SUPERCONDUCTIVITY - PART 2: CRITICAL CURRENT MEASUREMENT - DC CRITICAL CURRENT OF NB[3]SN COMPOSITE SUPERCONDUCTORS
International Electrotechnical Committee
FOREWORD<br>INTRODUCTION<br>1 Scope<br>2 Normative references <br>3 Terms and definitions<br>4 Principle <br>5 Requirements <br>6 Apparatus<br> 6.1 Reaction mandrel material <br> 6.2 Reaction mandrel construction<br> 6.3 Measurement mandrel material <br> 6.4 Measurement mandrel construction <br> 6.5 Measurement set up <br>7 Specimen preparation<br> 7.1 Specimen mounting for reaction heat treatment <br> 7.2 Reaction heat treatment <br> 7.3 Specimen mounting for measurement <br> 7.4 Specimen bonding<br>8 Measurement procedure<br>9 Precision and accuracy of the test method<br> 9.1 Critical current<br> 9.2 Temperature<br> 9.3 Magnetic field<br> 9.4 Specimen support structure<br> 9.5 Specimen protection <br>10 Calculation of results<br> 10.1 Critical current criteria<br> 10.2 n-value (optional calculation, refer to A.7.2) <br>11 Test report <br> 11.1 Identification of test specimen <br> 11.2 Report of I[c] values <br> 11.3 Report of test conditions<br>Annex A (informative) Additional information relating to <br> Clauses 1 to 10 <br>Annex B (informative) Strain effect of Nb[3]Sn conductors <br>Annex C (informative) Self-field effect <br>Annex D (normative) One-mandrel method <br>Bibliography
Covers a test method for the determination of the d.c. critical current of Nb[3]Sn composite superconductors which are fabricated by either the bronze process or the internal tin diffusion process and have a copper/non-copper ratio larger than 0,2.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 90 |
