Abstract
It is acknowledged that measurements of dielectric constants in low loss materials are difficult in absolute terms and it is a common experience that measurements on the same material using different techniques may give different results. An intercomparison has been made, under the auspices of the IEA, between the measuring facilities of the various laboratories working on dielectrics for fusion reactors. MACOR was chosen as the test material having a moderate loss and being available in sufficient quantity at reasonable cost. A single block was purchased through the EEC, cut up and distributed to the laboratories at Harwell, KfK Karlsruhe, CIEMAT, JAERI and LANL/ORNL. Measurements of permittivity and loss tangent have been made over a frequency range of 1 kHz to 35 GHz and the results show an encouraging agreement between the various laboratories.
| Original language | English |
|---|---|
| Pages (from-to) | 535-538 |
| Number of pages | 4 |
| Journal | Journal of Nuclear Materials |
| Volume | 191-194 |
| DOIs | |
| State | Published - 1992 |
Funding
The authors are indebted to those in their respective laboratories who provided valuable assistance in the collection of the data. The work at Harwell formed part of the programme undertaken within the Euratom/UKAEA Contract of Association for fusion research and that at KfK Karlsruhe has been performed in the framework of the Nuclear Fusion Project and is supported by the European Communities within the European Fusion Technology Programme.
| Funders | Funder number |
|---|---|
| European Commission |
