Download or read book High Resolution Visible Continuum Imaging Diagnostic on the Alcator C Mod Tokamak written by Earl S. Marmar and published by . This book was released on 2000 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Visible Spectroscopic Imaging on the Alcator C Mod Tokamak written by Christopher James Boswell and published by . This book was released on 2003 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) 3) Two-dimensional emissivity profiles of visible continuum (420-430nm) have been measured and found to be an order of magnitude too large when compared to expected levels from electron-ion bremsstrahlung and radiative recombination. Several atomic and molecular processes have been considered to explain the enhanced continuum. However, none of the considered processes could explain the continuum level without particle densities inconsistent with current modeling efforts. The visible imaging system was also used in identifying the causes of impurity injections during discharges, in identifying the failure of invessel components, and as a monitor of vessel and plasma conditions. Both the physics results and the operational benefits of the visible imaging system show that the system is a valuable quantitative and qualitative diagnostic.
Download or read book Edge Plasma Phenomena in the Alcator C Mod Tokamak Measured by High Resolution X ray Imaging Diagnostics written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: By Thomas Sunn Pedersen.
Download or read book Doppler Measurements in the Edge of the Alcator C Mod Tokamak Using a High resolution Visible Spectrometer written by Alexander Turner Graf and published by . This book was released on 2008 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Particle Transport on the Alcator C Mod Tokamak written by Cindy R. Christensen and published by . This book was released on 1999 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phase Contrast Imaging on the Alcator C Mod Tokamak written by Alexander Mazurenko and published by . This book was released on 2001 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phase Contrast Imaging (PCI) is a new diagnostic that was built for the Alcator C-Mod tokamak. It measures line-integrated (along 12 vertical chords) plasma density perturbations with good temporal (2-500 kHz) and wavenumber (0.5-12 /cm) resolution. The Quasi-Coherent (QC) fluctuation mode was studied using the PCI and other diagnostics. The mode was found to cause fluctuation of density, electric and magnetic field in the plasma edge with typical frequency of 100 kHz and typical poloidal wavenumber of about 5/cm. The mode was found to be responsible for confinement properties of the "Enhanced D-alpha H-mode" (a particularly favorable regime of tokamak operation). Through numerical modeling, the physical origin of the fluctuations was tentatively identified as "resistive X-point" mode (a kind of resistive ballooning mode strongly affected by the X-point configuration of magnetic field lines). The PCI system has been upgraded to detect waves in the ion cyclotron range of frequencies (ICRF, 40-80 MHz) by means of optical heterodyning - a technique based on modulation of the diagnostic laser beam near the wave frequency. The upgraded system was then used to study propagation of the Fast Magnetosonic Waves. These waves, which have never been measured in detail in past experiments, are being used to heat the tokamak plasma at the megawatt power level. The measured results were compared to the simple cold-plasma dispersion relation and to predictions of the full-wave 3D numerical modeling.
Download or read book High Resolution Bolometry on the Alcator C Mod Tokamak written by Réjean Louis Boivin and published by . This book was released on 1998 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Visible Continuum Measurements on the Alcator C Tokamak written by M. E. Foord and published by . This book was released on 1986 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The High Resolution Video Capture System on the Alcator C Mod Tokamak written by Aaron J. Allen and published by . This book was released on 1996 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Edge Turbulence Imaging in the Alcator C Mod Tokamak written by S. J. Zweben and published by . This book was released on 2001 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Charged Fusion Product Diagnostic on the Alcator C Mod Tokamak written by Daniel Hung Chee Lo and published by . This book was released on 1996 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diagnostic Systems on Alcator C Mod written by Nils Plesner Basse and published by . This book was released on 2005 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: An overview of the diagnostics installed on the Alcator C-Mod tokamak [I. H. HUTCHINSON et al., Phys. Plasmas, Vol. 1, p. 1511 (1994)] is presented. Approximately twenty-five diagnostic systems are being operated on C-Mod. The compact design of the machine and the cryostat enclosing the vacuum vessel and magnetic field coils make access challenging. Diagnostics are used to study four focus areas: Transport, plasma boundary, waves and macrostability. There is significant overlap between these topics and they all contribute towards the burning plasma and advanced tokamak thrusts. Several advanced and novel diagnostics contribute to the investigation of C-Mod plasmas, e.g. electron cyclotron emission, phase-contrast imaging, gas-puff imaging, probe measurements and active magnetohydrodynamic antennas.
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Resolution Edge Thomson Scattering Measurements of the Alcator C Mod Tokamak written by Jerry Wayne Hughes and published by . This book was released on 2000 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Edge Turbulence Imaging in the Alcator C Mod Tokamak written by S. J. Zweben and published by . This book was released on 2001 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Submillimeter Wave Electron Cyclotron Emission Diagnostic for the Alcator C Mod Tokamak written by Thomas C. Hsu and published by . This book was released on 1994 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diagnostic Neutral Beam and Active Spectroscopy Requirements for the Alcator C Mod Tokamak written by Earl S. Marmar and published by . This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
