Multiple frequency electron cyclotron heating for the Levitated Dipole Experiment
Name
70691527-MIT.pdf
Description
Full printable version
Size
3.39 MB
Format
Adobe PDF
Checksum (MD5)
1feffcbcd88216c6fe5a6ef90dc7ad95
Author(s)
Mahar, Scott B
Advisor(s)
Jay Kesner.
Date Issued
2005
Publisher
Massachusetts Institute of Technology
Abstract
The use of multiple frequencies of electron cyclotron resonance heating (ECRH) in the Levitated Dipole Experiment (LDX) is an important tool that will tailor the plasma profiles. Initial LDX plasmas have been created using 2.45 GHz and 6.4 GHz, both at up to 3 kW. The construction and calibration of the ECRH system will be discussed and initial experimental results will be presented. The effects of different combinations of pulse lengths and powers will be examined in terms of the plasma diamagnetism. Different density profiles will be used to calculate the locations of the resonances and cutoffs. Locations where the plasma absorbs the microwave power will be simulated through computer codes. Equilibrium output of the program DIPOLEQ combined with MATLAB calculations using the Appleton-Hartree dispersion relation provide qualitative representations of where the power is absorbed in typical LDX plasmas.
Description
Thesis (S.M. and S.B.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 2005.
Includes bibliographical references (p. 75-76).
Subjects
Nuclear Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Engineering
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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