Filters
Results 1 - 10 of 307445
Results 1 - 10 of 307445.
Search took: 0.11 seconds
Sort by: date | relevance |
AbstractAbstract
No abstract available
Primary Subject
Record Type
Journal Article
Journal
Journal of Low Temperature Physics; v. 4(4); p. 401-414
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Ries, G.; Brechna, H.
Kernforschungszentrum Karlsruhe (F.R. Germany). Inst. fuer Experimentelle Kernphysik1972
Kernforschungszentrum Karlsruhe (F.R. Germany). Inst. fuer Experimentelle Kernphysik1972
AbstractAbstract
No abstract available
Source
Jan 1972; 54 p; With figs., tabs. and 24 refs. With abstract in German and English.
Record Type
Report
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Shimada, Katsuhiro; Moriyama, Shinichi, E-mail: shimada.katsuhiro@qst.go.jp2020
AbstractAbstract
[en] In the superconducting tokamak device JT-60SA, a power supply system that supplies and controls the DC power for the superconducting toroidal and poloidal magnetic field coils is indispensable for use in plasma control. This system is a large-scale power supply system that effectively reuses the existing power supply system for the critical plasma test device JT-60 and combines it with a newly fabricated power source. This paper introduces the overall configuration and features of the large power supply system that supplies power to the superconducting coils, and various power supply devices that constitute the system. (A.O.)
[ja]
超伝導トカマク装置JT-60SAでは超伝導トロイダルおよびポロイダル磁場コイルに対し,プラズマ制御で必要となる直流電力を供給および制御する電源設備が必須となる.本設備は,既設の臨界プラズマ試験装置JT-60用電源設備を有効に再利用し,新規製作した電源と組み合わせた大型電源設備である.本章では,超伝導コイルへ給電するための大型電源設備の全体構成や特徴およびそれを構成する各電源機器について紹介する.(著者)Original Title
超伝導コイルへ給電するための大型電源設備
Source
Available from http://www.jspf.or.jp/journal/bn_kaishi.html; 12 refs., 10 figs., 1 tab.; 雑誌名:プラズマ・核融合学会誌
Record Type
Journal Article
Journal
Purazuma, Kaku Yugo Gakkai-Shi; ISSN 0918-7928;
; v. 96(7); p. 341-346

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Record Type
Journal Article
Journal
Journal of Applied Physics; v. 44(7); p. 3319-3322
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Metal vapor vacuum arc ion sources have several unique characteristics. They are easy to operate and produce high ion flux. Arc sources do not require toxic compounds and they can generate a variety of single and mixed ion species that are difficult to obtain with gas sources. Arc sources are particularly attractive for producing boron ions, a critical species for ion implantation. This paper describes progress on a Phase 2 SBIR program to improve vacuum arc source technology. In the area of diagnostics, the authors have tested a versatile time-of-flight detector to analyze the ion content of flowing plasmas. The compact unit and modular power supply has application to source analysis and plasma processing experiments. Two promising arc triggering methods for long-term operation have been demonstrated. The first uses a piezo-electric pulse valve to inject a short pulse of starting gas directly in the arc gap. The second uses a staged vacuum arc to create an instantaneous high density of cathode material. This inexpensive and effective trigger is a modular unit that can easily be incorporated in a variety of discharge system. Source development has centered on long-pulse units (10--50 ms) with applied local magnetic fields to improve extraction efficiency and arc stability. Experiments with several configurations have led to a compact unit that mounts on a standard 2.75 inch Conflat flange. The source is simple to disassemble for cathode replacement. Triggering is easy because the source uses a ground cathode configuration. Arrays of these sources can be run in parallel to provide high ion fluxes for processing applications. The most significant recent development is the demonstration of boron ion generation using lanthanum hexaboride cathodes. In initial experiments, the source produced boron fluxes of approximately 5 mA/cm2 over a 150 ms pulse. Stable operation was observed at arc currents as low as 5 A
Primary Subject
Source
Anon; 252 p; ISBN 0-7803-2006-9;
; 1994; p. 84; IEEE Service Center; Piscataway, NJ (United States); 1994 Institute of Electrical and Electronic Engineers (IEEE) international conference on plasma science; Santa Fe, NM (United States); 6-8 Jun 1994; IEEE Service Center, 445 Hoes Lane, Piscataway, NJ 08854-4150 (United States)

Record Type
Book
Literature Type
Conference
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] In a structural system with piezoelectric actuators, a damping effect can be achieved by properly switching the voltage on the actuators. Switched voltage methods based on piezoelectric actuators, including active bang–bang control and semi-active synchronized switch damping methods, have become an important category of vibration damping approach. Since the switching phase and switching frequency are critical factors to damping performance, their influence on converted energy in a piezoelectric actuator is investigated under the condition that the switched voltage is constant. The converted energy with randomly switched voltage is also investigated theoretically and numerically. Finally an example of beam vibration with synchronized switch damping on inductor (SSDI) control and synchronized switch damping on voltage source (SSDV) control is used to illustrate how the switching frequency can affect the control performance of different modes in a multiple-degree-of-freedom system
Primary Subject
Source
S0964-1726(11)69271-9; Available from http://dx.doi.org/10.1088/0964-1726/20/1/015008; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Smart Materials and Structures (Print); ISSN 0964-1726;
; v. 20(1); [16 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Mateu, Loreto; Zessin, Henrik; Spies, Peter, E-mail: loreto.mateu@iis.fraunhofer.de, E-mail: henrik.zessin@iis.fraunhofer.de, E-mail: peter.spies@iis.fraunhofer.de2013
AbstractAbstract
[en] AC-DC converters employed for harvesting power from piezoelectric transducers can be divided into linear (i.e. diode bridge) and non-linear (i.e. synchronized switch harvesting on inductor, SSHI). This paper presents an analytical technique based on the measurement of the impedance circle of the piezoelectric element to determine whether either diode bridge or SSHI converter harvests more of the available power at the piezoelectric element
Primary Subject
Source
PowerMEMS 2013: 13. international conference on micro and nanotechnology for power generation and energy conversion applications; London (United Kingdom); 3-6 Dec 2013; Available from http://dx.doi.org/10.1088/1742-6596/476/1/012111; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
Journal of Physics. Conference Series (Online); ISSN 1742-6596;
; v. 476(1); [5 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Schneider-Muntau, H.J.; Hackbarth, K.
Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V., Goettingen (Germany, F.R.)1979
Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V., Goettingen (Germany, F.R.)1979
AbstractAbstract
[en] The high-field magnet consists of several single concentrical coils of different thickness and length, being mechanically and electrically separated from each other along their winding length. They are contained in a casing and have got distances with respect to each other, coolant being able to flow through the interspaces. The windings of each single coil are glued to each other by means of adhesive or casting resin, which may be mixed with silanized glass spheres. (RW)
[de]
Der Hochfeld-Magnet besteht aus mehreren, unterschiedlich dicken und langen konzentrischen Einzelspulen, die ueber ihre Wickellaenge hin mechanisch und elektrisch voneinander getrennt sind. Sie sitzen in einem Gehaeuse und weisen Abstaende zueinander auf, so dass Kuehlmittel durch die Zwischenraeume fliessen kann. Die Windungen jeder Einzelspule sind mittels Klebstoff oder Giessharz, die mit silanisierten Glaskugeln versetzt sein koennen, miteinander verklebt. (RW)Original Title
Normal- oder supraleitende Magnetspule
Primary Subject
Source
27 Sep 1979; 30 p; DE PATENT DOCUMENT 2811504/A/; Available from Deutsches Patentamt, Muenchen, Germany, F.R
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Neubauer, M; Wallaschek, J, E-mail: neubauer@ids.uni-hannover.de2008
AbstractAbstract
[en] Piezoelectric shunt damping with mechanical structures has been an active research topic for several years. Standard passive techniques suffer from a very limited and frequency-dependent damping performance. Recently, semi-active switching techniques—namely SSDI (synchronized switch damping on inductor) and SSDV (synchronized switch damping on voltage source) techniques—have been proposed, which are capable of adapting to variations of the excitation frequency without reduction in performance. Crucial for the damping performance is the tuning of the shunt parameters and the precise switching sequence. In this paper, an analytical analysis of the switching technique is presented, which includes the influence of all shunt parameters and the switching times. New results concerning the optimal tuning of the inductance and the switching sequence are obtained, and it is shown that the enhanced SSDV technique can be equated with the SSDI technique, albeit with an increased effective piezoelectric force factor. Measurements are conducted to validate the theoretical results
Primary Subject
Secondary Subject
Source
S0964-1726(08)66976-1; Available from http://dx.doi.org/10.1088/0964-1726/17/3/035003; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Smart Materials and Structures (Print); ISSN 0964-1726;
; v. 17(3); [9 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] A superconducting microbridge has been used as a probe to detect quasiparticle diffusion currents and ''heating'', produced by a phase-slip center (PSC) in a second microbridge. The critical current of the detector is modulated by the voltage V/sub PSC/ across the PSC. This modulation provides a measure of quasiparticle current I/sub Q/ thru the PSC and gives I/sub Q/ = V/sub PSC//R/sub D/ for low voltages, R/sub D/ being the high-current differential resistance of the PSC
Record Type
Journal Article
Journal
Physical Review Letters; v. 38(16); p. 915-918
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
1 | 2 | 3 | Next |