Related Experiment Video
Updated: Jun 27, 2026

Structural Design and Manufacturing of a Cruiser Class Solar Vehicle
Published on: January 30, 2019
Validation of the ITER CXRS design by tests on TEXTOR
R J E Jaspers1, M G von Hellermann, E Delabie
1FOM-Rijnhuizen, EURATOM-FOM, The Netherlands and Partner of the Trilateral Euregio Cluster, P. O. Box 1207, Nieuwegein 3430 BE, The Netherlands. r.j.e.jaspers@rijnhuizen.nl
Abstract:
The charge exchange recombination spectroscopy system (CXRS) for ITER is designed to measure the core helium concentration, and in addition, profiles of ion temperature and rotation. This highly demanding task, due to the huge background radiation (bremsstrahlung) and the high attenuation of the dedicated diagnostic neutral beam, requires high throughput spectrometers with high resolution. On TEXTOR, a CXRS system has been developed with the aim to test the physics implications of these specifications. (i) A relevant spectrometer has been tested. (ii) A method to determine the helium concentrations from the CXRS intensity, using the beam emission has been evaluated. A 20% discrepancy in beam emission was revealed. (iii) The determination of the magnetic pitch angle by the ratio of Balmer lines showed qualitatively the right behavior, although the accuracy was limited by the polarization sensitivity of the first mirror. (iv) The simulation code developed for the prediction of the CXRS spectra was quantitatively confronted with experimental data.
Related Concept Videos
Otto and Diesel Cycle
Design Example: Automobile Ignition System
One can generate a large voltage using a car battery of 12 volts with the help of inductors. Inductors are known for opposing rapid...
Rolling Resistance: Problem Solving
Design of Transmission Shafts
Comparison Tests
Test for Homogeneity
