Author: A. CôtéPublisher:
ISBN:
Category :
Languages : en
Pages : 6
Book Description
Thomson Scattering Diagnostic for the TdeV Tokamak
Author: A. CôtéFirst Fifty Pps Thomson Scattering Diagnostics in a Tokamak
Author: Kurt HirschThomson Scattering Diagnostic for the Microwave Tokamak Expe
Author: J. FooteAn Instrument to Sychronize Thomson Scattering Diagnostic Measurements with MHD Activity in a Tokamak
Author: Alan L. WintenbergPublisher:
ISBN:
Category : Tokamaks
Languages : en
Pages : 254
Book Description
First fifty pps Thomson scattering diagnostics in a tokamak
Author: Institut für PlasmaforschungPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
An Instrument to Synchronize Thomson Scattering Diagnostic Measurements with MHD Activity in a Tokamak
Author: Alan L. WintenbergThe Multipulse Thomson Scattering Diagnostic on the DIII-D Tokamak
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
This paper describes the design and operation of a 40-spatial channel Thomson scattering system that uses multiple 20 Hz Nd:YAG lasers to measure the electron temperature and density profiles periodically throughout an entire plasma discharge. Interference filter polychromators disperse the scattered light which is detected by silicon avalanche photodiodes. The measurable temperature range from 10 eV to 20 keV and the minimum detectable density is about 2 x 1018 m−3. Laser control and data acquisition are performed in real-time by a VME-based microcomputer. Data analysis is performed by a MicroVAX 3400. Unique features of this system include burst mode'' operation, where multiple lasers are fired in rapid succession (
Design of a Thomson scattering diagnostic for TEXT upgrade
Author: Vicki Renee FarmerPublisher:
ISBN:
Category : Thomson scattering
Languages : en
Pages : 108
Book Description
Collective Thomson Scattering Energetic Particle Diagnostic in High Performance Tokamaks. Final Report
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 36
Book Description
This report summarizes the work performed under DOE grant DE-FG03-95ER54334. Lodestar was an active participant in the low power Collective Thomson Scattering (CTS) diagnostic experiment at TFTR in collaboration with MIT. A simple and effective fitting technique was developed to extract key parameters from the scattered data. Utilizing this new technique, the concept of lower hybrid resonance scattering was adapted for a feasibility study of a low/medium power collective scattering diagnostic for ITER. The implementation and the testing of such a technique for actual parameter extraction using TFTR data, however, was severely limited due to experimental and instrumentation complications. Based on the studies the authors have performed up to date, it is believed that a combination of non-physics related effects such as multiple wall reflection of incident signal and spectral impurity problem o the gyrotron can account for the anomalous signal strength. A collaborative effort with GA was initiated and a feasibility study of developing and implementing a collective thomson scattering (CTS) diagnostic for the detection of energetic particles at DIII-D was completed. Specifically, the process of selecting an optimum receiver location for the diagnostic is discussed in detailed. Results presented here include detailed signal to noise calculations and ray-tracing studies. Critical physics issues and selection criteria are discussed and a procedure to detect anisotropic energetic ion temperatures is also outlined. Favorable results, obtained in the feasibility study, indicate that it should be possible to develop and implement a CTS diagnostic at DIII-D.
Author: