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Gradient Structure Design of Flexible Waterborne ...

Gradient Structure Design of Flexible Waterborne Polyurethane Conductive Films for Ultraefficient Electromagnetic Shielding with Low Reflection Characteristic ACS Applied Materials & Interfaces ( IF 9.229) Pub Date : 00:00:00, DOI: 10.1021/acsami.8b05129


Extraordinary strain hardening by gradient structure

gradient structure, which exists in many biological systems such as teeth and bamboos. A typical gradient structure exhibits a sys-tematic change in microstructure along the depth on a macro-scopic scale. Gradient structures have been evolved and optimized over millions of years to make the biological systems strong and tough to survive nature.


Dark Current Simulation in High Gradient Accelerating ...

gradient[1] E mc th e = π λ 2, where m is the mass of the electron and λ is the wavelength in the accelerating structure. In order to achieve a high accelerating gradient with no associated dark current, higher RF frequency is preferable since the threshold gradient is inversely proportional to λ. The kinetic energy of the dark current ...


High Gradient and rf Breakdown Testing of a 110 GHz ...

In this talk, the measurements of high gradient and rf breakdown rates (BDRs) in a 110 GHz accelerating cavity externally-driven by an rf source are reported. The accelerating structure has a unique quasi-optical coupling scheme and was fabricated and assembled with a very high precision.


Download [PDF] High Gradient Accelerating Structure eBook

High Gradient Accelerating Structure. Download High Gradient Accelerating Structure PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get High Gradient Accelerating Structure book now. This site is like a library, Use search box in …


New local field quantity describing the high gradient limit ...

gradient is presented versus the structure number from Table I. Here the accelerating gradient of the structure is the average accelerating gradient for the tapered structures (numbers 1–9, 12, and 19 from Table I) and peak (or first cell) accelerating gradient for the …


High gradient, X-band and above, metallic RF structures

High gradient, X-band and above, metallic RF structures 15 September, 2015 2nd European Advanced Accelerator Concepts Workshop (EAAC 2015) La Biodola, Isola d'Elba, Italy, 13-19 September 2015


Advanced High Gradient RF Structure Development (Journal ...

Multi-mode accelerating structures aimed at increasing accelerating gradient are described. Such structures operating in several resonant, equidistantly-spaced, axisymmetric, TM-like eigenmodes allow reduction of exposure time to surface fields, reduction of high-field areas and reduction of those ...


RF Design of a High Gradient S-Band Travelling Wave ...

prototyping and high power testing of a high gradient compact S-band accelerating structure . The Thomx high gradient structure (HGS) is travelling wave, quasi constant gradient section and will operate at 2998.55 MHz (30°C in vacuum) in the 2 V/3 mode. The section consists of five constant impedance (CI) landings with 16 identical cells


High-gradient two-beam accelerator structure - NASA/ADS

A novel cavity structure is described that could be the basis for a two-beam, high-gradient, accelerator. Versions of the structure could be used for acceleration of beams of electrons, positrons, muons, protons, or heavier ions; with either electron or proton drive beams. The structure embodies cavities that are excited in several harmonically related eigenmodes, such that rf fields reach ...


Standing wave high gradient accelerator structure: Review ...

A novel type of standing wave linear accelerator structure has been developed at Varian Associates, Inc. This accelerator is an interlaced combination of two side‐cavity‐coupled standing wave substructures. An S‐band prototype accelerator guide with two identical substructures and total accelerating length of 10 cm has been built and successfully tested with a 2‐MW magnetron.


Image gradient - Wikipedia

An image gradient is a directional change in the intensity or color in an image. The gradient of the image is one of the fundamental building blocks in image processing.For example, the Canny edge detector uses image gradient for edge detection.In graphics software for digital image editing, the term gradient or color gradient is also used for a gradual blend of color which can be considered ...


Advances in high gradient normal conducting accelerator ...

High Gradient Test of a Clamped, Molybdenum Iris, X-Band Accelerator Structure at NLCTA Technical Report Doebert, S Inspired by the very high gradients (150-195 MV/m) achieved at CERN in 30 GHz accelerator structures made with tungsten and molybdenum irises and operated with short (16 ns) rf pulses [1], an X-band (11.4 GHz) version of this ...


Dielectric Lined High Gradient Accelerator Structure – PDF ...

The aim is to determine what the limits are for RF fields at the surfaces of selected dielectrics, and the resulting acceleration gradient that could be achieved in a working structure. The dielectric of principal interest in this study is artificial CVD diamond, on account of its advertised high breakdown field (H" GV/m for dc), low loss ...


3D of RDX-based aluminized high explosives with ...

Functionally graded materials (FGMs) are advanced engineering materials with spatially nonhomogeneous structure gradation [], which control the gradient changes of structure or composition to tailor materials with specific functions and properties [].These materials have emerged as exciting new materials for defense [3, 4], electronic components [5, 6] and bioengineering [7,8,9], due to the ...


High gradient structure design and beam instabilities study

Hybrid damped structure. Design of CLIC Half milling structure: 1. No electrical field at bonding surface; 2. Transverse wakefield in Y polarization damped by the gap (iris slotted damping); 3. 80~90 MV/m gradient achieved in the high power test. Design of . CLIC. Half milling structure with damping waveguides: Transverse wakefield in


High-gradient behavior of a dipole-mode rf structure ...

A normal-conducting, X-band traveling wave structure operating in the dipole mode has been systematically high-gradient tested to gain insight into the maximum possible gradients in these types of structure. Measured structure conditioning, breakdown behavior, and achieved surface fields are reported as well as a postmortem analysis of the breakdown position and a scanning electron …


W-Band free electron lasers for high gradient structure ...

There are two known, and quite different routes to a power source for a high-gradient mm-wave linac. The first is the class of concepts known as two-beam accelerators [19].For these concepts one ...


Strengthening the FeCoCrNiMo0.15 high entropy alloy by a ...

In present work, a gradient structured FeCoCrNiMo 0.15 high entropy alloy (HEA) is processed by shot peening treatment. Microstructures of the gradient structured HEA are characterized by electron backscatter diffraction (EBSD), electron channeling contrast imaging (ECCI) and transmission electron microscopy (TEM).


Simultaneously enhancing strength and ductility of a high ...

High-entropy alloy Gradient structure Hierarchical nanotwin Rotationally accelerated shot peening Mechanical properties ABSTRACT Although many high-entropy alloys (HEAs) possess excellent mechanical properties, they are not exempt from the common dilemma of strength–ductility trade-off in most cases, which limits their potential applications.


S-band high-gradient structure at the Argonne RF Test ...

A voltage gradient as high as 52 MV/m has recently been demonstrated [9] at Argonne for a five-cell electron beam structure [13] operating at the same frequency of 2856 MHz and pulse structure ...


ACE3P Application in High Gradient Structure Research

Z. Li US High Gradient Workshop, SLAC, Feb 2011 Outline • Parallel Finite Element Code Suite ACE3P • ACE3P Application to High Gradient R&D (1) PBG Structure (2) X-Band Gun (3) X-Band klystron (4) CLIC Cell MP (5) CLIC PETS & structure


High Gradient Accelerating Structure

R&D of a C-band (5712 MHz) high gradient traveling-wave accelerating structure has been in progress at Shanghai Institute of Applied Physics (SINAP). The prototype and new C-band accelerating structures have already been fabricated. In this paper, some details of …


A High-Gradient Test of a 30 GHz Molybdenum-Iris Structure

Structure Inspection after Conditioning [5] S. Döbert et al., "High Gradient Performance of NLC/GLC X-Band Accelerating Structures", PAC The irises and cells were systematically inspected at the 2005 end of the experiment and scanning electron microscope (SEM) images of the first and last irises of the structure are shown in fig. 6.


Download [PDF] High Gradient Accelerating Structure ...

High Gradient Accelerating Structure Studies And Their Application In Hadrontherapy written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.


High Gradient Accelerating Structure for Low Energy ...

Developing a high gradient linear accelerator capable of fast and efficient tumor tracking and treatment through the 4D spot scanning technique would offer a promising approach to smultaneously reduce the cost and improve the quality of the treatment. ... we have developed a novel accelerating structure for protons and carbon ions operating at ...


Gradient Structure Design of Flexible Waterborne ...

The gradient distribution of rGO@Fe 3 O 4 over the whole thickness range forms an efficient electromagnetic wave absorption network that endows the film with a strong absorption ability on the top side, while a thin layer of high-density T-ZnO/Ag at the bottom constructs a highly conductive network that provides an excellent electromagnetic ...


Experimental High Gradient Testing of a 17.1 GHz Photonic ...

We report the design, fabrication and high gradient testing of a 17.1 GHz Photonic Band Gap (PBG) accelerator structure. Photonic band-gap (PBG) structures are promising candidates for electron accelerators capable of high-gradient operation because they have the inherent damping of high order modes required to avoid beam breakup instabilities.


Enhanced high-temperature tensile property by gradient ...

The high-temperature tensile property of high-Nb-containing TiAl alloy was successfully enhanced via a gradient twin structure. The strength and ductility of the as-forged TiAl alloy were 494 MPa and 4.6%, respectively, which were enhanced to 557 MPa and 28%, respectively, by a pre-torsion of 180°, and to 592 MPa and 47.0%, respectively, by a ...


Short-pulse wakefield structure R&D for high gradient and ...

High-frequency wakefield structures: Recently, interest in high-frequency structures has increased. It is well known that such structures have the advantage of strong beam-structure interaction (high gradient) and small transverse size, which could potentially reduce the construction cost of future colliders.


RF DESIGN OF A HIGH GRADIENT S-BAND TRAVELLING …

The Thomx high gradient structure (HGS) is travelling wave (TW), quasi constant gradient section and will operate at 2998.55 MHz (30°C in vacuum) in the 2 /3 mode. The optimization of the cell shape (Electromagnetic design) has been carried out with the codes …


High Gradient Accelerating Structure - Proceedings Of The ...

Read "High Gradient Accelerating Structure - Proceedings Of The Symposium On The Occasion Of 70th Birthday Of Junwen Wang" by available from Rakuten Kobo. This proceedings volume, for the symposium in honor of Junwen Wang's 70th anniversary, is dedicated to his many importan...