21-25 July 2019
Connecticut Convention Center, Level 6
US/Eastern timezone

C3Or2A-07: Design of re-condensing cryostats for long term use in magnet beamline applications

24 Jul 2019, 15:30
Level 6, Room 26-27

Level 6, Room 26-27

Contributed Oral Presentation C3Or2A - Superconducting Magnet Systems III


Mr Neil Clarke (Oxford Instruments Nanoscience)


With the advent of high-power pulse tube refrigerators cryogen free research tools providing mK temperatures and moderate applied magnetic fields have become commonplace. For large scale applications, complex and ultra-high field superconducting magnets liquid helium reservoirs remain a well-considered design option. Truly zero loss, re-condensing cryostats for such large-scale applications are also now possible. Through improved understanding of system cryogenics, magnet design and system peripherals such systems have been demonstrated to show spare capacity for additional heatloads such as continuous sweeping, superconducting switches and high current capacity leads. Furthermore, full re-condensation of helium flow through cryogenic inserts can be achieved, with experimental temperature ranges extended below 100 mK in continuous operation.

This paper will identify the benefits of re-condensing designs and present data on a variety of design configurations and performance. Techniques for optimizing their use and efficiency for various experimental regimes of magnetic field and temperature will also be described.

Primary authors

Mr Neil Clarke (Oxford Instruments Nanoscience) Dr Wenbin Ma (Oxford Instruments Nanoscience) Mr Daniel Strange (Oxford Instruments Nanoscience) Dr Roman Viznichenko (Oxford Instruments Nanoscience) Mr David Warren (Oxford Instruments Nanoscience)

Presentation materials