Search for dissertations about: "tokamak neutron emission"

Showing result 1 - 5 of 12 swedish dissertations containing the words tokamak neutron emission.

2. 1. Modelling and Measurements of MAST Neutron Emission

   Author : Iwona Klimek; Marco Cecconello; Jozef Ongena; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; fusion; plasma diagnostics; neutron emissivity and rate; Neutron Camera; tokamak; MAST; Fysik med inriktning mot tillämpad kärnfysik; Physics with specialization in Applied Nuclear Physics;

   Abstract : Measurements of neutron emission from a fusion plasma can provide a wealth of information on the underlying temporal, spatial and energy distributions of reacting ions and how they are affected by a wide range of magneto-hydro-dynamic (MHD) instabilities.This thesis focuses on the interpretation of the experimental measurements recorded by neutron flux monitors with and without spectroscopic capabilities installed on the Mega Ampere Spherical Tokamak (MAST). READ MORE

4. 2. Neutron Emission Spectrometry for Fusion Reactor Diagnosis : Method Development and Data Analysis

   Author : Jacob Eriksson; Göran Ericsson; Carl Hellesen; Sean Conroy; Andreas Dinklage; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; fusion; plasma diagnostics; neutron spectrometry; TOFOR; MPRu; tokamak; JET; fast ions; fuel ion density; relativistic kinematics; Fysik med inriktning mot tillämpad kärnfysik; Physics with specialization in Applied Nuclear Physics;

   Abstract : It is possible to obtain information about various properties of the fuel ions deuterium (D) and tritium (T) in a fusion plasma by measuring the neutron emission from the plasma. Neutrons are produced in fusion reactions between the fuel ions, which means that the intensity and energy spectrum of the emitted neutrons are related to the densities and velocity distributions of these ions. READ MORE

5. 3. Making TOFu : Fusion Plasma Neutron Emission Spectrometry with a Fully Digital Data Acquisition System

   Author : Mateusz Skiba; Göran Ericsson; Anders Hjalmarsson; Carl Hellesen; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; fusion; plasma diagnostics; neutron spectrometry; TOFOR; tokamak; JET; digital data acquisition; Fysik med inriktning mot tillämpad kärnfysik; Physics with specialization in Applied Nuclear Physics;

   Abstract : TOFu (Time-Of-Flight upgrade) is a fully digital data acquisition system based on 1 GSPS, 12 bit digitisers for the TOFOR (Time-Of-Flight spectrometer Optimised for Rate) fusion neutron spectrometer at JET. The system has been assessed, developed and subsequently tested during experimental campaigns at JET. READ MORE

6. 4. Multi-sightline neutron emission spectroscopy of D and T fusion plasmas at JET

   Author : Arne Sahlberg; Jacob Eriksson; Sean Conroy; Göran Ericsson; Manuel Garcia-Muñoz; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; fusion; tokamak; neutron spectroscopy; fusion plasma diagnostics; data analysis; fast ion distribution; Fysik; Physics;

   Abstract : An analysis of the neutron emission from a fusion plasma can be used to determine plasma properties and diagnose fusion performance. In this thesis, several analysis methods for neutron spectroscopy are presented and applied to data from the experimental fusion device JET. READ MORE

7. 5. Neutron Spectrometry Techniques for Fusion Plasmas : Instrumentation and Performance

   Author : Erik Andersson Sundén; Göran Ericsson; Sean Conroy; Erik Traneus; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; fusion; plasma diagnostics; neutron spectrometry; neutron spectroscopy; MPRu; magnetic proton recoil spectrometer; fusion; ITER; Nuclear physics; Kärnfysik; Fysik med inriktning mot tillämpad kärnfysik; Physics with specialization in Applied Nuclear Physics;

   Abstract : Neutron are emitted from a deuterium plasma with energies around 2.5 MeV. The neutron spectrum is intimately related to the ion velocity distribution of the plasma. As a consequence, the analysis of neutron energy spectra can give information of the plasma rotation, the ion temperature, heating efficiency and fusion power. READ MORE