Efficiency Enhancement in a Pre-Bunched Cerenkov Free Electron Laser
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 5
Abstract
An electron beam passing through a slow wave structure is unstable to an electromagnetic perturbation whose phase velocity equals the velocity of the beam. This phenomenon of cerenkov emission is the basis of all slow wave devices. The Cerenkov free electron laser (CFEL) model under consideration consists of a pre-bunched relativistic electron beam and a dielectric loaded waveguide. The increase in the growth rate and gain by using a pre-bunched electron beam in a Cerenkov free electron laser (CFEL) has been studied. The growth rate and gain is calculated at experimentally known CFEL and FEL parameters and it is seen that beam pre-bunching on Cerenkov free electron laser (CFEL) offers considerable enhancement in gain and efficiency when the phase of the pre-bunching electron beam is / 2 , i.e., when the pre-bunched beam is in the retarding zone. Moreover, the growth rate and gain of the CFEL is found to increase with the modulation index and reaches maximum when the modulation index approaching unity in addition to the frequency and wave number of the pre-bunched beam are comparable to that of the radiation wave, i.e., when the pre-bunched beam velocity is comparable to the phase velocity of the radiation wave.
Authors and Affiliations
Anuradha Bhasin, Anamika Jain, Tanima Ghosh
Keywords
Related Articles
- EP ID EP20330
- DOI -
- Views 264
- Downloads 4
Detection of Spatio-Textual Top-K Queries in Location-Based Services Using Reverse Keyword Search
A spatio-textual query retrieves the best objects with respect to a given location and a keyword set. A common solution is to employ a hybrid index which records the digest of the spatial and textual information. To eff...
A Study on Marketing Strategy Analysis of Samsung Mobile
This paper present about the marketing strategies of Samsung mobile. Fundamental research was been carried out to understand and identify the attitude of people towards the company. Various factors differing from the av...
Electrical Generation by using Vertical Axis Wind Turbine
Wind power capacity has experienced tremendous growth in the past decade. There are many loads (such as remote villages, islands, ships etc.) that are away from the main grid. Energy demand continues to grow, year after...
A Comparative Study of Scanning Electron Microscopy (SEM) of Multilayer ZNS and CDS Thin Films
The first thin solid films were obtained by electrolysis in 1864, B White Bunsen and Grover obtained metallic film in the year 1852, by thermal evaporation on explosion of a current carrying metal wire. The usefulness o...
Image Segmentation & Performance Evaluation
Images are widely used in all walks of life. Image use in daily needs insists upon a robust and result oriented way of analyzing images across all domains. Let it be remote sensing pictures, medical science critical ima...