Bellows

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A bellows is a device for delivering pressurized air in a controlled quantity to a controlled location. (Wikipedia.org)






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2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted papers will be peer reviewed. Accepted high quality papers will be presented in oral and postersessions, will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE


2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)

Technical presentations will range from the fundamental physics of electron emission and modulated electron beams to the design and operation of devices at UHF to THz frequencies, theory and computational tool development, active and passive components, systems, and supporting technologies.System developers will find that IVEC provides a unique snapshot of the current state-of-the-art in vacuum electron devices. These devices continue to provide unmatched power and performance for advanced electromagnetic systems, particularly in the challenging frequency regimes of millimeter-wave and THz electronics.Plenary talks will provide insights into the history, the broad spectrum of fundamental physics, the scientific issues, and the technological applications driving the current directions in vacuum electronics research.


2020 IEEE 70th Electronic Components and Technology Conference (ECTC)

ECTC is the premier international conference sponsored by the IEEE Components, Packaging and Manufacturing Society. ECTC paper comprise a wide spectrum of topics, including 3D packaging, electronic components, materials, assembly, interconnections, device and system packaging, optoelectronics, reliability, and simulation.


2020 IEEE International Conference on Industrial Technology (ICIT)

ICIT focuses on industrial and manufacturing applications of electronics, controls, communications, instrumentation, and computational intelligence.


2020 IEEE International Conference on Robotics and Automation (ICRA)

The International Conference on Robotics and Automation (ICRA) is the IEEE Robotics and Automation Society’s biggest conference and one of the leading international forums for robotics researchers to present their work.


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Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


Consumer Electronics, IEEE Transactions on

The design and manufacture of consumer electronics products, components, and related activities, particularly those used for entertainment, leisure, and educational purposes


Engineering in Medicine and Biology Magazine, IEEE

Both general and technical articles on current technologies and methods used in biomedical and clinical engineering; societal implications of medical technologies; current news items; book reviews; patent descriptions; and correspondence. Special interest departments, students, law, clinical engineering, ethics, new products, society news, historical features and government.


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18-GHz IMPATT diode oscillator

1976 IEEE International Solid-State Circuits Conference. Digest of Technical Papers, 1976

A stable 18-GHz IMPATT diode transmitter oscillator, which includes an internal varactor frequency modulator, will be covered. Oscillator satifies requirements of a digital radio system over the temperature range of -25°C to +74°C.


Mechanical integration of an RF volume source and einzel lens LEBT to the SSC RFQ

Proceedings of International Conference on Particle Accelerators, 1993

The Superconducting Super Collider (SSC) LINAC Injector is currently operating with an RF-driven volume ion source coupled with an einzel lens low energy beam transport (LEBT). The ion source, LEBT and beam diagnostics are integrated into a compact vacuum enclosure which is mounted to the upstream endwall of the Radio Frequency Quadrupole (RFQ). Beam dynamic requirements imposed a minimum longitudinal ...


Estimation of the longitudinal impedance of the ATF damping ring

Conference Record of the 1991 IEEE Particle Accelerator Conference, 1991

In order to estimate the possibility of bunch lengthening in the ATF damping ring, the longitudinal broadband impedance of the ring was evaluated. The inductance was so small, that the bunch lengthening should not be observed in the ATF damping ring. It is found that the total mod Z/sub ////n mod is less than 0.3 infinity . Therefore bunch lengthening ...


Foreign material evaluation equipment: collecting method

SICE 2003 Annual Conference (IEEE Cat. No.03TH8734), 2003

In injector manufacturing, mixed defectives are incurred by foreign materials. We developed a foreign material evaluation equipment to show the specification of foreign material reduction and defect generation. This paper discusses our foreign material collecting method with decreased adhesion strength and increased cleaning force.


Electroluminescence yield for /spl lambda/>165 nm in neon-xenon mixtures: experimental results

1996 IEEE Nuclear Science Symposium. Conference Record, 1996

The electroluminescence yield for /spl lambda/>165 nm in different neon-xenon mixtures is studied as a function of the reduced electric field. These studies were performed using a uniform-field gas proportional scintillation counter. The experimental values obtained for the scintillation and ionization thresholds decrease from approximately 1 and 6 Vcm/sup -1/ torr/sup -1/ for 100% xenon, to about 0.5 and 3.8 ...


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IEEE-USA E-Books

  • 18-GHz IMPATT diode oscillator

    A stable 18-GHz IMPATT diode transmitter oscillator, which includes an internal varactor frequency modulator, will be covered. Oscillator satifies requirements of a digital radio system over the temperature range of -25°C to +74°C.

  • Mechanical integration of an RF volume source and einzel lens LEBT to the SSC RFQ

    The Superconducting Super Collider (SSC) LINAC Injector is currently operating with an RF-driven volume ion source coupled with an einzel lens low energy beam transport (LEBT). The ion source, LEBT and beam diagnostics are integrated into a compact vacuum enclosure which is mounted to the upstream endwall of the Radio Frequency Quadrupole (RFQ). Beam dynamic requirements imposed a minimum longitudinal space of only 23.5 cm, thus creating a very challenging packaging problem. In addition, optimum beam matching to the RFQ specified a maximum gap of 1 cm between the LEBT and the entrance endwall face, thereby excluding the use of a bellows between the LEBT chamber and the RFQ. Vacuum system induced loads and vibrations are isolated from the beamline components by the use of a straddling support frame which is an integral component of the vacuum system/support cart. This paper will describe some of the unique aspects of the mechanical design resulting from beam requirements, high gas load, availability of the vacuum system and the need for unconstrained attachment to the RFQ. In addition, the mobile installation cart and the fully automated vacuum control system will be discussed.<<ETX>>

  • Estimation of the longitudinal impedance of the ATF damping ring

    In order to estimate the possibility of bunch lengthening in the ATF damping ring, the longitudinal broadband impedance of the ring was evaluated. The inductance was so small, that the bunch lengthening should not be observed in the ATF damping ring. It is found that the total mod Z/sub ////n mod is less than 0.3 infinity . Therefore bunch lengthening should not be a problem in the ATF damping ring.<<ETX>>

  • Foreign material evaluation equipment: collecting method

    In injector manufacturing, mixed defectives are incurred by foreign materials. We developed a foreign material evaluation equipment to show the specification of foreign material reduction and defect generation. This paper discusses our foreign material collecting method with decreased adhesion strength and increased cleaning force.

  • Electroluminescence yield for /spl lambda/&gt;165 nm in neon-xenon mixtures: experimental results

    The electroluminescence yield for /spl lambda/>165 nm in different neon-xenon mixtures is studied as a function of the reduced electric field. These studies were performed using a uniform-field gas proportional scintillation counter. The experimental values obtained for the scintillation and ionization thresholds decrease from approximately 1 and 6 Vcm/sup -1/ torr/sup -1/ for 100% xenon, to about 0.5 and 3.8 Vcm/sup -1/ torr/sup -1/ for 20% xenon, to 0.4 and 2.8 Vcm/sup -1/ torr/sup -1/ for 10% xenon and to 0.3 and 2.2 Vcm/sup -1/ torr/sup -1/ for 5% xenon. Detector energy resolutions for the Al K line (1.5 keV) are 15% for 20% xenon, 19% for 10% xenon and 22% for 5% xenon.

  • Experimental Investigation of Heating Phenomena in Linac Mechanical Interfaces from RF Field Penetration

    In a high duty-factor, high-current, drift-tube linear accelerator, a critical interface exists between the drift-tube stem and the tank wall. This interface must provide vacuum integrity and RF continuity, while simultaneously allowing alignment flexibility. Because of past difficulties with RF heating of vacuum bellows and RF joints encountered by others, a paucity of available information, and the high reliability requirement for the Fusion Materials Irradiation Test (FMIT) accelerator, a program was initiated to study the problem. Because RF heating is the common failure mode, an attempt was made to find a correlation between the drift-tubestem/linac-tank interface geometry and RF field penetration from the tank into the interface region. Experiments were performed at 80 MHz on an RF structure designed to simulate the conditions to which a drift-tube stem and vacuum bellows are exposed in a drift-tube linac. Additional testing was performed on a 367-MHz model of the FMIT prototype drift-tube linac. Experimental results, and a method to predict excessive RF heating, is presented. An experimentally tested solution to the problem is discussed.

  • Component Behavior Modeling and Relativity Analysis

    Component behavior modeling and relativity analysis is a crucial issue for the component-based software maintenance and evolution. There are two prerequisites for each application of maintenance or evolution strategy. The first is modeling the behavior of the evolving component, and the second is determining the components which are behavior related with the evolving one. In this paper we provided a method to model component behavior and analyze behavior relativity between two components with a collection of algorithms. This method is helpful for both researchers and engineers to determine whether their evolution strategy is executable for the evolving software.

  • An Expansion Joint for a Millimeter Waveguide Transmission System

    An expansion joint for a circular (TE/sub 01/) waveguide millimeter wave transmission system was fabricated for a 51 mm. diameter guide. The spurious mode level was measured from 50-70 GHz and found to be at least -40dB lower than the incident TE/sub 01/ level. The measured results compared favorably with an analytic prediction of a -50dB or lower spurious mode level from 40-110 GHz.

  • Proposal of line element chain coding

    Line Element Chain Coding (LECC) method, which orients two-dimensional structure descriptive coding, for two-level pictures is proposed. This method encodes direction, coordinate, length, width, and shape of segment. Shape is encoded by nine types of line element chain codes. Compression rate for CCITT's test charts, vector representation coding and progressive picture coding as application of this method are described.

  • Spatial Structures In Nonlinear Nonequilibrium Plasma

    None



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Guide to Specifications for Gas-Insulated, Electric Power Substation Equipment

This guide covers the technical requirements for the design, fabrication, testing, installation, and in-service performance of gas-insulated substations(GIS). In line with the user functional one-line diagram, the supplier should furnish all components of the GIS such as circuit breakers(CB), disconnect switches(DS), maintenance ground switches (MGS), fast-acting ground switches(FGS), voltage transformers(VT), current transformers(CT), SF6-to-air bushings, SF6-to-cable terminations, surge arresters, all the ...



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