Presentation Abstract

Presentation Number: 3EP3G-01
Poster Board Number: 127
Title: Magnetic field provision for milliKelvin experimental environments incorporating an ultra-high vacuum capability
Presentation Time: Wednesday, Aug 04, 2010, 7:30 PM - 9:30 PM
Authors: A. Twin, H. Agrawal, G. Batey, J. Burgoyne, J. Brown, M. Cuthbert, T. Foster, H. Jones, S. Kingsley, C. King, A. J. Matthews, R. Morris, G. Teleberg, K. Timms;
Oxford Instruments Nanoscience.
Keyword: ++E6.2 Novel Devices and Instruments
Abstract: The provision of ultra-low temperature and magnetic field environments for electronic research applications was for many years achieved by means of liquid helium filled cryostats and inserts that required a high level of expertise to both set up and maintain. Developments in cryogen free technology have now enabled superconducting magnets and dilution refrigerators to be cooled on a single pulse tube refrigerator. This gives the experimentalist unparalleled ease of access to full B-T environments. The functionality and detailed performance of both low field (NbTi) and high field (Nb3Sn) magnets integrated onto dilution refrigerators are described.
Recently, pulse tubes with ultra-high vacuum compatibility have become available. This has widened the application of cryogen free refrigeration technology into the low pressure regime. To further extend the experimental environments available to the researcher, large liquid cryogen magnet systems have recently been built with ultra-high vacuum compatible low temperature inserts. The design and full functionality of these leading edge systems are described in some detail.