SQUID Developments for the Gravitational Wave Antenna MiniGRAIL

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Pleikies, J. and Usenko, O. and Kuit, K.H. and Flokstra, J. and Waard, A. de and Frossati, G. (2007) SQUID Developments for the Gravitational Wave Antenna MiniGRAIL. IEEE Transactions on Applied Superconductivity, 17 (2, Par). pp. 764-767. ISSN 1051-8223

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Abstract:We designed two different sensor SQUIDs for the readout of the resonant mass gravitational wave detector MiniGRAIL. Both designs have integrated input inductors in the order of 1.5 muH and are planned for operation in the mK temperature range. Cooling fins were added to the shunt resistors. The fabricated SQUIDs show a behavior that differs from standard DC-SQUIDs. We were able to operate a design with a parallel configuration of washers at reasonable sensitivities. The flux noise saturated to a value of 0.84 muPhi0/radicHz below a temperature of 200 mK. The equivalent noise referred to the current through the input coil is 155 fA/radicHz and the energy resolution yields 62 h.
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Copyright:© 2007 IEEE
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/61501
Official URL:http://dx.doi.org/10.1109/TASC.2007.898067
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