NDLI: Multipactor suppression via higher-order modes

Content Provider	IEEE Xplore Digital Library
Author	Rice, S.A. Verboncoeur, J.
Copyright Year	2013
Description	Author affiliation: Michigan State Univ., East Lansing, MI, USA (Rice, S.A.; Verboncoeur, J.)
Abstract	Summary form only given. Multipactor is a resonant phenomenon in which an electromagnetic field causes a free electron to impact a surface, resulting in the surface emitting one or more secondary electrons. If the surface geometry and electromagnetic fields are appropriately arranged, the secondary electrons can then be accelerated and again impact a surface in the bounding geometry. If the net number of secondary electrons participating in multipactor is non-decreasing, then the process can repeat indefinitely. This phenomenon is of considerable practical interest in the design and operation of high power resonant structures. When the secondary electron yield (SEY) of a material measured as a function of the incident electron kinetic energy, the curve follows a similar shape for many materials: At low incident kinetic energies, the SEY is low; at intermediate kinetic energies, the SEY is maximized at a material-dependent energy; at high kinetic energies, the SEY tapers down to zero with increasing energy. In order multipactor to be self-sustaining, the average SEY over multipactor path must be at least unity. This means that multipactor can only be sustained within a certain material-dependent range of incident electron kinetic energies. This research investigates the feasibility of suppressing multipactor through the use of higher-order cavity modes which will modify the incident kinetic energy of impacting electrons. Since the SEY is dependent upon kinetic energy of the incident electron, our goal is modify impacting electron velocities to reduce the average SEY less than unity such that multipactor is not sustainable. Preliminary computer simulations are presented which demonstrate this concept in reducing or eliminating multipactor in a 2-dimensional coaxial cavity geometry.
Starting Page	1
Ending Page	1
File Size	91104
Page Count	1
File Format	PDF
ISBN	9781467351713
ISSN	07309244
DOI	10.1109/PLASMA.2013.6633276
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decision support systems
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in