NDLI: Superconducting magnet for variable bandwidth traveling wave masers

Content Provider	IEEE Xplore Digital Library
Author	Troxel, L.
Copyright Year	1965
Abstract	In order to amplify microwave signals with optimum gain, the ruby crystal of a 4-Gc/s traveling wave maser requires a 3300-G magnetic field uniform to 0.1 percent. By properly varying the magnetic field along the length of the ruby crystal, the bandwidth of the maser amplifier can be increased at the expense of gain. A compact superconducting magnet is described, which provides the required magnetic field. The field is obtained from a short solenoid, which is made to appear infinitely long through the use of a low reluctance enclosure. A portion of the resulting uniform field can be modified by a superconducting trimmer coil imbedded in the low reluctance enclosure. This coil produces an adjustable stepped magnetic field which allows for varying maser bandwidth. Alternatively, it can be used to operate two independent masers in a single magnetic structure. A high degree of reliability is attained. Problems of flux jumping have been avoided by a design in which the diamagnetic (magnetic insulating) properties of superconducting materials play a minor role.
Sponsorship	IEEE Magnetics Society
Starting Page	378
Ending Page	381
Page Count	4
File Size	786875
File Format	PDF
ISSN	00189464
Volume Number	1
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1965-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Superconducting magnets Bandwidth Masers Magnetic fields Superconducting coils Magnetic flux Solenoids Superconducting microwave devices Insulation Magnetic properties
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials 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

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