This system is different from all of our other superconducting magnet systems, probably because it is far older than any other. Its age, however, speaks highly of this systems robustness and ease of use. Lacking a persistence switch, the magnet is simply always at the same current as the power supply. There are now three options for inserts: a 3He insert (bottom loading), a CT dewar insert (bottom loading) and a top loading CCR insert . See below for their specifications.
Note: 3He Insert is currently our of service...(3/3/08)

Magnet Properties Max Field 7 T Current at 7 T 89.97 A Field Calibration 0.0778 T/Amp Magnet Resistance at 77K 80.4 ohms	Magnet Cool Down Info LN2 Pre-Cool Time 1 Hr. LHe Cool Time 1 Hr. LHe Consumption ~70 L.
Insert Comparison Insert Temp. Range Sample Space Atmosphere Prep. Time (to 4K in magnet) Sample Change (Time to 4K) Drawing TL-CCR 3.4 - 600K Helium Gas 6 hours 1 hour CT Dewar 4.2 - 300K Vacuum 3.5 hours 5 hours 3He Out of Service 300mK - 300K Vacuum (below 4K & above 20K) 2 hours 3 hours *Click Here for Sample Mounting Info*

More Information:

• Inserts

• Top Loading CCR Manual(pdf will open in new window)
• Prepping the CT Insert (pdf will open in new window)
• 3He Insert Manual(pdf will open in new window)



• Magnet

• 7T VF Magnet User Manual (pdf will open in new window)
• Prepping the 7T VF Magnet (pdf will open in new window)
• How to Fill Liquid Helium (pdf will open in new window)

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