| Title | Optimum sensitivity of an externally shielded cryogenic current comparator |
| Publication Type | Journal Article |
| Year of Publication | 1997 |
| Authors | Early, M.D., and Jones K. |
| Journal | IEEE Transactions on Instrumentation and Measurement |
| Volume | 46 |
| Issue | 2 |
| Pagination | 459 - 462 |
| Date Published | 1997 |
| ISSN | 00189456 (ISSN) |
| Keywords | Comparator circuits, Cryogenics, Electric coils, Electric currents, Electric network analysis, Equivalent circuits, MATHEMATICAL MODELS, Network components, Optimization, Overlapped tube cryogenic current comparator (CCC), Pick up coil, Sensitivity analysis |
| Abstract | The sensitivity of an overlapped-tube cryogenic current comparator (CCC) has been calculated including the effect of a cylindrical external shield. Dimensions of the shield, tube and pick-up coil can be optimized to give maximum sensitivity. The sensitivity in the case of a fixed radius shield has been numerically investigated and a CCC based on an optimized design has been constructed. A single sensitivity measurement indicates that the cylindrical-shield model is accurate to within about 20% of the measured value. This is a significant improvement compared with a simplified ring model of the shield or neglecting the shield entirely. © 1997 IEEE. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-0031125292&partnerID=40&md5=dbc62d989033625b9627c37326eb2f47 |
| DOI | 10.1109/19.571884 |
