| Autor: |
Brink, P. L., Saab, T., Miller, A. J., Young, B. A., Akerib, D. S., Cabrera, B., Castle, J. P., Chang, C., Discroll, D., Emes, J. H., Gaitskell, R. J., Kamat, S., Mandic, V., Meunier, P., Perera, T. A., Rau, W., Sadoulet, B., Seitz, D. N., Schnee, R. W., Wang, G. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2002, Vol. 605 Issue 1, p529, 4p |
| Abstrakt: |
The ZIP detectors deployed in the CDMS II experiment utilize phonon sensors comprising W Transition Edge Sensors (TESs). In order to ensure uniform collection of the athermal phonon signal the TESs are dispersed uniformly on one side of a 1 cm thick, 3 inch diameter, disk. Each quadrant contains 1036 TESs connected in parallel to one series-array SQUID amplifier. The initial superconducting transition temperatures of these TESs tend to be too high for our requirements, and substantial gradients make the operation of the detectors difficult. Hence our implementation of Fe-56 ion implantation, as reported at the previous LTD meeting, to reduce in a controlled manner the transition temperature. However, the successful implementation of this ion-implantation scheme requires accurate knowledge of the initial transition temperature of each TES in a given quadrant. We report on our approaches and techniques employed to address the issue of determining the initial Tc distribution. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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