This paper is aimed at developing an Online Intranet College Management System (CMS) that of importance to either educational institution or a college. The system based application can be accessed throughout the specified department. may used for monitoring attendence Students as well staffs logging in also access search any information regarding Attendance staff and students marks will updated by staff. (C.M.S ) being developed engineering college maintain facilitate easy information. For...

Abstract The radiation performance of a right triangular microstrip antenna (RTMA) having two parallel narrow slits is simulated using IE 3D software, and later this designed on glass epoxy FR‐4 substrate with an air gap tested in free space. slit length, width, thickness are optimized to attain best from the modified RTMA structure. 1.0 mm resonates at different frequencies presents 29% bandwidth. matches well feed line for both resonance frequencies. E ‐ H ‐plane patterns presented four...

We report flux free growth of superconducting FeSe single crystals by an easy and versatile high temperature melt slow cooling method for first time. The room x-ray diffraction (XRD) on the surface piece such obtained showed [101] plane β-FeSe tetragonal phase. bulk powder XRD, being crushing part crystal chunk majority (∼87%) (space group P4/nmm) minority (∼13%) δ-FeSe hexagonal P63/mmc) crystalline phases. Detailed resolution transmission electron microscope images along with selected area...

Abstract The radiation performance of a compact gap‐coupled assembly patches forming the geometry elliptical patch antenna is simulated and tested using glass epoxy FR4 substrate material. This achieved by cutting conventional into three independent through two narrow slits parallel to minor axis patch. outer are identical in shape size, central excited inset probe feed. Two gap coupled center arrangement elements resonate at frequencies 3.41, 3.62, 5.54 GHz, respectively. first closely...

abstract The elemental Nb is mainly investigated for its eminent superconducting properties. In contrary, we report of a relatively unexplored property, namely, superior optoelectronic property in reduced dimension. We demonstrate here that nanostructured thin films (NNFs), under optical illumination, behave as room temperature photo-switches and exhibit bolometric features below critical temperature. Both photo-switch behavior are monitored by resistance change with light visible near...

The transport properties of superconducting NbN nanostructures in the form thin film, bridge width (w) = 50 μm and three meanders w 500, 250 100 nm have been investigated by resistance (R) measurements temperature (T) range 2 -300 K magnetic field (B) 0 - 7 Tesla. nanostructuring was carried out using Focused Ion Beam (FIB) milling. Reduction sample results significant changes normal state properties. For instance, observed metallic behavior film is lost increases drastically from 2.4 Ω to...

In this paper, we present a comprehensive study of electrical transport measurements on superconducting film NbN (thickness, d ∼ 50 nm) and its nanostructures fabricated using Focused Ion Beam (FIB) in the form one bridge (width, w µm) three meanders (w 500 nm, 250 100 nm). The resistance (R) current–voltage [V(I)] characteristics are measured as function temperature (2 K–16 K) magnetic field (0 T–7 T). photoresponse is under quasi-monochromatic light irradiation (wavelength ∼800 All our...

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Ayan Kumar Bandyopadhyay, Debasish Pal, Anil Saini, Deepender Kant, Sukalyan Saha, Lalit Mohan Joshi; Design of a Ku band miniature multiple beam klystron. AIP Conf. Proc. 9 March 2016; 1715 (1): 020052. https://doi.org/10.1063/1.4942734 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends...

Inductive Output Tube (IOT) is an amplifier that usually operates in UHF range. It electron tube whose basic structure similar to conventional vacuum devices. This device widely used broadcast applications but now being explored for scientific also specifically, particle accelerators and fusion plasma heating purposes. The paper describes the design approach of a spherical gridded gun 500 MHz, 100 kW CW power IOT. has been simulated optimized operating voltage current 40kV 3.5 A...

A 352.2 MHz klystron with an output power of 100 kw (CW) is under development at CSIR-CEERI for charged particle accelerator application. study the design RF interaction structure this has been carried out to get optimized parameters. Initially 1-D code AJDISK used predict parameters which using MAGIC(2D/3D), desired performance device. CST Microwave Studio input and coupler. The paper shall present various simulation results beam wave interaction.

Conventional klystrons using single beam of electrons have several limitations for increasing voltage or current which can be overcome multiple electron beams. The paper presents the design a gun practical 100 kW CW conventional klystron and then translation into five-beam reducing operating overall improvement in tube performance. parameters multi been derived from existing some scaling laws, are further optimized through CST Particle Studio. simulation results cross-validated Opera-3D...

The multiple-beam klystrons (MBKs) are well known for some distinct performance advantages over their single-beam versions. of the MBKs include higher average power, relatively lower operating voltages, bandwidth, and low individual beam current. However, design is more extensive requires thorough careful three-dimensional electromagnetic simulations analysis. In this article, a four-beam klystron compatible with predesigned electron gun reported. Starting simple analytical approach,...

The paper presents design, analysis and electromagnetic simulation of asymmetric structure pillbox type RF window for S-band high power applications. This study is motivated by 6 MW pulse peak 24 kW average S band klystron project. Asymmetrical pill box a new approach matching reduced waveguide in one side the window. simulated results are well matched to analytical experimental results. done using CST microwave studio code.

A Coaxial loop type coupler has been developed for testing of accelerator cavities LEHIPA Project (Low Energy High Intensity Proton Accelerator) at BARC. This RF is designed to handle up 50 kW power different frequencies (350 MHz and 352.2 with maximum 1% duty cycle). disc alumina window under-cuts on inner conductor integrated in the assembly impedance matching. design simpler than choke or undercut — overcut matching schemes coaxial windows. Full wave EM analysis presented here. The...

The multiple beam klystrons (MBK) offer some distinct advantages over their single versions including higher average power, relatively lower operating voltages, bandwidth and low individual current. In this paper the design of radio frequency (RF) section a klystron working in J band range is presented. RF simulation has been carried out using commercially available three dimensional electromagnetic code. A cold test model cavity fabricated its resonant characterized. Design cavities,...

This article describes the computer-aided design of RF-cavity for a S-band klystron operating at 2856 MHz. State-of-the-art electromagnetic simulation tools SUPERFISH, CST Microwave studio, HFSS and MAGIC have been used cavity design. After finalising geometrical details through simulation, it has fabricated characterised cold testing. Detailed results measurements are presented in this article.