NDLI: Diagnostic upgrades on MTX

Content Provider	IEEE Xplore Digital Library
Author	Nilson, D. Casper, T. Foote, J. Lasnier, C. Lopez, P. Rice, B. Stever, R. Hoshino, K. Odajima, K. Oda, T. Mizuno, K.
Copyright Year	1991
Description	Author affiliation: Lawrence Livermore Nat. Lab., CA, USA (Nilson, D.; Casper, T.; Foote, J.; Lasnier, C.; Lopez, P.; Rice, B.; Stever, R.)
Abstract	The MTX (Microwave Tokamak Experiment) experiment diagnostic capabilities were upgraded, with the addition of five new diagnostics. A second beamline was added on the existing Michelson ECE waveguide to accommodate the new polychromator. This provides four orders of magnitude higher time resolution (1-2 mu s) than the Michelson, with an improved spectral resolution (5 GHz) using up to nine separate channels. A four-channel ECE microwave receiver system using both an inside and an outside horn placed on the inner tokamak makes it possible to measure the hot electron emission generated from gyrotron and FEL (free-electron-laser) heating. A 15-channel interferometer on MTX was upgraded with the addition of polarimetry to provide measurements of the poloidal magnetic field. This upgrade uses a technique that determines the Faraday rotation by measuring the phase of a rapidly rotating polarization ellipse. The high-speed rotating optics (>60 K rpm) used to produce this state of polarization is reviewed. A two-channel O-mode reflectometer spanning 75-105 GHz is being added to measure the movements of the cutoff layer. By varying the frequency of this diagnostic, one can measure fluctuations deep within the plasma. A particle probe diagnostic currently under construction will measure the FEL electric field strength inside the tokamak plasma.<>
Starting Page	1205
Ending Page	1207
File Size	236310
Page Count	3
File Format	PDF
ISBN	0780301323
DOI	10.1109/FUSION.1991.218655
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-09-30
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic field measurement Plasma measurements Tokamaks Electromagnetic heating Optical interferometry Optical polarization Plasma diagnostics Optical waveguides Microwave measurements Electron emission
Content Type	Text
Resource Type	Article

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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
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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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