@inproceedings{ba60250f72de49d3bedbeda17e3ac612,
title = "Optimization of a two stage pulse tube refrigerator for the integrated current lead system",
abstract = "Implementation of a conventional current lead with a pulse tube refrigerator has been validated to be working as an Integrated Current Lead (ICL) system for the Superconducting Magnetic Energy Storage (SMES). Realization of the system is primarily accounted for the flexibility of a pulse tube refrigerator, which does not posses any mechanical piston and/or displacer. As for an ultimate version of the ICL system, a High Temperature Superconducting (HTS) lead links a superconducting coil with a conventional copper lead. To ensure the minimization of heat loads to the superconducting coil, a pulse tube refrigerator has been upgraded to have a second cooling stage. This arrangement reduces not only the heat loads to the superconducting coil but also the operating cost for a SMES system. A prototype two-stage pulse tube refrigerator, series connected arrangement, was designed and fabricated to satisfy the requirements for the ICL system. Operation of the first stage refrigerator is a four-valve mode, while the second stage utilizes a double inlet configuration to ensure its confined geometry. The paper discusses the optimization of second stage cooling to validate the conceptual design.",
keywords = "Cryocooler, Current lead, Pulse tube",
author = "R. Maekawa and Y. Matsubara and A. Okada and S. Takami and M. Konno and A. Tomioka and T. Imayoshi and H. Hayashi and T. Mito",
year = "2008",
doi = "10.1063/1.2908449",
language = "English",
isbn = "9780735405042",
series = "AIP Conference Proceedings",
pages = "101--108",
booktitle = "Advances in Cryogenic Engineering - Transactions of the Cryogenic Engineering Conference - CEC",
note = "Transactions of the Cryogenic Engineering Conference, CEC 2007 ; Conference date: 16-07-2007 Through 20-07-2007",
}