITER...

33

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Element One, Inc. Element One, Inc. National Renewable Energy Laboratory 191524 likes Element One, based in Boulder, Colorado, has created the only available coatings that change color when detecting hydrogen and other hazardous gas leaks, either reversibly or non-reversibly, to provide both current and historical information about leaks. Element One's patented gas indicators and sensors use catalyzed thin films or nanoparticles of a transition metal oxide to create very low cost sensors for use in industrial and consumer environments, greatly reducing the potential for undetected leaks and their cost and safety implications. This technology is also being integrated for use in refineries, industry gas and fuel cells systems and was developed using technology from the National Renewable Energy Laboratory.

34

STATEMENT OF CONSIDERATIONS REQUEST BY GED INTEGRATED SOLUTIONS FOR AN ADVANCE WAIVER  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

GED INTEGRATED SOLUTIONS FOR AN ADVANCE WAIVER GED INTEGRATED SOLUTIONS FOR AN ADVANCE WAIVER OF PATENT RIGHTS TO INVENTIONS MADE UNDER COOPERATIVE AGREEMENT DE-EE000167; W(A)-09-050 ; CH-1513 GED Integrated Solutions requests an advance waiver of domestic and foreign patent rights for all subject inventions made un'der the referenced cooperative agreement. The purpose of the cooperative agreement is to design, develop, and commercialize a high volume, low material, and low labor cost lnsulating Glass Automation Manufacturing System (IGAMS) for production of reliable highly insulating windows. The work includes: the development andlor selection of highly insulating windows in various configurations; production engineering and tolling design; and, commercialization strategies to maximize market acceptance and penetration. PPG

35

US ITER | Jobs  

NLE Websites -- All DOE Office Websites (Extended Search)

BUSINESS WITH US ITER | MEDIA CORNER | JOBS | CONTACT US US Job Postings International Job Postings Careers in Fusion Science ITER Jobs Home > US ITER Jobs Be a Part of...

36

US ITER | Doing Business  

NLE Websites -- All DOE Office Websites (Extended Search)

US ITER > Business Opportunties > For Vendors > Tokamak Cooling Water System Opportunities Tokamak Cooling Water System (TCWS) Opportunities US ITER has contracted with AREVA...

37

US ITER | About  

NLE Websites -- All DOE Office Websites (Extended Search)

potential to leak radioactive cooling water to the environment by eliminating roof-top heat exchangers. News ITER Organization: Procurement Day for the ITER Tokamak Cooling...

38

US ITER | Media Corner  

NLE Websites -- All DOE Office Websites (Extended Search)

ITER preps for high performance plasma heating US ITER preps for high performance plasma heating New test results and innovations advance ion cyclotron high power transmission...

39

To learn more about AT&T Network Integration Solutions, visit www.att.com/network-integration or have us contact you.  

E-Print Network (OSTI)

/ ITP Transformation services Help desk / User support Transformation support Multi-carrier solutions designed to help customers connect and integrate best-of-breed service offerings and capabilities and manage the process of service and capabilities integration. With the benefit of a well-established Iaa

Fisher, Kathleen

40

US ITER | Jobs  

NLE Websites -- All DOE Office Websites (Extended Search)

Postings Careers in Fusion Science ITER Jobs Home > Jobs > Careers in Fusion Science Learn More About Working at US ITER and Careers in Fusion Science Jan Berry Takes a Different...

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

US ITER | Media Corner  

NLE Websites -- All DOE Office Websites (Extended Search)

test bed ring will load ITER transmission lines with up to 6 megawatts New test bed ring will load ITER transmission lines with up to 6 megawatts -Agatha Bardoel Published April...

42

US ITER | Media Corner  

NLE Websites -- All DOE Office Websites (Extended Search)

Theoretical physicist and 2007-2009 Chairman of the Council of ITER, Chris Llewellyn Smith, contextualizes the urgency of the ITER project in an energy market that could see the...

43

PCG reference manual: A package for the iterative solution of large sparse linear systems on parallel computers. Version 1.0  

SciTech Connect

PCG (Preconditioned Conjugate Gradient package) is a system for solving linear equations of the form Au = b, for A a given matrix and b and u vectors. PCG, employing various gradient-type iterative methods coupled with preconditioners, is designed for general linear systems, with emphasis on sparse systems such as these arising from discretization of partial differential equations arising from physical applications. It can be used to solve linear equations efficiently on parallel computer architectures. Much of the code is reusable across architectures and the package is portable across different systems; the machines that are currently supported is listed. This manual is intended to be the general-purpose reference describing all features of the package accessible to the user; suggestions are also given regarding which methods to use for a given problem.

Joubert, W.D. [Los Alamos National Lab., NM (United States); Carey, G.F.; Kohli, H.; Lorber, A.; McLay, R.T.; Shen, Y. [Texas Univ., Austin, TX (United States); Berner, N.A. [Texas Univ., Austin, TX (United States)]|[Los Alamos National Lab., NM (United States); Kalhan, A. [Los Alamos National Lab., NM (United States)]|[Tennessee Univ., Knoxville, TN (United States)

1995-01-01T23:59:59.000Z

44

Nested off-diagonal Bethe ansatz and exact solutions of the su(n) spin chain with generic integrable boundaries  

E-Print Network (OSTI)

The nested off-diagonal Bethe ansatz method is proposed to diagonalize multi-component integrable models with generic integrable boundaries. As an example, the exact solutions of the su(n)-invariant spin chain model with both periodic and non-diagonal boundaries are derived by constructing the nested T-Q relations based on the operator product identities among the fused transfer matrices and the asymptotic behavior of the transfer matrices.

Junpeng Cao; Wen-Li Yang; Kangjie Shi; Yupeng Wang

2014-05-11T23:59:59.000Z

45

US ITER | Media Corner  

NLE Websites -- All DOE Office Websites (Extended Search)

May Diagnose Fusion Energy Reactors Scientific Computing, September 19, 2009 Nuclear fusion power project to start in 2018: Official PhysOrg.com, June 18, 2009 ITER Council...

46

US ITER | Media Corner  

NLE Websites -- All DOE Office Websites (Extended Search)

Bush Issues Executive Order Designating ITER International Fusion Energy Organization A Public International Organization November 19, 2007 The perfect fuel: New Hampshire...

47

US ITER | Jobs  

NLE Websites -- All DOE Office Websites (Extended Search)

Frank Casella US ITER Quality Assurance, Environmental, Safety and Health and Licensing Support Manager Tell us about your background Frank Casella Frank Casella I was born in...

48

US ITER | Media Corner  

NLE Websites -- All DOE Office Websites (Extended Search)

delivery components for ITER advances Delivery of tokamak cooling water system drain tanks will begin in 2014 -Katie Elyce Jones Published August 19, 2013 Vacuum Pressure...

49

US ITER | Contact Us  

NLE Websites -- All DOE Office Websites (Extended Search)

ITER International Department of Energy Office of Science Oak Ridge National Laboratory Princeton Plasma Physics Laboratory Savannah River National Laboratory Last updated: 0521...

50

US ITER | Doing Business  

NLE Websites -- All DOE Office Websites (Extended Search)

ITER International Department of Energy Office of Science Oak Ridge National Laboratory Princeton Plasma Physics Laboratory Savannah River National Laboratory Last updated:...

51

US ITER | Contact Us  

NLE Websites -- All DOE Office Websites (Extended Search)

ITER International Department of Energy Office of Science Oak Ridge National Laboratory Princeton Plasma Physics Laboratory Savannah River National Laboratory Last updated: 0327...

52

US ITER | Media Corner  

NLE Websites -- All DOE Office Websites (Extended Search)

the Around the World of Fusion (Link to complete list.) Fusion Energy Production by Neutral Particle Injection This visualization demonstrates how the ITER reactor will create a...

53

US ITER | About  

NLE Websites -- All DOE Office Websites (Extended Search)

Ion Cyclotron Heating Transmission Lines Ion Cyclotron Heating Transmission Lines (WBS 1.5.1) Fact Sheet ICH Image Highlighted in pink: ITER Ion Cyclotron Heating Transmission...

54

US ITER | About  

NLE Websites -- All DOE Office Websites (Extended Search)

Systems EC Transmission Lines Electrical Network Exhaust IC Transmission Lines Magnet Pellet Injection Vacuum US Hardware Home > About US ITER > US Hardware US Hardware...

55

US ITER | About  

NLE Websites -- All DOE Office Websites (Extended Search)

Electron Cyclotron Heating Transmission Lines Electron Cyclotron Heating Transmission Lines (WBS 1.5.2) Fact Sheet Electron Cyclotron Heating System Image Highlighted in pink: ITER...

56

Iterated maps for clarinet-like systems  

E-Print Network (OSTI)

The dynamical equations of clarinet-like systems are known to be reducible to a non-linear iterated map within reasonable approximations. This leads to time oscillations that are represented by square signals, analogous to the Raman regime for string instruments. In this article, we study in more detail the properties of the corresponding non-linear iterations, with emphasis on the geometrical constructions that can be used to classify the various solutions (for instance with or without reed beating) as well as on the periodicity windows that occur within the chaotic region. In particular, we find a regime where period tripling occurs and examine the conditions for intermittency. We also show that, while the direct observation of the iteration function does not reveal much on the oscillation regime of the instrument, the graph of the high order iterates directly gives visible information on the oscillation regime (characterization of the number of period doubligs, chaotic behaviour, etc.).

Pierre-André Taillard; Jean Kergomard; Franck Laloë

2010-05-31T23:59:59.000Z

57

A new transform method I: domain-dependent fundamental solutions and integral representations  

Science Journals Connector (OSTI)

...the fact that the fundamental solution for the Poisson equation, , does not decay at infinity...non-periodic fundamental solution, E s...recall that there does not exist a radial...non-periodic fundamental solution was first...

2010-01-01T23:59:59.000Z

58

Photo: US ITER/ORNL INSIDE: ITER Site Progress  

NLE Websites -- All DOE Office Websites (Extended Search)

gears and top of the twin-screw extruder mechanism of the prototype developed for ITER. Photo: US ITERORNL INSIDE: ITER Site Progress View from DOE US Systems Update ITER Magazine...

59

ITER | Princeton Plasma Physics Lab  

NLE Websites -- All DOE Office Websites (Extended Search)

ITER http:mediacentral.princeton.eduid04m7zh6z3 What is ITER? ITER is a large international fusion experiment aimed at demonstrating the scientific and technological...

60

US ITER | Media Corner  

NLE Websites -- All DOE Office Websites (Extended Search)

one of the world's largest and most powerful electromagnets to energize the ITER tokamak, a device that confines plasma in the shape of a doughnut. The 13 meter tall central...

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

US ITER | About  

NLE Websites -- All DOE Office Websites (Extended Search)

Tokamak Exhaust Processing Systems Tokamak Exhaust Processing System (WBS 1.3.2) FactSheet Exhaust Process Image The ITER tokamak exhaust process design. The US is responsible for...

62

Overview of ITER safety  

SciTech Connect

This paper presents an overview of safety in the International Thermonuclear Experimental Reactor (ITER) project midway through the Engineering Design Activities (EDA). We describe the safety strategy and approach used by the project. Then, we present project radiological release limits with the methodology used to determine if these release limits are met. We review the major safety functions and their implementation for ITER, previous results, and plans for upcoming safety and environmental analyses. 16 refs., 2 figs., 3 tabs.

Petti, D.A. [Idaho National Engineering Lab., Idaho Falls, ID (United States); Piet, S.J. [ITER San Diego Joint Work Site, La Jolla, CA (United States)

1996-12-31T23:59:59.000Z

63

Is Integrated Gasification Combined Cycle with Carbon Capture-Storage the Solution for Conventional Coal Power Plants  

E-Print Network (OSTI)

Engineering Management Field Project Is Integrated Gasification Combined Cycle with Carbon Capture-Storage the Solution for Conventional Coal Power Plants By Manish Kundi Fall Semester, 2011 An EMGT Field Project report... 2.4 Environmental Aspects-Emissions 23 3.0 Procedure & Methodology 3.1 Working technology – Conventional Coal Plants 30 3.2 Working technology – IGCC Power Plants 32 3.3 Carbon Capture and Storage 35 3...

Kundi, Manish

2011-12-16T23:59:59.000Z

64

E-Print Network 3.0 - asynchronous parallel iterative Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

the analysis ofconvergence of asynchronous iterations for parallel solution of linear systems of algebraic... of the asynchronous ... Source: Szyld, Daniel B. - Department of...

65

Sensitivity and uncertainty analyses applied to one-dimensional radionuclide transport in a layered fractured rock: MULTFRAC --Analytic solutions and local sensitivities; Phase 2, Iterative performance assessment: Volume 1  

SciTech Connect

Exact analytical solutions based on the Laplace transforms are derived for describing the one-dimensional space-time-dependent, advective transport of a decaying species in a layered, saturated rock system intersected by a planar fracture of varying aperture. These solutions, which account for advection in fracture, molecular diffusion into the rock matrix, adsorption in both fracture and matrix, and radioactive decay, predict the concentrations in both fracture and rock matrix and the cumulative mass in the fracture. The solute migration domain in both fracture and rock is assumed to be semi-infinite with non-zero initial conditions. The concentration of each nuclide at the source is allowed to decay either continuously or according to some periodical fluctuations where both are subjected to either a step or band release mode. Two numerical examples related to the transport of Np-237 and Cm-245 in a five-layered system of fractured rock were used to verify these solutions with several well established evaluation methods of Laplace inversion integrals in the real and complex domain. In addition, with respect to the model parameters, a comparison of the analytically derived local sensitivities for the concentration and cumulative mass of Np-237 in the fracture with the ones obtained through a finite-difference method of approximation is also reported.

Gureghian, A.B.; Wu, Y.T.; Sagar, B. [Southwest Research Inst., San Antonio, TX (United States). Center for Nuclear Waste Regulatory Analyses; Codell, R.A. [Nuclear Regulatory Commission, Washington, DC (United States)

1992-12-01T23:59:59.000Z

66

Iterated multidimensional wave conversion  

SciTech Connect

Mode conversion can occur repeatedly in a two-dimensional cavity (e.g., the poloidal cross section of an axisymmetric tokamak). We report on two novel concepts that allow for a complete and global visualization of the ray evolution under iterated conversions. First, iterated conversion is discussed in terms of ray-induced maps from the two-dimensional conversion surface to itself (which can be visualized in terms of three-dimensional rooms). Second, the two-dimensional conversion surface is shown to possess a symplectic structure derived from Dirac constraints associated with the two dispersion surfaces of the interacting waves.

Brizard, A. J. [Dept. Physics, Saint Michael's College, Colchester, VT 05439 (United States); Tracy, E. R.; Johnston, D. [Dept. Physics, College of William and Mary, Williamsburg, VA 23187-8795 (United States); Kaufman, A. N. [LBNL and Physics Dept., UC Berkeley, Berkeley, CA 94720 (United States); Richardson, A. S. [T-5, LANL, Los Alamos, NM 87545 (United States); Zobin, N. [Dept. Mathematics, College of William and Mary, Williamsburg, VA 23187-8795 (United States)

2011-12-23T23:59:59.000Z

67

Boundary integral solution of potential problems arising in the modelling of electrified oil films  

E-Print Network (OSTI)

We consider a class of potential problems on a periodic half-space for the modelling of electrified oil films, which are used in the development of novel switchable liquid optical devices (diffraction gratings). A boundary integral formulation which reduces the problem to the study of the oil-air interface alone is derived and solved in a highly efficient manner using the Nystr\\"{o}m method. The oil films encountered experimentally are typically very thin and thus an interface-only integral representation is important for avoiding the near-singularity problems associated with boundary integral methods for long slender domains. The super-algebraic convergence of the proposed methods is discussed and demonstrated via appropriate numerical experiments.

Chappell, David J

2014-01-01T23:59:59.000Z

68

Benchmarking ICRF simulations for ITER  

SciTech Connect

Abstract Benchmarking of full-wave solvers for ICRF simulations is performed using plasma profiles and equilibria obtained from integrated self-consistent modeling predictions of four ITER plasmas. One is for a high performance baseline (5.3 T, 15 MA) DT H-mode plasma. The others are for half-field, half-current plasmas of interest for the pre-activation phase with bulk plasma ion species being either hydrogen or He4. The predicted profiles are used by seven groups to predict the ICRF electromagnetic fields and heating profiles. Approximate agreement is achieved for the predicted heating power partitions for the DT and He4 cases. Profiles of the heating powers and electromagnetic fields are compared.

R. V. Budny, L. Berry, R. Bilato, P. Bonoli, M. Brambilla, R.J. Dumont, A. Fukuyama, R. Harvey, E.F. Jaeger, E. Lerche, C.K. Phillips, V. Vdovin, J. Wright, and members of the ITPA-IOS

2010-09-28T23:59:59.000Z

69

ITER Fusion Energy  

ScienceCinema (OSTI)

ITER (in Latin ?the way?) is designed to demonstrate the scientific and technological feasibility of fusion energy. Fusion is the process by which two light atomic nuclei combine to form a heavier over one and thus release energy. In the fusion process two isotopes of hydrogen ? deuterium and tritium ? fuse together to form a helium atom and a neutron. Thus fusion could provide large scale energy production without greenhouse effects; essentially limitless fuel would be available all over the world. The principal goals of ITER are to generate 500 megawatts of fusion power for periods of 300 to 500 seconds with a fusion power multiplication factor, Q, of at least 10. Q ? 10 (input power 50 MW / output power 500 MW). The ITER Organization was officially established in Cadarache, France, on 24 October 2007. The seven members engaged in the project ? China, the European Union, India, Japan, Korea, Russia and the United States ? represent more than half the world?s population. The costs for ITER are shared by the seven members. The cost for the construction will be approximately 5.5 billion Euros, a similar amount is foreseen for the twenty-year phase of operation and the subsequent decommissioning.

Dr. Norbert Holtkamp

2010-01-08T23:59:59.000Z

70

Co-simulation for performance prediction of integrated building and HVAC systems -An analysis of solution  

E-Print Network (OSTI)

Co-simulation for performance prediction of integrated building and HVAC systems - An analysis performance simulation of buildings and heating, ventilation and air- conditioning (HVAC) systems can help, heating, ventilation and air-conditioning (HVAC) systems are responsible for 10%-60% of the total building

71

Demonstrating and Deploying Integrated Retrofit Technologies and Solutions- 2014 BTO Peer Review  

Energy.gov (U.S. Department of Energy (DOE))

Presenter: Mark Stutman, Consortium for Building Energy Innovation The Penn State Consortium for Building Energy Innovation focuses on the development, demonstration, and deployment of energy-saving technologies and solutions that can achieve 50% energy reduction in small- and medium-sized commercial buildings (SMSCBs).

72

PTRANSP Tests Of TGLF And Predictions For ITER  

SciTech Connect

One of the physics goals for ITER is to achieve high fusion power PDT at a high gain QDT. This goal is important for studying the physics of reactor-relevant burning plasmas. Simulations of plasma performance in ITER can help achieve this goal by aiding in the design of systems such as diagnostics and in planning ITER plasma regimes. Simulations can indicate areas where further research in theory and experiments is needed. To have credible simulations integrated modeling is necessary since plasma profiles and applied heating, torque, and current drive are strongly coupled.

Robert V. Budny, Xingqiu Yuan, S. Jardin, G. Hammett, G. Staebler, members of the ITPA Transport and Confinement Topical Group, and JET EFDA Contributions

2012-02-28T23:59:59.000Z

73

RF-driven advanced modes of ITER operation  

SciTech Connect

The impact of the Radio Frequency heating and current drive systems on the ITER advanced scenarios is analyzed by means of the CRONOS suite of codes for integrated tokamak modelling. As a first step, the code is applied to analyze a high power advanced scenario discharge of JET in order to validate both the heating and current drive modules and the overall simulation procedure. Then, ITER advanced scenarios, based on Radio Frequency systems, are studied on the basis of previous results. These simulations show that both hybrid and steady-state scenarios could be possible within the ITER specifications, using RF heating and current drive only.

Garcia, J.; Artaud, J. F.; Basiuk, V.; Decker, J.; Giruzzi, G.; Hawkes, N.; Imbeaux, F.; Litaudon, X.; Mailloux, J.; Peysson, Y.; Schneider, M. [CEA, IRFM, F-13108 Saint-Paul-lez-Durance (France); Brix, M. [UKAEA/Euratom Fusion Association, Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom)

2009-11-26T23:59:59.000Z

74

Chapter 8 - Advances in Market Management Solutions for Variable Energy Resources Integration  

Science Journals Connector (OSTI)

Abstract Integration of more and more Variable Energy Resources (VER) into the system has introduced new challenges to grid and market operations. This chapter first provides an overview of wholesale electricity markets and market management systems. The intermittent nature of VER’s increases the need for system ramping capability in real-time balancing market, and causes issues in long term market pricing and resource adequacy. Enhancements are being made in both market design and market analytical tools in terms of managing operational uncertainties introduced by VER integration. The rest of the chapter focuses on two areas of market enhancement. The first one is the idea to establish a ramp market in real-time balancing operation to create the right market incentives for resources to provide enough ramping energy to compensate VER volatility. The second topic is to manage short-term VER uncertainty by applying robust optimization to look-ahead unit commitment.

Xing Wang

2014-01-01T23:59:59.000Z

75

An iterative semi-implicit scheme with robust damping  

Science Journals Connector (OSTI)

An efficient, iterative semi-implicit (SI) numerical method for the time integration of stiff wave systems is presented. Physics-based assumptions are used to derive a convergent iterative formulation of the SI scheme which enables the monitoring and ... Keywords: 52.30Ex, 52.35Hr, 52.35Py, 52.35Vd, 52.65Tt, Dispersive plasma waves, Gyrofluid, Magnetic reconnection, Robust damping, Semi-implicit methods, Symplectic methods

N. F. Loureiro; G. W. Hammett

2008-04-01T23:59:59.000Z

76

Path-integral solution of the one-dimensional Dirac quantum cellular automaton  

E-Print Network (OSTI)

Quantum cellular automata have been recently considered as a fundamental approach to quantum field theory, resorting to a precise automaton, linear in the field, for the Dirac equation in one dimension. In such linear case a quantum automaton is isomorphic to a quantum walk, and a convenient formulation can be given in terms of transition matrices, leading to a new kind of discrete path integral that we solve analytically in terms of Jacobi polynomials versus the arbitrary mass parameter.

Giacomo Mauro D'Ariano; Nicola Mosco; Paolo Perinotti; Alessandro Tosini

2014-06-04T23:59:59.000Z

77

Reflectometry on ITER  

Science Journals Connector (OSTI)

Reflectometry will be used on ITER to measure the density profile in the main plasma and divertor regions and to measure the plasma position and shape in order to provide a standby reference for the magnetic diagnostics in long pulse discharges. The high temperatures of the ITER core and the resultant significant relativistic downshift of the second-harmonic electron cyclotron absorption imply that both low-field side O-mode and high-field side lower cut-off (X?l mode) systems are required to access the full plasma profile. A low-field side upper cut-off (X?u mode) system will also be required for measurements of the scrape-off layer. For measurements of the plasma position and shape an O-mode system is optimum due to the large range of magnetic field along the plasma periphery and the wide range of possible plasma configurations achievable on ITER. A robust real-time calibration technique of the whole transmission line is required. It is likely that an accurate estimate of the position of the plasma will require the simultaneous use of signals from the profile reflectometer. For the divertor profiles with peak densities in the range 1019–1022/m3 are to be measured with a target resolution of 3 mm. The large density range will necessitate the use of more than one system. Installing these reflectometers on ITER incurs additional difficulties such as the routing of the millimetre wave radiation around the complicated first wall and divertor structures and design of antennas able to operate through the first wall and blanket.

N. Bretz; E. Doyle; V. A. Vershkov; A. J. H. Donné; J. Irby; M. E. Manso; A. Mase; J. Sanchez; V. F. Shevchenko; C. I. Walker; ITER Joint Central Team and Home Teams

1997-01-01T23:59:59.000Z

78

Variational Iteration Method for Image Restoration  

E-Print Network (OSTI)

The famous Perona-Malik (P-M) equation which was at first introduced for image restoration has been solved via various numerical methods. In this paper we will solve it for the first time via applying a new numerical method called the Variational Iteration Method (VIM) and the correspondent approximated solutions will be obtained for the P-M equation with regards to relevant error analysis. Through implementation of our algorithm we will access some effective results which are deserved to be considered as worthy as the other solutions issued by the other methods.

Yahya, Keyvan; Azari, Hossein; Fard, Pouyan Rafiei

2010-01-01T23:59:59.000Z

79

ITER: an integrated approcah to ignited plasmas  

Science Journals Connector (OSTI)

...International Thermonuclear Experimental...demonstrate essential fusion reactor technologies...poten- tial of thermonuclear fusion as a practical...International Thermonuclear Experimental...world's leading fusion programmes...

1999-01-01T23:59:59.000Z

80

Photo: US ITER/ORNL INSIDE: ITER Site Progress  

NLE Websites -- All DOE Office Websites (Extended Search)

current transformers, HV circuit breakers, HV potential transformers, HV surge arresters, HV substation hardware, and HV substation transformers. Delivery of equipment to the ITER...

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

ITER Project Scientific Foundations Mission  

NLE Websites -- All DOE Office Websites (Extended Search)

ITER Project Scientific Foundations Mission Investment and Return Fusion reactions power the sun and the stars. To achieve fusion power on earth, a fusion reactor requires a...

82

Design Analysis and Manufacturing Studies for ITER In-Vessel Coils  

SciTech Connect

ITER is incorporating two types of In Vessel Coils (IVCs): ELM Coils to mitigate Edge Localized Modes and VS Coils to provide Vertical Stabilization of the plasma. Strong coupling with the plasma is required so that the ELM and VS Coils can meet their performance requirements. Accordingly, the IVCs are in close proximity to the plasma, mounted just behind the Blanket Shield Modules. This location results in a radiation and temperature environment that is severe necessitating new solutions for material selection as well as challenging analysis and design solutions. Fitting the coil systems in between the blanket shield modules and the vacuum vessel leads to difficult integration with diagnostic cabling and cooling water manifolds.

Kalish, M.; Heitzenroeder, P.; Neumeyer, C.; Titus, P.; Zhai, Y.; Zatz, I.; Messineo, M.; Gomez, M.; Hause, C. [Princeton Plasma Physics Lab., Princeton, NJ (United States); Daly, E.; Martin, A. [ITER Organization, St. Paul-lez-Duranace (France); Wu, Y.; Jin, J.; Long, F.; Song, Y.; Wang, Z.; Yun, Zan [Chinese Academy of Sciences, Anhui (China). Institute of Plasma Physics; Hsiao, J. [Vector Resources, Annandale, VA (United States); Pillsbury, J. R. [Sherbrooke Consulting, Arlington, VA (United States); Bohm, T.; Sawan, M. [Univ. of Wisconsin-Madison, WI (United States). Fustion Technology Institute; Jiang, NFN [Southwestern Institute of Physics, Chengdu (China)

2014-07-01T23:59:59.000Z

83

Princeton Plasma Physics Lab - ITER  

NLE Websites -- All DOE Office Websites (Extended Search)

iter ITER is a large international iter ITER is a large international fusion experiment aimed at demonstrating the scientific and technological feasibility of fusion energy.ITER (Latin for "the way") will play a critical role advancing the worldwide availability of energy from fusion - the power source of the sun and the stars.To produce practical amounts of fusion power on earth, heavy forms of hydrogen are joined together at high temperature with an accompanying production of heat energy. The fuel must be held at a temperature of over 100 million degrees Celsius. At these high temperatures, the electrons are detached from the nuclei of the atoms, in a state of matter called plasma. en New imaging technique provides improved insight into controlling the plasma in fusion experiments

84

ITER Diagnostic First Wal  

SciTech Connect

The ITER Diagnostic Division is responsible for designing and procuring the First Wall Blankets that are mounted on the vacuum vessel port plugs at both the upper and equatorial levels This paper will discuss the effects of the diagnostic aperture shape and configuration on the coolant circuit design. The DFW design is driven in large part by the need to conform the coolant arrangement to a wide variety of diagnostic apertures combined with the more severe heating conditions at the surface facing the plasma, the first wall. At the first wall, a radiant heat flux of 35W/cm2 combines with approximate peak volumetric heating rates of 8W/cm3 (equatorial ports) and 5W/cm3 (upper ports). Here at the FW, a fast thermal response is desirable and leads to a thin element between the heat flux and coolant. This requirement is opposed by the wish for a thicker FW element to accommodate surface erosion and other off-normal plasma events.

G. Douglas Loesser, et. al.

2012-09-21T23:59:59.000Z

85

Negative Ion Based Heating and Diagnostic Neutral Beams for ITER  

SciTech Connect

To meet the requirements of the four operating and one start-up scenarios foreseen in the International Tokamak Experimental Reactor (ITER) a flexible heating mix will be required, which has to include a reliable contribution from neutral beams. The current baseline of ITER foresees 2 Heating Neutral Beam (HNB) systems based on negative ion technology, each operating at 1 MeV 40 A D{sup -} ions, and each capable of delivering up to 16.7 MW of D deg. to the ITER plasma. A 3rd HNB injector is foreseen as an upgrade option. In addition a dedicated Diagnostic Neutral Beam (DNB) injecting 100 keV 60 A of negative hydrogen ions will be available for charge exchange resonant spectroscopy (CXRS). The significant R and D effort necessary to meet the design requirements will be provided in the Neutral Beam Test Facility (NBTF), which is to be constructed in Padua, Italy. This paper gives an overview of the current status of the neutral beam (NB) systems and the chosen configuration. The ongoing integration effort into the ITER plant is highlighted and open interface issues are identified. It is shown how installation and maintenance logistics has influenced the design. ITER operating scenarios are briefly discussed, including start-up and commissioning. For example it is now envisaged to have a low current hydrogen phase of ITER operations, essentially for commissioning of the many auxiliary systems used on ITER. The low current limits the achievable plasma density, and hence the NB energy due to shine through limitations. Therefore a possible reconfiguration of the auxiliary heating systems is now being discussed. Other NB related issues identified by the ongoing design review process are emphasized and possible impact on the implementations of the HNB and DNB systems is indicated.

Schunke, B.; Bora, D.; Cordier, J.-J.; Hemsworth, R.; Tanga, A. [ITER Organization, Cadarache, 13108 St.-Paul-lez-Durance (France); Antoni, V. [Consorzio RFX, EURATOM-ENEA Association, Corso Stati Uniti 4, I-35127 (Italy); Bonicelli, T. [IPR, Bhat, Gandhinagar, Gujarat, 382428 (India); Chakraborty, A. [EFDA CSU, Boltzmannstrasse 2, D-85748, Garching (Germany); Inoue, T.; Watanabe, K. [JAEA, 801-1 Mukouyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193 (Japan)

2008-04-07T23:59:59.000Z

86

U.S. ITER | Princeton Plasma Physics Lab  

NLE Websites -- All DOE Office Websites (Extended Search)

Sciences The ITER Project: International Collaboration to Demonstrate Nuclear Fusion Read more about The ITER Project: International Collaboration to Demonstrate...

87

D. Mundy UKAIS PhD Consortium 2003. Providing a Secure Solution For The Integration Of Electronic  

E-Print Network (OSTI)

for the patient on a paper prescription form. The health care provider signs this form by hand. The patient can Prescription Transfer Within The United Kingdom National Health Service D.P.Mundy Abstract This paper provides could be integrated successfully into the UK National Health Service (NHS), was developed. The described

Kent, University of

88

Matlab modeling of ITER CODAC  

Science Journals Connector (OSTI)

The ITER CODAC (COntrol, Data Access and Communication) conceptual design resulted from 2 years of activity. One result was a proposed functional partitioning of CODAC into different CODAC Systems, each of them partitioned into other CODAC Systems. Considering the large size of this project, simple use of human language assisted by figures would certainly be ineffective in creating an unambiguous description of all interactions and all relations between these Systems. Moreover, the underlying design is resident in the mind of the designers, who must consider all possible situations that could happen to each system. There is therefore a need to model the whole of CODAC with a clear and preferably graphical method, which allows the designers to verify the correctness and the consistency of their project. The aim of this paper is to describe the work started on ITER CODAC modeling using Matlab/Simulink. The main feature of this tool is the possibility of having a simple, graphical, intuitive representation of a complex system and ultimately to run a numerical simulation of it. Using Matlab/Simulink, each CODAC System was represented in a graphical and intuitive form with its relations and interactions through the definition of a small number of simple rules. In a Simulink diagram, each system was represented as a “black box”, both containing, and connected to, a number of other systems. In this way it is possible to move vertically between systems on different levels, to show the relation of membership, or horizontally to analyse the information exchange between systems at the same level. This process can be iterated, starting from a global diagram, in which only CODAC appears with the Plant Systems and the external sites, and going deeper down to the mathematical model of each CODAC system. The Matlab/Simulink features for simulating the whole top diagram encourage us to develop the idea of completing the functionalities of all systems in order to finally have a full simulation of ITER CODAC.

L. Pangione; J.B. Lister

2008-01-01T23:59:59.000Z

89

Solitary Waves of the MRLW Equation by Variational Iteration Method  

SciTech Connect

In a recent publication, Soliman solved numerically the modified regularized long wave (MRLW) equation by using the variational iteration method (VIM). In this paper, corrected numerical results have been computed, plotted, tabulated, and compared with not only the exact analytical solutions but also the Adomian decomposition method results. Solitary wave solutions of the MRLW equation are exactly obtained as a convergent series with easily computable components. Propagation of single solitary wave, interaction of two and three waves, and also birth of solitons have been discussed. Three invariants of motion have been evaluated to determine the conservation properties of the problem.

Hassan, Saleh M. [Department of Mathematics, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451 (Saudi Arabia); Department of Mathematics, College of Science, Ain Shams University, Abbassia 11566, Cairo (Egypt); Alamery, D. G. [Department of Mathematics, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451 (Saudi Arabia)

2009-09-09T23:59:59.000Z

90

Iterative Entanglement Distillation: Approaching full Elimination of Decoherence  

E-Print Network (OSTI)

The distribution and processing of quantum entanglement form the basis of quantum communication and quantum computing. The realization of the two is difficult because quantum information inherently has a high susceptibility to decoherence, i.e. to uncontrollable information loss to the environment. For entanglement distribution, a proposed solution to this problem is capable of fully eliminating decoherence; namely iterative entanglement distillation. This approach builds on a large number of distillation steps each of which extracts a number of weakly decohered entangled states from a larger number of strongly decohered states. Here, for the first time, we experimentally demonstrate iterative distillation of entanglement. Already distilled entangled states were further improved in a second distillation step and also made available for subsequent steps.Our experiment displays the realization of the building blocks required for an entanglement distillation scheme that can fully eliminate decoherence.

Boris Hage; Aiko Samblowski; James DiGuglielmo; Jaromír Fiurášek; Roman Schnabel

2010-07-09T23:59:59.000Z

91

ITER?  

NLE Websites -- All DOE Office Websites (Extended Search)

properties? * Can the tokamak confinement concept be extended to the continuous, self-sustaining regime required for future power plants? * What materials and components are...

92

The physics role of ITER  

SciTech Connect

Experimental research on the International Thermonuclear Experimental Reactor (ITER) will go far beyond what is possible on present-day tokamaks to address new and challenging issues in the physics of reactor-like plasmas. First and foremost, experiments in ITER will explore the physics issues of burning plasmas--plasmas that are dominantly self-heated by alpha-particles created by the fusion reactions themselves. Such issues will include (i) new plasma-physical effects introduced by the presence within the plasma of an intense population of energetic alpha particles; (ii) the physics of magnetic confinement for a burning plasma, which will involve a complex interplay of transport, stability and an internal self-generated heat source; and (iii) the physics of very-long-pulse/steady-state burning plasmas, in which much of the plasma current is also self-generated and which will require effective control of plasma purity and plasma-wall interactions. Achieving and sustaining burning plasma regimes in a tokamak necessarily requires plasmas that are larger than those in present experiments and have higher energy content and power flow, as well as much longer pulse length. Accordingly, the experimental program on ITER will embrace the study of issues of plasma physics and plasma-materials interactions that are specific to a reactor-scale fusion experiment. Such issues will include (i) confinement physics for a tokamak in which, for the first time, the core-plasma and the edge-plasma are simultaneously in a reactor-like regime; (ii) phenomena arising during plasma transients, including so-called disruptions, in regimes of high plasma current and thermal energy; and (iii) physics of a radiative divertor designed for handling high power flow for long pulses, including novel plasma and atomic-physics effects as well as materials science of surfaces subject to intense plasma interaction. Experiments on ITER will be conducted by researchers in control rooms situated at major fusion laboratories around the world, linked by high-speed computer networks--thus extending further what is already a much-acclaimed paradigm for international collaboration in science.

Rutherford, P.H.

1997-04-01T23:59:59.000Z

93

Systems Integration  

Energy.gov (U.S. Department of Energy (DOE))

Through the SunShot Initiative, the U.S. Department of Energy (DOE) supports the development of innovative, cost-effective solutions that allow increasing amounts of solar energy to integrate...

94

Iterative Bridge and Roll for Connection Rerouting  

Science Journals Connector (OSTI)

We propose a heuristic connection rerouting scheme that iteratively bridges and rolls a subset of connections for improving network utilization. The proposed scheme has no disrupted...

Zhang, Qiong; Gao, Chengyi; Wang, Xi; Palacharla, Paparao; Sekiya, Motoyoshi

95

Future U.S. ITER Safety Studies  

SciTech Connect

With the US re-entering the ITER project, the US safety program has been tasked to address safety issues left unresolved during the US absence over the past five years. As a consequence our current and future US ITER safety studies will focus on validating US safety analysis tools that underpin the ITER safety analysis, refining in-vessel dust and tritium inventory safety limits and developing corresponding dust and tritium removal strategies that will demonstrate compliance with ITER limits without hampering operational flexibility of the machine00.

Petti, D.A.; Merrill, B.J. [Idaho National Engineering and Environmental Laboratory (United States)

2005-05-15T23:59:59.000Z

96

Funding for nuclear fusion Expensive Iteration  

E-Print Network (OSTI)

producing more energy than is put in. The International Thermonuclear Experimental Reactor became plain ITER aims to produce energy by fusing together the nuclei of hydrogen atoms, confined in a magnetic field. The proposal also needs approval from the European Parliament. Some Green MEPs have called for ITER

97

Iterative multiuser detection techniques for CDMA systems  

E-Print Network (OSTI)

) with (3. 40) where (ok" )' and (a&", ) are the variances of g?" and y&", ?, respectively, &t~" is the output of the inference cain:&&ll&&i in iteration n before con&bi?ing with an improved decoder input, fr&&n& the previous iteration n ? 1, denoted...

Du, Xuechao

2012-06-07T23:59:59.000Z

98

Recursive Turtle Programs and Iterated Affine Transformations  

E-Print Network (OSTI)

Recursive Turtle Programs and Iterated Affine Transformations Tao Ju*, Scott Schaefer, Ron Goldman of equivalence between the class of fractals created by Recursive Turtle Programs (RTP) and Iterated Affine, turtle graphics 1 Introduction In computer graphics, there are several different methods for generating 2

Schaefer, Scott

99

ITER --"INTERNATIONAL THERMONUCLEAR EXPERIMENTAL RESEARCH PROGRAM".  

E-Print Network (OSTI)

ITER -- "INTERNATIONAL THERMONUCLEAR EXPERIMENTAL RESEARCH PROGRAM". ORGANIZATION TO DIRECT WORLD plasmas and thermonuclear burn processes (cost -$1.5-36)2. (2) An expanded, more ambitious international Thermonuclear Experimental Research Program" by L. J. Perkins #12;NORMAL-CONDUCTING COPPER OPTIONS FOR THE ITER

100

Demonstrating and Deploying Integrated Retrofit Technologies...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Demonstrating and Deploying Integrated Retrofit Technologies and Solutions - 2014 BTO Peer Review Demonstrating and Deploying Integrated Retrofit Technologies and Solutions - 2014...

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

IAEA-CN-SO/F-I-4 ITER: CONCEPT DEFINITION*  

E-Print Network (OSTI)

way. 1. INTRODUCTION The activity of the International Thermonuclear Experimental Reactor (ITER. * The activity of the International Thermonuclear Experimental Reactor (ITER) is conducted under the auspices

102

Cryogenic system for ITER CS model coil  

SciTech Connect

A 5-kW/4.5-K helium refrigerator has been developed, which will be used for the test of ITER Central Solenoid Model Coil that is under fabrication by an international collaboration under the framework of the ITER Engineering Design Activity. Its acceptance test was recently finished and its specified refrigeration power of 5 kW with a surplus liquefaction rate of 114 1/h was demonstrated. A major feature of the refrigerator is that newly developed components, such as helium compressor and turbo-expander, are adopted in its simple refrigeration process in order that the results will be transferred to the ITER helium cryogenic system.

Kato, T.; Hamada, K.; Kawano, K.; Hiyama, T. [JAERI, Naka Fusion Research Establishment, Nada-machi, Nada-gun, Ibaraki-ken (Japan)] [and others

1996-12-31T23:59:59.000Z

103

Fast iterative graph computation with block updates  

Science Journals Connector (OSTI)

Scaling iterative graph processing applications to large graphs is an important problem. Performance is critical, as data scientists need to execute graph programs many times with varying parameters. The need for a high-level, high-performance programming ...

Wenlei Xie; Guozhang Wang; David Bindel; Alan Demers; Johannes Gehrke

2013-09-01T23:59:59.000Z

104

Electromagnetic Analysis For The Design Of ITER Diagnostic Port Plugs During Plasma Disruptions  

SciTech Connect

ITER diagnostic port plugs perform many functions including structural support of diagnostic systems under high electromagnetic loads while allowing for diagnostic access to plasma. The design of diagnotic equatorial port plugs (EPP) are largely driven by electromagnetic loads and associate response of EPP structure during plasma disruptions and VDEs. This paper summarizes results of transient electromagnetic analysis using Opera 3d in support of the design activities for ITER diagnostic EPP. A complete distribution of disruption loads on the Diagnostic First Walls (DFWs). Diagnostic Shield Modules (DSMs) and the EPP structure, as well as impact on the system design integration due to electrical contact among various EPP structural components are discussed.

Zhai, Y

2014-03-03T23:59:59.000Z

105

Electromagnetic Analysis of ITER Diagnostic Equatorial Port Plugs During Plasma Disruptions  

SciTech Connect

ITER diagnostic port plugs perform many functionsincluding structural support of diagnostic systems under high electromagnetic loads while allowing for diagnostic access to the plasma. The design of diagnostic equatorial port plugs (EPP) are largely driven by electromagnetic loads and associate responses of EPP structure during plasma disruptions and VDEs. This paper summarizes results of transient electromagnetic analysis using Opera 3d in support of the design activities for ITER diagnostic EPP. A complete distribution of disruption loads on the Diagnostic First Walls (DFWs), Diagnostic Shield Modules (DSMs) and the EPP structure, as well as impact on the system design integration due to electrical contact among various EPP structural components are discussed.

Y. Zhai, R. Feder, A. Brooks, M. Ulrickson, C.S. Pitcher and G.D. Loesser

2012-08-27T23:59:59.000Z

106

Energy Panel Asks U.S. to Rejoin ITER  

Science Journals Connector (OSTI)

...fusion project could win out if ITER fails. CREDIT: FIRE/PPPL Full U.S. partnership in the ITER collaboration would cost...fusion project could win out if ITER fails. CREDIT: FIRE/PPPL Full U.S. partnership in the ITER collaboration would cost...

Charles Seife

2002-09-20T23:59:59.000Z

107

Curvature Integrals and Iteration Complexities in SDP and ...  

E-Print Network (OSTI)

Sep 30, 2011 ... In particular, we conduct numerical experiments in practically ...... respectively, and the fact that these operations are done in the compact ...

2011-09-30T23:59:59.000Z

108

The roadmap to magnetic confinement fusion Cutaway of the ITER tokamak. ( ITER)  

E-Print Network (OSTI)

The roadmap to magnetic confinement fusion Cutaway of the ITER tokamak. (© ITER) There are two ways "tokamak" configuration invented by Tamm and Sakharov in 1950 and declassified in 1957 [1] . Over 198 tokamaks have been built [2] . Four large tokamak projects were built in the 1980s. Two of these

Hampshire, Damian

109

JJ, IAP Cambridge January 20101 Fusion Energy & ITER:Fusion Energy & ITER  

E-Print Network (OSTI)

Billions ITERITER startsstarts DEMODEMO decisiondecision:: Fusion impact? Energy without greenEnergyJJ, IAP Cambridge January 20101 Fusion Energy & ITER:Fusion Energy & ITER: Challenges without green house gashouse gas #12;JJ, IAP Cambridge January 20103 3 D + T + He ++ n U235 n n Neutrons

110

US Burning Plasma Workshop Oak Ridge National Laboratory US Contributions to ITER Project (US ITER)  

E-Print Network (OSTI)

US Burning Plasma Workshop Oak Ridge National Laboratory US Contributions to ITER Project (US ITER Plasma Workshop Oak Ridge, TN December 7, 2005 #12;US Burning Plasma Workshop Oak Ridge National '06 Expectations · Summary #12;US Burning Plasma Workshop Oak Ridge National Laboratory Highlights

111

Integrated Technology Deployment  

Office of Energy Efficiency and Renewable Energy (EERE)

Integrated technology deployment is a comprehensive approach to implementing solutions that increase the use of energy efficiency and renewable energy technologies. Federal, state, and local...

112

San Diego 01.05.2001 Power and Particle Exhaust in ITER Slide 1 by G. Janeschitz, et.al. _______________________________________________________________________ ITER  

E-Print Network (OSTI)

San Diego 01.05.2001 Power and Particle Exhaust in ITER Slide 1 by G. Janeschitz, et.al. ITER Exhaust in ITER Slide 2 by G. Janeschitz. ITER to pump #12;San Diego; 01.05.2001 Power and Particle Exhaust in ITER Slide 3 by G. Janeschitz. ITER

113

PPPL--2702 Power Radiated from ITER  

NLE Websites -- All DOE Office Websites (Extended Search)

702 702 " Power Radiated from ITER and CIT by Impurities D E ~ O 014715 J. Cummings, S. A. Cohen, R Hulse, D. E. Post, M. H. Redi and J. Perkinst Princeton Plasma Physics Laboratory Princeton University, Rinceton, NJ 08543 Abstract The MIST code has been used to model impurity radiation from the edge and core plasmas in ITER and CIT. A broad range of parameters have been varied, including Zeff, impurity species, impurity transport coefficients, and plasma temperature and density profiles, especially at the edge. For a set of these parameters representative of the baseline ITER ignition scenario, it is seen that impurity radiation, which is produced in roughly equal amounts by the edge and core regions, can make a major improvement in divertor operation without compromising core

114

ITER magnet and structure assembly plan  

SciTech Connect

The International Thermonuclear Experimental Reactor (ITER) is the largest tokamak that has ever been planned. The assembly of the ITER machine presents several unique problems for handling, alignment and bracing of the superconducting magnets and structure components, in particular the Toroidal Field (TF) coil with the corresponding Vacuum Vessel (VV) sector (1,200 tonnes), and the Central Solenoid (CS) with the Buckling Cylinder (BC) assembly (1,350 tonnes). Accurate positioning of the toroidal field coils relative to one another, and relative to the central solenoid will be required, to achieve the design stresses in the magnets during cool down, and machine operation. Special tooling will be used to limit component distortion during installation, shorten the schedule, and reduce the cost. Assembly issues and features of handling, positioning, and immobilizing of the superconducting coils and structure components for the ITER are discussed.

Piec, Z.; Puhn, F.; Oikawa, Akira; Helary, J.L.; Ioki, Kimihiro; Johnson, G.; Shimizu, Katsusuke; Tachikawa, Nobuo

1995-12-31T23:59:59.000Z

115

Solid breeder blanket option for the ITER conceptual design  

SciTech Connect

A solid-breeder water-cooled blanket option was developed for ITER based on a multilayer configuration. The blanket uses beryllium for neutron multiplication and lithium oxide for tritium breeding. The material forms are sintered products for both material with 0.8 density factor. The lithium-6 enrichment is 90%. This blanket has the capability to accommodate a factor of two change in the neutron wall loading without violating the different design guidelines. The design philosophy adopted for the blanket is to produce the necessary tritium required for the ITER operation and to operate at power reactor conditions as much as possible. At the same time, the reliability and the safety aspects of the blanket are enhanced by the use of a low-pressure coolant and the separation of the tritium purge lines from the coolant system. The blanket modules are made by hot vacuum forming and diffusion bonding a double wall structure with integral cooling channels. The different aspects of the blanket design including tritium breeding, nuclear heat deposition, activation analyses, thermal-hydraulics, tritium inventory, structural analyses, and water coolant conditions are summarized in this paper. 12 refs., 2 figs., 1 tab.

Gohar, Y.; Attaya, H.; Billone, M.C.; Finn, P.; Majumdar, S.; Turner, L.R.; Baker, C.C.; Nelson, B.E.; Raffray, R. (Argonne National Lab., IL (USA); Oak Ridge National Lab., TN (USA); California Univ., Los Angeles, CA (USA))

1989-10-01T23:59:59.000Z

116

Beyond ITER: Neutral beams for DEMO  

E-Print Network (OSTI)

In the development of magnetically confined fusion as an economically sustainable power source, ITER is currently under construction. Beyond ITER is the DEMO programme in which the physics and engineering aspects of a future fusion power plant will be demonstrated. DEMO will produce net electrical power. The DEMO programme will be outlined and the role of neutral beams for heating and current drive will be described. In particular, the importance of the efficiency of neutral beam systems in terms of injected neutral beam power compared to wallplug power will be discussed. Options for improving this efficiency including advanced neutralisers and energy recovery are discussed.

McAdams, R

2013-01-01T23:59:59.000Z

117

Benchmarking ICRF Full-wave Solvers for ITER  

SciTech Connect

Abstract Benchmarking of full-wave solvers for ICRF simulations is performed using plasma profiles and equilibria obtained from integrated self-consistent modeling predictions of four ITER plasmas. One is for a high performance baseline (5.3 T, 15 MA) DT H-mode. The others are for half-field, half-current plasmas of interest for the pre-activation phase with bulk plasma ion species being either hydrogen or He4. The predicted profiles are used by six full-wave solver groups to simulate the ICRF electromagnetic fields and heating, and by three of these groups to simulate the current-drive. Approximate agreement is achieved for the predicted heating power for the DT and He4 cases. Factor of two disagreements are found for the cases with second harmonic He3 heating in bulk H cases. Approximate agreement is achieved simulating the ICRF current drive.

R. V. Budny, L. Berry, R. Bilato, P. Bonoli, M. Brambilla, R. J. Dumont, A. Fukuyama, R. Harvey, E. F. Jaeger, K. Indireshkumar, E. Lerche, D. McCune, C. K. Phillips, V. Vdovin, J. Wright, and members of the ITPA-IOS

2011-01-06T23:59:59.000Z

118

Iterated Green Functions 1 This article has appeared in  

E-Print Network (OSTI)

Iterated Green Functions 1-120. Sharp estimates for iterated Green functions H.-Ch. Grunau 1 and G. Sweers 2 (poly)harmonic Green functions corresponding to zero Dirichlet boundary c* *on- ditions

Grunau, Hans-Christoph

119

Microtearing Instability In The ITER Pedestal  

SciTech Connect

Unstable microtearing modes are discovered by the GS2 gyrokinetic siimulation code, in the pedestal region of a simulated ITER H-mode plasma with approximately 400 WM DT fusion power. Existing nonlinear theory indicates that these instabilities should produce stochastic magnetic fields and broaden the pedestal. The resulted electron thermal conductivity is estimated and the implications of these findings are discussed.

K.L. Wong, D.R. Mikkelsen, G.M. Rewoldt and R. Budny

2010-12-01T23:59:59.000Z

120

Spectral resolvability of iterated rippled noise  

Science Journals Connector (OSTI)

A forward?masking experiment was used to estimate the spectral ripple of iterated rippled noise (IRN) that is possibly resolved by the auditory system. Tonal signals were placed at spectral peaks and valleys of IRN maskers for a wide variety of IRN conditions that included different delays number of iterations and stimulus durations. The differences in the forward?masked thresholds of tones at spectral peaks and valleys were used to estimate spectral resolvability and these results were compared to estimates obtained from a gamma?tone filter bank. The IRN spectrum has spectral peaks that are harmonics of the reciprocal of the delay used to generate IRN stimuli. As the number of iterations in the generation of IRN stimuli increases so does the difference in the spectral peak?to?valley ratio. For high number of iterations long delays and long durations evidence for spectral resolvability existed up to the 6th harmonic. For all other conditions spectral resolvability appeared to disappear at harmonics lower than the 6th or was not measurable at all. These data will be discussed in terms of the role spectral resolvability might play in processing the pitch pitch strength and timbre of IRN stimuli. [Work supported by a grant from NIDCD.

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Iterative Collision Resolution in Wireless Networks  

E-Print Network (OSTI)

ITERATIVE COLLISION RESOLUTION IN WIRELESS NETWORKS An Undergraduate Research Scholars Thesis by KATHERINE CHRISTINE STUCKMAN Submitted to Honors and Undergraduate Research Texas A&M University in partial fulfillment... Networks (April 2013) Katherine Christine Stuckman Department of Electrical and Computer Engineering Texas A&M University Research Advisor: Dr. Krishna Narayanan Department of Electrical and Computer Engineering With the growing...

Stuckman, Katherine Christine

2013-03-29T23:59:59.000Z

122

Limited View Angle Iterative CT Reconstruction  

E-Print Network (OSTI)

;Some Prior Literature in Limited View Tomography CT with limited-angle data and few views IRR algorithm Iterative Reconstruction-Reprojection (IRR) : An Algorithm for Limited Data Cardiac- Computed-views and limited-angle data in divergent-beam CT by E. Y. Sidky, CM Kao, and X. Pan (2006) Few-View Projection

123

Improving eigenpairs of automated multilevel substructuring with subspace iterations  

Science Journals Connector (OSTI)

This paper improves the eigenpair approximations obtained from the automated multilevel substructuring (AMLS) method by subspace iterations. Two variants of AMLS hybrid Subspace Iteration Method (AMLS-SIMa and AMLS-SIMb) are proposed. AMLS-SIMa is a ... Keywords: AMLS, Eigenvalue, Eigenvector, Subspace iteration

Jiacong Yin; Heinrich Voss; Pu Chen

2013-04-01T23:59:59.000Z

124

A technique for generic iteration and its optimization  

Science Journals Connector (OSTI)

Software libraries rely increasingly on iterators to provide generic traversal of data structures. These iterators can be represented either as objects that maintain state or as programs that suspend and resume control. This paper addresses two problems ... Keywords: generic program, iterators

Stephen M. Watt

2006-09-01T23:59:59.000Z

125

Variational iteration method-Some recent results and new interpretations  

Science Journals Connector (OSTI)

This paper is an elementary introduction to the concepts of variational iteration method. First, the main concepts in variational iteration method, such as general Lagrange multiplier, restricted variation, correction functional, are explained heuristically. ... Keywords: 34A34, 34B15, 34C15, 35A15, Nonlinear equations, Variational iteration method

Ji-Huan He

2007-10-01T23:59:59.000Z

126

CCFE-PR(13)44 Beyond ITER: Neutral beams  

E-Print Network (OSTI)

R. McAdams CCFE-PR(13)44 Beyond ITER: Neutral beams for DEMO #12;Enquiries about copyright Kingdom Atomic Energy Authority is the copyright holder. #12;Beyond ITER: Neutral beams for DEMO R. Mc ITER: Neutral beams for DEMOa) R. McAdamsb) EURATOM/CCFE Association, Culham Science Centre, Abingdon

127

Demystifying 3D ICs: The pros and cons of going vertical An increasing number of integrated solutions involve the stacking of chips to reduce  

E-Print Network (OSTI)

between chips in a stack, making true 3D ICs a reality. Designers of integrated circuits need to be aware. Micro-bump technology involves the use of solder or gold bumps on the surface of the die to make

Davis, Rhett

128

A population-based iterated greedy algorithm for the minimum weight vertex cover problem  

Science Journals Connector (OSTI)

Given an undirected, vertex-weighted graph, the goal of the minimum weight vertex cover problem is to find a subset of the vertices of the graph such that the subset is a vertex cover and the sum of the weights of its vertices is minimal. This problem is known to be NP-hard and no efficient algorithm is known to solve it to optimality. Therefore, most existing techniques are based on heuristics for providing approximate solutions in a reasonable computation time. Population-based search approaches have shown to be effective for solving a multitude of combinatorial optimization problems. Their advantage can be identified as their ability to find areas of the space containing high quality solutions. This paper proposes a simple and efficient population-based iterated greedy algorithm for tackling the minimum weight vertex cover problem. At each iteration, a population of solutions is established and refined using a fast randomized iterated greedy heuristic based on successive phases of destruction and reconstruction. An extensive experimental evaluation on a commonly used set of benchmark instances shows that our algorithm outperforms current state-of-the-art approaches.

Salim Bouamama; Christian Blum; Abdellah Boukerram

2012-01-01T23:59:59.000Z

129

NREL: Distributed Grid Integration - Solar Distributed Grid Integration  

NLE Websites -- All DOE Office Websites (Extended Search)

Solar Distributed Grid Integration Projects Solar Distributed Grid Integration Projects NREL provides grid integration support, system-level testing, and systems analysis for DOE's Solar Distributed Grid Integration Projects supported by the SunShot Initiative. These projects address technical issues and develop solutions for high penetration grid integration of solar technologies into the electric power system to meet the following goals: Reduce cost: reduce interconnection costs by developing streamlined procedures including advanced integration models for utility interconnection of photovoltaics (PV) Reduce market barriers: work with utilities and system integrators to reduce market barriers by providing research on impacts of integration of high penetration of PV systems and developing solutions.

130

Fusion Technology for ITER, the ITER Project. Further Development Towards a DEMO Fusion Power Plant (3/4)  

E-Print Network (OSTI)

This is the second half of a lecture series on fusion and will concentrate on fusion technology. The early phase of fusion development was concentrated on physics. However, during the 1980s it was realized that if one wanted to enter the area of fusion reactor plasmas, even in an experimental machine, a significant advance in fusion technologies would be needed. After several conceptual studies of reactor class fusion devices in the 1980s the engineering design phase of ITER started in earnest during the 1990s. The design team was in the beginning confronted with many challenges in the fusion technology area as well as in physics for which no readily available solution existed and in a few cases it was thought that solutions may be impossible to find. However, after the initial 3 years of intensive design and R&D work in an international framework utilizing basic fusion technology R&D from the previous decade it became clear that for all problems a conceptual solution could be found and further devel...

CERN. Geneva

2011-01-01T23:59:59.000Z

131

Technological Institute of Renewable Energy ITER | Open Energy Information  

Open Energy Info (EERE)

Renewable Energy ITER Renewable Energy ITER Jump to: navigation, search Name Technological Institute of Renewable Energy (ITER) Place Santa Cruz de Tenerife, Spain Zip 38611 Sector Solar, Wind energy Product Spain-based, technological research and development institute focused on the solar and wind sectors. References Technological Institute of Renewable Energy (ITER)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Technological Institute of Renewable Energy (ITER) is a company located in Santa Cruz de Tenerife, Spain . References ↑ "Technological Institute of Renewable Energy (ITER)" Retrieved from "http://en.openei.org/w/index.php?title=Technological_Institute_of_Renewable_Energy_ITER&oldid=352069

132

Princeton Plasma Physics Lab - U.S. ITER  

NLE Websites -- All DOE Office Websites (Extended Search)

iter U.S. ITER en BBC iter U.S. ITER en BBC Video Looks at ITER http://www.pppl.gov/node/1536

American Fusion News Category: 
iter">U.S. ITER
133

Automated structure solution with the PHENIX suite  

SciTech Connect

Significant time and effort are often required to solve and complete a macromolecular crystal structure. The development of automated computational methods for the analysis, solution, and completion of crystallographic structures has the potential to produce minimally biased models in a short time without the need for manual intervention. The PHENIX software suite is a highly automated system for macromolecular structure determination that can rapidly arrive at an initial partial model of a structure without significant human intervention, given moderate resolution, and good quality data. This achievement has been made possible by the development of new algorithms for structure determination, maximum-likelihood molecular replacement (PHASER), heavy-atom search (HySS), template- and pattern-based automated model-building (RESOLVE, TEXTAL), automated macromolecular refinement (phenix. refine), and iterative model-building, density modification and refinement that can operate at moderate resolution (RESOLVE, AutoBuild). These algorithms are based on a highly integrated and comprehensive set of crystallographic libraries that have been built and made available to the community. The algorithms are tightly linked and made easily accessible to users through the PHENIX Wizards and the PHENIX GUI.

Terwilliger, Thomas C [Los Alamos National Laboratory; Zwart, Peter H [LBNL; Afonine, Pavel V [LBNL; Grosse - Kunstleve, Ralf W [LBNL

2008-01-01T23:59:59.000Z

134

Automated Structure Solution with the PHENIX Suite  

SciTech Connect

Significant time and effort are often required to solve and complete a macromolecular crystal structure. The development of automated computational methods for the analysis, solution and completion of crystallographic structures has the potential to produce minimally biased models in a short time without the need for manual intervention. The PHENIX software suite is a highly automated system for macromolecular structure determination that can rapidly arrive at an initial partial model of a structure without significant human intervention, given moderate resolution and good quality data. This achievement has been made possible by the development of new algorithms for structure determination, maximum-likelihood molecular replacement (PHASER), heavy-atom search (HySS), template and pattern-based automated model-building (RESOLVE, TEXTAL), automated macromolecular refinement (phenix.refine), and iterative model-building, density modification and refinement that can operate at moderate resolution (RESOLVE, AutoBuild). These algorithms are based on a highly integrated and comprehensive set of crystallographic libraries that have been built and made available to the community. The algorithms are tightly linked and made easily accessible to users through the PHENIX Wizards and the PHENIX GUI.

Zwart, Peter H.; Zwart, Peter H.; Afonine, Pavel; Grosse-Kunstleve, Ralf W.; Hung, Li-Wei; Ioerger, Tom R.; McCoy, A.J.; McKee, Eric; Moriarty, Nigel; Read, Randy J.; Sacchettini, James C.; Sauter, Nicholas K.; Storoni, L.C.; Terwilliger, Tomas C.; Adams, Paul D.

2008-06-09T23:59:59.000Z

135

Thematic Conference on Remote Sensing for Exploration Geology - Methods, Integration, Solutions, 7th, Calgary, Canada, Oct. 2-6, 1989, Proceedings. Volumes 1 2  

SciTech Connect

Recent advances in airborne and satellite remote-sensing technology for application to geological exploration are discussed in reviews and reports. Sections are devoted to basement tectonics and their surface expressions, spectral geology, hydrocarbon exploration applications, radar applications and future systems, engineering and environment issues, geobotanical remote sensing, advanced image processing, data integration and mapping, and mineral exploration. Extensive diagrams, graphs, and sample images are provided.

Not Available

1990-01-01T23:59:59.000Z

136

Nonlinear Projective-Iteration Methods for Solving Transport Problems on Regular and Unstructured Grids  

SciTech Connect

This is a project in the field of fundamental research on numerical methods for solving the particle transport equation. Numerous practical problems require to use unstructured meshes, for example, detailed nuclear reactor assembly-level calculations, large-scale reactor core calculations, radiative hydrodynamics problems, where the mesh is determined by hydrodynamic processes, and well-logging problems in which the media structure has very complicated geometry. Currently this is an area of very active research in numerical transport theory. main issues in developing numerical methods for solving the transport equation are the accuracy of the numerical solution and effectiveness of iteration procedure. The problem in case of unstructured grids is that it is very difficult to derive an iteration algorithm that will be unconditionally stable.

Dmitriy Y. Anistratov; Adrian Constantinescu; Loren Roberts; William Wieselquist

2007-04-30T23:59:59.000Z

137

Development and test of the ITER conductor joints  

SciTech Connect

Joints for the ITER superconducting Central Solenoid should perform in rapidly varying magnetic field with low losses and low DC resistance. This paper describes the design of the ITER joint and presents its assembly process. Two joints were built and tested at the PTF facility at MIT. Test results are presented, losses in transverse and parallel field and the DC performance are discussed. The developed joint demonstrates sufficient margin for baseline ITER operating scenarios.

Martovetsky, N., LLNL

1998-05-14T23:59:59.000Z

138

Design of the ITER ICRF Antenna  

SciTech Connect

The CYCLE consortium has been designing the ITER ICRF antenna since March 2010, supported by an F4E grant. Following a brief introduction to the consortium, this paper: describes the present status and layout of the design; highlights the key mechanical engineering features; shows the expected impact of cooling and radiation issues on the design and outlines the need for future R and D to support the design process. A key design requirement is the need for the mechanical design and analysis to be consistent with all requirements following from the RF physics and antenna layout optimisation. As such, this paper complements that of Durodie et al.

Hancock, D.; Nightingale, M.; Bamber, R.; Dalton, N.; Lister, J.; Porton, M.; Shannon, M.; Wilson, D.; Wooldridge, E. [EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon, OX14 5ER (United Kingdom); Durodie, F. [ERM/KMS, Association EURATOM-Belgian State, Brussels (Belgium); Firdaouss, M. [CEA, IRFM, F-1308 Saint-Paul-lez Durance (France); Winkler, K. [Max-Planck Institut fur Plasmaphysik, EURATOM-Assoziation, Garching (Germany)

2011-12-23T23:59:59.000Z

139

Diverse Power Iteration Embeddings and Its Applications  

SciTech Connect

Abstract—Spectral Embedding is one of the most effective dimension reduction algorithms in data mining. However, its computation complexity has to be mitigated in order to apply it for real-world large scale data analysis. Many researches have been focusing on developing approximate spectral embeddings which are more efficient, but meanwhile far less effective. This paper proposes Diverse Power Iteration Embeddings (DPIE), which not only retains the similar efficiency of power iteration methods but also produces a series of diverse and more effective embedding vectors. We test this novel method by applying it to various data mining applications (e.g. clustering, anomaly detection and feature selection) and evaluating their performance improvements. The experimental results show our proposed DPIE is more effective than popular spectral approximation methods, and obtains the similar quality of classic spectral embedding derived from eigen-decompositions. Moreover it is extremely fast on big data applications. For example in terms of clustering result, DPIE achieves as good as 95% of classic spectral clustering on the complex datasets but 4000+ times faster in limited memory environment.

Huang H.; Yoo S.; Yu, D.; Qin, H.

2014-12-14T23:59:59.000Z

140

Building America Technology Solutions for New and Existing Homes...  

Energy Savers (EERE)

Retrofit Integrated Space and Water Heating-Field Assessment Building America Technology Solutions for New and Existing Homes: Retrofit Integrated Space and Water Heating-Field...

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

TRANSP Tests Of TGLF and Predictions For ITER  

SciTech Connect

Gyro kinetic simulations of turbulence capture some of the features observed in transport, fluctuations, and correlations measured in tokamak plasmas. These codes calculations are CPU intensive, and are not practical for incorporation in present time-dependant transport codes, so reduced models based on these gyro kinetic codes are being used. An example is the TGLF model [1] which is a quasilinear gyrofluid model calibrated to nonlinear results from the GYRO code [2]. Recently TGLF has been incorporated into TRANSP. Analysis of experimental data using TRANSP with such models provides fundamental understanding of turbulent transport. Predictions of ITER performance with various plasma scenarios using such models are useful for optimizing design and for exposing issues that can be addressed in present experiments and theory. For instance, which combinations of heating, torquing, and current drive are optimal. Another application is for nuclear licensing (e.g. system integrity, neutron rates). Others are generating inputs for design of diagnostic systems and for theoretical studies. An example of the later is Alfv´en Eigenmode and AE-induced loss of fast ions. The beam ion distribution can either enhance or reduce the alpha pressure drive of the AE instability. The AE instability can cause dangerous amounts of fast ion losses, as was seen in TFTR.

none,; Budny, Robert; Yuan, Xingqiu

2014-02-26T23:59:59.000Z

142

Benchmarking ICRF full-wave solvers for ITER  

Science Journals Connector (OSTI)

Benchmarking full-wave solvers for ion-cyclotron range of frequency (ICRF) simulations is performed using plasma profiles and equilibria obtained from integrated self-consistent modelling predictions of four ITER plasmas. One is for a high-performance baseline (5.3?T, 15?MA) DT H-mode. The others are for half-field, half-current plasmas of interest for the pre-activation phase with bulk plasma ion species being either hydrogen or He4. The predicted profiles are used by six full-wave solver groups to simulate the ICRF electromagnetic fields and heating, and by three of these groups to simulate the current drive. Approximate agreement is achieved by four of the solvers for the heating power partitions for the DT and He4 cases. Factor of two or more disagreements are found for the heating power partitions for the cases with second harmonic He3 heating in bulk H cases. Approximate agreement is achieved simulating the ICRF current-drive 1D profiles.

R.V. Budny; L. Berry; R. Bilato; P. Bonoli; M. Brambilla; R.J. Dumont; A. Fukuyama; R. Harvey; E.F. Jaeger; K. Indireshkumar; E. Lerche; D. McCune; C.K. Phillips; V. Vdovin; J. Wright; members of the ITPA-IOS

2012-01-01T23:59:59.000Z

143

A Comparison of Iterative Multilevel Finite Element Solvers  

E-Print Network (OSTI)

de Janeiro, RJ 21945­970, Brazil Abstract A comparison is made of two iterative algorithms on the energy variation of the incremental correction through the iterative process, which seems to be a more of choice. The increasing computing power reached with vector and parallel computers has renewed

Coutinho, Alvaro L. G. A.

144

A Complete Equational Axiomatization for BPA with Pre x Iteration  

E-Print Network (OSTI)

A Complete Equational Axiomatization for BPA with Pre x Iteration Wan Fokkink & Hans Zantema, in the setting of Basic Process Algebra BPA together with the deadlock from Bergstra and Klop 1984 and the empty in a process algebra equivalent to BPA , including a conditional axiom for iteration from Salomaa 1966, and he

Utrecht, Universiteit

145

Nested Loop Algorithm for Parallel Model Based Iterative Reconstruction  

E-Print Network (OSTI)

Nested Loop Algorithm for Parallel Model Based Iterative Reconstruction Zhou Yu, Lin Fu, Debashish. In this paper, we propose a fast converging simultaneous-update algorithm using a nested loop structure tomography, iterative reconstruction, nested loop, preconditioner. I. INTRODUCTION Recent applications

146

Japan, EU reach basic agreement over ITER The Yomiuri Shimbun  

E-Print Network (OSTI)

Japan, EU reach basic agreement over ITER The Yomiuri Shimbun The government and the European Union to the unsuccessful candidate country. Japan and France, the EU's candidate, have been bidding to host the facility bidder's country. The ITER project participants--Japan, China, the EU, Russia, South Korea and the United

147

BPO Inputs to ITER Design Review on Pellet Pacing, RMP and RWM Coils,  

E-Print Network (OSTI)

Is a Pressing Issue for ITER Loarte et al., Nuclear Fusion, ITER Physics Basis,Chapter 4 Recent results reducedBPO Inputs to ITER Design Review on Pellet Pacing, RMP and RWM Coils, and Disruption Mitigation

148

Microsoft Word - Second_ ITER Council Press Release.doc  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Neil Calder Neil Calder Tel: 00 33 (0)6 14 16 41 75 ITER GAINS MOMENTUM Aomori, Japan 18 June 2008 On 17-18 June 2008, the ITER Council, the Governing Body of the new international Organization, convened for its second meeting. The two day meeting in Aomori, Japan, brought together senior representatives from the seven ITER Members: China, the European Union, India, Japan, Korea, Russia and the United States. Mr. Shingo Mimura, Governor of the Aomori Prefecture, welcomed delegates with a reminder of the global significance of the ITER project. "At a time when stable energy supplies and the promotion of strategies to tackle climate change are topics of global concern, the world is watching the ITER project. Implemented by seven parties that together make up half

149

ITER Central Solenoid Coil Insulation Qualification  

SciTech Connect

An insulation system for ITER Central Solenoid must have sufficiently high electrical and structural strength. Design efforts to bring stresses in the turn and layer insulation within allowables failed. It turned out to be impossible to eliminate high local tensile stresses in the winding pack. When high local stresses can not be designed out, the qualification procedure requires verification of the acceptable structural and electrical strength by testing. We built two 4x4 arrays of the conductor jacket with two options of the CS insulation and subjected the arrays to 1.2 million compressive cycles at 60 MPa and at 76 K. Such conditions simulated stresses in the CS insulation. We performed voltage withstand tests and after end of cycling we measured the breakdown voltages between in the arrays. After that we dissectioned the arrays and studied micro cracks in the insulation. We report details of the specimens preparation, test procedures and test results.

Martovetsky, Nicolai N [ORNL] [ORNL; Mann Jr, Thomas Latta [ORNL] [ORNL; Miller, John L [ORNL] [ORNL; Freudenberg, Kevin D [ORNL] [ORNL; Reed, Richard P [Cryogenic Materials, Inc.] [Cryogenic Materials, Inc.; Walsh, Robert P [Florida State University] [Florida State University; McColskey, J D [National Institute of Standards and Technology (NIST), Boulder] [National Institute of Standards and Technology (NIST), Boulder; Evans, D [Advanced Cryogenic Materials] [Advanced Cryogenic Materials

2010-01-01T23:59:59.000Z

150

ITER CENTRAL SOLENOID COIL INSULATION QUALIFICATION  

SciTech Connect

An insulation system for ITER Central Solenoid must have sufficiently high electrical and structural strength. Design efforts to bring stresses in the turn and layer insulation within allowables failed. It turned out to be impossible to eliminate high local tensile stresses in the winding pack. When high local stresses can not be designed out, the qualification procedure requires verification of the acceptable structural and electrical strength by testing. We built two 4 x 4 arrays of the conductor jacket with two options of the CS insulation and subjected the arrays to 1.2 million compressive cycles at 60 MPa and at 76 K. Such conditions simulated stresses in the CS insulation. We performed voltage withstand tests and after end of cycling we measured the breakdown voltages between in the arrays. After that we dissectioned the arrays and studied micro cracks in the insulation. We report details of the specimens preparation, test procedures and test results.

Martovetsky, N N; Mann, T L; Miller, J R; Freudenberg, K D; Reed, R P; Walsh, R P; McColskey, J D; Evans, D

2009-06-11T23:59:59.000Z

151

Alpha Heating in ITER L-mode and H-mode Plasma  

SciTech Connect

There are many uses of predictions of ITER plasma performance. One is assessing requirements of different plasma regimes. For instance, what current drive and control are needed for steady state. The heating, current drive, and torque systems planned for initial DT operation are negative ion neutral beam injection (NB), ion cyclotron resonance (IC), and electron cyclotron resonance (EC). Which combinations of heating are optimal. What are benefits of the torques, current drive, and fueling using NB. What are the shine-through power and optimum voltage for the NB? What are optimal locations and aiming of the EC launchers? Another application is nuclear licensing (e.g. System integrity, how many neutrons).

R.V. Budny

2011-07-18T23:59:59.000Z

152

A.C.C. Sips, Advanced scenarios for ITER operation ICPP 2004 Advanced scenarios for ITER operation  

E-Print Network (OSTI)

of fusion energy. ITER is to produce and study plasmas dominated by self heating. This would give unique@ipp.mpg.de Abstract In thermonuclear fusion research using magnetic confinement, the tokamak is the leading candidate to provide a #12;A.C.C. Sips, Advanced scenarios for ITER operation ICPP 2004 2 better understanding, control

Paris-Sud XI, Université de

153

Concept development for the ITER equatorial port visible/infrared wide angle viewing system  

SciTech Connect

The ITER equatorial port visible/infrared wide angle viewing system concept is developed from the measurement requirements. The proposed solution situates 4 viewing systems in the equatorial ports 3, 9, 12, and 17 with 4 views each (looking at the upper target, the inner divertor, and tangentially left and right). This gives sufficient coverage. The spatial resolution of the divertor system is 2 times higher than the other views. For compensation of vacuum-vessel movements, an optical hinge concept is proposed. Compactness and low neutron streaming is achieved by orienting port plug doglegs horizontally. Calibration methods, risks, and R and D topics are outlined.

Reichle, R.; Beaumont, B.; Boilson, D.; Bouhamou, R.; Direz, M.-F.; Encheva, A.; Henderson, M.; Kazarian, F.; Lamalle, Ph.; Lisgo, S.; Mitteau, R.; Patel, K. M.; Pitcher, C. S.; Pitts, R. A.; Prakash, A.; Raffray, R.; Schunke, B.; Snipes, J.; Diaz, A. Suarez; Udintsev, V. S. [ITER Organization, Route de Vinon-sur-Verdon, 13115 St Paul-lez-Durance (France); and others

2012-10-15T23:59:59.000Z

154

The ITER-FEAT power supply system and interface with the site HV power grid  

Science Journals Connector (OSTI)

The paper deals with the coil power supplies for ITER-FEAT and focuses on the topics related to their interface with the HV grid, which provides the required pulsed electric power. The availability of a suitable HV grid is assumed. The technical solutions addressed to the limitation of the reactive power consumption are described along with the means for reactive power compensation and active power shedding. The adaptation of the power supply reference design to a site supplied by a HV grid, with capabilities lower than the site assumptions, is discussed.

A. Roshal; B. Bareyt; I. Benfatto; N. Britousov; D. Hrabal; K. Krueger; A. Maschio; P.L. Mondino; T. Shoji

2001-01-01T23:59:59.000Z

155

A E Costley, US/ITER Town meeting, San Diego, 22 April 2004 N 55 IP 57 04-04-30 F 1 International Thermonuclear Experimental Reactor  

E-Print Network (OSTI)

for the integration have been developed and the interfaces with the re to their anticipated operational role (machine protection, control and physics studies). About 45 parameters in total). These are included in the highest level ITER design requirement document (DRG 1). · For each parameter

156

RF heating needs and plans for ITER  

SciTech Connect

RF heating systems are required to deliver more than half of the total auxiliary power to operate ITER successfully through the different levels. To achieve this goal, systems in the range of ICRF, LHF and ECRF will be implemented for different tasks in different phases of operation. Power levels proposed to be used in different ranges will vary depending on the needs. Different mixes of power will depend on the physics needs of the experimental programmes. Lower Hybrid power of 20 MW at 5.0 GHz is not planned for the startup phase and therefore no procurement scheme exists at the present time. 20 MW will be delivered into the plasma at 40 to 55 MHz as well as at 170 GHz with the help of Ion Cyclotron Heating (ICH) and Electron Cyclotron Heating (ECH) systems respectively. All the heating systems will have the capability to operate in continuous mode. A dedicated ECH 3.0 MW system at 127.6 GHz will be used for plasma breakdown and start up.

Bora, Dhiraj; Beaumont, B.; Kobayashi, N.; Tanga, A. [ITER Organization, Joint Work Site, Cadarache (France); Goulding, R.; Swain, D. [Oak Ridge National Laboratory (United States); Jacquinot, J. [Cabinet of High Commissioner for Atomic Energy, CEA Gif-sur-Yvette (France)

2007-09-28T23:59:59.000Z

157

United States and International Partners Initial ITER Agreement |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

International Partners Initial ITER Agreement International Partners Initial ITER Agreement United States and International Partners Initial ITER Agreement May 24, 2006 - 10:48am Addthis Paves the Way for Large-Scale, Clean Fusion Energy Project BRUSSELS, BELGIUM - Representing the United States, Dr. Raymond L. Orbach, Director of the U.S. Department of Energy's (DOE) Office of Science, joined counterparts from China, the European Union, India, Japan, the Republic of Korea, and the Russian Federation today to initial an agreement to construct ITER, an international fusion energy project. Fusion energy is an important component of President Bush's Advanced Energy Initiative (AEI), given fusion's potential to become an attractive long-range option for the U.S. clean energy portfolio. In FY 2006, DOE allocated $25

158

PPPL's Rich Hawryluk recognized for service to ITER international...  

NLE Websites -- All DOE Office Websites (Extended Search)

experiment that is under construction in France. Hawryluk, a former deputy director of PPPL, completed a two-year assignment at ITER in April, 2013. The Secretary of Energy's...

159

1 10/17/2013 US ITER Project  

E-Print Network (OSTI)

1 10/17/2013 US ITER Project CS Magnets and TF Conductor Wayne Reiersen WBS Team Leader, PPPL Neumeyer WBS Team Leader, PPPL Diagnostics David Johnson WBS Team Leader, PPPL Standard Vacuum Components

160

PPPL3246 Preprint: April 1997, UC420 THE PHYSICS ROLE OF ITER  

E-Print Network (OSTI)

­scale plasma physics research. First and foremost, experiments in ITER will explore ``controlled ignition

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
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161

Design of the ITER First Wall and Blanket A. Rene Raffray  

E-Print Network (OSTI)

Design of the ITER First Wall and Blanket A. Rene Raffray TKM, Internal Components Division ITER-mail: mario.merola@iter.org Abstract--This paper summarizes the status of the ITER blanket system design and describes some of the key R&D activities in support of the design with the goal of starting procurement

Raffray, A. René

162

ITER: The International Thermonuclear Experimental Reactor and the Nuclear Weapons Proliferation  

E-Print Network (OSTI)

militarytechnical reasons and implications of the very probable siting of ITER (the International Thermonuclear

André Gsponer; Jean-pierre Hurni

2004-01-01T23:59:59.000Z

163

Numerical simulations of welds of thick steel pieces of interest for the thermonuclear fusion ITER machine  

E-Print Network (OSTI)

Numerical simulations of welds of thick steel pieces of interest for the thermonuclear fusion ITER machine

Carmignani, B

2005-01-01T23:59:59.000Z

164

Differential and integral enthalpies of solution of akermanite and pseudo-wollastonite in the melts of the system Ca2MgSi2O7?CaSiO3. Isoplethal enthalpies in this system  

Science Journals Connector (OSTI)

It was found that the enthalpy of mixing at formation of the melts in the Ca2MgSi2O7?CaSiO3 system from melts of Ca2MgSi2O7 and CaSiO3 is zero within the temperature limits from 1673 to 1930 K. Consequently, the differential and integral heats of solution of akermanite and pseudo-wollastonite in the melts of this system are equal to their heats of fusion at the corresponding temperature. Using the non-isothermal Hess law and the phase diagram, isoplethal enthalpies were calculated in this system within the temperature range from 298 to 1920 K. The enthalpy and entropy of crystallization for the eutectic melt at the eutectic temperature Te = 1673 K was determined to be ?crystH(eut. melt, Te) = (? 78.3 +- 2.4) J mol?1 and ?crystS(eut. melt, Te) = (?46.8 +- 1.4) J mol?1 K?1, respectively.

I Nerád; K Adamkovic?ová; L Kosa; J Strec?ko; I Proks

1996-01-01T23:59:59.000Z

165

DIII-D Research in Support of ITER  

SciTech Connect

DIII-D research is providing key information for the design and operation of ITER. Discharges that simulate ITER operating scenarios in conventional H-mode, advanced inductive, hybrid, and steady state regimes have achieved normalized performance consistent with ITER's goals for fusion performance. Stationary discharges with high {beta}{sub N} and 90% noninductive current that project to Q=5 in ITER have been sustained for a current relaxation time ({approx}2.5 s), and high-beta wall-stabilized discharges with fully non-inductive current drive have been sustained for more than one second. Detailed issues of plasma control have been addressed, including the development of a new large-bore startup scenario for ITER. A broad research program provides the physics basis for predicting the performance of ITER. Recent key results include the discovery that the L-H power threshold is reduced with low neutral beam torque, and the development of a successful model for prediction of the H-mode pedestal height in DIII-D. Research areas with the potential to improve ITER's performance include the demonstration of ELM-free 'QH-mode' discharges with both co and counter-injection, and validation of the predicted torque generated by static, non-axisymmetric magnetic fields. New diagnostics provide detailed benchmarking of turbulent transport codes and direct measurements of the anomalous transport of fast ions by Alfven instabilities. DIII-D research also contributes to the basis for reliable operation in ITER, through active control of the chief performance-limiting instabilities. Recently, ELM suppression with resonant magnetic perturbations has been demonstrated at collisionality similar to ITER's, while simultaneous stabilization of NTMs (by localized current drive) and RWMs (by magnetic feedback) has allowed stable operation at high beta and low rotation. In research aimed at improving the lifetime of material surfaces near the plasma, recent experiments have investigated several approaches to mitigation of disruptions, including injection of low-Z gas and low-Z pellets, and have shown the conditions that minimize core impurity accumulation during radiative divertor operation. Investigation of carbon erosion, transport, and co-deposition with hydrogenic species, and methods for the removal of co-deposits, will contribute to the physics basis for initial operation of ITER with a carbon divertor.

Strait, E

2008-10-14T23:59:59.000Z

166

Improving DWF Simulations: the Force Gradient Integrator and the Möbius Accelerated DWF Solver  

E-Print Network (OSTI)

We have implemented a variant of the force gradient integrator proposed by Kennedy et.al. and are using it in our production 2+1 flavor DWF simulations with pion masses of 180 MeV in (4.5fm)3 volumes. We find modest speed-ups (\\sim 20%) from using the force gradient integrator, compared to our previously used Omelyan integrator. On other ensembles, primarily finite temperature 2+1 flavor DWF QCD, we have extensively tuned the Hasenbusch preconditioning masses and achieved speed-ups of 2-3x. Here we have also switched to the force gradient integrator, but this change has not had any impact on the speed. We also report on an improved solver for DWF, which uses M\\"obius fermions, with a smaller fifth dimension than the original DWF fermions, as an intermediate step in the generation of solutions of the Dirac equation. This approach cuts the number of effective Dirac applications by approximately a factor of 2 when the conjugate gradient iteration count is large.

Hantao Yin; Robert D. Mawhinney

2011-11-21T23:59:59.000Z

167

Robust parallel iterative solvers for linear and least-squares problems, Final Technical Report  

SciTech Connect

The primary goal of this project is to study and develop robust iterative methods for solving linear systems of equations and least squares systems. The focus of the Minnesota team is on algorithms development, robustness issues, and on tests and validation of the methods on realistic problems. 1. The project begun with an investigation on how to practically update a preconditioner obtained from an ILU-type factorization, when the coefficient matrix changes. 2. We investigated strategies to improve robustness in parallel preconditioners in a specific case of a PDE with discontinuous coefficients. 3. We explored ways to adapt standard preconditioners for solving linear systems arising from the Helmholtz equation. These are often difficult linear systems to solve by iterative methods. 4. We have also worked on purely theoretical issues related to the analysis of Krylov subspace methods for linear systems. 5. We developed an effective strategy for performing ILU factorizations for the case when the matrix is highly indefinite. The strategy uses shifting in some optimal way. The method was extended to the solution of Helmholtz equations by using complex shifts, yielding very good results in many cases. 6. We addressed the difficult problem of preconditioning sparse systems of equations on GPUs. 7. A by-product of the above work is a software package consisting of an iterative solver library for GPUs based on CUDA. This was made publicly available. It was the first such library that offers complete iterative solvers for GPUs. 8. We considered another form of ILU which blends coarsening techniques from Multigrid with algebraic multilevel methods. 9. We have released a new version on our parallel solver - called pARMS [new version is version 3]. As part of this we have tested the code in complex settings - including the solution of Maxwell and Helmholtz equations and for a problem of crystal growth.10. As an application of polynomial preconditioning we considered the problem of evaluating f(A)v which arises in statistical sampling. 11. As an application to the methods we developed, we tackled the problem of computing the diagonal of the inverse of a matrix. This arises in statistical applications as well as in many applications in physics. We explored probing methods as well as domain-decomposition type methods. 12. A collaboration with researchers from Toulouse, France, considered the important problem of computing the Schur complement in a domain-decomposition approach. 13. We explored new ways of preconditioning linear systems, based on low-rank approximations.

Saad, Yousef

2014-01-16T23:59:59.000Z

168

Integrated Deployment | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Integrated Deployment Integrated Deployment Integrated Deployment Integrated technology deployment uses a comprehensive approach to implement a variety of efficiency and renewable energy technology solutions in communities and cities, federal agencies, international locations, and states and territories. need_alt Community Renewable Energy Deployment Webinars Hear about successful community renewable energy projects, including the challenges and barriers faced during development. Learn more Integrated Deployment Projects The following projects provide examples of how the U.S. Department of Energy (DOE) and the National Renewable Energy Laboratory have used an integrated approach to address various location-specific energy challenges that is both scalable and replicable around the world:

169

Application of functional transformations in the solution of steady-state distillation problems  

E-Print Network (OSTI)

of Criteria Calculational Procedure and Discussion 117 118 121 B QUADRATIC CONVERGENCE OF ITERATES USING FUNCTIONIAL TRANSFORMATION IMBEDDED IN NEWTON"S MLTHOD 127 C FORMULATION OF MATHEMATICAL MODELS USED IN THE EXAMPI. E PROBLEMS Problem 1 ? A... 7). Comparison of initial (iterate) vapor rate of nCcH?at each stage ivith the steady-state solution vapor rate of nCcHis at each stage for Lx =50 lb-moles/min (Examp)e 7). 30 54 55 10. ]2. 13. Comparison of initial (iterate) temperature...

McLaughlin, Blaise Edward

2012-06-07T23:59:59.000Z

170

Various Boussinesq solitary wave solutions  

SciTech Connect

The generalized Boussinesq (gB) equations have been used to model nonlinear wave evolution over variable topography and wave interactions with structures. Like the KdV equation, the gB equations support a solitary wave solution which propagates without changing shape, and this solitary wave is often used as a primary test case for numerical studies of nonlinear waves using either the gB or other model equations. Nine different approximate solutions of the generalized Boussinesq equations are presented with simple closed form expressions for the wave elevation and wave speed. Each approximates the free propagation of a single solitary wave, and eight of these solutions are newly obtained. The author compares these solutions with the well known KdV solution, Rayleigh`s solution, Laitone`s higher order solution, and ``exact`` numerical integration of the gB equations. Existing experimental data on solitary wave shape and wave speed are compared with these models.

Yates, G.T. [Univ. of Hong Kong (Hong Kong). Dept. of Mechanical Engineering

1995-12-31T23:59:59.000Z

171

Integrable Quantum Computation  

E-Print Network (OSTI)

Integrable quantum computation is defined as quantum computing via the integrable condition, in which two-qubit gates are either nontrivial unitary solutions of the Yang--Baxter equation or the Swap gate (permutation). To make the definition clear, in this article, we explore the physics underlying the quantum circuit model, and then present a unified description on both quantum computing via the Bethe ansatz and quantum computing via the Yang--Baxter equation.

Yong Zhang

2011-11-16T23:59:59.000Z

172

Extended solution space for Chern-Simons gravity: The slowly rotating Kerr black hole  

SciTech Connect

In the Einstein-Cartan formulation, an iterative procedure to find solutions in nondynamical Chern-Simons gravity in vacuum is proposed. The iterations, in powers of a small parameter {beta} which codifies the Chern-Simons coupling, start from an arbitrary torsionless solution of Einstein equations. With Schwarzschild as the zeroth-order choice, we derive a second-order differential equation for the O({beta}) corrections to the metric, for an arbitrary zeroth-order embedding parameter. In particular, the slowly rotating Kerr metric is an O({beta}) solution in either the canonical or the axial embeddings.

Cambiaso, Mauro [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, 04510 Mexico Distrito Federal (Mexico); Departamento de Ciencias Fisicas, Universidad Andres Bello, Republica 220, Santiago (Chile); Urrutia, Luis F. [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, 04510 Mexico Distrito Federal (Mexico)

2010-11-15T23:59:59.000Z

173

Extended solution space for Chern-Simons gravity: The slowly rotating Kerr black hole  

Science Journals Connector (OSTI)

In the Einstein-Cartan formulation, an iterative procedure to find solutions in nondynamical Chern-Simons gravity in vacuum is proposed. The iterations, in powers of a small parameter ? which codifies the Chern-Simons coupling, start from an arbitrary torsionless solution of Einstein equations. With Schwarzschild as the zeroth-order choice, we derive a second-order differential equation for the O(?) corrections to the metric, for an arbitrary zeroth-order embedding parameter. In particular, the slowly rotating Kerr metric is an O(?) solution in either the canonical or the axial embeddings.

Mauro Cambiaso and Luis F. Urrutia

2010-11-18T23:59:59.000Z

174

Independent Activity Report, Washington River Protection Solutions -  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Washington River Protection Solutions Washington River Protection Solutions - September 2010 Independent Activity Report, Washington River Protection Solutions - September 2010 September 2010 Participation in the Washington River Protection Solutions, LLC Integrated Safety Management System Annual Review The U.S. Department of Energy, Office of Independent Oversight, within the Office of Health, Safety and Security (HSS), participated in the review of the Washington River Protection Solutions, LLC Integrated Safety Management System Annual Review for 2010. The review was conducted during the period of August 23 to September 2, 2010, and focused on six functional areas: corrective action management, work planning and control, radiological protection, environmental protection, emergency preparedness, and

175

Integrated Solar Panel Antennas for Cube Satellites.  

E-Print Network (OSTI)

??This thesis work presents an innovative solution for small satellite antennas by integrating slot antennas and solar cells on the same panel to save small… (more)

Mahmoud, Mahmoud N.

2010-01-01T23:59:59.000Z

176

President Bush Issues Executive Order Designating ITER International Fusion  

NLE Websites -- All DOE Office Websites (Extended Search)

President President Bush Issues Executive Order Designating ITER International Fusion Energy Organization A Public Interest Organization News Featured Articles Science Headlines 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 Presentations & Testimony News Archives Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 11.19.07 President Bush Issues Executive Order Designating ITER International Fusion Energy Organization A Public Interest Organization Print Text Size: A A A Subscribe FeedbackShare Page November 19, 2007 The White House today announced that President Bush has issued an Executive Order designating the ITER International Fusion Energy Organization as a public international organization. For the purposes of the International

177

Is Carbon a Realistic Choice for ITER's Divertor?  

SciTech Connect

Tritium retention by co-deposition with carbon on the divertor target plate is predicted to limit ITER's DT burning plasma operations (e.g. to about 100 pulses for the worst conditions) before the in-vessel tritium inventory limit, currently set at 350 g, is reached. At this point, ITER will only be able to continue its burning plasma program if technology is available that is capable of rapidly removing large quantities of tritium from the vessel with over 90% efficiency. The removal rate required is four orders of magnitude faster than that demonstrated in current tokamaks. Eighteen years after the observation of co-deposition on JET and TFTR, such technology is nowhere in sight. The inexorable conclusion is that either a major initiative in tritium removal should be funded or that research priorities for ITER should focus on metal alternatives.

C.H. Skinner; G. Federici

2005-05-13T23:59:59.000Z

178

Tooling concepts for ITER tokamak assembly and remote disassembly  

SciTech Connect

Since ITER has many of the characteristics of a full-scale tokamak reactor, its provisions for assembly and replaceability are relevant to a future fusion power plant. The performance of ITER is dependent on tight tolerances, mainly for the magnets and plasma facing components. The magnetic field must be highly uniform in the toroidal direction to ensure good plasma energy and particle confinement. Alignment of the plasma facing surface of the first wall and divertor target plates is required to avoid large local heat loads on the plasma facing components and, as a consequence, their erosion and contamination of the plasma with impurities. Because of the large and heavy components the major challenge of the ITER tokamak assembly is to hold such tight tolerances using guide tools, adjustable interfaces, accurate measuring tools, and specific procedures to compensate for deformation and fabrication tolerances. The assembly tooling plan also includes verification of the essential remote handling operations.

Oikawa, A.; Puhn, F.; Helary, J.L.; Shaw, R.; Friend, M.; Piec, Z.; Tachikawa, N.; Acks, M.; Basile, A.

1995-12-31T23:59:59.000Z

179

Iterative methods for solving nonlinear problems of nuclear reactor criticality  

SciTech Connect

The paper presents iterative methods for calculating the neutron flux distribution in nonlinear problems of nuclear reactor criticality. Algorithms for solving equations for variations in the neutron flux are considered. Convergence of the iterative processes is studied for two nonlinear problems in which macroscopic interaction cross sections are functionals of the spatial neutron distribution. In the first problem, the neutron flux distribution depends on the water coolant density, and in the second one, it depends on the fuel temperature. Simple relationships connecting the vapor content and the temperature with the neutron flux are used.

Kuz'min, A. M., E-mail: mephi.kam@mail.ru [National Research Nuclear University MEPhI (Russian Federation)

2012-12-15T23:59:59.000Z

180

Iterative reconstruction of the detector response for medical gamma cameras  

E-Print Network (OSTI)

Statistical event reconstruction techniques can give better results for gamma cameras than the traditional centroid method. However, implementation of such techniques requires detailed knowledge of the PMT light response functions. Here we describe an iterative technique which allows to obtain the response functions from flood irradiation data without imposing strict requirements on the spatial uniformity of the event distribution. A successful application of the technique for medical gamma cameras is demonstrated using both simulated and experimental data. We show that this technique can be used for monitoring of the photomultiplier gain variations. An implementation of the iterative reconstruction technique capable of operating in real-time is also presented.

Morozov, A; Alves, F; Domingos, V; Martins, R; Neves, F; Chepel, V

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Modeling of Hydrogen Line Shapes for the Diagnostic of ITER  

SciTech Connect

The state of art of the line shape modeling techniques involved in tokamak edge plasma spectroscopy is reported, in the context of the preparation for ITER. Hydrogen spectra are calculated assuming a line-of-sight crossing a 2D-plasma background obtained from numerical simulations. The Doppler, Zeeman and Stark effects are retained. Ion dynamics effects are accounted for by using the numerical simulation method. The possibility for a line shape-based diagnostic of the ITER divertor plasma is examined through fittings of simulated spectra and comparison with the input plasma fields.

Rosato, J.; Capes, H.; Godbert-Mouret, L.; Koubiti, M.; Marandet, Y.; Stamm, R. [PIIM, UMR 6633 Universite de Provence / CNRS, Centre de St-Jerome, Case 232, F-13397 Marseille Cedex 20 (France); Kotov, V.; Reiter, D. [IEF-Plasmaphysik, Forschungszentrum Juelich GmbH, Euratom Association, Trilateral Euregio Cluster, D-52425 Juelich (Germany)

2010-10-29T23:59:59.000Z

182

STELLOPT Modeling of the 3D Diagnostic Response in ITER  

SciTech Connect

The ITER three dimensional diagnostic response to an n=3 resonant magnetic perturbation is modeled using the STELLOPT code. The in-vessel coils apply a resonant magnetic perturbation (RMP) fi eld which generates a 4 cm edge displacement from axisymmetry as modeled by the VMEC 3D equilibrium code. Forward modeling of flux loop and magnetic probe response with the DIAGNO code indicates up to 20 % changes in measured plasma signals. Simulated LIDAR measurements of electron temperature indicate 2 cm shifts on the low field side of the plasma. This suggests that the ITER diagnostic will be able to diagnose the 3D structure of the equilibria.

Lazerson, Samuel A

2013-05-07T23:59:59.000Z

183

State and Local Solution Center: Financing Solutions  

NLE Websites -- All DOE Office Websites (Extended Search)

Technical Assistance Technical Assistance Resources Printable Version Share this resource Send a link to State and Local Solution Center: Financing Solutions to someone by E-mail Share State and Local Solution Center: Financing Solutions on Facebook Tweet about State and Local Solution Center: Financing Solutions on Twitter Bookmark State and Local Solution Center: Financing Solutions on Google Bookmark State and Local Solution Center: Financing Solutions on Delicious Rank State and Local Solution Center: Financing Solutions on Digg Find More places to share State and Local Solution Center: Financing Solutions on AddThis.com... Strategic Energy Planning Energy Policies & Programs Financing Financing Overview Financing Program Market Segments Energy Data Management Energy Technologies

184

An Empirical Study on Integrating Agile and User Centered Design  

E-Print Network (OSTI)

challenges. Agile Software Development Processes; User Centred Design; Agile User Centred Design Integration 1. INTRODUCTION Agile methods are lightweight software development methods that tackle perceived. They are iterative and are used to develop software incrementally. Different Agile processes implement these ideas

Cairns, Paul

185

Brussels advocates a lone rider for ITER 09/22/2004 Edition  

E-Print Network (OSTI)

can advance alone to establish the thermonuclear reactor experimental ITER in Cadarache. France in the construction of the future experimental thermonuclear reactor ITER, if Brussels does not manage to convince

186

Iterative improvement to solve the parcel hub scheduling problem  

Science Journals Connector (OSTI)

This paper presents iterative improvement algorithms to solve the parcel hub scheduling problem (PHSP). The PHSP is combinatorial optimization problem that consists of scheduling a set of inbound trailers to a small number of unload docks. At the unload ... Keywords: Cross docks, Genetic algorithms, Local search, Parcel delivery industry, Simulated annealing

Douglas L. McWilliams

2010-08-01T23:59:59.000Z

187

Basic Process Algebra with Iteration: Completeness of its Equational Axioms  

E-Print Network (OSTI)

& Ponse [BBP93] incorporated the binary Kleene star into Basic Process Algebra (BPA), and called it single exit iteration (SEI). They suggested three axioms SEI1­3 for BPA \\Lambda , where axiom SEI1 is the one­3, together with the axioms A1­5 for BPA, form a complete axiomatisation for BPA \\Lambda with respect

Utrecht, Universiteit

188

About the Limiting Behaviour of Iterated Robust Morphological Operators  

E-Print Network (OSTI)

Guanajuato, Gto., Mexico horebeek@cimat.mx 2 Freie Universitat Berlin, Institut fur Informatik Tacostr. 9 of morphological operators. To this purpose, we describe the implied iterative process by a discrete dynamical morphology is an important branch of non-linear signal process- ing. It has its roots in discrete geometry

Van Horebeek, Johan

189

ACCELERATED SPATIO-TEMPORAL WAVELET TRANSFORMS: AN ITERATIVE TRAJECTORY ESTIMATION. *  

E-Print Network (OSTI)

ACCELERATED SPATIO-TEMPORAL WAVELET TRANSFORMS: AN ITERATIVE TRAJECTORY ESTIMATION. * Jean accelerated motion in spatio-temporal discrete sig- nals. It is assumed that the digital signals of inter- est, they contain all the orders of acceleration. The purpose of this work is to estimate the trajectory

Wickerhauser, M. Victor

190

ICRF scenarios for ITER's half-field phase  

SciTech Connect

The non-active operation phase of ITER will be done in H and {sup 4}He plasmas at half the nominal magnetic field, B{sub 0} = 2.65T. At this field and for the given frequency range of the ICRF system (f = 40-55MHz), three ICRF heating scenarios are available a priori: (i) Fundamental ICRH of majority H plasmas at f{approx_equal}40MHz,(ii) second harmonic (N= 2) {sup 3}He ICRH in H plasmas at f{approx_equal}53MHz and (iii) fundamental minority H heating in {sup 4}He plasmas at f{approx_equal}40MHz. While the latter is expected to perform well for not too large H concentrations, the heating scenarios available for the Hydrogen plasmas are less robust. Recent JET experiments performed in similar conditions to those expected in ITER's half-field phase confirmed the low performance of these two scenarios and numerical simulations have shown that the situation is not much improved in ITER, mainly because of the rather modest plasma temperature and density expected in its initial operation phase. A summary of the main experimental results obtained at JET followed by numerical predictions for ITER's half-field ICRF heating scenarios will be presented.

Lerche, E.; Van Eester, D.; Ongena, J. [LPP-ERM/KMS, Association Euratom-'Belgian State', TEC Partner, Brussels (Belgium); Mayoral, M.-L.; Giroud, C.; Jacquet, P.; Kiptily, V. [Euratom-CCFE Fusion Association, Culham Science Centre (United Kingdom); Johnson, T.; Hellsten, T. [Fusion Plasma Physics, Association Euratom-VR, KTH, Stockholm (Sweden); Bilato, R. [IPP (MPI)-Euratom Association, Garching (Germany); Czarnecka, A. [Institute of Plasma Physics and Laser Microfusion, Warsaw (Poland); Dumont, R. [CEA (IRFM)-Euratom Association, Saint-Paul-lez-Durance (France); Krasilnikov, A. [SRC RF Troitsk Institute for Innovating and Fusion Research, Troitsk (Russian Federation); Maslov, M. [Centre de Recherches en Physique des Plasmas, Association EURATOM - Suisse, Lausanne (Switzerland); Vdovin, V. [RNC Kurchatov Institute, Nuclear Fusion Institute, Moscow (Russian Federation)

2011-12-23T23:59:59.000Z

191

ACCELERATING REGULARIZED ITERATIVE CT RECONSTRUCTION ON COMMODITY GRAPHICS HARDWARE (GPU)  

E-Print Network (OSTI)

overhead to very moderate levels. Index Terms-- Iterative Reconstruction, Computed Tomography, Ordered Klaus Mueller Center for Visual Computing, Computer Science Department, Stony Brook University ABSTRACT) is the overall theme in many efforts to lower these exposures. Effective methods here include limiting either

Mueller, Klaus

192

PTRANSP Tests of TGLF and Predictions for ITER  

SciTech Connect

A new numerical solver for stiff transport predictions has been developed and implemented in the PTRANSP predictive transport code. The TGLF and GLF23 predictive codes have been incorporated in the solver, verified by comparisons with predictions from the XPTOR code, and validated by comparing predicted and measured profiles. Predictions for ITER baseline plasmas are presented.

Robert V. Budny, Xingqiu Yuan, S. Jardin, G. Hammett, G. Staebler, J. Kinsey, members of the ITPA Transport and Confinement Topical Group, and JET EFDA Contributors

2012-09-23T23:59:59.000Z

193

Japan rejects EU ITER deal 02 February 2005  

E-Print Network (OSTI)

News Japan rejects EU ITER deal 02 February 2005 An offer from the EU for Japan to drop its bid preferential issuance of orders to Japanese companies. Japan had previously proposed to issue about $Y57 authority to issue orders to Japanese firms and a distinct difference between the two proposals. Japan

194

PPPL-3246 -Preprint: April 1997, UC-420 THE PHYSICS ROLE OF ITER  

E-Print Network (OSTI)

. INTRODUCTION The ITER plasma will provide a unique opportunity for reactor-scale plasma physics research. First

195

Thermomechanical Performance of the EU TBMs Under a Typical ITER Transient  

Science Journals Connector (OSTI)

ITER Systems / Proceedings of the Nineteenth Topical Meeting on the Technology of Fusion Energy (TOFE) (Part 1)

F. Cismondi; G. Aiello; S. Kecskes; G. Rampal

196

Joint News Release CHINA AND THE U.S. JOIN ITER NEGOTIATIONS  

E-Print Network (OSTI)

to the importance of ITER both in the Summit meeting with President Putin and in his speech at the Kurchatov

197

High Heat Flux Test of the KO Standard Mockups for ITER First Wall Semi-Prototype  

Science Journals Connector (OSTI)

ITER Systems / Proceedings of the Nineteenth Topical Meeting on the Technology of Fusion Energy (TOFE) (Part 1)

Suk-Kwon Kim et al.

198

A spatial multigrid iterative method for two-dimensional discrete-ordinates transport problems  

E-Print Network (OSTI)

One example of a preconditioned, iterative transport method is Diffusion Synthetic Acceleration (DSA). DSA begins with one transport sweep, or source iteration, identical to Eq. (1.12) for an intermediate angular flux iteration. This intermediate... to compute the next scattering source, Eq. (1.16), to be substituted back into Eq. (1.12): ()() ( ) () ( ) ( )11/21nn n++ +x. (1.16) The superiority of DSA over source iteration is made very clear by the Fourier analysis of the homogeneous, infinite...

Lansrud, Brian David

2005-08-29T23:59:59.000Z

199

An iterative technique for approximating solutions to certain differential equations by truncated Legendre series  

E-Print Network (OSTI)

in 3. 18. i, n+1 i, n -7 Fair results, functional values. of at most 10, were obtained by combining ordinary scanning and Stirling's inverse interpolation for [5] mula . The scan increment equaled . 001. The points about the changes in sign gave a... basis for the difference table used in Stirling's formula. Stirling, 's formula states f(a+xw) = f(a) + ? [ hf(a) + A(a-w)] + ? 6 f (a-w) + ~ [ 6'f(a-w) + 6'f(a-2w) ] 12 &' f(a-2 ) + 24 Since a + xw is to be a root, f(a + xw) must equal zero...

Heckrotte, Robert Platt

1964-01-01T23:59:59.000Z

200

Iteration Method for the Solution of the Eigenvalue Problem of Linear Differential and  

E-Print Network (OSTI)

memories and limited computational capabilities. The SWAC, for instance, the NBS Western Automatic Computer

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Templates for the Solution of Linear Systems: Building Blocks for Iterative Methods1  

E-Print Network (OSTI)

Cooperative Agreement No. CCR-8809615, the Applied Mathematical Sciences subprogram of the O ce of Energy of Computer Science, University of Tennessee, Knoxville, TN 37996-1301. 4 Applied Mathematics Department Department of Mathematics, Utrecht University, Utrecht, the Netherlands. #12;i This book is also available

Hammett, Greg

202

ANALYSES AND PRELIMINARY RESULTS OF AN UPDATED ITER RADIOACTIVE WASTE ASSESSMENT  

E-Print Network (OSTI)

ANALYSES AND PRELIMINARY RESULTS OF AN UPDATED ITER RADIOACTIVE WASTE ASSESSMENT S. ZHENG,a * R aimed at updating the ITER radioactive inventory assessment and assisting the waste manage- ment operations, and waste management processes and services. KEYWORDS: ITER, radioactive waste management

203

36.th EPS-CPP, June 30.th 2009 -Sofia ITER Session  

E-Print Network (OSTI)

36.th EPS-CPP, June 30.th 2009 - Sofia ITER Session F. Zonca - The FAST Proposal Associazione Tor Vergata Univ. of Catania #12;36.th EPS-CPP, June 30.th 2009 - Sofia ITER Session F. Zonca & construction #12;36.th EPS-CPP, June 30.th 2009 - Sofia ITER Session F. Zonca - The FAST Proposal Associazione

Zonca, Fulvio

204

New Solutions Require New Thinking  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Solutions Require Solutions Require New Thinking America's demand for power threatens to overburden an already congested electric system. The U.S. Department of Energy is addressing these energy challenges with innovative solutions to energy generation. Its Renewable and Distributed Systems Integration (RDSI) Program is helping to alleviate congestion, reduce greenhouse gas emissions, and improve reliability by investigating answers such as * Microgrid technologies * Distributed generation * Two-way communication systems * Demand response programs Reducing Peak Demand The RDSI program aims to reduce peak load on distribution feeders 20% by 2015. To help achieve this goal, RDSI is sponsoring demonstration projects nationwide. From California to New York, these projects are

205

Explicit solutions for a semidiscrete Boussinesq system  

Science Journals Connector (OSTI)

Abstract A semidiscrete Boussinesq system has been introduced by the means of recombination flows from a 4 × 4 spectral problem. We construct the Darboux transformation and explicit solutions for the semidiscrete Boussinesq system. We can find that the 1-fold Darboux-transformation solution of the system possesses more than one traveling waves. Especially, one of solutions comes into being two solitary waves after a period of time, which means that properties of solutions to semidiscrete integrable systems are richer than the ones in continuous integrable systems.

Tong Zhou; Zuo-nong Zhu

2014-01-01T23:59:59.000Z

206

Exact exchange potential evaluated from occupied Kohn-Sham and Hartree-Fock solutions  

SciTech Connect

The reported algorithm determines the exact exchange potential v{sub x} in an iterative way using energy shifts (ESs) and orbital shifts (OSs) obtained with finite-difference formulas from the solutions (occupied orbitals and their energies) of the Hartree-Fock-like equation and the Kohn-Sham-like equation, the former used for the initial approximation to v{sub x} and the latter for increments of ES and OS due to subsequent changes of v{sub x}. Thus, the need for solution of the differential equations for OSs, used by Kuemmel and Perdew [Phys. Rev. Lett. 90, 043004 (2003)], is bypassed. The iterated exchange potential, expressed in terms of ESs and OSs, is improved by modifying ESs at odd iteration steps and OSs at even steps. The modification formulas are related to the optimized-effective-potential equation (satisfied at convergence) written as the condition of vanishing density shift (DS). They are obtained, respectively, by enforcing its satisfaction through corrections to approximate OSs and by determining the optimal ESs that minimize the DS norm. The proposed method, successfully tested for several closed-(sub)shell atoms, from Be to Kr, within the density functional theory exchange-only approximation, proves highly efficient. The calculations using the pseudospectral method for representing orbitals give iterative sequences of approximate exchange potentials (starting with the Krieger-Li-Iafrate approximation) that rapidly approach the exact v{sub x} so that, for Ne, Ar, and Zn, the corresponding DS norm becomes less than 10{sup -6} after 13, 13, and 9 iteration steps for a given electron density. In self-consistent density calculations, orbital energies of 10{sup -4} hartree accuracy are obtained for these atoms after, respectively, 9, 12, and 12 density iteration steps, each involving just two steps of v{sub x} iteration, while the accuracy limit of 10{sup -6} to 10{sup -7} hartree is reached after 20 density iterations.

Cinal, M.; Holas, A. [Institute of Physical Chemistry of the Polish Academy of Sciences, 44/52 Kasprzaka, 01-224 Warsaw (Poland)

2011-06-15T23:59:59.000Z

207

Explicit global integrators  

E-Print Network (OSTI)

be advantageous. For this purpose, forward interpolation utilizing Radau Quadrature will be employed. An explicit method of global integration has been developed to estimate a solution to a differential equation. A set of functions P (x), P (x), , P (x) and a... set of points n+1 x , x , , x can be found such that n+1 r x n+1 f(u)du = g P. (x)i'(x. ) 0 i=1 for all x when f(u) is a polynomial of degree n or less. The above process is described by Axelsson as global integration. In . th the cases...

Merriam, Robert Stevens

2012-06-07T23:59:59.000Z

208

US ITER is a strong contributor in plan to enhance international sharing of  

NLE Websites -- All DOE Office Websites (Extended Search)

US ITER is a strong contributor in plan to enhance international sharing of US ITER is a strong contributor in plan to enhance international sharing of prime ITER real estate By Lynne Degitz, US ITER March 28, 2013 Tweet Widget Facebook Like Google Plus One PPPL's Russell Feder, left, and David Johnson developed key features for a modular approach to housing the extensive diagnostic systems that will be installed on the ITER tokamak. (Photo by Elle Starkman/PPPL Office of Communications) PPPL's Russell Feder, left, and David Johnson developed key features for a modular approach to housing the extensive diagnostic systems that will be installed on the ITER tokamak. Gallery: Diagram of an equatorial port plug shows the three vertical diagnostic shield modules with detachable first wall blocks. The modular approach has many advantages including efficient design collaboration, easier maintenance and the possibility for future upgrades to the ITER diagnostic systems.

209

Half a century of fusion research towards ITER  

Science Journals Connector (OSTI)

A review is given on plasma physics and controlled thermonuclear fusion research since the late 1950s and up to the present day. Special emphasis is given to various proposed magnetic plasma confinement systems, as well as to the research aiming at the planned International Thermonuclear Experimental Reactor (ITER) project. The latter is based on the tokamak field geometry of a strong toroidal magnetic field, combined with an inductively imposed toroidal plasma current. Experimental and theoretical research has been conducted on the fundamental problems of confinement, equilibrium, stability, plasma transport and plasma heating. During this development two milestones have been passed on the way to ITER, namely the removed threat by Bohm diffusion at the end of the 1960s, and the discovery of the High Mode at the beginning of the 1980s. Finally, some future perspectives are shortly given on this line of research.

Bo Lehnert

2013-01-01T23:59:59.000Z

210

Sawtooth control in ITER using ion cyclotron resonance heating  

SciTech Connect

Numerical modeling of the effects of ion cyclotron resonance heating (ICRH) on the stability of the internal kink mode suggests that ICRH should be considered as an essential sawtooth control tool in ITER. Sawtooth control using ICRH is achieved by directly affecting the energy of the internal kink mode rather than through modification of the magnetic shear by driving localized currents. Consequently, ICRH can be seen as complementary to the planned electron cyclotron current drive actuator, and indeed will improve the efficacy of current drive schemes. Simulations of the ICRH distribution using independent RF codes give confidence in numerical predictions that the stabilizing influence of the fusion-born alphas can be negated by appropriately tailored minority (3)He ICRH heating in ITER. Finally, the effectiveness of all sawtooth actuators is shown to increase as the q = 1 surface moves towards the manetic axis, whilst the passive stabilization arising from the alpha and NBI particles decreases.

Chapman, I. T. [EURATOM CCFE Fus Assoc, Culham Sci Ctr, Abingdon, Oxon, England; Graves, J P [Ecole Polytechnique Federale de Lausanne, Switzerland; Johnson, T. [KTH, EES, EURATOM VR Assoc., Stockholm, Sweden; Asunta, O. [Aalto University, Finland; Bonoli, P. [Massachusetts Institute of Technology (MIT); Choi, M. [General Atomics; Jaeger, E. F. [Oak Ridge National Laboratory (ORNL); Jucker, M. [Ecole Polytechnique Federale de Lausanne, Switzerland; Sauter, O. [Ecole Polytechnique Federale de Lausanne, Switzerland

2011-01-01T23:59:59.000Z

211

An integrated approach for rapid phase behavior calculations in compositional modeling  

Science Journals Connector (OSTI)

Abstract The solution of the hydrocarbon phase equilibria problem through the use of an Equation of State (EoS) requires substantial computational power due to the complexity and iterative nature of the calculations particularly when the reservoir fluid needs to be described with a significant number of components. This high CPU time demand becomes particularly acute during the execution of compositional reservoir simulations as the phase equilibria problem needs to be solved repeatedly for each discretization block and at each iteration of the non-linear solver. Solving the hydrocarbon phase equilibrium problem is often reported to consume more than 50% of the simulation?s total CPU time, thus making the speeding up of these calculations a challenge of great interest. In this work, an integrated approach is presented which utilizes classification and regression models to provide direct answers to both the phase stability and phase split problems during compositional modeling. The models are generated offline, in an automated way, once the selected EoS model is tuned and finalized and prior to setting up and running the reservoir or process simulator. First, classifiers are trained, as previously presented in the literature, utilizing the fluid?s tuned EoS model, which label the fluid?s state as stable or unstable for given feed composition, pressure and temperature. Second, regression models are generated so as to provide the prevailing reduced variables values, thus emulating the unknown closed-form solution of the Equation-of-State based reduced flash formulation. An unsupervised training technique is proposed to optimize the usage of the regression model?s learning capacity. Once the models are generated an unlimited number of compositional modeling calculations can be made during which the models developed beforehand are simply called to determine directly both the stability state of the feed and the phase split reduced variables values, if the mixture is found unstable, which, in turn, will lead to the equilibrium phases properties and molar ratios. By providing the reduced variables values instead of the full equilibrium coefficients set, the regression model expression is kept simple, thus very fast to evaluate compared to the conventional iterative algorithms. The method is applicable to any type of simulation models requiring a great number of phase behavior calculations. The proposed approach is presented in two-phase equilibria formulation although it can be directly extended to multi-phase equilibria applications. Examples demonstrate the accuracy of the calculations and the very significant performance improvement achieved with respect to currently used methods.

Vassilis Gaganis; Nikos Varotsis

2014-01-01T23:59:59.000Z

212

Improved criticality convergence via a modified Monte Carlo iteration method  

SciTech Connect

Nuclear criticality calculations with Monte Carlo codes are normally done using a power iteration method to obtain the dominant eigenfunction and eigenvalue. In the last few years it has been shown that the power iteration method can be modified to obtain the first two eigenfunctions. This modified power iteration method directly subtracts out the second eigenfunction and thus only powers out the third and higher eigenfunctions. The result is a convergence rate to the dominant eigenfunction being |k{sub 3}|/k{sub 1} instead of |k{sub 2}|/k{sub 1}. One difficulty is that the second eigenfunction contains particles of both positive and negative weights that must sum somehow to maintain the second eigenfunction. Summing negative and positive weights can be done using point detector mechanics, but this sometimes can be quite slow. We show that an approximate cancellation scheme is sufficient to accelerate the convergence to the dominant eigenfunction. A second difficulty is that for some problems the Monte Carlo implementation of the modified power method has some stability problems. We also show that a simple method deals with this in an effective, but ad hoc manner.

Booth, Thomas E [Los Alamos National Laboratory; Gubernatis, James E [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

213

Progress and present status of ITER cryoline system  

SciTech Connect

The cryoline system at ITER forms a very complex network localized inside the Tokamak building, on a dedicated plant bridge and in cryoplant areas. The cooling power produced in the cryoplant is distributed via these lines with a total length of about 3.7 km and interconnecting all the cold boxes of the cryogenic system as well as the cold boxes of various clients (magnets, cryopumps and thermal shield). Distinct layouts and polygonal geometry, nuclear safety and confinement requirements, difficult installation and in-service inspection/repair demand very high reliability and availability for the cryolines. The finalization of the building-embedded plates for supporting the lines, before the detailed design, has made this project technologically more challenging. The conceptual design phase has been completed and procurement arrangements have been signed with India, responsible for providing the system of cryolines and warm lines to ITER, as in kind contribution. The prototype test for the design and performance validation has been planned on a representative cryoline section. After describing the basic features and general layout of the ITER cryolines, the paper presents key design requirements, conceptual design approach, progress and status of the cryolines project as well as challenges to build such a complex cryoline system.

Badgujar, S.; Bonneton, M.; Chalifour, M.; Forgeas, A.; Serio, L. [ITER Organization, Route de Vinon sur Verdon, 13115 St. Paul lez Durance (France); Sarkar, B.; Shah, N. [ITER-India, Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

2014-01-29T23:59:59.000Z

214

Global dose rate assessment in ITER diagnostics ports based on the 3-D FEM ATTILA code  

Science Journals Connector (OSTI)

The USITER, through the Princeton Plasma Physics Lab (PPPL), is responsible for the delivery of several fully integrated upper, equatorial and lower port plugs dedicated for the diagnostics in ITER. Each port plug package consists of a generic port plug structure and a set of diagnostics and diagnostic housings. The shielding design of the integrated port plugs calls for maintaining a dose level not to exceed 100 ?Sv/h inside the interspace of each port; the room behind the port plug where maintenance personnel access the rear of the port. This is set as an upper target design in order to perform routine maintenance 1E6 sec (?two weeks) following shutdown. Expensive remote handling robots and tooling are required otherwise. In this paper we present results from a parametric study aimed at providing initial assessment of the attainable dose rates in the diagnostics ports and their extension areas in order to properly address the duration time and frequency for the workers to perform the scheduled maintenance. The nuclear analysis is performed using both the serial version and the distributed memory parallel (DMP) version of the ATTILA-7.1.0, 3-D FEM Discrete Ordinates code, along with the FENDL2.1/FORNAX and ANSI/ANS-6.1.1-1977 data bases.

Mahmoud Z. Youssef; Russell E. Feder

2012-01-01T23:59:59.000Z

215

ALGEBROGEOMETRIC SOLUTIONS OF THE BOUSSINESQ HIERARCHY  

E-Print Network (OSTI)

ALGEBRO­GEOMETRIC SOLUTIONS OF THE BOUSSINESQ HIERARCHY R. DICKSON, F. GESZTESY, AND K. UNTERKOFLER. Introduction The Boussinesq (Bsq) equation, u tt = u xx + 3(u 2 ) xx \\Gamma u xxxx ; (1.1) was originally­geometric quasi­periodic solutions of the completely integrable hierarchy of Boussinesq equations, of which (1

216

An Iterative Approach to Comprehensive Performance Evaluation of Integrated Services Networks \\Lambda  

E-Print Network (OSTI)

is supported in part by ONR and DARPA under contract N00014­91­C­0195 to Honeywell and Computer Science Research Projects Agency, ONR, the U.S. Government or Honeywell. cial to the overall performance

217

Accelerating Solutions  

NLE Websites -- All DOE Office Websites (Extended Search)

Solutions From vehicles on the road to the energy that powers them, Oak Ridge National Laboratory innovations are advancing American transportation. Oak Ridge National Laboratory is making an impact on everyday America by enhancing transportation choices and quality of life. Through strong collaborative partnerships with industry, ORNL research and development efforts are helping accelerate the deployment of a new generation of energy efficient vehicles powered by domestic, renewable, clean energy. EPA ultra-low sulfur diesel fuel rule ORNL and the National Renewable Energy Laboratory co-led a comprehensive research and test program to determine the effects of diesel fuel sulfur on emissions and emission control (catalyst) technology. In the course of this program, involving

218

Insolation integrator  

DOE Patents (OSTI)

An electric signal representative of the rate of insolation is integrated to determine if it is adequate for operation of a solar energy collection system.

Dougherty, John J. (Norristown, PA); Rudge, George T. (Lansdale, PA)

1980-01-01T23:59:59.000Z

219

U.S.Statements on International Fusion Reactor (ITER) Siting Decision |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

U.S.Statements on International Fusion Reactor (ITER) Siting U.S.Statements on International Fusion Reactor (ITER) Siting Decision U.S.Statements on International Fusion Reactor (ITER) Siting Decision June 28, 2005 - 1:45pm Addthis WASHINGTON, DC - Today in Moscow, Russia, the ministers representing the six ITER parties, including Dr. Raymond L. Orbach, Director of the U.S. Department of Energy's Office of Science, announced the ITER international fusion reactor will be located at the EU site in Cadarache, France. Below are statements by U.S. government officials following the signing of the agreement at the Ministerial Meeting. The text of the announcement by the six parties is available at www.iter.org/index_newsroom.htm. Statement by U.S. Secretary of Energy Samuel W. Bodman: "Plentiful, reliable energy is critical to continued worldwide economic

220

On choosing a nonlinear initial iterate for solving the 2-D 3-T heat conduction equations  

SciTech Connect

The 2-D 3-T heat conduction equations can be used to approximately describe the energy broadcast in materials and the energy swapping between electron and photon or ion. To solve the equations, a fully implicit finite volume scheme is often used as the discretization method. Because the energy diffusion and swapping coefficients have a strongly nonlinear dependence on the temperature, and some physical parameters are discontinuous across the interfaces between the materials, it is a challenge to solve the discretized nonlinear algebraic equations. Particularly, as time advances, the temperature varies so greatly in the front of energy that it is difficult to choose an effective initial iterate when the nonlinear algebraic equations are solved by an iterative method. In this paper, a method of choosing a nonlinear initial iterate is proposed for iterative solving this kind of nonlinear algebraic equations. Numerical results show the proposed initial iterate can improve the computational efficiency, and also the convergence behavior of the nonlinear iteration.

An Hengbin [High Performance Computing Center, Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China)], E-mail: an_hengbin@iapcm.ac.cn; Mo Zeyao [High Performance Computing Center, Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China)], E-mail: zeyao_mo@iapcm.ac.cn; Xu Xiaowen [High Performance Computing Center, Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China)], E-mail: xwxu@iapcm.ac.cn; Liu Xu [Graduate School of China Academy of Engineering Physics, Beijing 100088 (China)], E-mail: ninad@sohu.com

2009-05-20T23:59:59.000Z

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Analysis of the ITER LFS Reflectometer Transmission Line System  

SciTech Connect

A critical issue in the design of the ITER Low Field Side (LFS) reflectometer is the transmission line (TL) system. A TL connects each launcher to a diagnostic instrument. Each TL will typically consist of ~42 m of corrugated waveguide and up to 10 miter bends. Important issues for the performance of the TL system are mode conversion and reflections. Minimizing mode conversion and reflections in the waveguide are critical to minimizing standing waves and phase errors in the reflectometer-measured phase. The performance of the corrugated waveguide and miter bends is analyzed and recommendations given.

Hanson, Gregory R [ORNL; Wilgen, John B [ORNL; Bigelow, Tim S [ORNL; Diem, Stephanie J [ORNL; Biewer, Theodore M [ORNL

2010-01-01T23:59:59.000Z

222

FILM COOLING CALCULATIONS WITH AN ITERATIVE CONJUGATE HEAT TRANSFER APPROACH USING EMPIRICAL HEAT TRANSFER COEFFICIENT CORRECTIONS.  

E-Print Network (OSTI)

??An iterative conjugate heat transfer technique was developed and automated to predict the temperatures on film cooled surfaces such as flat plates and turbine blades.… (more)

Dhiman, Sushant

2010-01-01T23:59:59.000Z

223

Cryogenic Conduction Cooling Test of Removable Panel Mock-Up for ITER Cryostat Thermal Shield  

Science Journals Connector (OSTI)

ITER / Proceedings of the Twentieth Topical Meeting on the Technology of Fusion Energy (TOFE-2012) (Part 1), Nashville, Tennessee, August 27-31, 2012

K. Nam et al.

224

Iterative development of MobileMums: a physical activity intervention for women with young children  

Science Journals Connector (OSTI)

To describe the iterative development process and final version of ‘MobileMums’: a physical activity intervention for women with young children (mHealth) short ...

Brianna S Fjeldsoe; Yvette D Miller…

2012-12-01T23:59:59.000Z

225

Stochastic Quasi-Fejér Block-Coordinate Fixed Point Iterations with ...  

E-Print Network (OSTI)

tic quasi-Fejér monotonicity, which is thoroughly investigated. The iterative methods under con- sideration feature random sweeping rules to select the blocks of ...

2014-05-28T23:59:59.000Z

226

Optimization Online - On a self-consistent-field-like iteration for ...  

E-Print Network (OSTI)

Apr 19, 2012 ... The SCF iteration is a widely used method for solving the nonlinear eigenvalue problems arising in electronic structure calculations.

Zhang Leihong

2012-04-19T23:59:59.000Z

227

Robust iterative learning control of single-phase grid-connected inverter  

Science Journals Connector (OSTI)

For the single phase inductance-capacitance-inductance (LCL) grid-connected inverter in micro-grid, a kind of robust iterative learning controller...

Zhong-Qiang Wu; Chun-Hua Xu; Yang Yang

2014-08-01T23:59:59.000Z

228

Copper wafer bonding in three-dimensional integration  

E-Print Network (OSTI)

Three-dimensional (3D) integration, in which multiple layers of devices are stacked with high density of interconnects between the layers, offers solutions for problems when the critical dimensions in integrated circuits ...

Chen, Kuan-Neng, 1974-

2005-01-01T23:59:59.000Z

229

Chevron beam dump for ITER edge Thomson scattering system  

SciTech Connect

This paper contains the design of the beam dump for the ITER edge Thomson scattering system and mainly concerns its lifetime under the harsh thermal and electromagnetic loads as well as tight space allocation. The lifetime was estimated from the multi-pulse laser-induced damage threshold. In order to extend its lifetime, the structure of the beam dump was optimized. A number of bent sheets aligned parallel in the beam dump form a shape called a chevron which enables it to avoid the concentration of the incident laser pulse energy. The chevron beam dump is expected to withstand thermal loads due to nuclear heating, radiation from the plasma, and numerous incident laser pulses throughout the entire ITER project with a reasonable margin for the peak factor of the beam profile. Structural analysis was also carried out in case of electromagnetic loads during a disruption. Moreover, detailed issues for more accurate assessments of the beam dump's lifetime are clarified. Variation of the bi-directional reflection distribution function (BRDF) due to erosion by or contamination of neutral particles derived from the plasma is one of the most critical issues that needs to be resolved. In this paper, the BRDF was assumed, and the total amount of stray light and the absorbed laser energy profile on the beam dump were evaluated.

Yatsuka, E.; Hatae, T.; Bassan, M.; Itami, K. [Japan Atomic Energy Agency, 801-1 Mukoyama, Naka, Ibaraki 311-0193 (Japan)] [Japan Atomic Energy Agency, 801-1 Mukoyama, Naka, Ibaraki 311-0193 (Japan); Vayakis, G. [ITER Organization, 13115 St Paul Lez Durance Cedex (France)] [ITER Organization, 13115 St Paul Lez Durance Cedex (France)

2013-10-15T23:59:59.000Z

230

MHD stability of the pedestal in ITER scenarios  

Science Journals Connector (OSTI)

The linear ideal magnetohydrodynamic (MHD) limits of the pedestal in ITER scenarios associated with the preparation and realization of the nominal fusion gain Q = 10 (inductive scenario at 15 MA/5.3 T, half-field/half-current and intermediate H-mode scenario at 10 MA/3.5 T), as well as the hybrid scenario at 12 MA/5.3 T, are investigated in this work. The accessible part of the MHD stability diagram is determined by computing the bootstrap current and self-consistently evaluating the corresponding pedestal current. This procedure shows that only a small part of peeling–ballooning diagrams is physically accessible. Uncertainties about the foreseen plasma profiles motivate studies evaluating the impact of various parameters on the pedestal limits. We have addressed issues such as the pedestal width, the global performance, pressure peaking, edge current density, internal inductance and plasma shaping. A scaling law for the maximum pedestal pressure in the ITER scenarios is proposed, highlighting that the main dependences are on the plasma current, the edge safety factor, the pedestal width and the internal inductance.

P. Maget; J.-F. Artaud; M. Bécoulet; T. Casper; J. Faustin; J. Garcia; G.T.A. Huijsmans; A. Loarte; G. Saibene

2013-01-01T23:59:59.000Z

231

Notice of Intent to Issue Funding Opportunity for Integrated...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

integrate these solutions into PV power plants. SHINES projects can also focus on demand response and load management to achieve target metrics. These projects will directly...

232

Integration elements  

Science Journals Connector (OSTI)

Market-based integration is simple: Do whatever you want, the rest is up to the market. This model of the individual and its relation to others best suits the logic of the consumer society ?self-orientation an...

Dr. Eric Dieth

2011-01-01T23:59:59.000Z

233

Procurement Integrity  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

employment with certain bidders or offerors. This chapter is intended to act as a primer for all DOE employees on issues related to procurement integrity. As such, not all...

234

NREL: Energy Systems Integration - Integrated Deployment Workshop  

NLE Websites -- All DOE Office Websites (Extended Search)

Integrated Deployment Workshop Integrated Deployment Workshop The Energy Systems Integration Facility workshop, Integrated Deployment, was held August 21 - 23, 2012 at the National Renewable Energy Laboratory in Golden, Colorado. Each day of the workshop, which included a tour of the Energy Systems Integration Facility, focused on a different topic: Day 1: Utility-Scale Renewable Integration Day 2: Distribution-Level Integration Day 3: Isolated and Islanded Grid Systems The agenda and presentations from the workshop are below. Agenda Energy Systems Integration Facility Overview ESIF Technology Partnerships Integrated Deployment Model Integrated Deployment and the Energy Systems Integration Facility: Workshop Proceedings Printable Version Energy Systems Integration Home Research & Development

235

IBM and Johnson Controls Integrated  

E-Print Network (OSTI)

IBM and Johnson Controls Integrated Smarter Building Solution IBM and Johnson Controls make it simpler to reduce energy and operational costs while reducing greenhouse emissions. IBM and Johnson and more. IBM and Johnson Controls work with you to identify high-priority energy consumption areas

236

NUCLEAR MODULES OF ITER TOKAMAK SYSTEMS CODE* ain CONF-871007--68  

E-Print Network (OSTI)

NUCLEAR MODULES OF ITER TOKAMAK SYSTEMS CODE* ain CONF-871007--68 DE88 002884 Y. Gohar, C. Baker, J. Brooks, P. Finn, A. Hassanein, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, IL 60439; S Energy under Contract W-31-109 Eng-38. * · * * · · OF Tli!S CGCL'wEliT ISUNUCLEAR MODULES OF ITER

Harilal, S. S.

237

Soft-Input, Iterative, Reed-Solomon Decoding using Redundant Parity-Check Equations  

E-Print Network (OSTI)

approach to the iterative decoding of Reed-Solomon (RS) codes. The pre- sented methodology utilizesSoft-Input, Iterative, Reed-Solomon Decoding using Redundant Parity-Check Equations Jason Bellorado techniques is achievable with the presented methodology. The complexity of the proposed algorithm is orders

Kavcic, Aleksandar

238

Proposal of an Arc Detection Technique Based on RF Measurements for the ITER ICRF Antenna  

SciTech Connect

RF arc detection is a key operational and safety issue for the ICRF system on ITER. Indeed the high voltages inside the antenna put it at risk of arcing, which could cause substantial damage. This paper describes the various possibilities explored by circuit simulation and the strategy now considered to protect the ITER ICRF antenna from RF arcs.

Huygen, S.; Dumortier, P.; Durodie, F.; Messiaen, A.; Vervier, M.; Vrancken, M. [LPP/ERM-KMS, Association EURATOM-Belgian State, Brussels (Belgium); Wooldridge, E. [EURATOM/CCFE Fusion Association, Culham Science Centre (United Kingdom)

2011-12-23T23:59:59.000Z

239

SYMMETRIC ITERATED BETTI NUMBERS ERIC BABSON, ISABELLA NOVIK, AND REKHA THOMAS  

E-Print Network (OSTI)

SYMMETRIC ITERATED BETTI NUMBERS ERIC BABSON, ISABELLA NOVIK, AND REKHA THOMAS Abstract. We de#12 Betti numbers of I. We prove that for I , the Stanley-Reisner ideal of a simplicial complex , these numbers are the symmetric counterparts of the exterior iterated Betti numbers of introduced by Duval

Novik, Isabella

240

Looking on bright side of losing ITER Risa Kato and Tetsuro Yamada / Yomiuri Shimbun Staff Writers  

E-Print Network (OSTI)

to have a remote-controlled ITER experiment unit, and one for the development of super heat candidate to have a remote-control facility is of especially high significance, according to experts. The remote-control facility is envisaged as playing a key role in the ITER project, as it will be able

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

A three-dimensional adaptive method based on the iterative grid redistribution  

E-Print Network (OSTI)

such as fluid dynamics, combustion and heat transfer and others, the required density of grid pointsA three-dimensional adaptive method based on the iterative grid redistribution Desheng Wang on iterative grid redistribution technique introduced in [J. Comput. Phys. 159 (2000) 246]. The key step

Wang, Desheng

242

NESTED ITERATION AND FIRST-ORDER SYSTEM LEAST SQUARES FOR INCOMPRESSIBLE, RESISTIVE MAGNETOHYDRODYNAMICS  

E-Print Network (OSTI)

NESTED ITERATION AND FIRST-ORDER SYSTEM LEAST SQUARES FOR INCOMPRESSIBLE, RESISTIVE. This paper develops a nested iteration algorithm to solve time-dependent nonlinear systems of partial a sequence of nested spaces, where the resolution of the approximations increases as the algorithm progresses

McCormick, Steve

243

Fusion Engineering and Design 82 (2007) 22172225 Integrated thermo-fluid analysis towards helium flow  

E-Print Network (OSTI)

Fusion Engineering and Design 82 (2007) 2217­2225 Integrated thermo-fluid analysis towards helium. Andob, I. Komadab a Fusion Engineering Sciences, Mechanical and Aerospace Eng. Department, University the ITER test blanket module (TBM) warrants the need of extensive computer aided engineering (CAE

Abdou, Mohamed

244

Residential Buildings Integration Program  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

David Lee David Lee Program Manager David.Lee@ee.doe.gov 202-287-1785 April 2, 2013 Residential Buildings Integration Program Building Technologies Office Program Peer Review 2 | Building Technologies Office eere.energy.gov Sub-Programs for Review Better Buildings Neighborhood Program Building America Challenge Home Home Energy Score Home Performance with ENERGY STAR Solar Decathlon 3 | Building Technologies Office eere.energy.gov How Residential Buildings Fits into BTO Research & Development * Develop technology roadmaps * Prioritize opportunities * Solicit and select innovative technology solutions * Collaborate with researchers

245

Residential Buildings Integration Program  

NLE Websites -- All DOE Office Websites (Extended Search)

David Lee David Lee Program Manager David.Lee@ee.doe.gov 202-287-1785 April 2, 2013 Residential Buildings Integration Program Building Technologies Office Program Peer Review 2 | Building Technologies Office eere.energy.gov Sub-Programs for Review Better Buildings Neighborhood Program Building America Challenge Home Home Energy Score Home Performance with ENERGY STAR Solar Decathlon 3 | Building Technologies Office eere.energy.gov How Residential Buildings Fits into BTO Research & Development * Develop technology roadmaps * Prioritize opportunities * Solicit and select innovative technology solutions * Collaborate with researchers

246

Visions for Data Management and Remote Collaboration on ITER  

NLE Websites -- All DOE Office Websites (Extended Search)

Transport And Density Peaking At Low Transport And Density Peaking At Low Collisionality On Alcator C-Mod 49 th Annual Meeting of APS - DPP Orlando, 11/14/2007 M. Greenwald, J.W. Hughes, D. Mikkelsen, J. Terry, Alcator Group C. Angioni, H. Weisen M. Greenwald, et al., APS-DPP November 2007 Particle Transport and Density Profiles ● We want to be able to predict density profile - Better fusion performance with moderate density peaking - Effects on stability, divertor operation etc. ● Results from ASDEX (Angioni et al., PRL 2003), JET (H. Weisen, et al., NF 2005) show increase in density peaking at low ν* for H-mode plasmas. - Central fueling (NBI) can play an important role as well. ● Scales to ITER (with weak fueling): n e (0)/ ~ 1.4-1.5 ● In this talk, we'll also look at an additional effect: the role of safety factor

247

Thermoeconomic analysis of a CHP system by iterative numerical techniques  

SciTech Connect

This paper deals with the determination of the thermoeconomic optimum conditions for a constant space heat load imposed on the air coil of a combined heating and power (CHP) system using iterative numerical techniques. From the thermodynamic relations and equations derived from the energy balance and heat exchanger characteristics, an objective function and constraining equations are obtained. A computer program is developed based on the Redlich-Kwong equation of state to estimate the thermodynamic properties of the refrigerant fluid R-22. Additional computer subroutines are developed to perform thermodynamic and thermoeconomic optimization. Optimum values of the operating variables are identified at thermodynamic and thermoeconomic optimum conditions. Results show that the total irreversibilities produced in the system and the cost of fuel consumption are minimum at thermodynamic optimum conditions, but the annual cost of owning and operating the system is minimum at the thermoeconomic optimum condition, which is 34% lower than at the thermodynamic optimum condition.

Damshala, P.R.

2000-07-01T23:59:59.000Z

248

Ideal MHD Stability of ITER Steady State Scenarios with ITBs  

SciTech Connect

One of ITER goals is to demonstrate feasibility of continuous operations using non-inductive current drive. Two main candidates have been identified for advanced operations: the long duration, high neutron fluency hybrid scenario and the steady state scenario, both operating at a plasma current lower than the reference ELMy scenario [1][2] to minimize the required current drive. The steady state scenario targets plasmas with current 7-10 MA in the flat-top, 50% of which will be provided by the self-generated, pressure-driven bootstrap current. It has been estimated that, in order to obtain a fusion gain Q > 5 at a current of 9 MA, it should be ?N > 2.5 and H > 1.5 [3]. This implies the presence of an Internal Transport Barrier (ITB). This work discusses how the stability of steady state scenarios with ITBs is affected by the external heating sources and by perturbations of the equilibrium profiles.

F.M. Poli, C.E. Kessel, S. Jardin, J. Manickam, M. Chance, J. Chen

2011-07-27T23:59:59.000Z

249

Iterative methods for dose reduction and image enhancement in tomography  

DOE Patents (OSTI)

A system and method for creating a three dimensional cross sectional image of an object by the reconstruction of its projections that have been iteratively refined through modification in object space and Fourier space is disclosed. The invention provides systems and methods for use with any tomographic imaging system that reconstructs an object from its projections. In one embodiment, the invention presents a method to eliminate interpolations present in conventional tomography. The method has been experimentally shown to provide higher resolution and improved image quality parameters over existing approaches. A primary benefit of the method is radiation dose reduction since the invention can produce an image of a desired quality with a fewer number projections than seen with conventional methods.

Miao, Jianwei; Fahimian, Benjamin Pooya

2012-09-18T23:59:59.000Z

250

Development of the bus joint for the ITER Central Solenoid  

SciTech Connect

The terminations of the Central Solenoid (CS) modules are connected to the bus extensions by joints located outside the CS in the gap between the CS and Torodial Field (TF) assemblies. These joints have very strict space limitations. Low resistance is a common requirement for all ITER joints. In addition, the CS bus joints will experience and must be designed to withstand significant variation in the magnetic field of several tenths of a Tesla per second during initiation of plasma. The joint resistance is specified to be less than 4 nOhm. The joints also have to be soldered in the field and designed with the possibility to be installed and dismantled in order to allow cold testing in the cold test facility. We have developed coaxial joints that meet these requirements and have demonstrated the feasibility to fabricate and assemble them in the vertical configuration. We introduced a coupling cylinder with superconducting strands soldered to the surface of the cable that can be installed in the ITER assembly hall and at the Cold Test Facility. This cylinder serves as a transition area between the CS module and the bus extension. We made two racetrack samples and tested four bus joints in our Joint Test Apparatus. Resistance of the bus joints was measured by a decay method and by a microvoltmeter; the value of the current was measured by the Hall probes. This measurement method was verified in the previous tests. The resistance of the joints varied insignificantly from 1.5 to 2 nOhm. One of the challenges associated with a soldered joint is the inability to use corrosive chemicals that are difficult to clean. This paper describes our development work on cable preparation, chrome removal, compaction, soldering, and final assembly and presents the test results.

Martovetsky, Nicolai N [ORNL] [ORNL; Irick, David Kim [ORNL] [ORNL; Kenney, Steven J [ORNL] [ORNL

2013-01-01T23:59:59.000Z

251

integr~1  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

7 7 AUDIT REPORT THE U.S. DEPARTMENT OF ENERGY' S MANAGEMENT OF RESEARCH AND DEVELOPMENT INTEGRATION MARCH 1998 U.S. DEPARTMENT OF ENERGY OFFICE OF INSPECTOR GENERAL OFFICE OF AUDIT SERVICES DEPARTMENT OF ENERGY Washington, DC 20585 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Principal Deputy Inspector General SUBJECT: INFORMATION : Audit Report on "Audit of the Department of Energy's Management of Research and Development Integration" BACKGROUND The Congress, independent task forces, and advisory groups have pointed out the need for the Department to improve its integration of research and development (R&D) projects. In the past, R&D management was carried out by different program offices with the research being

252

General linear methods for Volterra integral equations  

Science Journals Connector (OSTI)

We investigate the class of general linear methods of order p and stage order q=p for the numerical solution of Volterra integral equations of the second kind. Construction of highly stable methods based on the Schur criterion is described and examples ... Keywords: Convolution test equation, General linear methods, Linear stability analysis, Order conditions, Volterra integral equations

G. Izzo; Z. Jackiewicz; E. Messina; A. Vecchio

2010-09-01T23:59:59.000Z

253

Integrated System  

NLE Websites -- All DOE Office Websites (Extended Search)

Integrated Window System Our research activities in the field of high performance windows have led us to conclude that even by using high performance insulating glass units, low conductivity frames, and warm edge spacers, there are still untapped sources for improving energy efficiency in the design and use of residential windows. While such high performance windows are a dramatic improvement over conventional units, they do not reduce conductive losses through wall framing around the window, offer guarantees against excessive wall/window infiltration nor do they adapt to the daily and seasonal potentials for night insulation and summer shading. To meet this need, we have been working on the design, development, and prototyping of Integrated Window Systems (IWS) since 1993. Integrated Window Systems are a form of panelized construction where the wall panel includes an operable or fixed window sash, recessed night insulation, integral solar shading, and is built in a factory setting in order to minimize thermal short circuits and infiltration at joints. IWSs can be built in modular lengths to facilitate their installation with conventional wood frame stick construction or other forms of panelized construction.

254

Smart Grid Integration Laboratory  

SciTech Connect

The initial federal funding for the Colorado State University Smart Grid Integration Laboratory is through a Congressionally Directed Project (CDP), DE-OE0000070 Smart Grid Integration Laboratory. The original program requested in three one-year increments for staff acquisition, curriculum development, and instrumentation â?? all which will benefit the Laboratory. This report focuses on the initial phase of staff acquisition which was directed and administered by DOE NETL/ West Virginia under Project Officer Tom George. Using this CDP funding, we have developed the leadership and intellectual capacity for the SGIC. This was accomplished by investing (hiring) a core team of Smart Grid Systems engineering faculty focused on education, research, and innovation of a secure and smart grid infrastructure. The Smart Grid Integration Laboratory will be housed with the separately funded Integrid Laboratory as part of CSUâ??s overall Smart Grid Integration Center (SGIC). The period of performance of this grant was 10/1/2009 to 9/30/2011 which included one no cost extension due to time delays in faculty hiring. The Smart Grid Integration Laboratoryâ??s focus is to build foundations to help graduate and undergraduates acquire systems engineering knowledge; conduct innovative research; and team externally with grid smart organizations. Using the results of the separately funded Smart Grid Workforce Education Workshop (May 2009) sponsored by the City of Fort Collins, Northern Colorado Clean Energy Cluster, Colorado State University Continuing Education, Spirae, and Siemens has been used to guide the hiring of faculty, program curriculum and education plan. This project develops faculty leaders with the intellectual capacity to inspire its students to become leaders that substantially contribute to the development and maintenance of Smart Grid infrastructure through topics such as: (1) Distributed energy systems modeling and control; (2) Energy and power conversion; (3) Simulation of electrical power distribution system that integrates significant quantities of renewable and distributed energy resources; (4) System dynamic modeling that considers end-user behavior, economics, security and regulatory frameworks; (5) Best practices for energy management IT control solutions for effective distributed energy integration (including security with the underlying physical power systems); (6) Experimental verification of effects of various arrangements of renewable generation, distributed generation and user load types along with conventional generation and transmission. Understanding the core technologies for enabling them to be used in an integrated fashion within a distribution network remains is a benefit to the future energy paradigm and future and present energy engineers.

Wade Troxell

2011-09-30T23:59:59.000Z

255

Viscosity of polymer solutions  

Science Journals Connector (OSTI)

Viscosity of polymer solutions ... Abstracts for Volume 5A, Number 2. This program contains three components: "Density of Liquids", "Viscosity of Liquids", and "Viscosity of Polymer Solutions". ...

Gary L. Bertrand

1992-01-01T23:59:59.000Z

256

THE DAYLIGHTING SOLUTION  

E-Print Network (OSTI)

1980, pp.l4-20 THE DAYLIGHTING SOLUTION Stephen SelkowitzEEB-W·-80-19 W-74 THE DAYLIGHTING SOLUTION Stephen Selkowitz

Selkowitz, Stephen

2013-01-01T23:59:59.000Z

257

An iterative searching and ranking algorithm for prioritising pharmacogenomics genes  

Science Journals Connector (OSTI)

Pharmacogenomics (PGx) studies are to identify genetic variants that may affect drug efficacy and toxicity. A machine understandable drug-gene relationship knowledge is important for many computational PGx studies and for personalised medicine. A comprehensive and accurate PGx-specific gene lexicon is important for automatic drug-gene relationship extraction from the scientific literature, rich knowledge source for PGx studies. In this study, we present a bootstrapping learning technique to rank 33,310 human genes with respect to their relevance to drug response. The algorithm uses only one seed PGx gene to iteratively extract and rank co-occurred genes using 20 million MEDLINE abstracts. Our ranking method is able to accurately rank PGx-specific genes highly among all human genes. Compared to randomly ranked genes (precision: 0.032, recall: 0.013, F1: 0.018), the algorithm has achieved significantly better performance (precision: 0.861, recall: 0.548, F1: 0.662) in ranking the top 2.5% of genes.

Rong Xu; QuanQiu Wang

2013-01-01T23:59:59.000Z

258

Status of the Design of the ITER ECE Diagnostic  

SciTech Connect

The baseline design for the ITER electron cyclotron emission (ECE) diagnostic has entered the detailed preliminary design phase. Two plasma views are planned, a radial view and an oblique view that is sensitive to distortions in the electron momentum distribution near the average thermal momentum. Both views provide high spatial resolution electron temperature profiles when the momentum distribution remains Maxwellian. The ECE diagnostic system consists of the front-end optics, including two 1000 K calibration sources, in equatorial port plug EP9, the 70-1000 GHz transmission system from the front-end to the diagnostics hall, and the ECE instrumentation in the diagnostics hall. The baseline ECE instrumentation will include two Michelson interferometers that can simultaneously measure ordinary and extraordinary mode ECE from 70 to 1000 GHz, and two heterodyne radiometer systems, covering 122-230 GHz and 244-355 GHz. Significant design challenges include 1) developing highly-reliable 1000 K calibration sources and the associated shutters/mirrors, 2) providing compliant couplings between the front-end optics and the polarization splitter box that accommodate displacements of the vacuum vessel during plasma operations and bake out, 3) protecting components from damage due to stray ECH radiation and other intense millimeter wave emission and 4) providing the low-loss broadband transmission system.

Taylor, Gary [PPPL

2014-04-01T23:59:59.000Z

259

Financing Solutions | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Solution Center Financing Solutions Financing Solutions Transitioning to a clean energy economy requires innovative financing solutions that enable state, local, and tribal...

260

Thirty states sign ITER nuclear fusion plant deal 1 hour, 28 minutes ago  

E-Print Network (OSTI)

Thirty states sign ITER nuclear fusion plant deal 1 hour, 28 minutes ago Representatives of more than 30 countries signed a deal on Tuesday to build the world's most advanced nuclear fusion reactor

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Efficient Approximate Value Iteration for Continuous Gaussian POMDPs Jur van den Berg1  

E-Print Network (OSTI)

Efficient Approximate Value Iteration for Continuous Gaussian POMDPs Jur van den Berg1 Sachin Patil2 Ron Alterovitz2 1 School of Computing, University of Utah, berg@cs.utah.edu. 2 Dept. of Computer

van den Berg, Jur

262

PPPL and ITER: Lab teams support the world's largest fusion experiment...  

NLE Websites -- All DOE Office Websites (Extended Search)

PPPL and ITER: Lab teams support the world's largest fusion experiment with leading-edge ideas and design By John Greenwald May 7, 2013 Tweet Widget Google Plus One Share on...

263

Full tokamak discharge simulation and kinetic plasma profile control for ITER.  

E-Print Network (OSTI)

??Understanding non-linearly coupled physics between plasma transport and free-boundary equilibrium evolution is essential to operating future tokamak devices, such as ITER and DEMO, in the… (more)

Kim, Sun Hee

2009-01-01T23:59:59.000Z

264

Decomposition of one-dimensional waveform using iterative Gaussian diffusive filtering methods  

Science Journals Connector (OSTI)

...conventional Gaussian smoothing method (Mackworth...method, the Gaussian exponential function has the following...selection of an appropriate smoothing factor, sigma, as...ends attenuates in an exponential manner as points move...iterative Gaussian smoothing method. The above...

2008-01-01T23:59:59.000Z

265

A Technique for Generic Iteration and Its Optimization Stephen M. Watt  

E-Print Network (OSTI)

A Technique for Generic Iteration and Its Optimization Stephen M. Watt Department of Computer Science University of Western Ontario London Ontario, Canada N6A 5B7 watt@csd.uwo.ca Abstract Software

Watt, Stephen M.

266

Prediction-based Iterative Learning Control (PILC) for Uncertain Dynamic Nonlinear Systems Using System Identification Technique  

Science Journals Connector (OSTI)

Prediction-based Iterative Learning Control (PILC) is proposed in this paper for a ... time varying nonlinear uncertain systems. Convergence of PILC is analyzed and the uniform boundedness of ... succeeding itera...

M. Arif; T. Ishihara; H. Inooka

2000-03-01T23:59:59.000Z

267

Simulation-based scheduling for parcel consolidation terminals: a comparison of iterative improvement and simulated annealing  

Science Journals Connector (OSTI)

This research explores the application of a simulation-based scheduling algorithm to generate unload schedules for processing feeder trailers in a parcel consolidation terminal. The study compares the performance of iterative improvement and simulated ...

Douglas L. McWilliams

2005-12-01T23:59:59.000Z

268

Symbol Synchronization in Coded UWB Systems using Adaptive Iterative Detection Durai Thirupathi and Keith M. Chugg  

E-Print Network (OSTI)

common UWB system found in the literature, the impulse radio, uses very narrow pulses as a way to expand significantly degrading the perfor- mance. I. INTRODUCTION After the discovery of turbo codes [1], iterative

Southern California, University of

269

Convergent Iterative Constrained Variation Algorithm for Calculation of Electron-Transfer Transition States  

E-Print Network (OSTI)

Convergent Iterative Constrained Variation Algorithm for Calculation of Electron the potential-dependent transition states of electron transfer reactions by quantum calculations. This approach makes it more feasible to study heterogeneous electron transfer processes with the theory of local

Pitsch, Heinz

270

RF Analysis of ITER Remote Steering Antenna for Electron-Cyclotron Plasma Heating  

Science Journals Connector (OSTI)

An application of remote RF beam steering concept, based on image multiplication phenomena in a corrugated square waveguide, to electron-cyclotron plasma heating and current drive for ITER has been ... breakdown,...

G.G. Denisov; S.V. Kuzikov; N. Kobayashi

2001-12-01T23:59:59.000Z

271

PISCES FY11 Research Highlight Tritium accumulation within the ITER vessel is expected to be dominated  

E-Print Network (OSTI)

. The PISCES-B device at the University of California in San Diego has used a high power laser system disruption avoidance by intentional mitigation of high-power ITER discharges, it does not appear to be a risk

272

Panel Report to FESAC: Review of the 1996 ITER Detailed Design Report  

Science Journals Connector (OSTI)

This report presents the results of a U.S. review of the 1996 Detailed Design Report (DDR) of the International Thermonuclear Experimental Reactor (ITER) project. It was prepared by a panel established by the ...

R. W. Conn; D. E. Baldwin; R. J. Briggs; J. D. Callen…

1999-12-01T23:59:59.000Z

273

The European Joint Undertaking for ITER and the Development of Fusion Energy  

E-Print Network (OSTI)

· Manage procurement and Quality Assurance · Arrange to make European staff available to ITER · Interface · Transparency ­ decision making process and Financial Regulation rules · Synergy and Complementarity

274

Vacuum photodiode detectors for soft x-ray ITER plasma tomography  

SciTech Connect

A special type of vacuum photodiode detector (VPD) for x-ray tomography of (ITER) plasma is described. Laboratory experiments demonstrate that VPD has high sensitivity to thermal x-rays and low sensitivity to hard gamma rays and neutrons. It was shown that in ITER environment the signal due to thermal x-rays will surpass the background signal by more than a factor of 100.

Gott, Yu.V.; Stepanenko, M.M. [RRC, Nuclear Fusion Institute, Kurchatov sq.1, Moscow, 123182 (Russian Federation)

2005-07-15T23:59:59.000Z

275

Iterative cellular array multiplier using overlapped four-bit scanning technique and its application  

E-Print Network (OSTI)

ITERATIVE CELLULAR ARRAY MULTIPLIER USING OVERLAPPED FOUR-BIT SCANNING TECHNIQUE AND ITS APPLICATION A Thesis WU WOAN KIM Submitted to the 0%ce of Graduate Studies of Texas ARM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1990 Major Subject: Electrical Engineering ITERATIVE CELLULAR ARRAY MULTIPLIER USING OVERLAPPED FOUR-BIT SCANNING TECHNIQUE AND ITS APPLICATION A Thesis WU WOAN KIM Approved as to style and content by: Karan...

Kim, Wu Woan

2012-06-07T23:59:59.000Z

276

Interrelated fundamental solutions for various heterogeneous potential, wave and advective-diffusive problems  

Science Journals Connector (OSTI)

The Green's fundamental solutions for several second order elliptic partial differential equations governing various physical processes are found to be interrelated. These solutions are required for boundary integral equation formulations. Thus a solution for one such process is essentially a solution for several others. This is particularly useful for heterogeneous media where the catalog of existing fundamental solutions is meager. After a discussion of these relationships, a new class of two dimensional fundamental solutions involving axisymmetric material variations is given.

Richard Paul Shaw; G. Steven Gipson

1995-01-01T23:59:59.000Z

277

Toroidal field coil replacement study for the International Thermonuclear Experimental Reactor (ITER)  

SciTech Connect

The objective of this study is to develop an estimate of the time required to replace a failed toroidal field (TF) coil in the International Thermonuclear Experimental Reactor (ITER). This estimate is based on the current ITER design which resulted from the Conceptual Design Activities began in spring of 1988 and ending in December 1990. Although the TF Coils in ITER are designated permanent components and expected to last the life of the plant, the history of failures of large coils in fusion devices has prompted an assessment of the down time that might be required for replacement of a failed TF coil in ITER. The difficulty of replacement of a TF Coil in ITER is compounded by the large physical size of ITER, and the radiation fields which necessitate the use of remote handling equipment for most maintenance activities. Since 10 out of 16 TF coils are adjacent to either a Neutral Beam Injector (NBI) port or a remote handling (RH) port, it is probable that a failed TF Coil will be in one of these inconvenient locations. For this study, TF coil number 3 is assumed to fail and its replacement will be evaluated as a typical case. TF coil number 3 is located between a remote handling port ({number sign}3) and a port allocated to the lower hybrid ({number sign}4).

Not Available

1991-08-01T23:59:59.000Z

278

Toroidal field coil replacement study for the International Thermonuclear Experimental Reactor (ITER)  

SciTech Connect

The objective of this study is to develop an estimate of the time required to replace a failed toroidal field (TF) coil in the International Thermonuclear Experimental Reactor (ITER). This estimate is based on the current ITER design which resulted from the Conceptual Design Activities began in spring of 1988 and ending in December 1990. Although the TF Coils in ITER are designated permanent components and expected to last the life of the plant, the history of failures of large coils in fusion devices has prompted an assessment of the down time that might be required for replacement of a failed TF coil in ITER. The difficulty of replacement of a TF Coil in ITER is compounded by the large physical size of ITER, and the radiation fields which necessitate the use of remote handling equipment for most maintenance activities. Since 10 out of 16 TF coils are adjacent to either a Neutral Beam Injector (NBI) port or a remote handling (RH) port, it is probable that a failed TF Coil will be in one of these inconvenient locations. For this study, TF coil number 3 is assumed to fail and its replacement will be evaluated as a typical case. TF coil number 3 is located between a remote handling port ({number_sign}3) and a port allocated to the lower hybrid ({number_sign}4).

Not Available

1991-08-01T23:59:59.000Z

279

NREL: Transmission Grid Integration - Wind Integration Datasets  

NLE Websites -- All DOE Office Websites (Extended Search)

Wind Integration Datasets The Wind Integration Datasets provide energy professionals with a consistent set of wind profiles for the eastern United States and the western United...

280

Pellet Fueling Technology Development Leading to Efficient Fueling of ITER Burning Plasmas  

SciTech Connect

Pellet injection is the primary fueling technique planned for central fueling of the ITER burning plasma, which is a requirement for achieving high fusion gain. Injection of pellets from the inner wall has been shown on present day tokamaks to provide efficient fueling and is planned for use on ITER [1,2]. Significant development of pellet fueling technology has occurred as a result of the ITER R&D process. Extrusion rates with batch extruders have reached more than 1/2 of the ITER design specification of 1.3 cm3/s [3] and the ability to fuel efficiently from the inner wall by injecting through curved guide tubes has been demonstrated on several fusion devices. Modeling of the fueling deposition from inner wall pellet injection has been done using the Parks et al. ExB drift model [4] shows that inside launched pellets of 3mm size and speeds of 300 m/s have the capability to fuel well inside the separatrix. Gas fueling on the other hand is calculated to have very poor fueling efficiency due to the high density and wide scrape off layer compared to current machines. Isotopically mixed D/T pellets can provide efficient tritium fueling that will minimize tritium wall loading when compared to gas puffing of tritium. In addition, the use of pellets as an ELM trigger has been demonstrated and continues to be investigated as an ELM mitigation technique. During the ITER CDA and EDA the U.S. was responsible for ITER fueling system design and R&D and is in good position to resume this role for the ITER pellet fueling system. Currently the performance of the ITER guide tube design is under investigation. A mockup is being built that will allow tests with different pellet sizes and repetition rates. The results of these tests and their implication for fueling efficiency and central fueling will be discussed. The ITER pellet injection technology developments to date, specified requirements, and remaining development issues will be presented along with a plan to reach the design goal in time for employment on ITER.

Baylor, Larry R [ORNL; Combs, Stephen Kirk [ORNL; Jernigan, Thomas C [ORNL; Houlberg, Wayne A [ORNL; Maruyama, S. [ITER International Team, Garching, Germany; Owen, Larry W [ORNL; Parks, P. B. [General Atomics; Rasmussen, David A [ORNL

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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281

11/12/07 11:45Project Syndicate Page 1 sur 3file:///Users/balibar/Desktop/Sebastien/climat+nergie+ITER/ITER/Project%20Syndicate.webarchive  

E-Print Network (OSTI)

, because nuclear fusion can provide an infinite and clean source of energy. But ITER will do nothing, Alternative Green Energy Growth Stock. www.GulfEthanolCorp.com Home / Commentaries / The Fusion Myth Article and form heavier elements (helium). Both fission and fusion produce a lot of energy. Some political leaders

Balibar, SĂ©bastien

282

Parallelization of the Value-Iteration algorithm for  

E-Print Network (OSTI)

and stochastic environment. To determine the solution of a POMDP, algorithms with a running time in the PSPACE using the massive parallel processing power of modern Graphic Processing Units (GPU). Our experiments synchronization features are needed to exploit the full potential. #12;ii #12;Summary (Danish) Delvist

283

Computer Aids for the Solution of Common Noise?Control Problems  

Science Journals Connector (OSTI)

Time?shared computer systems permit the economical use of computer assistance in solving acoustic problems. Programs have been developed that provide (1) graphical outputs of measured and computed data (2) quicker and more thorough treatment of some common problems and (3) iterative solutions that assist in the noise control design process. Examples of these programs include 1 3 ? oct band plots statistical analyses room?mode frequency calculations and muffler?design calculations.

J. J. Coles, Bolt Beranek and Newman Inc., Cambridge, Massachusetts

1969-01-01T23:59:59.000Z

284

Thermodynamics of dilute solutions  

Science Journals Connector (OSTI)

Thermodynamics of dilute solutions ... The development of the necessary thermodynamic equations directly in terms of molality is not common ... ...

Gabor Jancso; David V. Fenby

1983-01-01T23:59:59.000Z

285

On convergence of an iterative technique for solution of the implicit relationship between variables in the equations for moist convection  

E-Print Network (OSTI)

N)+M+ Sa (37) (3) a a (O) e a (O) and D) (3S~ R~ R~ ) Ds + (Ss 38~ R~ ) D) + (Ry M + Sr N)+N+ Sa (38) Ifn=3 Dq ? (Sg -6S R +Rq) Dq ? (4S~R~ - 4Sa R') D) + ~(Sj R~)M (2SyR~)N] + (SyM RyN) + M + Sa (39) and 12 D~ = (4SI3RI - I R ) Dk + (Sl ? 6SIRj... CONTINUE )rR I TE ( 6 r 9) I rRR ~ R ( rFC( I ) 9 FORFAT (Tier 'DR( ' r IZr ) r T3lrEl ~ 6 r(R ( TE (6 ~ I I ) I r IF, ( I, IC ( ( ) ll FOR& AT(Tle, rn I(' l2, ') ', T31, El4. 6, T6l, f14. 6, T9[, E14. 6) 200 CONTINUE 119o CONT(NUE RETURN ENO FUNCT...

Perry, Richard Allan

2012-06-07T23:59:59.000Z

286

Non-iterative multiple-attenuation methods: linear inverse solutions to non-linear inverse problems - II. BMG approximation  

Science Journals Connector (OSTI)

......significant if the demultiple process requires the removal of more...suggestions during the review process. We also thank Dr Patrick Lailly...imaging: 63rd Ann. Internat. Mtg., Soc. Expl. Geophys...elimination: 72nd Ann. Internat. Mtg: Soc. of Expl. Geophys......

Luc T. Ikelle; Are Osen; Lasse Amundsen; Yunqing Shen

2004-12-01T23:59:59.000Z

287

Design and Analysis of the ITER Vertical Stability Coils  

SciTech Connect

The ITER vertical stability (VS) coils have been developed through the preliminary design phase by Princeton Plasma Physics Laboratory (PPPL). Final design, prototyping and construction will be carried out by the Chinese Participant Team contributing lab, Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP). The VS coils are a part of the in-vessel coil systems which include edge localized mode (ELM) coils as well as the VS coils. An overview of the ELM coils is provided in another paper at this conference. 15 The VS design employs four turns of stainless steel jacketed mineral insulated copper (SSMIC) conductors The mineral insulation is Magnesium Oxide (MgO). Joule and nuclear heat is removed by water flowing at 3 m/s through the hollow copper conductor. A key element in the design is that slightly elevated temperatures in the conductor and its support spine during operation impose compressive stresses that mitigate fatigue damage. Away from joints, and break-outs, conductor thermal stresses are low because of the axisymmetry of the winding (there are no corner bends as in the ELM coils).The 120 degree segment joint, and break-out or terminal regions are designed with similar but imperfect constraint compared with the ring coil portion of the VS. The support for the break-out region is made from a high strength copper alloy, CuCrZr. This is needed to conduct nuclear heat to the actively cooled conductor and to the vessel wall. The support "spine" for the ring coil portion of the VS is 316 stainless steel, held to the vessel with preloaded 718 bolts. Lorentz loads resulting from normal operating loads, disruption loads and loads from disruption currents in the support spine shared with vessel, are applied to the VS coil. The transmission of the Lorentz and thermal expansion loads from the "spine" to the vessel rails is via friction augmented with a restraining "lip" to ensure the coil frictional slip is minimal and acceptable. Stresses in the coil, joints, and break-outs are presented. These are compared with static and fatigue allowables. Design for fatigue is much less demanding than for the ELM coils. A total of 30,000 cycles is required for VS design. Loads on the vessel due to the thermal expansion of the coil and spine are significant. Efforts to reduce these by reducing the cross section of the spine have been made but the vessel still must support loads resulting from restraint of thermal expansion.

Peter H. Titus, et. al.

2012-09-06T23:59:59.000Z

288

SunShot Initiative: Systems Integration  

NLE Websites -- All DOE Office Websites (Extended Search)

Systems Integration Systems Integration High Penetration Solar Portal The High Penetration Solar Portal has timely information related to high penetration solar scenarios and integrating solar into the grid. The site allows utilities, grant awardees, regulators, researchers, and other solar professionals can easily share data, case studies, lessons learned, and demonstration project findings. Photo of power lines. Transmission line access is one challenge facing new utility-scale solar installations in the U.S. Photo by Dennis Schroeder, NREL 18981 Through the SunShot Initiative, the U.S. Department of Energy (DOE) supports the development of innovative, cost-effective solutions that allow increasing amounts of solar energy to integrate seamlessly with the national power grid while mitigating associated risks and reducing system costs. Such solutions will help achieve the SunShot goals by ensuring system reliability and encouraging the widespread deployment of solar technologies, such as photovoltaics and concentrating solar power.

289

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

TrakLok Corporation TrakLok Corporation Oak Ridge National Laboratory 463 likes TrakLok, Inc., based in Knoxville, Tenn., intends to use an Oak Ridge National Laboratory (ORNL)-developed, technology for tagging, tracking, locating and communicating with cargo containers and trailers in transit. The ORNL technology provides an avenue to meet increasing requirements for shipping containers to be "smart boxes" that can be tracked electronically. TrakLok uses GPS technology and satellite communications as part of its tracking and warning capability and international container locking technology to protect against container tampering, theft, vandalism and smuggling. Shipments can be tracked through a web-accessible, information technology-based global tracking system to provide real time visibility of

290

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

7AC Technologies, Inc. 7AC Technologies, Inc. National Renewable Energy Laboratory 498 likes 7AC Technologies, based in Woburn, Massachusetts, is developing Liquid Desiccant HVAC systems for Commercial and Industrial buildings using technology from the National Renewable Energy Laboratory. These Liquid Desiccant HVAC systems deliver a 50 to 75 percent reduction in energy usage over conventional HVAC units. The system consists of a membrane conditioner responsible for drying and cooling the air and a heat-driven regenerator. The liquid desiccant design allows for the utilization of solar or waste heat sources, paving the way for net-zero energy retrofits to existing buildings with costs comparable to conventional HVAC. Learn More Borla Performance Industries, Inc. Oak Ridge National Laboratory

291

Integrating Security Solutions to Support nanoCMOS Electronics Research .  

E-Print Network (OSTI)

??The UK Engineering and Physical Sciences Research Council (EPSRC) funded Meeting the Design Challenges of nanoCMOS Electronics (nanoCMOS) is developing a research infrastructure for collaborative… (more)

SINNOTT, RICHARD

2008-01-01T23:59:59.000Z

292

Integrating Security Solutions to Support nanoCMOS Electronics Research  

E-Print Network (OSTI)

Sinnott,R.O. Asenov,A. Bayliss,C. Davenhall,C. Doherty,T. Harbulot,B. Jones,M. Martin,D. Millar,C. Roy,G. Roy,S. Stewart,G. Watt,J. IEEE International Symposium on Parallel and Distributed Processing Systems with Applications, Sydney Australia, December 2008.

Sinnott, R.O.

293

Separations and safeguards model integration.  

SciTech Connect

Research and development of advanced reprocessing plant designs can greatly benefit from the development of a reprocessing plant model capable of transient solvent extraction chemistry. This type of model can be used to optimize the operations of a plant as well as the designs for safeguards, security, and safety. Previous work has integrated a transient solvent extraction simulation module, based on the Solvent Extraction Process Having Interaction Solutes (SEPHIS) code developed at Oak Ridge National Laboratory, with the Separations and Safeguards Performance Model (SSPM) developed at Sandia National Laboratory, as a first step toward creating a more versatile design and evaluation tool. The goal of this work was to strengthen the integration by linking more variables between the two codes. The results from this integrated model show expected operational performance through plant transients. Additionally, ORIGEN source term files were integrated into the SSPM to provide concentrations, radioactivity, neutron emission rate, and thermal power data for various spent fuels. This data was used to generate measurement blocks that can determine the radioactivity, neutron emission rate, or thermal power of any stream or vessel in the plant model. This work examined how the code could be expanded to integrate other separation steps and benchmark the results to other data. Recommendations for future work will be presented.

Cipiti, Benjamin B.; Zinaman, Owen

2010-09-01T23:59:59.000Z

294

Tutorial: open source enterprise application integration - introducing the event processing capabilities of apache camel  

Science Journals Connector (OSTI)

"Interesting applications rarely live in isolation." ([1], xxix) With this sentence G. Hohpe and B. Woolf start the introduction to their book Enterprise Integration Pattern: Designing, Building, and Deploying Messaging Solutions. While the statement ... Keywords: event processing, integration framework

Christoph Emmersberger; Florian Springer

2013-06-01T23:59:59.000Z

295

A new iterative approach to solving the transport equation  

E-Print Network (OSTI)

directions, and apply the divergence theorem to the spatial integral of the second term: 4 ( )? ? ?, , ,E V N dS dE d r t E n t ??? ? = ? ? ? ? ? ? ? ? ? ? arrowrightnospintegralloop ( ) ( )?, , , ,tV EdV dE d r E r t E? ?? ?? ? ? ?? ? ? arrowrightnosp... arrowrightnosp ( ) ( ) ( )4 0 ?, , ? ? ?' ' , ' , ' ', , , 'V E s Q r E dV dE d d dE r E E r t Epi ? ? ? ? ? ? ?? ? ? ? ?+ ? ? ? ?+ ? ? ? ? ? ? ? ?? ? ? ? ? ? ? arrowrightnosp arrowrightnosp arrowrightnosp , (3) where =?? tN total change rate...

Maslowski Olivares, Alexander Enrique

2009-05-15T23:59:59.000Z

296

"Progress in U.S. ITER Magnet Systems", Wayne Reiersen, Princeton  

NLE Websites -- All DOE Office Websites (Extended Search)

November 28, 2012, 4:15pm November 28, 2012, 4:15pm MBG Auditorium "Progress in U.S. ITER Magnet Systems", Wayne Reiersen, Princeton University Mr. Wayne Reiersen Princeton University U.S. ITER is responsible for providing the ITER Central Solenoid (CS), nine lengths of Toroidal Field (TF) Coil conductor, and Insert Coils for assessing CS and TF conductor performance. The status of the ongoing design and fabrication efforts will be reviewed. The interesting hurdles that had to be negotiated, the lingering problems, and the lessons learned will be discussed. (At the presenter's request, no video or presentation materials are available for this lecture.) Contact Information Coordinator(s): Carol Ann Austin caustin@pppl.gov Host(s): Phil Heitzenroeder pheitzen@pppl.gov PPPL Entrance Procedures

297

Implementation of the Iterative Proportion Fitting Algorithm for Geostatistical Facies Modeling  

SciTech Connect

In geostatistics, most stochastic algorithm for simulation of categorical variables such as facies or rock types require a conditional probability distribution. The multivariate probability distribution of all the grouped locations including the unsampled location permits calculation of the conditional probability directly based on its definition. In this article, the iterative proportion fitting (IPF) algorithm is implemented to infer this multivariate probability. Using the IPF algorithm, the multivariate probability is obtained by iterative modification to an initial estimated multivariate probability using lower order bivariate probabilities as constraints. The imposed bivariate marginal probabilities are inferred from profiles along drill holes or wells. In the IPF process, a sparse matrix is used to calculate the marginal probabilities from the multivariate probability, which makes the iterative fitting more tractable and practical. This algorithm can be extended to higher order marginal probability constraints as used in multiple point statistics. The theoretical framework is developed and illustrated with estimation and simulation example.

Li Yupeng, E-mail: yupeng@ualberta.ca; Deutsch, Clayton V. [University of Alberta (Canada)

2012-06-15T23:59:59.000Z

298

Solution deposition assembly  

DOE Patents (OSTI)

Methods and devices are provided for improved deposition systems. In one embodiment of the present invention, a deposition system is provided for use with a solution and a substrate. The system comprises of a solution deposition apparatus; at least one heating chamber, at least one assembly for holding a solution over the substrate; and a substrate curling apparatus for curling at least one edge of the substrate to define a zone capable of containing a volume of the solution over the substrate. In another embodiment of the present invention, a deposition system for use with a substrate, the system comprising a solution deposition apparatus; at heating chamber; and at least assembly for holding solution over the substrate to allow for a depth of at least about 0.5 microns to 10 mm.

Roussillon, Yann; Scholz, Jeremy H; Shelton, Addison; Green, Geoff T; Utthachoo, Piyaphant

2014-01-21T23:59:59.000Z

299

Pellet injection into H-mode ITER plasma with the presence of internal transport barriers  

SciTech Connect

The impacts of pellet injection into ITER type-1 ELMy H-mode plasma with the presence of internal transport barriers (ITBs) are investigated using self-consistent core-edge simulations of 1.5D BALDUR integrated predictive modeling code. In these simulations, the plasma core transport is predicted using a combination of a semi-empirical Mixed B/gB anomalous transport model, which can self-consistently predict the formation of ITBs, and the NCLASS neoclassical model. For simplicity, it is assumed that toroidal velocity for {omega}{sub E Multiplication-Sign B} calculation is proportional to local ion temperature. In addition, the boundary conditions are predicted using the pedestal temperature model based on magnetic and flow shear stabilization width scaling; while the density of each plasma species, including both hydrogenic and impurity species, at the boundary are assumed to be a large fraction of its line averaged density. For the pellet's behaviors in the hot plasma, the Neutral Gas Shielding (NGS) model by Milora-Foster is used. It was found that the injection of pellet could result in further improvement of fusion performance from that of the formation of ITB. However, the impact of pellet injection is quite complicated. It is also found that the pellets cannot penetrate into a deep core of the plasma. The injection of the pellet results in a formation of density peak in the region close to the plasma edge. The injection of pellet can result in an improved nuclear fusion performance depending on the properties of pellet (i.e., increase up to 5% with a speed of 1 km/s and radius of 2 mm). A sensitivity analysis is carried out to determine the impact of pellet parameters, which are: the pellet radius, the pellet velocity, and the frequency of injection. The increase in the pellet radius and frequency were found to greatly improve the performance and effectiveness of fuelling. However, changing the velocity is observed to exert small impact.

Leekhaphan, P. [Thammasat University, School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology (Thailand); Onjun, T. [Thammasat University, School of Manufacturing Systems and Mechanical Engineering, Sirindhorn International Institute of Technology (Thailand)

2011-04-15T23:59:59.000Z

300

Solution 3 - Spring 2011  

E-Print Network (OSTI)

Neglecting air resistance, find the maximum height above the roadway which the particle can reach. Solution: (by Shuhao Cao, Graduate student, Mathematics).

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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301

Bounds on the map threshold of iterative decoding systems with erasure noise  

E-Print Network (OSTI)

BOUNDS ON THE MAP THRESHOLD OF ITERATIVE DECODING SYSTEMS WITH ERASURE NOISE A Thesis by CHIA-WEN WANG Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment of the requirements for the degree of MASTER OF SCIENCE... August 2008 Major Subject: Electrical Engineering BOUNDS ON THE MAP THRESHOLD OF ITERATIVE DECODING SYSTEMS WITH ERASURE NOISE A Thesis by CHIA-WEN WANG Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment...

Wang, Chia-Wen

2008-10-10T23:59:59.000Z

302

Comparisons of Predicted Plasma Performance in ITER H-mode Plasmas with Various Mixes of External He  

SciTech Connect

Performance in H-mode DT plasmas in ITER with various choices of heating systems are predicted and compared. Combinations of external heating by Negative Ion Neutral Beam Injection (NNBI), Ion Cyclotron Range of Frequencies (ICRF), and Electron Cyclotron Heating (ECH) are assumed. Scans with a range of physics assumptions about boundary temperatures in the edge pedestal, alpha ash transport, and toroidal momentum transport are used to indicate effects of uncertainties. Time-dependent integrated modeling with the PTRANSP code is used to predict profiles of heating, beam torque, and plasma profiles. The GLF23 model is used to predict temperature profiles. Either GLF23 or the assumption of a constant ratio for ?ř/?i is used to predict toroidal rotation profiles driven by the beam torques. Large differences for the core temperatures are predicted with different mixes of the external heating during the density and current ramp-up phase, but the profiles are similar during the flattop phase. With ?ř/?i = 0.5, the predicted toroidal rotation is relatively slow and the flow shear implied by the pressure, toroidal rotation, and neoclassical poloidal rotation are not sufficient to cause significant changes in the energy transport or steady state temperature profiles. The GLF23-predicted toroidal rotation is faster by a factor of six, and significant flow shear effects are predicted.

R.V. Budny

2009-03-20T23:59:59.000Z

303

INTEGRATING VR IN AN ENGINEERING COLLABORATIVE PROBLEM SOLVING ENVIRONMENT  

E-Print Network (OSTI)

INTEGRATING VR IN AN ENGINEERING COLLABORATIVE PROBLEM SOLVING ENVIRONMENT Ismael H. F. dos Santos environments. Abstract: We present an environment for executing engineering simulations and visualizing results solution, called Collaborative Engineering Environment (CEE) is intended to create a useful collaborative

Barbosa, Alberto

304

Development of a mirror-based endoscope for divertor spectroscopy on JET with the new ITER-like wall (invited)  

E-Print Network (OSTI)

CO2 plasma by laser driven plasma wind tunnel J. Appl. Phys. 112, 033301 (2012) Additional, Abingdon, OX14 3DB, United Kingdom 1 Institute of Energy and Climate Research ­ Plasma Physics the implementation of the ITER-like wall in 2011. The endoscope is a prototype for testing an ITER relevant design

305

ITER have a need for ion cyclotron heating (ICH) as part of the plasma heating system mix to reach the  

E-Print Network (OSTI)

Background ITER have a need for ion cyclotron heating (ICH) as part of the plasma heating system ITER ion cyclotron heating systems design Section view through antenna module Thermal model of antenna The ion cyclotron heating antenna is currently in its preliminary design phase and is undergoing detailed

306

ITER: Japan to assign 20 percent of construction work to EU firms; Proposal for EU official to assume chief executive  

E-Print Network (OSTI)

ITER: Japan to assign 20 percent of construction work to EU firms; Proposal for EU official to assume chief executive position MAINICHI (Top Play) (Lead para.) December 7, 2004 Japan and the European Experimental Reactor (ITER). Japan yesterday revealed the details of a proposal to host the project. Tokyo has

307

Dispersant solutions for dispersing hydrocarbons  

DOE Patents (OSTI)

A dispersant solution includes a hydrocarbon dispersing solution derived from a bacterium from ATCC 75527, ATCC 75529, or ATCC 55638.

Tyndall, R.L.

1997-03-11T23:59:59.000Z

308

Thermal Control & System Integration  

Energy.gov (U.S. Department of Energy (DOE))

The thermal control and system integration activity focuses on issues such as the integration of motor and power control technologies and the development of advanced thermal control technologies....

309

Distribution Grid Integration  

Energy.gov (U.S. Department of Energy (DOE))

The DOE Systems Integration team funds distribution grid integration research and development (R&D) activities to address the technical issues that surround distribution grid planning,...

310

Solvent wash solution  

DOE Patents (OSTI)

A process is claimed for removing diluent degradation products from a solvent extraction solution, which has been used to recover uranium and plutonium from spent nuclear fuel. A wash solution and the solvent extraction solution are combined. The wash solution contains (a) water and (b) up to about, and including, 50 vol % of at least one-polar water-miscible organic solvent based on the total volume of the water and the highly-polar organic solvent. The wash solution also preferably contains at least one inorganic salt. The diluent degradation products dissolve in the highly-polar organic solvent and the organic solvent extraction solvent do not dissolve in the highly-polar organic solvent. The highly-polar organic solvent and the extraction solvent are separated.

Neace, J.C.

1984-03-13T23:59:59.000Z

311

Q-balls, Integrability and Duality  

E-Print Network (OSTI)

This paper is concerned with the dynamics and interactions of Q-balls in (1+1)-dimensions. The asymptotic force between well-separated Q-balls is calculated to show that Q-balls can be attractive or repulsive depending upon their relative internal phase. An integrable model with exact multi-Q-ball solutions is investigated and found to be of use in explaining the dynamics in non-integrable theories. In particular, it is demonstrated that the dynamics of small Q-balls in a generic class of non-integrable models tends towards integrable dynamics as the charge decreases. Long-lived oscillations of a single Q-ball can also be understood in terms of a deformation of an exact breather solution in the integrable model. Finally, we show that any theory with Q-ball solutions has a dual description in which a stationary Q-ball is dual to a static kink, with an interchange of Noether and topological charges.

Peter Bowcock; David Foster; Paul Sutcliffe

2009-01-08T23:59:59.000Z

312

DCLL TBM Safety Assessment A key objective for ITER includes integrated testing of blanket concepts suitable for demonstrating fusion  

E-Print Network (OSTI)

. A DCLL TBS Failure Modes and Effects Analysis was summarized and design basis events based on this FMEA

313

The Japan Times Printer Friendly Articles France has won the competition to host the International Thermonuclear Experimental Reactor (ITER), the world's first nuclear-  

E-Print Network (OSTI)

the International Thermonuclear Experimental Reactor (ITER), the world's first nuclear- fusion reactor. Japan fought wins by withdrawing ITER bid Thermonuclear fusion utilizes the same process that powers the sun

314

Chevron Energy Solutions Company ESCO Qualification Sheet  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Chevron Energy Solutions Company, Chevron Energy Solutions Company, a Division of Chevron U.S.A. Inc. ESCO Qualification Sheet DOE Super ESPC Introduction to Chevron Energy Solutions Chevron is a $165 billion U.S. Fortune 3 company employing more than 64,000 professionals in 180 countries. With a Standard and Poor's AA investment-grade credit rating, it is the second-largest U.S.-based energy company and the fourth largest publicly-traded integrated energy company in the world, based on market capitalization. Established in 2000, Chevron ES is one of the most reputable and successful energy services companies in the market, having completed nearly $2 billion in performance contracts with a current annual guaranteed savings portfolio of nearly $317 million. Chevron ES offers customized, comprehensive products and services that help

315

Enisolar Energy Solutions | Open Energy Information  

Open Energy Info (EERE)

Enisolar Energy Solutions Enisolar Energy Solutions Jump to: navigation, search Name Enisolar Energy Solutions Place Istanbul, Turkey Sector Wind energy Product Turkey-based wind, PV, and hybrid system integrator; also provides consultancy. Coordinates 41.040855°, 28.986183° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.040855,"lon":28.986183,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

316

EXPERIMENTALSTUDY OF THE EFFECTIVETHERMAL CONDUCTIVITYOFA PACKED BED AS A TEMPERATURECONTROL MECHANISMFOR ITER CERAMICBREEDERBLANKETDESIGNS *  

E-Print Network (OSTI)

to maximize reli- ability. A novel and practical concept was proposed for the thermal resistance gap between were used as alternate low thermal conductivity gases. With this set of materials, a good range the coolant and solid breeder to allow their operating temperatures to be optimized for ITER.[11 This thermal

Raffray, A. René

317

U.S. PARTICIPATION IN THE ITER TEST BLANKET MODULE (TBM) PROGRAM  

E-Print Network (OSTI)

the first EXPERIMENTAL data on the feasibility of the DT cycle for fusion. A decision on the types of TBMs to evaluating the feasibility, constraints, and potential of the DT cycle for fusion systems (including and the development of fusion energy. TBMs will be inserted in ITER from "Day 1" of its operation and will provide

Abdou, Mohamed

318

Improving DVB-S2 Performance Through Constellation Shaping and Iterative Demapping  

E-Print Network (OSTI)

of increasing average energy and uses a shaping code to select signals from the lower energy sub- constellations more often than the signals from higher energy sub-constellations. Our previous work in [6] on shapingImproving DVB-S2 Performance Through Constellation Shaping and Iterative Demapping Xingyu Xiang

Valenti, Matthew C.

319

Disruption mitigation for ITER Disruptions are sudden unplanned terminations of the plasma that can  

E-Print Network (OSTI)

damage the plasma chamber from thermal loads, high magnetic forces, and runaway electrons. A reliable fast acting tool to mitigate these effects in ITER burning plasmas by the injection of large quantities be located inside a port plug for close proximity to the plasma and fast injection. Multiple injectors can

320

A E Costley ITER Diagnostics, 21st IAEA of 5 slides  

E-Print Network (OSTI)

Barnsley3, K Itami1 T Sugie1 and G Vayakis3 1) ITER International Team, Naka, Ibaraki, 311-0193, Japan 2 of phenomena have to be considered that are new to diagnostic design including: · Radiation-induced conductivity (RIC) · Radiation induced electrical degradation (RIED) · Radiation-induced electromotive force

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Non-iterative joint decoding and signal processing: universal coding approach for channels with memory  

E-Print Network (OSTI)

in an error free manner through the use of a capacity achieving code for a memoryless channel. Computational complexity of the proposed receiver structure is less than that of one iteration of the turbo receiver. We also provide the proof showing...

Nangare, Nitin Ashok

2006-08-16T23:59:59.000Z

322

AN ITERATIVE ROUTE CONSTRUCTION AND IMPROVEMENT ALGORITHM FOR THE VEHICLE ROUTING PROBLEM WITH SOFT  

E-Print Network (OSTI)

time windows exceeds the number of available vehicles, (b) a study of cost-service tradeoffs of available vehicles, (b) a study of cost-service tradeoffs is required, and (c) the dispatcher has1 AN ITERATIVE ROUTE CONSTRUCTION AND IMPROVEMENT ALGORITHM FOR THE VEHICLE ROUTING PROBLEM

Bertini, Robert L.

323

AN ITERATIVE PERTURBATION METHOD FOR THE PRESSURE EQUATION IN THE SIMULATION OF MISCIBLE DISPLACEMENT  

E-Print Network (OSTI)

AN ITERATIVE PERTURBATION METHOD FOR THE PRESSURE EQUATION IN THE SIMULATION OF MISCIBLE by water- flooding. Since the tertiary process requires expensive chemicals and the performance of the displacement is not guaranteed, its numerical simulation plays an important role in determining whether enough

Lin, Ping

324

Synthesizing Representative I/O Workloads Using Iterative Distillation Zachary Kurmas  

E-Print Network (OSTI)

Synthesizing Representative I/O Workloads Using Iterative Distillation Zachary Kurmas College proper- ties are "key" for a given workload and storage system. We have developed a tool, the Distiller, that automati- cally identifies the key properties ("attribute-values") of the workload. The Distiller then uses

Kurmas, Zachary

325

State-of-the-art in Chaotic Iterations based pseudorandom numbers generators Application in Information Hiding  

E-Print Network (OSTI)

State-of-the-art in Chaotic Iterations based pseudorandom numbers generators Application requires an intensive use of pseudoran- dom number generators having strong security properties. For instance, these generators are used to produce encryption keys, to encrypt data with a one-time pad process

Paris-Sud XI, Université de

326

Evolution of cooperation, differentiation, complexity, and diversity in an iterated three-person game  

Science Journals Connector (OSTI)

A nonzero-sum three-person coalition game is presented to study the evolution of complexity and diversity in cooperation, where the population dynamics of players with strategies is given according to their scores in the iterated game and mutations. ...

Eizo Akiyama; Kunihiko Kaneko

1995-01-01T23:59:59.000Z

327

ITER-like wall sliced beryllium tiles The JET Enhanced Performance 2 (EP2) shutdown  

E-Print Network (OSTI)

ITER-like wall sliced beryllium tiles Background The JET Enhanced Performance 2 (EP2) shutdown and remote handling equipment. JET remote handling systems #12;Outcome The EP2 shutdown was successful of the remote handling system are compatible with the required component manipulation. Pre EP2 shutdown Mid

328

Improved Confinement in JET High {beta} Plasmas with an ITER-Like Wall  

E-Print Network (OSTI)

The replacement of the JET carbon wall (C-wall) by a Be/W ITER-like wall (ILW) has affected the plasma energy confinement. To investigate this, experiments have been performed with both the C-wall and ILW to vary the heating power over a wide range for plasmas with different shapes.

Challis, C D; Beurskens, M; Buratti, P; Delabie, E; Drewelow, P; Frassinetti, L; Giroud, C; Hawkes, N; Hobirk, J; Joffrin, E; Keeling, D; King, D B; Maggi, C F; Mailloux, J; Marchetto, C; McDonald, D; Nunes, I; Pucella, G; Saarelma, S; Simpson, J

2015-01-01T23:59:59.000Z

329

Paradigm Changes in High Temperature Plasma Physics Research and Implications for ITER  

SciTech Connect

Significant high temperature plasma research in both the magnetic and inertial confinement regimes led to the official launching of the International Thermonuclear Experimental Reactor (ITER) project which is aimed at challenging controlled fusion power for human kind. In particular, such an endeavor originated from the fruitful research outcomes from the world wide magnetic confinement devices (primarily based on the Tokamak approach) mainly in advanced countries (US, EU, and Japan). In recent years, all new steady state capable Tokamak devices are operated and/or constructed in Asian countries and incidentally, the majority of the ITER consortium consists of Asian countries. This provides an opportunity to revisit the unresolved essential physics issues and/or extend the understanding of the transient physics to the required steady state operation so that ITER can benefit from these efforts. The core physics of a magnetically confined hot plasma has two essential components; plasma stability and cross-field energy transport physics. Complete understanding of these two areas is critical for the successful operation of ITER and perhaps, Demo reactor construction. In order to have stable high beta plasmas with a sufficiently long confinement time, the physics of an abrupt disruption and sudden deterioration of the energy transport must be understood and conquered. Physics issues associated with transient harmful MHD behavior and turbulence based energy transport are extremely complicated and theoretical understanding needs a clear validation and verification with a new research approach such as a multi-dimensional visualization.

Hyeon K. Park

2008-02-22T23:59:59.000Z

330

HEART SEGMENTATION WITH AN ITERATIVE CHAN-VESE OLIVIER ROUSSEAU, YVES BOURGAULT  

E-Print Network (OSTI)

HEART SEGMENTATION WITH AN ITERATIVE CHAN-VESE ALGORITHM OLIVIER ROUSSEAU, YVES BOURGAULT Abstract. This paper presents 2D and 3D applications of the Chan-Vese model to heart and trachea segmentation. We is to segment the heart muscle from high resolution CT scans of the thorax and to produce meshes

Paris-Sud XI, Université de

331

SCUBA-2: iterative map-making with the Sub-Millimetre User Reduction Facility  

Science Journals Connector (OSTI)

......Agricultural Road, Vancouver...the instrument design, performance...slowly than the crossing times for the...experimental designs fast iterative...such as the pipeline recipe for fitting...smurf to run in a pipeline setting without...the Critical Design Review panel......

Edward L. Chapin; David S. Berry; Andrew G. Gibb; Tim Jenness; Douglas Scott; Remo P. J. Tilanus; Frossie Economou; Wayne S. Holland

2013-01-01T23:59:59.000Z

332

Generics, habituals, and iteratives Sentences may express information about particular events, such as  

E-Print Network (OSTI)

cough or flap (a wing)'. In English, John coughed can be understood as saying that he coughed once implications, especially those of intensity and/or prolongation. In English, John coughed and coughed is iterative in interpretation, like one understanding of the simple John coughed, but in addition implies

Makous, Walter

333

Iterative methods for neutron transport eigenvalue Fynn Scheben and Ivan G. Graham  

E-Print Network (OSTI)

, modelling transport, scattering and fission, where the dependent variable is the neutron angular fluxIterative methods for neutron transport eigenvalue problems Fynn Scheben and Ivan G. Graham Bath METHODS FOR NEUTRON TRANSPORT EIGENVALUE PROBLEMS FYNN SCHEBEN AND IVAN G. GRAHAM Abstract. We discuss

Graham, Ivan

334

Iterative method for evaluating the matrix representation of the generators in the unitary-group approach  

Science Journals Connector (OSTI)

An iterative method is presented for the evaluation of the matrix representation of the group generators in the unitary-group approach to many-electron systems. The method yields, in addition, closed-form expressions and selection rules for nonvanishing matrix elements. Generator products (two-body operators) are treated by a scalar-product method.

A. Lev; M. Schlesinger; R. D. Kent

1984-12-01T23:59:59.000Z

335

Coherence and Conservatism in the Dynamics of Belief II: Iterated Belief Change without Dispositional Coherence  

Science Journals Connector (OSTI)

......University Press 2003 Original Article Coherence and Conservatism in the Dynamics of Belief...Iterated Belief Change without Dispositional Coherence Hans Rott 1 1 Department of Philosophy...based on the conclusions of Rott, Coherence and Conservatism in the Dynamics of Belief......

Hans Rott

2003-02-01T23:59:59.000Z

336

Coherence and Conservatism in the Dynamics of Belief II: Iterated Belief Change  

E-Print Network (OSTI)

Coherence and Conservatism in the Dynamics of Belief II: Iterated Belief Change Without Dispositional Coherence Hans Rott 3 April 2002, 17:07 1 Introduction Part I of this paper (Rott 1999) has argued of coherence that are (partially) encoded by them. We noticed that contrary to the common opin- ion

Schubart, Christoph

337

ADAPTIVE REGULARIZED SELF-CONSISTENT FIELD ITERATION WITH EXACT HESSIAN FOR ELECTRONIC STRUCTURE CALCULATION  

E-Print Network (OSTI)

18, 65K10, 65F15, 90C26, 90C30 1. Introduction. Electronic structure calculations have becomeADAPTIVE REGULARIZED SELF-CONSISTENT FIELD ITERATION WITH EXACT HESSIAN FOR ELECTRONIC STRUCTURE CALCULATION ZAIWEN WEN, ANDRE MILZAREK, MICHAEL ULBRICH, AND HONGCHAO ZHANGďż˝ Abstract. The self

Ulbrich, Michael

338

A remotely steered millimetre wave launcher for electron cyclotron heating and current drive on ITER  

Science Journals Connector (OSTI)

High-power millimetre wave beams employed on ITER for heating and current drive at the 170 GHz electron cyclotron resonance frequency require agile steering and tight focusing of the beams to suppress neoclassical tearing modes. This paper presents experimental validation of the remote steering (RS) concept of the ITER upper port millimetre wave beam launcher. Remote steering at the entrance of the upper port launcher rather than at the plasma side offers advantages in reliability and maintenance of the mechanically vulnerable steering system. A one-to-one scale mock-up consisting of a transmission line, mitre bends, remote steering unit, vacuum window, square corrugated waveguide and front mirror simulates the ITER launcher design configuration. Validation is based on low-power heterodyne measurements of the complex amplitude and phase distribution of the steered Gaussian beam. High-power (400 kW) short pulse (10 ms) operation under vacuum, diagnosed by calorimetry and thermography of the near- and far-field beam patterns, confirms high-power operation, but shows increased power loss attributed to deteriorating input beam quality compared with low-power operation. Polarization measurements show little variation with steering, which is important for effective current drive requiring elliptical polarization for O-mode excitation. Results show that a RS range of up to ?12° to +12° can be achieved with acceptable beam quality. These measurements confirm the back-up design of the ITER ECRH&CD launcher with future application for DEMO.

W.A. Bongers; M.F. Graswinckel; A.P.H. Goede; W. Kasparek; I. Danilov; Á. Fernández Curto; M.R. de Baar; M.A. van den Berg; A.J.H. Donné; B.S.Q. Elzendoorn; R. Heidinger; P. Ivanov; O.G. Kruijt; B. Lamers; A. Meier; B. Piosczyk; B. Plaum; D.M.S. Ronden; D.J. Thoen; M. Schmid; A.G.A. Verhoeven

2010-01-01T23:59:59.000Z

339

Electron-cyclotron wave scattering by edge density fluctuations in ITER Christos Tsironis,1,2  

E-Print Network (OSTI)

influence on localized heating and current drive. A wave used for electron-cyclotron current drive ECCD must. doi:10.1063/1.3264105 I. INTRODUCTION In the electron-cyclotron resonance heating ECRH sys- temElectron-cyclotron wave scattering by edge density fluctuations in ITER Christos Tsironis,1

Isliker, Heinz

340

Mixed-level embedding and JIT compilation for an iteratively staged DSL  

Science Journals Connector (OSTI)

This paper explores how to implement an iteratively staged domain-specific language (DSL) by embedding into a functional language. The domain is modelling and simulation of physical systems where models are expressed in terms of non-causal differential-algebraic ...

George Giorgidze; Henrik Nilsson

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Fabrication of the First US ITER TF Conductor Sample for Qualification in SULTAN Facility  

E-Print Network (OSTI)

A pair of 3.5 m long ITER TF size straight conductors has been fabricated into a conductor short sample and submitted to the SULTAN facility at CRPP for cold test. The sample used a triplet-based cabling pattern in one leg ...

Miller, John R.

342

Japan ready to pay 895 million dollars more to host ITER project: report  

E-Print Network (OSTI)

Japan ready to pay 895 million dollars more to host ITER project: report 26 May 2004 Japan the deadlock between Japan and the European Union over the venue of the International Thermonuclear in the 10-billion-dollar project are the European Union, Japan, China, Russia, South Korea and the United

343

Small Mock-Up Fabrication and High Heat Flux Test for Preparing the 2nd Qualification of the ITER Blanket First Wall  

Science Journals Connector (OSTI)

ITER Systems / Proceedings of the Nineteenth Topical Meeting on the Technology of Fusion Energy (TOFE) (Part 1)

Dong Won Lee; Suk Kwon Kim; Young-Dug Bae; Yang Il Jung; Jeong Yong Park; Yong Hwan Jeong; Byung Yoon Kim

344

Residential Buildings Integration Program  

Energy.gov (U.S. Department of Energy (DOE))

Residential Buildings Integration Program Presentation for the 2013 Building Technologies Office's Program Peer Review

345

The Path to the Building Integrated Photovoltaics of Tomorrow  

Science Journals Connector (OSTI)

Building integrated photovoltaic (BIPV) systems may represent a powerful and versatile tool for achieving the ever increasing demand for zero energy and zero emission buildings of the near future, offering an aesthetical, economical and technical solution to integrate solar cells producing electricity within the climate envelopes of buildings. This work addresses possible research opportunities and pathways for the \\{BIPVs\\} of tomorrow.

Bjřrn Petter Jelle; Christer Breivik

2012-01-01T23:59:59.000Z

346

Integration of Distributed Energy The CERTS MicroGrid Concept  

E-Print Network (OSTI)

Integration of Distributed Energy Resources The CERTS MicroGrid Concept CALIFORNIA ENERGY are being challenged to maintain the reliability of the grid and support economic transfers of power Consortium for Electric Reliability Technology Solutions White Paper on Integration of Distributed Energy

347

A laser scanning system for metrology and viewing in ITER  

SciTech Connect

The construction and operation of a next-generation fusion reactor will require metrology to achieve and verify precise alignment of plasma-facing components and inspection in the reactor vessel. The system must be compatible with the vessel environment of high gamma radiation (10{sup 4} Gy/h), ultra-high-vacuum (10{sup {minus}8} torr), and elevated temperature (200 C). The high radiation requires that the system be remotely deployed. A coherent frequency modulated laser radar-based system will be integrated with a remotely operated deployment mechanism to meet these requirements. The metrology/viewing system consists of a compact laser transceiver optics module which is linked through fiber optics to the laser source and imaging units that are located outside of a biological shield. The deployment mechanism will be a mast-like positioning system. Radiation-damage tests will be conducted on critical sensor components at Oak Ridge National Laboratory to determine threshold damage levels and effects on data transmission. This paper identifies the requirements for International Thermonuclear Experimental Reactor metrology and viewing and describes a remotely operated precision ranging and surface mapping system.

Spampinato, P.T.; Barry, R.E.; Menon, M.M.; Herndon, J.N. [Oak Ridge National Lab., TN (United States); Dagher, M.A.; Maslakowski, J.E. [Rockwell Rocketdyne Div., Canoga Park, CA (United States)

1996-05-01T23:59:59.000Z

348

Iterative acceleration methods for Monte Carlo and deterministic criticality calculations  

SciTech Connect

If you have ever given up on a nuclear criticality calculation and terminated it because it took so long to converge, you might find this thesis of interest. The author develops three methods for improving the fission source convergence in nuclear criticality calculations for physical systems with high dominance ratios for which convergence is slow. The Fission Matrix Acceleration Method and the Fission Diffusion Synthetic Acceleration (FDSA) Method are acceleration methods that speed fission source convergence for both Monte Carlo and deterministic methods. The third method is a hybrid Monte Carlo method that also converges for difficult problems where the unaccelerated Monte Carlo method fails. The author tested the feasibility of all three methods in a test bed consisting of idealized problems. He has successfully accelerated fission source convergence in both deterministic and Monte Carlo criticality calculations. By filtering statistical noise, he has incorporated deterministic attributes into the Monte Carlo calculations in order to speed their source convergence. He has used both the fission matrix and a diffusion approximation to perform unbiased accelerations. The Fission Matrix Acceleration method has been implemented in the production code MCNP and successfully applied to a real problem. When the unaccelerated calculations are unable to converge to the correct solution, they cannot be accelerated in an unbiased fashion. A Hybrid Monte Carlo method weds Monte Carlo and a modified diffusion calculation to overcome these deficiencies. The Hybrid method additionally possesses reduced statistical errors.

Urbatsch, T.J.

1995-11-01T23:59:59.000Z

349

Nyström method for Cauchy singular integral equations with negative index  

Science Journals Connector (OSTI)

In this paper, the authors propose a Nystrom method to approximate the solutions of Cauchy singular integral equations with constant coefficients having a negative index. They consider the equations in spaces of continuous functions with weighted uniform ... Keywords: 41A05, 41A10, 45E05, 65R20, Cauchy singular integral equations, Condition number, Fredholm integral equations, Gaussian quadrature rule, Lagrange interpolation, Nyström method

M. C. De Bonis; C. Laurita

2009-10-01T23:59:59.000Z

350

Future Climate Engineering Solutions  

E-Print Network (OSTI)

Engineering Associations from around the world are part of the project `Future Climate - Engineering Solu- tions'. Within the project the participating associations have been developing national climate plansFuture Climate Engineering Solutions Joint report 13 engineering participating engeneering

351

Selected Solution 7  

E-Print Network (OSTI)

Selected Solutions. Math 341 Homework 7*. November 4, 2014. 1. (Alternating Series Test.) Take zn = 1/n2. Show that s2n = (z1 ? z2)+(z3 ? z4) + ··· + z2n?1 ...

2014-11-04T23:59:59.000Z

352

Osmosis with active solutes  

E-Print Network (OSTI)

Despite much current interest in active matter, little is known about osmosis in active systems. Using molecular dynamics simulations, we investigate how active solutes perturb osmotic steady states. We find that solute activity increases the osmotic pressure, and can also expel solvent from the solution - i.e. cause reverse osmosis. The latter effect cannot be described by an effective temperature, but can be reproduced by mapping the active solution onto a passive one with the same degree of local structuring as the passive solvent component. Our results provide a basic framework for understanding active osmosis, and suggest that activity-induced structuring of the passive component may play a key role in the physics of active-passive mixtures.

Thomas W. Lion; Rosalind J. Allen

2014-02-06T23:59:59.000Z

353

Osmosis with active solutes  

E-Print Network (OSTI)

Despite much current interest in active matter, little is known about osmosis in active systems. Using molecular dynamics simulations, we investigate how active solutes perturb osmotic steady states. We find that solute activity increases the osmotic pressure, and can also expel solvent from the solution - i.e. cause reverse osmosis. The latter effect cannot be described by an effective temperature, but can be reproduced by mapping the active solution onto a passive one with the same degree of local structuring as the passive solvent component. Our results provide a basic framework for understanding active osmosis, and suggest that activity-induced structuring of the passive component may play a key role in the physics of active-passive mixtures.

Lion, Thomas W

2014-01-01T23:59:59.000Z

354

Well performance under solutions gas drive  

SciTech Connect

A fully implicit black-oil simulator was written to predict the drawdown and buildup responses for a single well under Solution Gas Drive. The model is capable of handling the following reservoir behaviors: Unfractured reservoir, Double-Porosity system, and Double Permeability-Double Porosity model of Bourdet. The accuracy of the model results is tested for both single-phase liquid flow and two-phase flow. The results presented here provide a basis for the empirical equations presented in the literature. New definitions of pseudopressure and dimensionless time are presented. By using these two definitions, the multiphase flow solutions correlate with the constant rate liquid flow solution for both transient and boundary-dominated flow. For pressure buildup tests, an analogue for the liquid solution is constructed from the drawdown pseudopressure, similar to the reservoir integral of J. Jones. The utility of using the producing gas-oil ration at shut in to compute pseudopressures and pseudotimes is documented. The influence of pressure level and skin factor on the Inflow Performance Relationship (IPR) of wells producing solution gas drive systems is examined. A new definition of flow efficiency that is based on the structure of the deliverability equations is proposed. This definition avoids problems that result when the presently available methods are applied to heavily stimulated wells. The need for using pseudopressures to analyze well test data for fractured reservoirs is shown. Expressions to compute sandface saturations for fractured systems are presented.

Camacho-Velazquez, R.G.

1987-01-01T23:59:59.000Z

355

Buried waste integrated demonstration technology integration process  

SciTech Connect

A Technology integration Process was developed for the Idaho National Energy Laboratories (INEL) Buried Waste Integrated Demonstration (BWID) Program to facilitate the transfer of technology and knowledge from industry, universities, and other Federal agencies into the BWID; to successfully transfer demonstrated technology and knowledge from the BWID to industry, universities, and other Federal agencies; and to share demonstrated technologies and knowledge between Integrated Demonstrations and other Department of Energy (DOE) spread throughout the DOE Complex. This document also details specific methods and tools for integrating and transferring technologies into or out of the BWID program. The document provides background on the BWID program and technology development needs, demonstrates the direction of technology transfer, illustrates current processes for this transfer, and lists points of contact for prospective participants in the BWID technology transfer efforts. The Technology Integration Process was prepared to ensure compliance with the requirements of DOE`s Office of Technology Development (OTD).

Ferguson, J.S.; Ferguson, J.E.

1992-04-01T23:59:59.000Z

356

Buried waste integrated demonstration technology integration process  

SciTech Connect

A Technology integration Process was developed for the Idaho National Energy Laboratories (INEL) Buried Waste Integrated Demonstration (BWID) Program to facilitate the transfer of technology and knowledge from industry, universities, and other Federal agencies into the BWID; to successfully transfer demonstrated technology and knowledge from the BWID to industry, universities, and other Federal agencies; and to share demonstrated technologies and knowledge between Integrated Demonstrations and other Department of Energy (DOE) spread throughout the DOE Complex. This document also details specific methods and tools for integrating and transferring technologies into or out of the BWID program. The document provides background on the BWID program and technology development needs, demonstrates the direction of technology transfer, illustrates current processes for this transfer, and lists points of contact for prospective participants in the BWID technology transfer efforts. The Technology Integration Process was prepared to ensure compliance with the requirements of DOE's Office of Technology Development (OTD).

Ferguson, J.S.; Ferguson, J.E.

1992-04-01T23:59:59.000Z

357

Finite Action Yang-Mills Solutions on the Group Manifold  

E-Print Network (OSTI)

We demonstrate that the left (and right) invariant Maurer-Cartan forms for any semi-simple Lie group enable one to construct solutions of the Yang-Mills equations on the group manifold equipped with the natural Cartan-Killing metric. For the unitary unimodular groups the Yang-Mills action integral is finite for such solutions. This is explicitly exhibited for the case of $SU(3)$.

T Dereli; J Schray; Robin W Tucker

1996-05-17T23:59:59.000Z

358

Energy Systems Integration  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Systems Integration Systems Integration Ben Kroposki, PhD, PE Director, Energy Systems Integration National Renewable Energy Laboratory 2 Reducing investment risk and optimizing systems in a rapidly changing energy world * Increasing penetration of variable RE in grid * Increasing ultra high energy efficiency buildings and controllable loads * New data, information, communications and controls * Electrification of transportation and alternative fuels * Integrating energy storage (stationary and mobile) and thermal storage * Interactions between electricity/thermal/fuels/data pathways * Increasing system flexibility and intelligence Current Energy Systems Future Energy Systems Why Energy Systems Integration? 3 Energy Systems Integration Continuum Scale Appliance (Plug)

359

Science and Technology Research and Development in Support to ITER and the Broader Approach at CEA  

SciTech Connect

In parallel to the direct contribution to the procurement phase of ITER and Broader Approach, CEA has initiated research & development programmes, accompanied by experiments together with a significant modelling effort, aimed at ensuring robust operation, plasma performance, as well as mitigating the risks of the procurement phase. This overview reports the latest progress in both fusion science and technology including many areas, namely the mitigation of superconducting magnet quenches, disruption-generated runaway electrons, edge-localized modes (ELMs), the development of imaging surveillance, and heating and current drive systems for steady-state operation. The WEST (W Environment for Steady-state Tokamaks) project, turning Tore Supra into an actively cooled W-divertor platform open to the ITER partners and industries, is presented.

Becoulet, A. [French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance] [French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance; Hoang, G T [French Atomic Energy Commission (CEA), Institute for Magnetic Fusion Research (IRFM)] [French Atomic Energy Commission (CEA), Institute for Magnetic Fusion Research (IRFM); Abiteboul, J. [French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance] [French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance; Achard, J. [French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance] [French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance; Alarcon, T. [French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance] [French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance; Klepper, C Christopher [ORNL] [ORNL

2013-01-01T23:59:59.000Z

360

Coupling characteristics of the ITER relevant lower hybrid antenna in Tore Supra: experiments and modelling  

SciTech Connect

A new concept of lower hybrid antenna for current drive has been proposed for ITER [Bibet et al, Nuclear Fusion 1995]: the Passive Active Multijunction (PAM) antenna that relies on a periodic combination of active and passive waveguides. An actively cooled PAM antenna at 3.7 GHz has been recently installed on the tokamak Tore Supra. The paper summarizes the comprehensive experimental characterization of the linear coupling properties of the PAM antenna to the Tore Supra plasmas. These experimental results are systematically compared with the linear wave coupling theory via the linear ALOHA code. Good agreement between experimental results and ALOHA have been obtained. The detailed validation of the coupling modelling is an important step toward the validation of the PAM concept in view of further optimizing the electromagnetic properties of the future ITER antenna.

Preynas, M.; Ekedahl, A.; Fedorczak, N.; Goniche, M.; Guilhem, D.; Gunn, J. P.; Hillairet, J.; Litaudon, X. [CEA, IRFM, 13108 Saint Paul lez Durance (France); Associacao Euratom-IST, Centro de Fusao Nuclear 1049-001 Lisboa (Portugal)

2011-12-23T23:59:59.000Z

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

In-Vessel Coil Material Failure Rate Estimates for ITER Design Use  

SciTech Connect

The ITER international project design teams are working to produce an engineering design for construction of this large tokamak fusion experiment. One of the design issues is ensuring proper control of the fusion plasma. In-vessel magnet coils may be needed for plasma control, especially the control of edge localized modes (ELMs) and plasma vertical stabilization (VS). These coils will be lifetime components that reside inside the ITER vacuum vessel behind the blanket modules. As such, their reliability is an important design issue since access will be time consuming if any type of repair were necessary. The following chapters give the research results and estimates of failure rates for the coil conductor and jacket materials to be used for the in-vessel coils. Copper and CuCrZr conductors, and stainless steel and Inconel jackets are examined.

L. C. Cadwallader

2013-01-01T23:59:59.000Z

362

Irradiation tests of ITER candidate Hall sensors using two types of neutron spectra  

SciTech Connect

We report on irradiation tests of InSb based Hall sensors at two irradiation facilities with two distinct types of neutron spectra. One was a fission reactor neutron spectrum with a significant presence of thermal neutrons, while another one was purely fast neutron field. Total neutron fluence of the order of 10{sup 16} cm{sup -2} was accumulated in both cases, leading to significant drop of Hall sensor sensitivity in case of fission reactor spectrum, while stable performance was observed at purely fast neutron spectrum. This finding suggests that performance of this particular type of Hall sensors is governed dominantly by transmutation. Additionally, it further stresses the need to test ITER candidate Hall sensors under neutron flux with ITER relevant spectrum.

Duran, I. [Institute of Plasma Physics AS CR, v. v. i., Association EURATOM/IPP.CR, 182 00 Prague 8 (Czech Republic); Bolshakova, I.; Holyaka, R. [Magnetic Sensor Laboratory, Lviv Polytechnic National University, 790 31 Lviv (Ukraine); Viererbl, L.; Lahodova, Z. [Nuclear Research Institute plc., 250 68 Husinec-Rez (Czech Republic); Sentkerestiova, J. [Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, 115 19 Prague 1 (Czech Republic); Bem, P. [Nuclear Physics Institute AS CR, v. v. i., 250 68 Husinec-Rez (Czech Republic)

2010-10-15T23:59:59.000Z

363

Clover Action for Blue Gene-Q and Iterative solvers for DWF  

E-Print Network (OSTI)

In Lattice QCD, a major challenge in simulating physical quarks is the computational complexity of these simulations. In this proceeding, we describe the optimisation of Clover fermion action for Blue gene-Q architecture and how different iterative solvers behave for Domain Wall Fermion action. We find that the optimised Clover term achieved a maximum efficiency of 29.1% and 20.2% for single and double precision respectively for iterative Conjugate Gradient solver. For Domain Wall Fermion action (DWF) we found that Modified Conjugate Residual(MCR) as the most efficient solver compared to CG and GCR. We have developed a new multi-shift MCR algorithm that is 18.5% faster compared to multi-shift CG for the evaluation of rational functions in RHMC.

Karthee Sivalingam; Peter Boyle

2014-08-28T23:59:59.000Z

364

Effect of turbulence on electron cyclotron current drive and heating in ITER  

E-Print Network (OSTI)

Non-linear local electromagnetic gyrokinetic turbulence simulations of the ITER standard scenario H-mode are presented for the q=3/2 and q=2 surfaces. The turbulent transport is examined in regions of velocity space characteristic of electrons heated by electron cyclotron waves. Electromagnetic fluctuations and sub-dominant micro-tearing modes are found to contribute significantly to the transport of the accelerated electrons, even though they have only a small impact on the transport of the bulk species. The particle diffusivity for resonant passing electrons is found to be less than 0.15 m^2/s, and their heat conductivity is found to be less than 2 m^2/s. Implications for the broadening of the current drive and energy deposition in ITER are discussed.

Casson, F J; Angioni, C; Buchholz, R; Peeters, A G

2014-01-01T23:59:59.000Z

365

INTEGRATING PHOTOVOLTAIC SYSTEMS  

E-Print Network (OSTI)

INTEGRATING PHOTOVOLTAIC SYSTEMS INTO PUBLIC SECTOR PERFORMANCE CONTRACTS IN DELAWARE FINAL for Energy and Environmental Policy University of Delaware February 2006 #12;INTEGRATING PHOTOVOLTAIC..................................................................................................... 1 1.2 Photovoltaics in Performance Contracts: An Overview

Delaware, University of

366

A simple and direct method for generating travelling wave solutions for nonlinear equations  

SciTech Connect

We propose a simple and direct method for generating travelling wave solutions for nonlinear integrable equations. We illustrate how nontrivial solutions for the KdV, the mKdV and the Boussinesq equations can be obtained from simple solutions of linear equations. We describe how using this method, a soliton solution of the KdV equation can yield soliton solutions for the mKdV as well as the Boussinesq equations. Similarly, starting with cnoidal solutions of the KdV equation, we can obtain the corresponding solutions for the mKdV as well as the Boussinesq equations. Simple solutions of linear equations can also lead to cnoidal solutions of nonlinear systems. Finally, we propose and solve some new families of KdV equations and show how soliton solutions are also obtained for the higher order equations of the KdV hierarchy using this method.

Bazeia, D. [Departamento de Fisica, Universidade Federal da Paraiba, 58051-970 Joao Pessoa, PB (Brazil)], E-mail: bazeia@fisica.ufpb.br; Das, Ashok [Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627-0171 (United States); Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Calcutta 700064 (India); Losano, L. [Departamento de Fisica, Universidade Federal da Paraiba, 58051-970 Joao Pessoa, PB (Brazil); Silva, A. [Departamento de Fisica, Universidade Federal da Paraiba, 58051-970 Joao Pessoa, PB (Brazil); Departamento de Fisica, Universidade Estadual da Paraiba, Campina Grande, PB (Brazil)

2008-05-15T23:59:59.000Z

367

Transmission Commercial Project Integration  

NLE Websites -- All DOE Office Websites (Extended Search)

Improvement (CBPI) Customer Forum Energy Imbalance Market Generator Interconnection Reform Implementation Network Integration Transmission Service (NT Service) Network Open...

368

NREL: Continuum Magazine - NREL's Energy Systems Integration Supporting  

NLE Websites -- All DOE Office Websites (Extended Search)

NREL's Energy Systems Integration Supporting Facilities NREL's Energy Systems Integration Supporting Facilities Issue 4 Print Version Share this resource NREL's Energy Systems Integration Supporting Facilities Five recently constructed facilities prove clean technology performance for tomorrow's energy systems. A photo of the Energy Systems Integration Facility at NREL. Enlarge image NREL's Energy Systems Integration Facility opened in December, 2012. Photo by Dennis Schroeder The National Renewable Energy Laboratory (NREL) recognizes energy systems integration's (ESI) growing importance in designing and managing the energy systems of the near future. A major factor in understanding systems integration issues and solutions is developing research facilities that can evaluate new technologies in a full-system context. To that end, several of

369

F-Race and Iterated F-Race: An Overview Mauro Birattari, Zhi Yuan, Prasanna Balaprakash, and Thomas Sttzle  

E-Print Network (OSTI)

Chapter 13 F-Race and Iterated F-Race: An Overview Mauro Birattari, Zhi Yuan, Prasanna Balaprakash search algorithms in Mauro Birattari · Zhi Yuan · Prasanna Balaprakash · Thomas Stützle IRIDIA, Co

Birattari, Mauro

370

Going with the group in a competitive game of iterated reasoning Seth Frey (sethfrey@indiana.edu)  

E-Print Network (OSTI)

Going with the group in a competitive game of iterated reasoning Seth Frey (sethfrey their strategy individually. John Nash proved that every game has at least one such equilib- rium. Mapped onto

Goldstone, Robert

371

Detailed search US supports Japanese bid to host ITER as France urges Europe to go it alone  

E-Print Network (OSTI)

support of his country for the Japanese bid to host the international thermonuclear site (ITER thermonuclear site if the French candidate is not selected for the international project. However

372

Characteristics of the Arrangement of the Cooling Water Piping System for ITER and Fusion Reactor Power Station  

Science Journals Connector (OSTI)

The ITER has been designed to demonstrate the scientific and technical feasibility of nuclear fusion energy conversion using the tokamak magnetic machine. ... experience will guide the realization of a future fusion

K. P. Chang; Ingo Kuehn; W. Curd…

2008-01-01T23:59:59.000Z

373

Lessons learnt from ITER safety & licensing for DEMO and future nuclear fusion facilities  

E-Print Network (OSTI)

One of the strong motivations for pursuing the development of fusion energy is its potentially low environmental impact and very good safety performance. But this safety and environmental potential can only be fully realized by careful design choices. For DEMO and other fusion facilities that will require nuclear licensing, S&E objectives and criteria should be set at an early stage and taken into account when choosing basic design options and throughout the design process. Studies in recent decades of the safety of fusion power plant concepts give a useful basis on which to build the S&E approach and to assess the impact of design choices. The experience of licensing ITER is of particular value, even though there are some important differences between ITER and DEMO. The ITER project has developed a safety case, produced a preliminary safety report and had it examined by the French nuclear safety authorities, leading to the licence to construct the facility. The key technical issues that arose during ...

Taylor, Neill

2013-01-01T23:59:59.000Z

374

Progress in engineering design of Indian LLCB TBM set for testing in ITER  

Science Journals Connector (OSTI)

Abstract The Indian Lead–Lithium Ceramic Breeder (LLCB) Test Blanket Module (TBM) is the Indian DEMO relevant blanket module, as a part of the TBM program in ITER. The LLCB TBM will be tested from the first phase of ITER operation in one-half of an ITER port no. 2. LLCB TBM-set consists of LLCB TBM module and shield block, which are attached with the help of attachment systems. This LLCB TBM set is inserted in a water-cooled stainless steel frame called ‘TBM frame’, which also provides the separation between the neighboring TBM-sets (Chinese TBM set) in port no. 2. In LLCB TBM, high-pressure helium gas is used to cool the first wall (FW) structure and lead–lithium eutectic (Pb–Li) flowing separately around the ceramic breeder (CB) pebble bed to cool the TBM internals which are heated due to the volumetric neutron heating during plasma operation. Low-pressure helium is purged inside the CB zones to extract the bred tritium. Thermal-structural analyses have been performed independently on LLCB TBM and shield block for TBM set using ANSYS. This paper will also describe the performance analysis of individual components of LLCB TBM set and their different configurations to optimize their performances.

Paritosh Chaudhuri; S. Ranjithkumar; Deepak Sharma; Chandan Danani; H.L. Swami; R. Bhattacharya; Anita Patel; E. Rajendra Kumar; K.N. Vyas

2014-01-01T23:59:59.000Z

375

Modeling an Unmitigated Quench Event in an ITER Toroidal Field Magnet  

SciTech Connect

An unmitigated quench of a toroidal field (TF) magnet has been proposed as an extremely unlikely event for International Thermonuclear Experimental Reactor (ITER) Engineering Design Activity safety analysis. While the frequency of such an event is highly improbable (<1 x 10{sup -6}/yr), the public safety consequences of this event must be explored because the TF magnets are located midway between the two primary confinement barriers of the ITER design. These confinement barriers are the vacuum vessel (VV) and the cryostat. An unmitigated quench has the potential for producing melting of the magnet. If molten material from the magnet were to impinge on the walls of the VV and cryostat, these walls could fail, resulting in a pathway for release of radioactive material to the environment from the VV. A model has been developed at the Idaho National Engineering and Environmental Laboratory called MAGARC to investigate the consequences of this accident. This model is described in detail, and results from this model used in ITER safety analysis are presented.

Merrill, Brad J. [Idaho National Engineering and Environmental Laboratory (United States)

2000-05-15T23:59:59.000Z

376

Modeling an unmitigated quench event in an ITER torodial field magnet  

SciTech Connect

An unmitigated quench of a toroidal field (TF) magnet has been proposed as an extremely unlikely event for International Thermonuclear Experimental Reactor (ITER) Engineering Design Activity safety analysis. While the frequency of such an event is highly improbable (<1 x 10{sup {minus}6}/yr), the public safety consequences of this event must be explored because the TF magnets are located midway between the two primary confinement barriers of the ITER design. These confinement barriers are the vacuum vessel (VV) and the cryostat. An unmitigated quench has the potential for producing melting of the magnet. If molten material from the magnet were to impinge on the walls of the VV and cryostat, these walls could fail, resulting in a pathway for release of radioactive material to the environment from the VV. A model has been developed in the Idaho National Engineering and Environmental Laboratory called MAGARC to investigate the consequences of this accident. This model is described in detail, and results from this model used in ITER safety analysis are presented.

Merrill, B.J.

2000-05-01T23:59:59.000Z

377

Shut-down dose rate analyses for the ITER electron cyclotron-heating upper launcher  

Science Journals Connector (OSTI)

Abstract The electron cyclotron resonance heating upper launcher (ECHUL) is going to be installed in the upper port of the ITER tokamak thermonuclear fusion reactor for plasma mode stabilization (neoclassical tearing modes and the sawtooth instability). The paper reports the latest neutronic modeling and analyses which have been performed for the ITER reference front steering launcher design. It focuses on the port accessibility after reactor shut-down for which dose rate (SDDR) distributions on a fine regular mesh grid were calculated. The results are compared to those obtained for the ITER Dummy Upper Port. The calculations showed that the heterogeneous ECHUL design gives rise to enhanced radiation streaming as compared to the homogenous dummy upper port. Therefore the used launcher geometry was upgraded to a more recent development stage. The inter-comparison shows a significant improvement of the launchers shielding properties but also the necessity to further upgrade the shielding performance. Furthermore, the analysis for the homogenous dummy upper port, which represents optimal shielding inside the launcher, demonstrates that the shielding upgrade also needs to include the launcher's environment.

Bastian Weinhorst; Arkady Serikov; Ulrich Fischer; Lei Lu; Peter Spaeh; Dirk Strauss

2014-01-01T23:59:59.000Z

378

High power millimeter wave experiment of ITER relevant electron cyclotron heating and current drive system  

SciTech Connect

High power, long pulse millimeter (mm) wave experiments of the RF test stand (RFTS) of Japan Atomic Energy Agency (JAEA) were performed. The system consists of a 1 MW/170 GHz gyrotron, a long and short distance transmission line (TL), and an equatorial launcher (EL) mock-up. The RFTS has an ITER-relevant configuration, i.e., consisted by a 1 MW-170 GHz gyrotron, a mm wave TL, and an EL mock-up. The TL is composed of a matching optics unit, evacuated circular corrugated waveguides, 6-miter bends, an in-line waveguide switch, and an isolation valve. The EL-mock-up is fabricated according to the current design of the ITER launcher. The Gaussian-like beam radiation with the steering capability of 20 deg. - 40 deg. from the EL mock-up was also successfully proved. The high power, long pulse power transmission test was conducted with the metallic load replaced by the EL mock-up, and the transmission of 1 MW/800 s and 0.5 MW/1000 s was successfully demonstrated with no arcing and no damages. The transmission efficiency of the TL was 96%. The results prove the feasibility of the ITER electron cyclotron heating and current drive system.

Takahashi, K.; Kajiwara, K.; Oda, Y.; Kasugai, A.; Kobayashi, N.; Sakamoto, K. [Japan Atomic Energy Agency, 801-1 Mukoyama, Naka, Ibaraki 311-0193 (Japan); Doane, J.; Olstad, R. [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States); Henderson, M. [ITER Organization, CS90 046, 13067 St. Paul lez Durance Cedex (France)

2011-06-15T23:59:59.000Z

379

Functionalized Polymers For Binding To Solutes In Aqueous Solutions  

NLE Websites -- All DOE Office Websites (Extended Search)

Functionalized Polymers For Binding To Solutes In Aqueous Solutions Functionalized Polymers For Binding To Solutes In Aqueous Solutions Functionalized Polymers For Binding To Solutes In Aqueous Solutions A functionalized polymer for binding a dissolved molecule in an aqueous solution is presented. Available for thumbnail of Feynman Center (505) 665-9090 Email Functionalized Polymers For Binding To Solutes In Aqueous Solutions A functionalized polymer for binding a dissolved molecule in an aqueous solution is presented. The polymer has a backbone polymer to which one or more functional groups are covalently linked. The backbone polymer can be such polymers as polyethylenimine, polyvinylamine, polyallylamine, and polypropylamine. These polymers are generally water-soluble, but can be insoluble when cross-linked. The functional group can be for example diol

380

Procurement Integrity Brochure What is Procurement Integrity...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

involved in agency procurements and contracts. This brochure is intended to act as a primer for all DOE employees on issues related to procurement integrity. As such, not all...

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Renewable Energy | Global and Regional Solutions  

NLE Websites -- All DOE Office Websites (Extended Search)

Renewable Energy Group Renewable Energy Group The Renewable Energy Group's missions is to support the Sustainable Energy Technologies Department by developing solutions to key issues facing the deployment, grid integration, and life-cycle assessment of renewable energy technologies in the United States. Group members perform research, systems-level modeling, engineering studies and field testing within several of the most promising renewable energy areas for the U.S., including solar photovoltaics, wind energy and biofuels. The research, modeling and studies address key issues related to energy transmission and integration of renewable energy systems into the current grid and future smart grids. They utilize broad collaborations across the Laboratory directorates and departments, including Basic Energy

382

Sandia National Laboratories: Grid Integration  

NLE Websites -- All DOE Office Websites (Extended Search)

Grid Integration Energy Supply Transformation Needed On February 20, 2013, in DETL, Distribution Grid Integration, Energy, Energy Assurance, Energy Surety, Grid Integration,...

383

Advanced Integrated Systems Technology Development  

E-Print Network (OSTI)

conditioning in buildings featuring integrated design withconditioning in buildings featuring integrated design withof a building with advanced integrated design involving one

2013-01-01T23:59:59.000Z

384

Integrable models and degenerate horizons in two-dimensional gravity  

Science Journals Connector (OSTI)

We analyze an integrable model of two-dimensional gravity which can be reduced to a pair of Liouville fields in the conformal gauge. Its general solution represents a pair of “mirror” black holes with the same temperature. The ground state is a degenerate constant dilaton configuration similar to the Nariai solution of the Schwarzschild–de Sitter case. The existence of ?=const solutions and their relation to the solution given by the 2D Birkhoff theorem is then investigated in a more general context. We also point out some interesting features of the semiclassical theory of our model and the similarity with the behavior of AdS2 black holes.

J. Cruz; A. Fabbri; D. J. Navarro; J. Navarro-Salas

1999-12-20T23:59:59.000Z

385

Integrable models and degenerate horizons in two-dimensional gravity  

E-Print Network (OSTI)

We analyse an integrable model of two-dimensional gravity which can be reduced to a pair of Liouville fields in conformal gauge. Its general solution represents a pair of ``mirror'' black holes with the same temperature. The ground state is a degenerate constant dilaton configuration similar to the Nariai solution of the Schwarzschild-de Sitter case. The existence of $\\phi=const.$ solutions and their relation with the solution given by the 2D Birkhoff's theorem is then investigated in a more general context. We also point out some interesting features of the semiclassical theory of our model and the similarity with the behaviour of AdS$_2$ black holes.

J. Cruz; A. Fabbri; D. J. Navarro; J. Navarro-Salas

1999-06-24T23:59:59.000Z

386

PETROLEUM ALLOCATION AT PETROBRAS: MATHEMATICAL MODEL AND A SOLUTION  

E-Print Network (OSTI)

PETROLEUM ALLOCATION AT PETROBRAS: MATHEMATICAL MODEL AND A SOLUTION ALGORITHM Roger Rocha1 Petroleum Allocation is an important link for the integration of Petroleum Supply Chain at PETROBRAS. In this work we describe how mathematical programming is being used to solve the Petroleum Allocation Problem

Grossmann, Ignacio E.

387

Electronic forms solutions To support your business objectives  

E-Print Network (OSTI)

Electronic forms solutions To support your business objectives Easily integrate your offline forms are using electronic forms instead of paper, so that their existing forms are always in stock, easy to locate and have a consistent look and feel. IBM® Lotus® Forms software provides an open electronic forms

388

Elasticity solutions for plane anisotropic functionally graded beams  

E-Print Network (OSTI)

Elasticity solutions for plane anisotropic functionally graded beams H.J. Ding a , D.J. Huang a This paper considers the plane stress problem of generally anisotropic beams with elastic compliance of anisotropic functionally graded plane beams, with the integral constants completely determined from boundary

Wang, Ji

389

Integrated Engineering Information Technology, FY93 accommplishments  

SciTech Connect

The Integrated Engineering Information Technology (IEIT) project is providing a comprehensive, easy-to-use computer network solution or communicating with coworkers both inside and outside Sandia National Laboratories. IEIT capabilities include computer networking, electronic mail, mechanical design, and data management. These network-based tools have one fundamental purpose: to help create a concurrent engineering environment that will enable Sandia organizations to excel in today`s increasingly competitive business environment.

Harris, R.N.; Miller, D.K.; Neugebauer, G.L.; Orona, J.R.; Partridge, R.A.; Herman, J.D.

1994-03-01T23:59:59.000Z

390

The numerical evaluation of many dimensional integrals  

E-Print Network (OSTI)

assistance, and to the members of my committee, Drs. H. A. Luther and R, R. Hocking. TABLE OF CONTENTS Chapter Page I. INTRODUCTION Il. EXISTING METHODS OF NUMERICAL INTEGRATION . 3 Classical Methods Mo nte Carlo Methods . III. AN ERROR ANALYSIS . 10... Derivation of a Criterion. Error Approximation Using the Classical Method . . Error Estimate Using the Crude Monte Carlo Method 10 12 16 IV, EXPERIMENTS WITH CRUDE MONTE CARLO AND THE CLASSICAL METHOD. 18 A Method for Finding Exact Solutions...

Rhodes, Duane Lewis

2012-06-07T23:59:59.000Z

391

Building America Technology Solutions for New and Existing Homes: Duct Sealing Using Injected Spray Sealant  

Energy.gov (U.S. Department of Energy (DOE))

In this project, the Raleigh Housing Authority worked with Building America team, the Advanced Residential Integrated Solutions Collaborative to determine the most cost-effective ways to reduce duct leakage in its low-rise housing units.

392

Metallocene/carbon hybrids prepared by a solution process for supercapacitor applications  

E-Print Network (OSTI)

Efficient and scalable solution-based processes are not generally available to integrate well-studied pseudocapacitive materials (i.e., metal oxides and conducting polymers) with other components such as porous carbon, ...

Mao, Xianwen

393

Sandia National Laboratories: Grid Integration  

NLE Websites -- All DOE Office Websites (Extended Search)

of renewable energy technology programs (Wind, Concentrating Solar Power, Geothermal, and Energy Systems Analysis). Transmission Grid Integration Distribution Grid Integration...

394

Integrated Safety Management (ISM)  

NLE Websites -- All DOE Office Websites (Extended Search)

Integrated Safety Management Integrated Safety Management Home ISM Policy ISM Champions ISM Workshops Resources Archives Contact Us Health and Safety HSS Logo Integrated Safety Management (ISM) ism logo Welcome to the Department of Energy's Office of Health, Safety and Security (HSS) Integrated Safety Management (ISM) Web Site. The Department and its contractors remain firmly committed to ISM as first defined in 1996. The objective of ISM is to perform work in a safe and environmentally sound manner. More specifically, as described in DOE P 450.4, Safety Management System Policy: "The Department and Contractors must systematically integrate safety into management and work practices at all levels so that missions are accomplished while protecting the public, the worker, and the environment. This is to be accomplished through effective integration of safety management into all facets of work planning and execution." "

395

Slowly rotating Kerr black hole as a solution of Einstein-Cartan gravity extended by a Chern-Simons term  

E-Print Network (OSTI)

We consider the nondynamical Chern-Simons (CS) modification to General Relativity (GR) in the framework of the Einstein-Cartan formulation, as providing a way to incorporate a slowly rotating Kerr black hole in the space of solutions. Our proposal lies on considering the CS term as a source of torsion and on an iterative procedure to look for vacuum solutions of the system, by expanding the tetrad, the connection and the embedding parameter, in powers of a dimensionless small parameter $\\beta$ which codifies the CS coupling. Starting from a torsionless zeroth-order vacuum solution we derive the second-order differential equation for the $\\mathcal{O}(\\beta)$ corrections to the metric, for an arbitrary embedding parameter. Furthermore we can show that the slowly rotating Kerr metric is an $\\mathcal{O}(\\beta)$ solution of the system either in the canonical or the axial embeddings.

Mauro Cambiaso; Luis F. Urrutia

2010-08-03T23:59:59.000Z

396

Integrated Energy Efficiency  

E-Print Network (OSTI)

10 Off The Grid Sensor Integration Natural Daylight Base and Peak Energy Reduction 11 Lowest Cost Renewable Solar Integrated Lighting $1.0 million/MW $6 – 9 million/MW Wind $1.3 - 1.9 million/MW Biomass $1.5 – 2.5 million/MW Geothermal $1.6 million... 10 Off The Grid Sensor Integration Natural Daylight Base and Peak Energy Reduction 11 Lowest Cost Renewable Solar Integrated Lighting $1.0 million/MW $6 – 9 million/MW Wind $1.3 - 1.9 million/MW Biomass $1.5 – 2.5 million/MW Geothermal $1.6 million...

Heins, S.

397

Graphene Integrated Microwave Photonics  

Science Journals Connector (OSTI)

This paper proposes and analyzes the incorporation of graphene to integrated waveguides and circuits for application to the field of microwave photonics (MWP). We discuss the main...

Capmany, José; Doménech, David; Muńoz, Pascual

2014-01-01T23:59:59.000Z

398

Integrated LED Headlamp Module  

Science Journals Connector (OSTI)

LED headlamp module integrates all necessary optics, electronics, and heat management into one compact unit that fits into standard mechanical headlamp frame. It provides high beam,...

Popelek, Jan

399

Technology Integration Overview  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Technology Integration Overview Dennis A. Smith - Clean Cities Deployment Connie Bezanson - Vehicle Education June 17, 2014 VEHICLE TECHNOLOGIES OFFICE This presentation does not...

400

Technology Integration Overview  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

-Technology Integration Overview - Dennis A. Smith Connie Bezanson U. S. Department of Energy Headquarters Office - Washington, D.C. May 2013 Project ID: TI000 2013 Department of...

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

NREL: Wind Research - Grid Integration of Offshore Wind  

NLE Websites -- All DOE Office Websites (Extended Search)

Grid Integration of Offshore Wind Grid Integration of Offshore Wind Photograph of a wind turbine in the ocean. Located about 10 kilometers off the coast of Arklow, Ireland, the Arklow Bank offshore wind park consists of seven GE Wind 3.6-MW wind turbines. Much can be learned from the existing land-based integration research for handling the variability and uncertainty of the wind resource. Integration and Transmission One comprehensive grid integration study is the Eastern Wind Integration and Transmission Study (EWITS), in which offshore wind scenarios were analyzed. Nearly 80 GW of offshore wind was studied in the highest penetration scenario. Specific offshore grid distribution and transmission solutions were identified, including cost estimates. With the Atlantic coast likely to lead the way in offshore wind power deployment, EWITS is a benchmark for

402

Development of ITER 15 MA ELMy H-mode Inductive Scenario  

SciTech Connect

The poloidal field (PF) coil system on ITER, which provides both feedforward and feedback control of plasma position, shape, and current, is a critical element for achieving mission performance. Analysis of PF capabilities has focused on the 15 MA Q = 10 scenario with a 300-500 s flattop burn phase. The operating space available for the 15 MA ELMy H-mode plasma discharges in ITER and upgrades to the PF coils or associated systems to establish confidence that ITER mission objectives can be reached have been identified. Time dependent self-consistent free-boundary calculations were performed to examine the impact of plasma variability, discharge programming, and plasma disturbances. Based on these calculations a new reference scenario was developed based upon a large bore initial plasma, early divertor transition, low level heating in L-mode, and a late H-mode onset. Equilibrium analyses for this scenario indicate that the original PF coil limitations do not allow low li (<0.8) operation or lower flux states, and the flattop burn durations were predicted to be less than the desired 400 s. This finding motivates the expansion of the operating space, considering several upgrade options to the PF coils. Analysis was also carried out to examine the feedback current reserve required in the CS and PF coils during a series of disturbances and a feasibility assessment of the 17 MA scenario was undertaken. Results of the studies show that the new scenario and modified PF system will allow a wide range of 15 MA 300-500 s operation and more limited but finite 17 MA operation.

Kessel, C. E.; Campbell, D.; Gribov, Y.; Saibene, G.; Ambrosino, G.; Casper, T.; Cavinato, M.; Fujieda, H.; Hawryluk, R.; Horton, L. D.; Kavin, A.; Kharyrutdinov, R.; Koechl, F.; Leuer, J.; Loarte, A.; Lomas, P. J.; Luce, T.; Lukash, V.; Mattei, M.; Nunes, I.; Parail, V.; Polevoi, A.; Portone, A.; Sartori, R.; Sips, A. C.C.; Thomas, P. R.; Welander, A.; Wesley, J.

2008-10-16T23:59:59.000Z

403

Second performance assessment iteration of the Greater Confinement Disposal facility at the Nevada Test Site  

SciTech Connect

The Greater Confinement Disposal (GCD) facility was established in Area 5 at the Nevada Test Site for containment of waste inappropriate for shallow land burial. Some transuranic (TRU) waste has been disposed of at the GCD facility, and compliance of this disposal system with EPA regulation 40 CFR 191 must be evaluated. We have adopted an iterative approach in which performance assessment results guide site data collection, which in turn influences the parameters and models used in performance assessment. The first iteration was based upon readily available data, and indicated that the GCD facility would likely comply with 40 CFR 191 and that the downward flux of water through the vadose zone (recharge) had a major influence on the results. Very large recharge rates, such as might occur under a cooler, wetter climate, could result in noncompliance. A project was initiated to study recharge in Area 5 by use of three environmental tracers. The recharge rate is so small that the nearest groundwater aquifer will not be contaminated in less than 10,000 years. Thus upward liquid diffusion of radionuclides remained as the sole release pathway. This second assessment iteration refined the upward pathway models and updated the parameter distributions based upon new site information. A new plant uptake model was introduced to the upward diffusion pathway; adsorption and erosion were also incorporated into the model. Several modifications were also made to the gas phase radon transport model. Plutonium solubility and sorption coefficient distributions were changed based upon new information, and on-site measurements were used to update the moisture content distributions. The results of the assessment using these models indicate that the GCD facility is likely to comply with all sections of 40 CFR 191 under undisturbed conditions.

Baer, T.A.; Emery, J.N. [GRAM, Inc., Albuquerque, NM (United States); Price, L.L. [Science Applications International Corp., Albuquerque, NM (United States); Olague, N.E. [Sandia National Labs., Albuquerque, NM (United States)

1994-04-01T23:59:59.000Z

404

Large-order shifted 1/N expansions through the asymptotic iteration method  

E-Print Network (OSTI)

The perturbation technique within the framework of the asymptotic iteration method is used to obtain large-order shifted 1/N expansions, where N is the number of spatial dimensions. This method is contrary to the usual Rayleigh-Schr\\"{o}dinger perturbation theory, no matrix elements need to be calculated. The method is applied to the Schr\\"{o}dinger equation and the non-polynomial potential $V(r)=r^2+\\frac{b r^2}{(1+cr^2)}$ in three dimensions is discussed as an illustrative example.

T. Barakat

2007-08-16T23:59:59.000Z

405

Cryogenic Properties of Inorganic Insulation Materials for ITER Magnets: A Review  

SciTech Connect

Results of a literature search on the cryogenic properties of candidate inorganic insulators for the ITER TF magnets are reported. The materials investigated include: Al{sub 2}O{sub 3}, AlN, MgO, porcelain, SiO{sub 2}, MgAl{sub 2}O{sub 4}, ZrO{sub 2}, and mica. A graphical presentation is given of mechanical, elastic, electrical, and thermal properties between 4 and 300 K. A companion report reviews the low temperature irradiation resistance of these materials.

Simon, N.J.

1994-12-01T23:59:59.000Z

406

EMSL Integration 2012 | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

of Carbon Detected NMR Methods to Biomolecules in Solution: The Case of the Intrinsically Disordered Proteins, EMSL Auditorium Scott Showalter Pennsylvania State University 4 p.m....

407

Bearwall Energy Efficient Solutions  

E-Print Network (OSTI)

CATEE Conference November 20, 2014 ENERGY EFFICIENT SOLUTIONS ESL-KT-14-11-06 CATEE 2014: Clean Air Through Efficiency Conference, Dallas, Texas Nov. 18-20 Brief History of Bearwall… Who We Are: ? Manuel Sovero ? Luis Osorio Energy Conservation... Experience: ESL-KT-14-11-06 CATEE 2014: Clean Air Through Efficiency Conference, Dallas, Texas Nov. 18-20 Energy Programs… ESL-KT-14-11-06 CATEE 2014: Clean Air Through Efficiency Conference, Dallas, Texas Nov. 18-20 Bearwall Methodology… Introduction...

Sovero,M.

2014-01-01T23:59:59.000Z

408

Implementation of a cell-wise Block-Gauss-Seidel iterative method for SN transport on a hybrid parallel computer architecture  

SciTech Connect

We have implemented a cell-wise, block-Gauss-Seidel (bGS) iterative algorithm, for the solution of the S{sub n} transport equations on the Roadrunner hybrid, parallel computer architecture. A compute node of this massively parallel machine comprises AMD Opteron cores that are linked to a Cell Broadband Engine{trademark} (Cell/B.E.). LAPACK routines have been ported to the Cell/B.E. in order to make use of its parallel Synergistic Processing Elements (SPEs). The bGS algorithm is based on the LU factorization and solution of a linear system that couples the fluxes for all S{sub n} angles and energy groups on a mesh cell. For every cell of a mesh that has been parallel decomposed on the higher-level Opteron processors, a linear system is transferred to the Cell/B.E. and the parallel LAPACK routines are used to compute a solution, which is then transferred back to the Opteron, where the rest of the computations for the S{sub n} transport problem take place. Compared to standard parallel machines, a hundred-fold speedup of the bGS was observed on the hybrid Roadrunner architecture. Numerical experiments with strong and weak parallel scaling demonstrate the bGS method is viable and compares favorably to full parallel sweeps (FPS) on two-dimensional, unstructured meshes when it is applied to optically thick, multi-material problems. As expected, however, it is not as efficient as FPS in optically thin problems.

Rosa, Massimiliano [Los Alamos National Laboratory; Warsa, James S [Los Alamos National Laboratory; Perks, Michael [Los Alamos National Laboratory

2010-12-14T23:59:59.000Z

409

FCT Technology Validation: Integrated Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

Integrated Projects to Integrated Projects to someone by E-mail Share FCT Technology Validation: Integrated Projects on Facebook Tweet about FCT Technology Validation: Integrated Projects on Twitter Bookmark FCT Technology Validation: Integrated Projects on Google Bookmark FCT Technology Validation: Integrated Projects on Delicious Rank FCT Technology Validation: Integrated Projects on Digg Find More places to share FCT Technology Validation: Integrated Projects on AddThis.com... Home Transportation Projects Stationary/Distributed Generation Projects Integrated Projects DOE Projects Non-DOE Projects Quick Links Hydrogen Production Hydrogen Delivery Hydrogen Storage Fuel Cells Manufacturing Codes & Standards Education Systems Analysis Contacts Integrated Projects To maximize overall system efficiencies, reduce costs, and optimize

410

Soy Solutions | Open Energy Information  

Open Energy Info (EERE)

Soy Solutions Place: Milford, Iowa Zip: 51351 Product: Manufacturer and distributor of 100 percent Soy-Based Biodiesel References: Soy Solutions1 This article is a stub. You can...

411

DEVELOPMENT Solutions | Open Energy Information  

Open Energy Info (EERE)

DEVELOPMENT Solutions DEVELOPMENT Solutions Jump to: navigation, search Name DEVELOPMENT Solutions Place Reading, England, United Kingdom Zip RG4 8UJ Sector Efficiency Product DEVELOPMENT Solutions (DS) supports investors to realise projects with sustainable applications, including in the areas of environment, energy efficiency, water resource management and other applications for sustainable development. References DEVELOPMENT Solutions[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. DEVELOPMENT Solutions is a company located in Reading, England, United Kingdom . References ↑ "DEVELOPMENT Solutions" Retrieved from "http://en.openei.org/w/index.php?title=DEVELOPMENT_Solutions&oldid=344207

412

New Solutions for Substation Sensing, Signal Processing and Decision Making M. Kezunovic, Fellow IEEE  

E-Print Network (OSTI)

New Solutions for Substation Sensing, Signal Processing and Decision Making M. Kezunovic, Fellow describes a new solution for integrating substation sensing, signal processing and decision making for more. Introduction The existing substation designs for sensing, signal processing and decision-making have been

413

Modular Integrated Energy Systems  

E-Print Network (OSTI)

Honeywell #12;Modular Integrated Energy Systems Task 5 Prototype Development Reference Design DocumentationModular Integrated Energy Systems Prepared for: Oak Ridge National Laboratory P.O. Box 2008 Building 3147 Oak Ridge, TN 37831 April 27, 2006 Prepared by: Honeywell Laboratories 3660 Technology Drive

Oak Ridge National Laboratory

414

Systems Integration (Fact Sheet)  

SciTech Connect

The Systems Integration (SI) subprogram works closely with industry, universities, and the national laboratories to overcome technical barriers to the large-scale deployment of solar technologies. To support these goals, the subprogram invests primarily in four areas: grid integration, technology validation, solar resource assessment, and balance of system development.

Not Available

2011-10-01T23:59:59.000Z

415

State-of-the-art Building Integrated Photovoltaics  

Science Journals Connector (OSTI)

Building integrated photovoltaic (BIPV) systems may represent a powerful and versatile tool for achieving the ever increasing demand for zero energy and zero emission buildings of the near future. In this respect \\{BIPVs\\} offer an aesthetical, economical and technical solution to integrate solar cells harvesting solar radiation to produce electricity within the climate envelopes of buildings. This work summarizes the current state-of-the-art of BIPVs, including both BIPV foil, tile, module and solar cell glazing products.

Bjřrn Petter Jelle; Christer Breivik

2012-01-01T23:59:59.000Z

416

A White Noise Approach to Phase Space Feynman Path Integrals  

E-Print Network (OSTI)

The concepts of phase space Feynman integrals in White Noise Analysis are established. As an example the harmonic oscillator is treated. The approach perfectly reproduces the right physics. I.e., solutions to the Schr\\"odinger equation are obtained and the canonical commutation relations are satisfied. The later can be shown, since we not only construct the integral but rather the Feynman integrand and the corresponding generating functional.

Wolfgang Bock; Martin Grothaus

2010-12-06T23:59:59.000Z

417

Alcator C-Mod Experiments in Support of the ITER Baseline 15 MA Scenario  

SciTech Connect

Experiments on Alcator C-Mod have addressed several issues for the ITER 15 MA baseline scenario from 2009-2012. Rampup studies show ICRF can save significant V-s, and that an H-mode in the ramp can be utilized to save 50% more. ICRF modifications to li(1) are minimal, although the Te profile is peaked relative to ohmic in the plasma center, and alter sawtooth onset times. Rampdown studies show H-modes can be routinely sustained, avoiding an OH coil over-current associated with the H-L transition, that fast rampdowns are preferred, the density drops with Ip, and that the H-L transition occurs at Ploss/Pthr,LH ~ 1.0-1.3 at n/nGr ~ 0.85. Flattop plasmas targeting ITER baseline parameters have been sustained for 20 ?E or 8-13 ?CR, but only reach H98 ~ 0.6 at n/nGr = 0.85, rising to 0.9 at n/nGr = 0.65.

C Kessel, et al

2013-05-07T23:59:59.000Z

418

Investigation and analysis on ITER in-vessel coils’ raw-materials  

Science Journals Connector (OSTI)

Abstract The ITER in-vessel coils (IVCs) consist of 27 coils edge localized modes (ELM) and 2 coils vertical stabilization (VS) which are all mounted on the vacuum vessel wall behind the shield modules. The \\{IVCs\\} design and manufacturing work is being conducted in between Institute of Plasma Physics Chinese Academy of Sciences (ASIPP) and Princeton Plasma Physics Laboratory (PPPL). Because the position of ELM and VS coils is close and face to the plasma, the \\{IVCs\\} must undergo a severe environment, such as the high dose of radiation and high operation temperature, thus the conventional electrical insulation materials cannot be used. And the technology of “Stainless Steel Jacketed Mineral Insulated Conductor” (SSMIC) is deemed as the best choice to provide the necessary radiation resistance and compatibility strength in ITER's vacuum vessel. While mineral insulated conductor technology is not new, and is similar to the mineral insulated cable used in industrial. Some difficulties still need to be solved, such as searching for the proper raw-materials to make sure that the conductor have the properties of high current carrying capability, the necessary radiation resistance, the proper strength, at the same time, it must be come true in manufacture technology. This paper described the analysis of the materials for VS and ELM coil conductor.

Huan Jin; Yu Wu; Feng Long; Min Yu; Qiyang Han; Huajun Liu

2013-01-01T23:59:59.000Z

419

Beryllium fabrication/cost assessment for ITER (International Thermonuclear Experimental Reactor)  

SciTech Connect

A fabrication and cost estimate of three possible beryllium shapes for the International Thermonuclear Experimental Reactor (ITER) blanket is presented. The fabrication method by hot pressing (HP), cold isostatic pressing plus sintering (CIP+S), cold isostatic pressing plus sintering plus hot isostatic pressing (CIP+S+HIP), and sphere production by atomization or rotary electrode will be discussed. Conventional hot pressing blocks of beryllium with subsequent machining to finished shapes can be more expensive than production of a net shape by cold isostatic pressing and sintering. The three beryllium shapes to be considered here and proposed for ITER are: (1) cubic blocks (3 to 17 cm on an edge), (2) tubular cylinders (33 to 50 mm i.d. by 62 mm o.d. by 8 m long), and (3) spheres (1--5 mm dia.). A rough cost estimate of the basic shape is presented which would need to be refined if the surface finish and tolerances required are better than the sintering process produces. The final cost of the beryllium in the blanket will depend largely on the machining and recycling of beryllium required to produce the finished product. The powder preparation will be discussed before shape fabrication. 10 refs., 6 figs.

Beeston, J.M. (Beeston (J.M.), Garrison, UT (USA)); Longhurst, G.R. (EG and G Idaho, Inc., Idaho Falls, ID (USA)); Parsonage, T. (Brush Wellman, Inc., Elmore, OH (USA))

1990-06-01T23:59:59.000Z

420

Analytical solutions to estimate the floating free product thickness and efficiency of recovery operations  

E-Print Network (OSTI)

solutions to estimate the recovery of oil from an established oil lens by a two pump recovery system. The solutions will be obtained by applying the Laplace and Double integral transformations to averaged linear partial differential equations governing... MODEL DEVELOPMENT 2. 1 Physical Problem 2. 2 Assumptions 2. 3 Mathematical Formulations 2. 4 Derivation of Oil Phase Equation 2. 5 Derivation of Water Phase Equation 7 8 12 13 24 III UNCOUPLED SOLUTIONS 30 3. 1 Introduction 3. 2 Case 1...

Lingam, Rajasekhar

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Comparison and Analysis of Twist Pitch Length Test Methods for ITER Nb3Sn and NbTi Strands  

E-Print Network (OSTI)

A twisted multifilamentary structure is needed for Nb3Sn and NbTi strands to be used in the International Thermonuclear Experimental Reactor (ITER) magnets. As important parameters for the superconducting strands design and production, the twist pitch length and direction of strands must meet the requirements according to ITER Procurement Arrangement (PA) and this must be verified. The technical requirements are 15mm+/-2mm for twist pitch length and right hand twist for direction. The strand twist pitch and the twist direction can be measured on straight sections of strand, which is recognized by the repetition of filament bundles or by the angle of the filaments. Several test methods and results are described and compared in this paper. The accuracy, uncertainty and feasibility of different methods are analyzed and recommended measurement methods are proposed for ITER strands verification.

Fang Liu; Feng Long; Chao Chen; Bo Liu; Yu Wu; Huajun Liu

2013-05-08T23:59:59.000Z

422

Fundamental solution method for reconstructing past climate change from borehole temperature gradients  

Science Journals Connector (OSTI)

Abstract Deep borehole temperature profiles have successfully been used to reconstruct past ground surface temperature history and the results are dependent on the inversion methods. These methods are tedious and sometimes unstable in iterative computation. In this paper, we propose a new fundamental solution method to reconstruct the past ground surface temperature variation, which depends on the assumption that ground temperature field in a homogeneous region is governed by a one-dimensional heat conductive equation. To regularize the resultant ill-conditioned linear system of equations, we apply successfully both the Tikhonov regularization technique and the generalized cross validation parameter choice rule to obtain a stable approximation solution of the ill-posed inverse problem. Our new method is stable and meshless, and it does not require iteration. We conducted idealized simulations with good results. We also used in-situ borehole data of RU-Yakutia329 from Yakutia, Siberia and CN-XZ-naqu903 from Naqu, Qinghai–Xizang (Tibetan) Plateau to validate our new approach. Results from these borehole studies show a warming of 0.1 and 2.3 °C, respectively, in the past 450 years. When comparing to the results from previous studies, the RU-Yakutia329 study has the same magnitude of warming, while the magnitude of warming at Naqu is slightly smaller.

Jia Liu; Tingjun Zhang

2014-01-01T23:59:59.000Z

423

Looking for Energy Solutions  

NLE Websites -- All DOE Office Websites (Extended Search)

Governments and Schools: Governments and Schools: Looking for Energy Solutions Turn to an ENERGY STAR ® Service and Product Provider Partner ENERGY STAR Service and Product Providers (SPPs) have the experience and access to the tools needed to implement energy- efficient strategies that are right for you. Following the U.S. Environmental Protection Agency's (EPA) Guidelines for Energy Management, a proven strategy developed from ENERGY STAR partner successes, your organization can gain control of energy expenses and demonstrate environmental leadership. SPPs can help you assess your energy performance and recommend low-cost upgrades, cost-effective investments, and longer-term strategies that make the most sense for you. ENERGY STAR SPPs make it easy for you to care for your constituents, your facilities, and your finances.

424

2010 Water & Aqueous Solutions  

SciTech Connect

Water covers more than two thirds of the surface of the Earth and about the same fraction of water forms the total mass of a human body. Since the early days of our civilization water has also been in the focus of technological developments, starting from converting it to wine to more modern achievements. The meeting will focus on recent advances in experimental, theoretical, and computational understanding of the behavior of the most important and fascinating liquid in a variety of situations and applications. The emphasis will be less on water properties per se than on water as a medium in which fundamental dynamic and reactive processes take place. In the following sessions, speakers will discuss the latest breakthroughs in unraveling these processes at the molecular level: Water in Solutions; Water in Motion I and II; Water in Biology I and II; Water in the Environment I and II; Water in Confined Geometries and Water in Discussion (keynote lecture and poster winners presentations).

Dor Ben-Amotz

2010-08-13T23:59:59.000Z

425

PEV Integration with Renewables (Presentation)  

SciTech Connect

This presentation discusses current research at NREL on integrating plug-in electric vehicles with the grid and using renewable energy to charge the grid. The Electric Vehicle Grid Integration (EVGI) and Integrated Network Testbed for Energy Grid Research and Technology Experimentation (INTEGRATE) are addressing the opportunities and technical requirements for vehicle grid integration that will increase marketability and lead to greater petroleum reduction.

Markel, T.

2014-06-18T23:59:59.000Z

426

Practical application of optimization techniques to the design of integrated circuit building blocks  

E-Print Network (OSTI)

. Statistical Model for Analog Circuit Simulation PROBLEM FORMULATION A. Introduction . B. Yield Maximization . C. Taguchi "On-target" Design D. Variability Minimization 2 2 3 4 6 7 9 10 12 15 16 17 19 20 21 25 25 26 28 29 31 31 31.... The Acceptability Region itlinimization is represented by: F: R" R' min F(x) xcR" (2. 11) (9 19) B. Optimization Algorithms Iterative algorithms are used to determine solutions of objective functions, F(x) of optimization problems. The computer is usecl...

Liu, Chong Hsu

2012-06-07T23:59:59.000Z

427

The Advanced Microgrid: Integration and Integration and Interoperabili...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Advanced Microgrid: Integration and Integration and Interoperability (March 2014) This white paper provides a synopsis of many elements of microgrid component technologies and...

428

A general boundary integral approach to elliptical boundary value problems  

Science Journals Connector (OSTI)

Based upon basic principles of continuum theory a unified direct boundary integral representation of three-dimensional elliptical boundary value problems is presented. Within this framework many interesting engineering problems, e.g. elastostatics, manetostatic and heat conduction may be considered. The special analysis of the problem under consideration appears in the fundamental solutions. A general procedure for derivation of fundamental solutions with regard to an effecient numerical realisation of the boundary element method is discussed. In the appendix a FORTRAN IV code concerning the calculation of fundamental solutions in anisotropic elastostatics is presented.

H. Gründemann

1987-01-01T23:59:59.000Z

429

Wellbore Integrity Network  

SciTech Connect

In this presentation, we review the current state of knowledge on wellbore integrity as developed in the IEA Greenhouse Gas Programme's Wellbore Integrity Network. Wells are one of the primary risks to the successful implementation of CO{sub 2} storage programs. Experimental studies show that wellbore materials react with CO{sub 2} (carbonation of cement and corrosion of steel) but the impact on zonal isolation is unclear. Field studies of wells in CO{sub 2}-bearing fields show that CO{sub 2} does migrate external to casing. However, rates and amounts of CO{sub 2} have not been quantified. At the decade time scale, wellbore integrity is driven by construction quality and geomechanical processes. Over longer time-scales (> 100 years), chemical processes (cement degradation and corrosion) become more important, but competing geomechanical processes may preserve wellbore integrity.

Carey, James W. [Los Alamos National Laboratory; Bachu, Stefan [Alberta Innovates

2012-06-21T23:59:59.000Z

430

Energy Systems Integration  

Energy.gov (U.S. Department of Energy (DOE))

Presentation—given at at the Fall 2012 Federal Utility Partnership Working Group (FUPWG) meeting—covers the National Renewable Energy Laboratory's Energy Systems Integration Facility (ESIF) and its capabilities.

431

Discrete Hamiltonian variational integrators  

Science Journals Connector (OSTI)

......Journal of Numerical Analysis (2011) 31, 1497-1532 doi:10.1093/imanum/drq027 Advance Access publication on March 17, 2011 Discrete Hamiltonian variational integrators MELVIN LEOK Department of Mathematics, University of California, San......

Melvin Leok; Jingjing Zhang

2011-10-01T23:59:59.000Z

432

Enabling Processes and Integration  

Science Journals Connector (OSTI)

Integrating a process on a chip requires a thorough and, throughout the development cycle, continuous understanding of how it will be applied. This includes the definition of a set of required components, comp...

2009-01-01T23:59:59.000Z

433

Integrable quantum mappings  

Science Journals Connector (OSTI)

A quantum R-matrix structure is presented for a family of exactly integrable multidimensional rational mappings related to lattice versions of the Korteweg–de Vries equation. It is shown that these mappings possess a commuting family of invariants.

F. W. Nijhoff; H. W. Capel; V. G. Papageorgiou

1992-08-15T23:59:59.000Z

434

Microsoft Word - Advanced Solution Verification of CFD Solutions...  

NLE Websites -- All DOE Office Websites (Extended Search)

of a software implementation of a numerical algorithm is evaluated, typically by comparison against an exact solution. For t he p urpose o f comparison, the new verification...

435

Integrated Safety Management Policy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

INTEGRATED SAFETY INTEGRATED SAFETY MANAGEMENT SYSTEM DESCRIPTION U.S. DEPARTMENT OF ENERGY Office of Environmental Management Headquarters May 2008 Preparation: Braj K. sin& Occupational Safety and Health Manager Office of Safety Management Concurrence: Chuan-Fu wu Director, Offlce of Safety Management Deputy Assistant Secretary for safe& Management andoperations Operations Officer for 1 Environmental Management Approval: Date p/-g Date Environmental Management TABLE OF CONTENTS ACRONYMS................................................................................................................................................................v EXECUTIVE SUMMARY .........................................................................................................................................1

436

IDC Integrated Master Plan.  

SciTech Connect

This is the IDC Re-Engineering Phase 2 project Integrated Master Plan (IMP). The IMP presents the major accomplishments planned over time to re-engineer the IDC system. The IMP and the associate Integrated Master Schedule (IMS) are used for planning, scheduling, executing, and tracking the project technical work efforts. REVISIONS Version Date Author/Team Revision Description Authorized by V1.0 12/2014 IDC Re- engineering Project Team Initial delivery M. Harris

Clifford, David J.; Harris, James M.

2014-12-01T23:59:59.000Z

437

ITER: Japanese and Europeans still at a Dead End 23/03 13:14 Japan and the European Commission completed Tuesday in Tokyo of the bilateral  

E-Print Network (OSTI)

Mitsos. The European delegation had talks on Friday with Japanese specialists in nuclear power and energyITER: Japanese and Europeans still at a Dead End 23/03 13:14 Japan and the European Commission of nuclear fusion ITER without managing to leave the dead end, but making the report of a necessary

438

Integrating hospital information systems: a bottom-up approach  

Science Journals Connector (OSTI)

The growing complexity of hospital information systems has prompted information systems managers to seek applicable solutions for integrating their systems. While many successful applications of information systems have been introduced and implemented in the hospital environment, the integration of heterogeneous applications in existing, multi-vendor, computing environments into a cohesive hospital-wide information system has proved to be complicated and difficult to accomplish. This paper discusses systems integration in hospitals and presents a conceptual framework for bottom-up integration of hospital information systems. The scope of the proposed framework is the integration of stand-alone clinical, administrative and financial information elements of a hospital into a unified system environment with a central medical data warehouse.

Moshe Zviran; Aviad Armoni

1999-01-01T23:59:59.000Z

439

THE NUMERICAL APPROXIMATION FOR THE INTEGRABILITY PROBLEM AND THE MEASURE OF WELFARE CHANGES, AND ITS APPLICATIONS  

E-Print Network (OSTI)

This dissertation mainly studied on numerical approximation methods as a solution of the integrability problem and the measure of welfare changes, and demonstrated how numerical algorithms can be applied in empirical studies ...

Lim, Sung Jin

2012-01-01T23:59:59.000Z

440

Solar Choice Solutions Inc | Open Energy Information  

Open Energy Info (EERE)

Solutions Inc Jump to: navigation, search Name: Solar Choice Solutions Inc. Place: Calabasas, California Zip: 91302 Sector: Solar Product: Solar Choice Solutions Inc. is an...

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

2006 Annual Report: Discovering Solutions  

SciTech Connect

This annual report includes: a brief overview of Western; FY 2006 highlights; FY 2006 Integrated Resource Planning, or IRP, summary; and financial data.

none,

2006-01-01T23:59:59.000Z

442

NREL: Transmission Grid Integration - Publications  

NLE Websites -- All DOE Office Websites (Extended Search)

Publications Publications Want updates about future transmission grid integration webinars and publications? Join our mailing list. NREL has an extensive collection of publications related to transmission integration research. Explore the resources below to learn more. Selected Project Publications Read selected publications related to these transmission integration projects: Western Wind and Solar Integration Study Eastern Renewable Generation Integration Study Oahu Wind Integration and Transmission Study Flexible Energy Scheduling Tool for Integration of Variable generation (FESTIV) Active power controls Forecasting Grid Simulation. NREL Publications Database NREL's publications database offers a variety of documents related to transmission integration that were written by NREL staff and

443

NREL: Energy Systems Integration - Events  

NLE Websites -- All DOE Office Websites (Extended Search)

and future challenges. Photo of the courtyard and two surrounding building wings of the Energy Systems Integration Facility. NREL's Energy Systems Integration Seminar Series...

444

NREL: Transmission Grid Integration - Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

Projects NREL's transmission integration projects provide data and models that help utilities and policymakers make informed decisions about the integration of variable generation,...

445

Integrating farming and wastewater management.  

E-Print Network (OSTI)

??Source separating wastewater systems are often motivated by their integration with farming. It is thus important to scrutinise the critical factors associated with such integration.… (more)

Tidĺker, Pernilla

2007-01-01T23:59:59.000Z

446

Sandia National Laboratories: Grid Integration  

NLE Websites -- All DOE Office Websites (Extended Search)

Specialists Conference On July 31, 2014, in DETL, Distribution Grid Integration, Energy, Energy Surety, Facilities, Grid Integration, Infrastructure Security, News, News &...

447

Is Nuclear Energy the Solution?  

E-Print Network (OSTI)

009-0270-y Is Nuclear Energy the Solution? Milton H. Saier &in the last 50 years, nuclear energy subsidies have totaledadministration, the Global Nuclear Energy Partnership (GNEP)

Saier, Milton H.; Trevors, Jack T.

2010-01-01T23:59:59.000Z

448

SBY Solutions | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Name: SBY Solutions Place: Israel Zip: 42836 Sector: Solar Product: Solar panel installer, mainly focusing on rooftops. References: SBY...

449

Upgrade of the infrared camera diagnostics for the JET ITER-like wall divertor  

SciTech Connect

For the new ITER-like wall at JET, two new infrared diagnostics (KL9B, KL3B) have been installed. These diagnostics can operate between 3.5 and 5 {mu}m and up to sampling frequencies of {approx}20 kHz. KL9B and KL3B image the horizontal and vertical tiles of the divertor. The divertor tiles are tungsten coated carbon fiber composite except the central tile which is bulk tungsten and consists of lamella segments. The thermal emission between lamellae affects the surface temperature measurement and therefore KL9A has been upgraded to achieve a higher spatial resolution (by a factor of 2). A technical description of KL9A, KL9B, and KL3B and cross correlation with a near infrared camera and a two-color pyrometer is presented.

Balboa, I.; Arnoux, G.; Kinna, D.; Thomas, P. D. [EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon, OX14 3DB (United Kingdom); Eich, T.; Sieglin, B.; Devaux, S.; Zeidner, W. [Max-Planck-IPP, EURATOM Association, D-85748 Garching (Germany); Morlock, C.; Kruezi, U.; Sergienko, G.; Rack, M. [Institut fuer Energie und Klimaforschung Plasmaphysik, Forschungszentrum Juelich GmbH, EURATOM Association FZJ, D-52425 Juelich (Germany); Collaboration: JET EFDA Contributors

2012-10-15T23:59:59.000Z

450

Iterative methods for solving space-time one dimensional multigroup diffusion equations  

Science Journals Connector (OSTI)

The numerical methods of Successive Overrelaxation (SOR), Successive-Line Overrelaxation (SLOR) and Alternating Direction Implicit (ADI) are used in this research to solve space-time one-dimensional diffusion equations. The results of this research have been compared with the ANL-Benchmark Problem BSS-6-A2. In general, the results are in agreement with the Argonne National Laboratory Benchmark Source Situation (BSS-6-A2). However, there is very little difference between SOR and ANL-BSS-6-A2 because of inner iterations in the SOR method. This research shows that the SLOR and ADI methods are more accurate and more efficient than the SOR method in solving space-time diffusion equations. SLOR is the most efficient in the case of a big number of mesh elements; however, the ADI method is the most efficient in the case of a small number of mesh elements.

Y. Yulianti; Z. Su'ud; A. Waris; S.N. Khotimah

2010-01-01T23:59:59.000Z

451

Nuclear analysis and shielding optimisation in support of the ITER In-Vessel Viewing System design  

E-Print Network (OSTI)

The In-Vessel Viewing System (IVVS) units proposed for ITER are deployed to perform in-vessel examination. During plasma operations, the IVVS is located beyond the vacuum vessel, with shielding blocks envisaged to protect components from neutron damage and reduce shutdown dose rate (SDR) levels. Analyses were conducted to determine the effectiveness of several shielding configurations. The neutron response of the system was assessed using global variance reduction techniques and a surface source, and shutdown dose rate calculations were undertaken using MCR2S. Unshielded, the absorbed dose to piezoelectric motors (PZT) was found to be below stable limits, however activation of the primary closure plate (PCP) was prohibitively high. A scenario with shielding blocks at probe level showed significantly reduced PCP contact dose rate, however still marginally exceeded port cell requirements. The addition of shielding blocks at the bioshield plug demonstrated PCP contact dose rates below project requirements. SDR l...

Turner, A; Loughlin, M J; Ghani, Z; Hurst, G; Bue, A Lo; Mangham, S; Puiu, A; Zheng, S

2014-01-01T23:59:59.000Z

452

Progress toward a microsecond duration, repetitive, intense-ion beam for active spectroscopic measurements on ITER  

SciTech Connect

The authors describe the design of an intense, pulsed, repetitive, neutral beam based on magnetically insulated diode technology for injection into ITER for spectroscopic measurements of thermalizing alpha particle and thermal helium density profiles, ion temperature, plasma rotation, and low Z impurity concentrations in the confinement region. The beam is being developed to enhance low signal-to-noise ratios expected with conventional steady-state ion beams because of severe beam attenuation and intense bremstrahlung emission. A 5 GW (e.g., 100 keV, 50 kA) one-microsecond-duration beam would increase the signal by 10{sup 3} compared to a conventional 5 MW beam with signal-to-noise ratios comparable to those from a chopped conventional beam in one second.

Davis, H.A.; Bartsch, R.R.; Barnes, C.W. [and others

1996-06-01T23:59:59.000Z

453

Comparison of Nb/sub 3/Sn and NbTi superconductor magnet ITER devices  

SciTech Connect

The TETRA tokamak systems code is used to compare designs for the International Thermonuclear Experimental Reactor (ITER) that use Nb/sub 3/Sn and NbTi superconductor magnets. Similar minimum-cost devices are found with both types of conductors when superfluid helium (He-II) is used in conjunction with the NbTi. The cost of using NbTi with He-I cooling is much higher than that of using Nb/sub 3/Sn or NbTi with He-II cooling. Generally, the minimum-cost devices occur for peak fields at the toroidal field coil of about 11.5 - 13 T, depending on the physics requirements. Sensitivities to the allowable stress level indicate strong cost increases when the stress is reduced from the nominal 600-MPa level and weaker cost benefits when the stress is allowed to reach higher levels.

Galambos, J.D.; Peng, Y.K.M.; Reid, R.L.; Lubell, M.S.; Dresner, L.; Miller, J.R.

1989-03-01T23:59:59.000Z

454

Implementation of Iterative Map turbo Decoder on TMS320C40 DSP  

E-Print Network (OSTI)

. ENDM MAIN PROGRAM STORED AT ERAM BANK2 . TEXT MAIN GAM TMP ADR; LOAD PAGE POINTER IOSTACK PTR, SP ; LOAD STACK POINTER OCQNSTi, Rii; STORE CQNSTi IN Rii LDP LDI LDF LDI O, RO BIGGER LOOP: STI RO, OBIG ITER LDI O, RO INITIALIZE MEMORY... LDF ttAR2(IRO), RO, R1 Ri, R2 tAR3tt, IRO tARO, RO LDF MPYF3 ttAR2(IRO), RO, R1 D1 LOOP9: ADDF ADDI 16, AR2 RCPF R2, R1 MPYF3 Ri, R3, RO LOG2 MPYF3 Rii, RO, R1 STF Ri, tAR4tt LDI @STATE SIZE, RC RPTBD LOOP9 LDA %PRE ST ADR, AR3 LDF O...

Patil, Sunil S

2012-06-07T23:59:59.000Z

455

Progress of the ITER equatorial vis/IR wide angle viewing system optical design  

SciTech Connect

The equatorial vis/IR wide angle viewing system is present in four ITER diagnostic equatorial ports. This instrument will cover a large field of view with high spatial and temporal resolutions, to provide real time temperature measurements of plasma facing components, spectral data in the visible range, information on runaway electrons, and pellet tracking. This diagnostic needs to be reliable, precise, and long lasting. Its design is driven by both the tokamak severe environment and the high performances required for machine protection. The preliminary design phase is ongoing. Paramount issues are being tackled, relative to wide spectral band optical design, material choice, and optomechanical difficulties due to the limited space available for this instrument in the ports, since many other diagnostics and services are also present. Recent progress of the diagnostic optical design and status of associated R and D are presented.

Davi, M.; Corre, Y.; Guilhem, D.; Jullien, F.; Reichle, R.; Salasca, S.; Travere, J. M. [Association Euratom CEA, CEA/DSM/IRFM, Cadarache, 13108 Saint-Paul-lez-Durance (France); Cal, E. de la; Manzanares, A.; Pablos, J. L. de [Association Euratom CIEMAT, Av. Complutense 22, 28040 Madrid (Spain); Migozzi, J. B. [JBM Optique, 11 Av. de la division Leclerc, 92310 Sevres (France)

2008-10-15T23:59:59.000Z

456

An Integrated Approach for Creating Model Diesel Fuels  

Science Journals Connector (OSTI)

An Integrated Approach for Creating Model Diesel Fuels ... There is growing recognition that the optimal fuel properties (i) are dependent on the engine operating conditions and (ii) can be different for different parts of the drive cycle. ... The total solution to this problem belongs to the general and very difficult class of mixed-integer nonlinear problems (MINLP). ...

Ioannis P. Androulakis; Mark D. Weisel; Chang S. Hsu; Kuangnan Qian; Larry A. Green; John T. Farrell; Kiyomi Nakakita

2004-11-19T23:59:59.000Z

457

High conductivity electrolyte solutions and rechargeable cells incorporating such solutions  

DOE Patents (OSTI)

This invention relates generally to electrolyte solvents for use in liquid or rubbery polymer electrolyte solutions as are used, for example, in electrochemical devices. More specifically, this invention relates to sulfonyl/phospho-compound electrolyte solvents and sulfonyl/phospho-compound electrolyte solutions incorporating such solvents.

Angell, Charles Austen (Mesa, AZ); Zhang, Sheng-Shui (Tucson, AZ); Xu, Kang (Tempe, AZ)

1998-01-01T23:59:59.000Z

458

High conductivity electrolyte solutions and rechargeable cells incorporating such solutions  

DOE Patents (OSTI)

This invention relates generally to electrolyte solvents for use in liquid or rubbery polymer electrolyte solutions as are used, for example, in electrochemical devices. More specifically, this invention relates to sulfonyl/phospho-compound electrolyte solvents and sulfonyl/phospho-compound electrolyte solutions incorporating such solvents. 9 figs.

Angell, C.A.; Zhang, S.S.; Xu, K.

1998-10-20T23:59:59.000Z

459

SUMBMISSION TO TPAMI: OOI EXTRACTION BY LOCAL-GLOBAL ENERGY MINIMIZATION 1 Iterative local-global energy minimization for  

E-Print Network (OSTI)

SUMBMISSION TO TPAMI: OOI EXTRACTION BY LOCAL-GLOBAL ENERGY MINIMIZATION 1 Iterative local-global energy minimization for automatic extraction of object of interest Gang Hua, Member, IEEE, Zicheng Liu are with the Department of Electrical Engineering and Computer Science, Northwest- ern University, 2145 Sheridan Road

Wu, Ying

460

ITER pioneers receive prestigious Russian energy prize of June in Saint Petersburg, three pioneers of the international fusion project  

E-Print Network (OSTI)

Vladimir Putin, president of the Russian Federation. The laureates -- the Russian academician Evgeniy speech during the prize ceremony, President Putin said: "I will emphasize that as one of the world Putin in Saint Petersburg earlier today. Evgeniy Velikhov is one of the founders of the ITER project

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

An optimization technique on pseudorandom generators based on chaotic iterations Jacques M. Bahi, Xiaole Fang, and Christophe Guyeux*  

E-Print Network (OSTI)

-Comt´e, Besanc¸on, France Email:{jacques.bahi, xiaole.fang, christophe.guyeux}@univ-fcomte.fr Abstract--Internet in the previous International Conference on Evolving Internet (Internet 09, 10, and 11), three methods to build tests decrease when the power of chaotic iterations increase. Keywords-Internet security; Pseudorandom

Boyer, Edmond

462

IAEA FEC Saint Petersburg, Russia, 13-18 October 2014, O. Motojima The ITER Project Construction Status  

E-Print Network (OSTI)

IAEA FEC Saint Petersburg, Russia, 13-18 October 2014, O. Motojima Slide 1/14 OM14755 The ITER Project Construction Status IAEA FEC 13 to 18 October, 2014 Saint Petersburg, Russia Osamu Motojima President Barroso (11 July 2014) #12;IAEA FEC Saint Petersburg, Russia, 13-18 October 2014, O. Motojima

463

Absolute x-ray energy calibration over a wide energy range using a diffraction-based iterative method  

E-Print Network (OSTI)

Mineral Physics Institute, Stony Brook University, Stony Brook, New York 11794, USA 2 DepartmentAbsolute x-ray energy calibration over a wide energy range using a diffraction-based iterative;REVIEW OF SCIENTIFIC INSTRUMENTS 83, 063901 (2012) Absolute x-ray energy calibration over a wide energy

Duffy, Thomas S.

464

Exhibit 1B Patent Rights Acquisition by the Government ITER UT-B Contracts Div Page 1 of 6  

E-Print Network (OSTI)

of Energy patent waiver regulations at 10 CFR Part 784. (6) "Agency licensing regulations" and "applicable regulations at 10 CFR Part 781. (7) "Member" means members of the ITER Organization who are parties Organization composed of Representatives of the Members and as described in Article 6 of the Agreement. (10

Pennycook, Steve

465

Iterative Estimationof Antarctic Sea Ice Extent Using SeaWindsData QuinnP. Remund and David G. Long  

E-Print Network (OSTI)

an importantcomponent in global geophysical processes. For example, the insulating nature of sea ice impedes heatIterative Estimationof Antarctic Sea Ice Extent Using SeaWindsData QuinnP. Remund and David G. Long-378-4383,FAX: 801-378-6586 Abstract- Polar sea ice extent is an important input to global climate models

Long, David G.

466

White Paper for Developing Electromagnetic Particle Injector system for ITER on NSTX-U University of Washington (19 July 2012)  

E-Print Network (OSTI)

White Paper for Developing Electromagnetic Particle Injector system for ITER on NSTX-U University of Washington (19 July 2012) 1/2 White Paper@aa.washington.edu This white paper describes our plans for developing a new system for safely

467

2 Dynamic analysis of mixed ion beams/materials effects on the performance 3 of ITER-like devices  

E-Print Network (OSTI)

1 2 Dynamic analysis of mixed ion beams/materials effects on the performance 3 of ITER-like devices 4 Tatyana Sizyuk ,1 , Ahmed Hassanein 5 School of Nuclear Engineering, Center for Materials undersimultaneous ion penetration and mixing, scattering, reflection, physical and chemical sputtering, 20dynamic

Harilal, S. S.

468

PUBLISHED VERSION Effect of the minority concentration on ion cyclotron resonance heating in presence of the ITER-  

E-Print Network (OSTI)

PUBLISHED VERSION Effect of the minority concentration on ion cyclotron resonance heating.1063/1.4864528 #12;Effect of the minority concentration on ion cyclotron resonance heating in presence of the ITER, 17 Feb 2014 11:52:30 #12;Effect of the minority concentration on ion cyclotron resonance heating

469

DQS Advisor: A visual interface and knowledge-based system to balance dose, quality, and reconstruction speed in iterative  

E-Print Network (OSTI)

the limited projection data collected at reduced X-ray radiation is challenging, and iterative algorithms have concerns with regards to the X-ray dose delivered to the patient, low-dose Computed Tomography (CT) has and K Mueller Visual Analytic and Imaging Lab, Computer Science Department, Stony Brook University, NY

Mueller, Klaus

470

Background and radiation resistance tests of neutral particle analyzer detectors for ITER by using a fast neutron beam  

SciTech Connect

The radiation resistance and background sensitivity of scintillation (Hamamatsu H8500D photo-multiplier) and semiconductor (ORTEC BF-018-100-60 and BU-012-050-100) detectors to neutron and gamma radiation were investigated. Conclusions are drawn concerning the possibility of using such detectors in neutral particle analyzers that are being developed for ITER at the Ioffe Institute.

Afanasyev, V. I. [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation); Kozlovskii, S. S.; Makar'in, D. V. [St. Petersburg State Polytechnical University (Russian Federation); Mel'nik, A. D.; Mironov, M. I.; Nesenevich, V. G.; Petrov, M. P.; Petrov, S. Ya.; Chernyshev, F. V. [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)

2010-05-15T23:59:59.000Z

471

A collaboration opportunity for next step tokamaks: ITER and DEMO (specifically a next generation diagnostic: the pulsed polarimetry technique)  

E-Print Network (OSTI)

A collaboration opportunity for next step tokamaks: ITER and DEMO (specifically a next generation and developing diagnostic technique and propose it to the FESAC International Collaboration Panel as a topic for collaborative international research. The diagnostic is a remote sensing technique with potential for measuring

472

Iterative Informed Audio Data Hiding Scheme Using Optimal Filter Alejandro LoboGuerrero, Patrick Bas, Jol Linard  

E-Print Network (OSTI)

Iterative Informed Audio Data Hiding Scheme Using Optimal Filter Alejandro LoboGuerrero, Patrick.bas@lis.inpg.fr,joel.lienard@lis.inpg.fr Abstract- Audio watermarking is a method that allows the insertion of an imperceptible mark on an audio, the audio data set represents the host that supports the embedded information and it is considered as "noise

Paris-Sud XI, Université de

473

Japan considers conceding ITER site to France TOKYO, May 4, Kyodo -(EDS: UPDATING WITH MACHIMURA MEETING WITH BARNIER IN  

E-Print Network (OSTI)

Japan considers conceding ITER site to France TOKYO, May 4, Kyodo - (EDS: UPDATING WITH MACHIMURA MEETING WITH BARNIER IN 5TH GRAF, EU RESPONSE IN 6TH GRAF) Japan is considering giving up its bid to build Wednesday. The ballooning construction cost burden amid stalled negotiations has prompted Japan to consider

474

Evaluation of Static Mixer Flow Enhancements for Cryogenic Viscous Compressor Prototype for ITER Vacuum System  

SciTech Connect

As part of the U.S. ITER contribution to the vacuum systems for the ITER fusion project, a cryogenic viscous compressor (CVC) is being designed and fabricated to cryopump hydrogenic gases in the torus and neutral beam exhaust streams and to regenerate the collected gases to controlled pressures such that they can be mechanically pumped with controlled flows to the tritium reprocessing facility. One critical element of the CVC design that required additional investigation was the determination of flow rates of the low pressure (50 to 1000 Pa) exhaust stream that would allow for complete pumping of hydrogenic gases while permitting trace levels of helium to pass through the CVC to be pumped by conventional vacuum pumps. A sub-scale prototype test facility was utilized to determine the effectiveness of a static mixer pump tube concept, which consisted of a series of rotated twisted elements brazed into a 2-mm thick, 5-cm diameter stainless steel tube. Cold helium gas flow provided by a dewar and helium transfer line was used to cool the exterior of the static mixer pump tube. Deuterium gas was mixed with helium gas through flow controllers at different concentrations while the composition of the exhaust gas was monitored with a Penning gauge and optical spectrometer to determine the effectiveness of the static mixer. It was found that with tube wall temperatures between 6 K and 9 K, the deuterium gas was completely cryopumped and only helium passed through the tube. These results have been used to design the cooling geometry and the static mixer pump tubes in the full-scale CVC prototype

Duckworth, Robert C [ORNL] [ORNL; Baylor, Larry R [ORNL] [ORNL; Meitner, Steven J [ORNL] [ORNL; Combs, Stephen Kirk [ORNL] [ORNL; Ha, Tam T [ORNL] [ORNL; Morrow, Michael [ORNL] [ORNL; Biewer, Theodore M [ORNL] [ORNL; Rasmussen, David A [ORNL] [ORNL; Hechler, Michael P [ORNL] [ORNL; Pearce, R.J.H. [ITER Organization, Cadarache, France] [ITER Organization, Cadarache, France; Dremel, M. [ITER Organization, Cadarache, France] [ITER Organization, Cadarache, France; Boissin, Jean Claude [Consultant] [Consultant

2014-01-01T23:59:59.000Z

475

Evaluation of static mixer flow enhancements for cryogenic viscous compressor prototype for ITER vacuum system  

SciTech Connect

As part of the U.S. ITER contribution to the vacuum systems for the ITER fusion project, a cryogenic viscous compressor (CVC) is being designed and fabricated to cryopump hydrogenic gases in the torus and neutral beam exhaust streams and to regenerate the collected gases to controlled pressures such that they can be mechanically pumped with controlled flows to the tritium reprocessing facility. One critical element of the CVC design that required additional investigation was the determination of flow rates of the low pressure (up to 1000 Pa) exhaust stream that would allow for complete pumping of hydrogenic gases while permitting trace levels of helium to pass through the CVC to be pumped by conventional vacuum pumps. A sub-scale prototype test facility was utilized to determine the effectiveness of a static mixer pump tube concept, which consisted of a series of rotated twisted elements brazed into a 2-mm thick, 5-cm diameter stainless steel tube. Cold helium gas flow provided by a dewar and helium transfer line was used to cool the exterior of the static mixer pump tube. Deuterium gas was mixed with helium gas through flow controllers at different concentrations while the composition of the exhaust gas was monitored with a Penning gauge and optical spectrometer to determine the effectiveness of the static mixer. It was found that with tube wall temperatures between 6 K and 9 K, the deuterium gas was completely cryopumped and only helium passed through the tube. These results have been used to design the cooling geometry and the static mixer pump tubes in the full-scale CVC prototype.

Duckworth, Robert C.; Baylor, Larry R.; Meitner, Steven J.; Combs, Stephen K.; Ha, Tam; Morrow, Michael; Biewer, T. [Fusion and Materials for Nuclear System Division, Oak Ridge National Laboratory, Oak Ridge (United States); Rasmussen, David A.; Hechler, Michael P. [U.S. ITER Project Office, Oak Ridge National Laboratory, Oak Ridge (United States); Pearce, Robert J. H.; Dremel, Mattias [ITER Organization, 13115 St. Paul-lez-Durance (France); Boissin, J.-C. [Consultant, Grenoble (France)

2014-01-29T23:59:59.000Z

476

Flow distribution analysis on the cooling tube network of ITER thermal shield  

SciTech Connect

Thermal shield (TS) is to be installed between the vacuum vessel or the cryostat and the magnets in ITER tokamak to reduce the thermal radiation load to the magnets operating at 4.2K. The TS is cooled by pressurized helium gas at the inlet temperature of 80K. The cooling tube is welded on the TS panel surface and the composed flow network of the TS cooling tubes is complex. The flow rate in each panel should be matched to the thermal design value for effective radiation shielding. This paper presents one dimensional analysis on the flow distribution of cooling tube network for the ITER TS. The hydraulic cooling tube network is modeled by an electrical analogy. Only the cooling tube on the TS surface and its connecting pipe from the manifold are considered in the analysis model. Considering the frictional factor and the local loss in the cooling tube, the hydraulic resistance is expressed as a linear function with respect to mass flow rate. Sub-circuits in the TS are analyzed separately because each circuit is controlled by its own control valve independently. It is found that flow rates in some panels are insufficient compared with the design values. In order to improve the flow distribution, two kinds of design modifications are proposed. The first one is to connect the tubes of the adjacent panels. This will increase the resistance of the tube on the panel where the flow rate is excessive. The other design suggestion is that an orifice is installed at the exit of tube routing where the flow rate is to be reduced. The analysis for the design suggestions shows that the flow mal-distribution is improved significantly.

Nam, Kwanwoo; Chung, Wooho; Noh, Chang Hyun; Kang, Dong Kwon; Kang, Kyoung-O; Ahn, Hee Jae; Lee, Hyeon Gon [ITER Korea, National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of)

2014-01-29T23:59:59.000Z

477

Integrating the Integrators - A Roadmap to Success  

SciTech Connect

The U.S. Department of Energy Environmental Management's (DOE-EM) investments in science and technology, as well as science and technology investments associated with other parts of the DOE are aimed at meeting the Departments cleanup goals. These investments, primarily focused on EM's cleanup mission, comprise the Environmental Quality Research and Development (R&D) portfolios. Synchronizing EM's Cleanup Project Managers (operations facility and process owners throughout the DOE complex) operational needs with EM R&D including the extensive work of the six Focus Areas (major thrust areas within DOE-EM) has been a continuing challenge. This recent initiative to better integrate the R&D program is in response to evolving needs within the Department to apply proven system engineering methods to clarify requirements and define EM's process to effectively orchestrate their R&D Program. To optimize this partnership, DOE-EM's Integration Program is successfully unifying the operational needs with the R&D as described in this paper.

Olson, Craig Stott; Conner, Craig C

1999-03-01T23:59:59.000Z

478

Integrating the Integrators - A Roadmap to Success  

SciTech Connect

The U.S. Department of Energy Environmental Management's (DOE-EM) investments in science and technology, as well as science and technology investments associated with other parts of the DOE are aimed at meeting the Departments cleanup goals. These investments, primarily focused on EM's cleanup mission, comprise the Environmental Quality Research and Development (R&D) portfolios. Synchronizing EM's Cleanup Project Managers (operations facility and process owners throughout the DOE complex) operational needs with EM R&D including the extensive work of the six Focus Areas (major thrust areas within DOE-EM) has been a continuing challenge. This recent initiative to better integrate the R&D program is in response to evolving needs within the Department to apply proven systems engineering methods to clarify requirements and define EM's process to effectively orchestrate their R&D Program. To optimize this partnership, DOE-EM's Integration Program is successfully unifying the operational needs with the R&D as described in this paper.

C. Conner; C. Olson

1999-02-01T23:59:59.000Z

479

Solution of bubble number density with breakage and coalescence in a bubble column by Least-Squares Method  

Science Journals Connector (OSTI)

A steady-state model has been built for an air-water bubble column. The bubble number density constitutive equation has been formulated through integrating the bubble transport equation. Proper kernels for bubble breakage and coalescence rate have been chosen. The momentum balance of the gas phase is included in the model which leads to a set of non-linear differential equations. The model has been successfully solved by using the Least-Squares Method (LSM) with high accuracy and fast convergence. The successive iteration has been applied to the linearised equation set. The model shows excellent agreements with experimental data.

Zhengjie Zhu; Carlos A. Dorao; Hugo A. Jakobsen

2009-01-01T23:59:59.000Z

480

Integrated Micro Nano Systems Integrated Micro Nano Systems  

E-Print Network (OSTI)

#12;Integrated Micro Nano Systems 2 #12;Integrated Micro Nano Systems 3 Val Jones (Ed.) Symposium on Integrated Micro Nano Systems: Convergence of bio and nanotechnologies, Enschede, The Netherlands, June 2006 Micro Nano Systems 4 #12;Integrated Micro Nano Systems 5 Preface In order to explore the convergence

Al Hanbali, Ahmad

Note: This page contains sample records for the topic "integrated iterative solution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

ANOVA-HDMR structure of the higher order nodal diffusion solution  

SciTech Connect

Nodal diffusion methods still represent a standard in global reactor calculations, but employ some ad-hoc approximations (such as the quadratic leakage approximation) which limit their accuracy in cases where reference quality solutions are sought. In this work we solve the nodal diffusion equations utilizing the so-called higher-order nodal methods to generate reference quality solutions and to decompose the obtained solutions via a technique known as High Dimensional Model Representation (HDMR). This representation and associated decomposition of the solution provides a new formulation of the transverse leakage term. The HDMR structure is investigated via the technique of Analysis of Variance (ANOVA), which indicates why the existing class of transversely-integrated nodal methods prove to be so successful. Furthermore, the analysis leads to a potential solution method for generating reference quality solutions at a much reduced calculational cost, by applying the ANOVA technique to the full higher order solution. (authors)

Bokov, P. M.; Prinsloo, R. H.; Tomasevic, D. I. [South African Nuclear Energy Corporation - Necsa, Building 1900, P.O. Box 582, 0001 Pretoria (South Africa)

2013-07-01T23:59:59.000Z

482

Scalar-Tensor Gravity Cosmology: Noether symmetries and analytical solutions  

E-Print Network (OSTI)

In this paper, we present a complete Noether Symmetry analysis in the framework of scalar-tensor cosmology. Specifically, we consider a non-minimally coupled scalar field action embedded in the FLRW spacetime and provide a full set of Noether symmetries for related minisuperspaces. The presence of symmetries implies that the dynamical system becomes integrable and then we can compute cosmological analytical solutions for specific functional forms of coupling and potential functions selected by the Noether Approach.

A. Paliathanasis; M. Tsamparlis; S. Basilakos; S. Capozziello

2014-03-03T23:59:59.000Z

483

Constraints and Solutions of Quantum Gravity in Metric Representation  

E-Print Network (OSTI)

We construct the regularised Wheeler-De Witt operator demanding that the algebra of constraints of quantum gravity is anomaly free. We find that for a subset of all wavefunctions being integrals of scalar densities this condition can be satisfied. We proceed to finding exact solutions of quantum gravity being of the form of functionals of volume and average curvature of compact three-manifold.

A. B?aut; J. Kowalski-Glikman

1997-10-07T23:59:59.000Z

484

ADAPT: Design assistance for iterative analog synthesis Chieh Lin, Tino Heijmen, Jan ter Maten, Marq Kole  

E-Print Network (OSTI)

in Bluetooth applications. 1 Introduction Although the current trend in integrated circuit design used in digital circuitry. Designing analog and RF building blocks is a time- consuming and complicated of integrated circuits the designer has rela- tively much freedom in the selection of possible values through

Eindhoven, Technische Universiteit

485

Reverse engineering of integrated circuits  

DOE Patents (OSTI)

Software and a method therein to analyze circuits. The software comprises several tools, each of which perform particular functions in the Reverse Engineering process. The analyst, through a standard interface, directs each tool to the portion of the task to which it is most well suited, rendering previously intractable problems solvable. The tools are generally used iteratively to produce a successively more abstract picture of a circuit, about which incomplete a priori knowledge exists.

Chisholm, Gregory H. (Shorewood, IL); Eckmann, Steven T. (Colorado Springs, CO); Lain, Christopher M. (Pittsburgh, PA); Veroff, Robert L. (Albuquerque, NM)

2003-01-01T23:59:59.000Z

486

Integrating Management Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Mission Execution by Mission Execution by Integrating our Management Systems Integrating our Management Systems 1 W e e k l y O p e r a t i o n s M e e t i n g N o v e m b e r 1 , 2 0 1 1 M i c h a e l J . W e i s Pulling the Pieces Together for Improving DOE Management to Enable Mission Execution 2 ď‚— Process changes Process changes ď‚— Behavioral changes Behavioral changes ď‚— System changes System changes Process Change Approach Strengthening and Expediting Decision Making 3 Proposed Outcomes Horizontal Integration Incoming DOE Business Crosscutting Issues (i.e. NLDC input) Hi-level Roadblocks Operations Management Council Associate Deputy Secretary Collaborative Action Process Chief Operating Officer Weekly Operations Council (OMC) Super 8 Secretary (ADS) (CAP) Board (COOB) p Meeting Endorsement / Commitment Super 8 US Meetings COO Meetings

487

Integrating Program Component Executables  

NLE Websites -- All DOE Office Websites (Extended Search)

Integrating Integrating Program Component Executables on Distributed Memory Architectures via MPH Chris Ding and Yun He Computational Research Division, Lawrence Berkeley National Laboratory University of California, Berkeley, CA 94720, USA chqding@lbl.gov, yhe@lbl.gov Abstract A growing trend in developing large and complex ap- plications on today's Teraflop computers is to integrate stand-alone and/or semi-independent program components into a comprehensive simulation package. One example is the climate system model which consists of atmosphere, ocean, land-surface and sea-ice. Each component is semi- independent and has been developed at different institu- tions. We study how this multi-component multi-executable application can run effectively on distributed memory archi- tectures. We identify five effective execution modes and de- velop the MPH library to support

488

Chemistry, Reservoir, and Integrated Models  

Energy.gov (U.S. Department of Energy (DOE))

Below are the project presentations and respective peer review results for Chemistry, Reservoir and Integrated Models.

489

Towards an Integrated Planning and Adaptive Resource Management Architecture for Distributed Real-time Embedded Systems  

E-Print Network (OSTI)

propose new goals/objectives. Conventional resource management approaches, such as end-to-end task. Solution approach Integrated planning and adap- tive resource management. To address the planningTowards an Integrated Planning and Adaptive Resource Management Architecture for Distributed Real

Koutsoukos, Xenofon D.

490

Integrated European Energy RTD as Part of the Innovation Chain to Enhance  

E-Print Network (OSTI)

Integrated European Energy RTD as Part of the Innovation Chain to Enhance Renewable Energy Market solutions in a sustainable way to a major market breakthrough. The Advisory Group on Energy for the European : peter.lund@tkk.fi Abstract Integrated energy RTD strategies considering the whole innovation chain

491

Commercial Buildings Integration Program  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Buildings Buildings Integration Program Arah Schuur Program Manager arah.schuur@ee.doe.gov April 2, 2013 Building Technologies Office Program Peer Review 2 | Building Technologies Office eere.energy.gov Vision Commercial buildings are constructed, operated, renovated and transacted with energy performance in mind and net zero ready commercial buildings are common and cost-effective. Commercial Buildings Integration Program Mission Accelerate voluntary uptake of significant energy performance improvements in existing and new commercial buildings. 3 | Building Technologies Office eere.energy.gov BTO Goals: BTO supports the development and deployment of technologies and systems to reduce

492

Integrated heterodyne terahertz transceiver  

DOE Patents (OSTI)

A heterodyne terahertz transceiver comprises a quantum cascade laser that is integrated on-chip with a Schottky diode mixer. A terahertz signal can be received by an antenna connected to the mixer, an end facet or sidewall of the laser, or through a separate active section that can amplify the incident signal. The quantum cascade laser couples terahertz local oscillator power to the Schottky diode to mix with the received terahertz signal to provide an intermediate frequency output signal. The fully integrated transceiver optimizes power efficiency, sensitivity, compactness, and reliability. The transceiver can be used in compact, fieldable systems covering a wide variety of deployable applications not possible with existing technology.

Wanke, Michael C. (Albuquerque, NM); Lee, Mark (Albuquerque, NM); Nordquist, Christopher D. (Albuquerque, NM); Cich, Michael J. (Albuquerque, NM)

2012-09-25T23:59:59.000Z

493

Integrated system design report  

SciTech Connect

The primary objective of the integrated system test phase is to demonstrate the commercial potential of a coal fueled diesel engine in its actual operating environment. The integrated system in this project is defined as a coal fueled diesel locomotive. This locomotive, shown on drawing 41D715542, is described in the separate Concept Design Report. The test locomotive will be converted from an existing oil fueled diesel locomotive in three stages, until it nearly emulates the concept locomotive. Design drawings of locomotive components (diesel engine, locomotive, flatcar, etc.) are included.

Not Available

1989-07-01T23:59:59.000Z

494

Path Integral Junctions  

E-Print Network (OSTI)

We propose path integral description for quantum mechanical systems on compact graphs consisting of N segments of the same length. Provided the bulk Hamiltonian is segment-independent, scale-invariant boundary conditions given by self-adjoint extension of a Hamiltonian operator turn out to be in one-to-one correspondence with N \\times N matrix-valued weight factors on the path integral side. We show that these weight factors are given by N-dimensional unitary representations of the infinite dihedral group.

Satoshi Ohya

2012-01-24T23:59:59.000Z

495

Path Integral Junctions  

E-Print Network (OSTI)

We propose path integral description for quantum mechanical systems on compact graphs consisting of N segments of the same length. Provided the bulk Hamiltonian is segment-independent, scale-invariant boundary conditions given by self-adjoint extension of Hamiltonian operator turn out to be in one-to-one correspondence with N \\times N matrix-valued weight factors in the path integral side. We show that these weight factors are given by N-dimensional unitary representations of the infinite dihedral group.

Ohya, Satoshi

2012-01-01T23:59:59.000Z

496

Thermal Energy Storage for Electricity Peakdemand Mitigation: A Solution in  

NLE Websites -- All DOE Office Websites (Extended Search)

Thermal Energy Storage for Electricity Peakdemand Mitigation: A Solution in Thermal Energy Storage for Electricity Peakdemand Mitigation: A Solution in Developing and Developed World Alike Title Thermal Energy Storage for Electricity Peakdemand Mitigation: A Solution in Developing and Developed World Alike Publication Type Conference Proceedings Refereed Designation Refereed LBNL Report Number LBNL-6308E Year of Publication 2013 Authors DeForest, Nicholas, Gonçalo Mendes, Michael Stadler, Wei Feng, Judy Lai, and Chris Marnay Conference Name ECEEE 2013 Summer Study 3-8 June 2013, Belambra Les Criques, France Date Published 06/2013 Conference Location Belambra Les Criques, France Keywords electricity, energy storage, Energy System Planning & Grid Integration, peakdemand mitigation, thermal Abstract In much of the developed world, air-conditioning in buildings is the dominant driver of summer peak electricity

497

Set-valued solutions for non-ideal detonation  

E-Print Network (OSTI)

The existence and structure of steady gaseous detonation propagating in a packed bed of solid inert particles are analyzed in the one-dimensional approximation by taking into consideration frictional and heat losses between the gas and the particles. A new formulation of the governing equations is introduced that eliminates the well-known difficulties with numerical integration across the sonic singularity in the reactive Euler equations. The new algorithm allows us to determine that the detonation solutions as the loss factors are varied have a set-valued nature at low detonation velocities when the sonic constraint disappears from the solutions. These set-valued solutions correspond to a continuous spectrum of the eigenvalue problem that determines the velocity of the detonation.

Semenko, Roman; Kasimov, Aslan; Ermolaev, Boris

2013-01-01T23:59:59.000Z

498

Optimal homotopy asymptotic method for solving Volterra integral equation of first kind  

Science Journals Connector (OSTI)

Abstract In this paper, authors demonstrate the efficiency of optimal homotopy asymptotic method (OHAM). This is done by solving nonlinear Volterra integral equation of first kind. OHAM is applied to Volterra integral equations which involves exponential, trigonometric function as their kernels. It is observed that solution obtained by OHAM is more accurate than existing techniques, which proves its validity and stability for solving Volterra integral equation of first kind.

N. Khan; M.S. Hashmi; S. Iqbal; T. Mahmood

2014-01-01T23:59:59.000Z

499

Steering Committee Coordination and Integration  

E-Print Network (OSTI)

Management Identify Issues Suggest Solutions Coordinate Training Liaison with CSU Collaborative (SAFT

de Lijser, Peter

500

Physics and technology in the ion-cyclotron range of frequency on Tore Supra and TITAN test facility: implication for ITER  

SciTech Connect

To support the design of an ITER ion-cyclotron range of frequency heating (ICRH) system and to mitigate risks of operation in ITER, CEA has initiated an ambitious Research & Development program accompanied by experiments on Tore Supra or test-bed facility together with a significant modelling effort. The paper summarizes the recent results in the following areas: Comprehensive characterization (experiments and modelling) of a new Faraday screen concept tested on the Tore Supra antenna. A new model is developed for calculating the ICRH sheath rectification at the antenna vicinity. The model is applied to calculate the local heat flux on Tore Supra and ITER ICRH antennas. Full-wave modelling of ITER ICRH heating and current drive scenarios with the EVE code. With 20 MW of power, a current of 400 kA could be driven on axis in the DT scenario. Comparison between DT and DT(3He) scenario is given for heating and current drive efficiencies. First operation of CW test-bed facility, TITAN, designed for ITER ICRH components testing and could host up to a quarter of an ITER antenna. R&D of high permittivity materials to improve load of test facilities to better simulate ITER plasma antenna loading conditions.

Litaudon, X [CEA, France; Bernard, J. M. [CEA, IRFM, France; Colas, L. [CEA, France; Dumont, R. J. [CEA Cadarache, St. Paul lex Durance, France; Argouarch, A. [CEA Cadarache, St. Paul lex Durance, France; Bottollier-Curtet, H. [CEA, IRFM, France; Bremond, S. [CEA, IRFM, France; Champeaux, S. [CEA, IRFM, France; Corre, Y. [CEA Cadarache, St. Paul lex Durance, France; Dumortier, P. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Firdaouss, M. [CEA, IRFM, France; Guilhem, D. [CEA, IRFM, France; Gunn, J. P. [CEA, IRFM, France; Gouard, Ph. [CEA, DAM, DIF, Arpajon cedex, France; Hoang, G T [CEA, IRFM, France; Jacquot, Jonathan [CEA, IRFM, France; Klepper, C Christopher [ORNL; Kubic, M. [CEA, IRFM, France; Kyrytsya, V. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Lombard, G. [CEA, IRFM, France; Milanesio, D. [Politecnico di Torino; Messiaen, A. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Mollard, P. [CEA, IRFM, France; Meyer, O. [CEA Cadarache, St. Paul lex Durance, France; Zarzoso, D. [CEA, IRFM, France

2013-01-01T23:59:59.000Z