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Galleries: NMR Room - Page 2 - Magnet

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On June 25, 2001, the Oxford 400 MHz widebore magnet and a pile of accessories from Varian arrived at the University of Windsor.  dscf0016.jpg (269861 bytes)

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Most of the equipment can be seen in various states of packing and unpacking in these photos.
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The magnet crate was unpacked in the newly renovated NMR room (the electrical work can be seen on the right wall)

Here are some shots of the unpacking of the magnet.  Ivan poses next to the crate prior to unpacking.dscf0019.jpg (269339 bytes)

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The magnet patiently sits on it pallet, waiting for cryogens

Here are some unusual shots down the bore of the magnet - difficult to do this when the magnet is at fielddscf0025.jpg (267047 bytes) dscf0026.jpg (267038 bytes)

The bore is 89 mm in diameter, and runs down the centre of the magnet.  The sample probes are placed in the centre of the magnet through the bore.

The magnet installation took place during the week of July 9-13

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The next shots show the magnet being lifted (it weighs 1259 lbs) onto its legs by a crane called "the blue goose"

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Here Ian Davies (from Oxford) and Mike Fuerth, our NMR technician, begin the precarious hoisting of the magnet.


Here, we all watch intently as the magnet is directed towards its legsdscf0029.jpg (261471 bytes)

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The magnet is placed upon it legs...

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which are then quickly attached to the bottom of the magnet

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Then, the inner vacuum chambers of the magnet are pumped down overnight, so that the cryogen fills can begin the next day

On Day 2, Ian begins cooling the magnet with liquid nitrogen (LN2)

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LN2 is about 77 K or -195.8 C

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Day 3: Once the initial LN2 cooling is complete, liquid helium (4 K, or -269 C) is added - this creates the temperature conditions for superconductivity


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Two 500 litre tanks of LN2 were used for this installation - the regular addition of LN2 keeps the liquid He from boiling off

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Ian uses this little unit to adjust the shims of the magnet

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Here the magnet sits after most of the filling is done

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The magnet, ready to go

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