Alcator C-Mod soft X-ray pulse height analysis system
Name
197105970-MIT.pdf
Description
Full printable version
Size
2.68 MB
Format
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Checksum (MD5)
cf34042690b6a753ed9e84e2a3943c6a
Author(s)
Gamboa, Eliseo (Eliseo J.)
Advisor(s)
John E. Rice.
Date Issued
2007
Publisher
Massachusetts Institute of Technology
Abstract
A pulse height analysis (PHA) system has been installed on the Alcator C-Mod magnetic confinement fusion experiment. The PHA utilizes a Si(Li) detector to measure soft X-rays in the 1-30 keV range with an energy resolution on the order of 100eV. A FASTComtec MCA-3 multichannel analyzer allows integration times of ims while the PHA supports counting rates of up to 80kHz. The thermal electron temperature is measured from the energy dependence of the intensity of the electron bremsstrahlung spectrum. Measurements of line radiation allows the PHA to identify impurity ions within each plasma shot. The result is a diagnostic that measures thermal electron temperatures while aiding in the indentification of heavy (Z 12) impurities.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2007.
Includes bibliographical references (leaves 59-60).
Subjects
Physics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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