Abstract
Improvements have been made in the TRW barium ion beam magnetic and space potential diagnostic1 to increase the signal-to-noise ratio which have made measurements in the STM hydrogen plasma possible. These improvements include larger solid angle collection optics, higher delivered laser power, and higher ion-beam densities. The improvements have been more than sufficient to allow measurements of plasma parameters under any desired operating conditions of the STM device. Measurements of plasma diamagnetism, space potential, and potential fluctuations have been made under various ECRH plasma conditions. Diamagnetism β of 14% with stored energy of 13.4 J have been observed under ‘‘ring’’ conditions. Under ‘‘disk’’ conditions and similar stored energy diamagnetism over 80% of the plasma diameter has been observed peaking at ΔB=150 G out of 2000 G at r=0. This work was supported by U. S. DOE Contracts DE-AC03-79ET1017 and DE-AC03-85ER51089.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
