Integrated Cryogen free dilution refrigerator and magnet system

Integrated dilution refrigerator and magnet Cryogen-free system

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integrated-cryogen-free-dilution-refrigerator-and-magnet-system

Award winning product: This product won the 2010 Queen's award in the category Enterprise:Innovation
Fully integrated Cryofree magnets with a wide range of vector rotate, up to 16 T solenoids
Base temperature: ≤ 7 mK expected
up to 16 T superconducting magnet central field
Cooling power ≥ 200 or 400 µW at 100 mK
Magnet ramps from zero to 15 T in less than 30 minutes
Modular design with interchangeable inserts: dilution refrigerator, 3He system, VTI f or maximum flexibility
Automatic control of the dilution refrigerator from RT to base temperature
One single Pulse Tube Cooler with vibration isolation at 4 K and 70 K
Easy and reliable sample access : via only one O ring sealed vacuum space, no IVC
Load-lock mechanism for fast sample change
Split shields to allow full sample region access

Oxford instruments published an article in Cryogenics on the integration of superconducting magnets with cryogen-free dilution refrigerator systems.

Download the article here >>

Typical specifications
Sample configuration
Photos

Dilution refrigerator specifications
Base temperature	≤ 10 mK
Temperature control of sample	up to 30 K with magnet at full field
Cooling power	> 200 or 400 µW at 100 mK
Cool down time ( from RT to 100 mK)	30 hours for 12 T magnet 50 hours for 15 T magnet
Sample change time using vacuum load-lock sample holder	≤ 8 hours for sample turnaround and cooling back to 100 mK
Magnet specifications
Field orientation	Vertical
Central field	up to 15 T in dilution refrigerator
Central field homogeneity	0.1 % over a 10 mm diameter spherical volume
Field stability in the persistent mode	Typically < 0.01 % relative hr-1 measured at 15 T
Cold bore diameter	57 mm clear
Wiring options
24 way constantan/copper/supercon loom 4, 8, 12 off S1 or UT85 coax 3, 6, 10, 20 dB attenuators fitted at PT1, PT2 and Still temperatures Custom wiring available

Low temperature insert	Low vibration Pulse Tube Refrigerator and compressor Independent precool loop Kelvinox dilution unit 2 x NW40 Line of site ports 1 x NW50 Line of site port 240 mm diameter x 240 mm length sample space Diagnostic thermometry Plain tail
Gas Handling system	Fully automatic gas handling Software control Turbo pump Dry rotary pump Condensing line compressor Electrical isolation
Superconducting magnet	3 T, 77 mm cold bore 8 T, 57 mm cold bore 12 T, 57 mm cold bore 15 T, 57 mm cold bore 0.1% homogeneity over 10 mm DSV Superconducting switch available Quench protection circuit HTS current leads Vector rotate magnets available on request
Optional items	1W Pulse Tube Refrigerator Remote rotary valve Remote pumping station LN2 precool loop Optical tails X-Ray or Neutron tails Tails to suit room temperature bore magnet system DC & RF customer wiring RF heat sinking Sample thermometry