Dear All,

 please find attached a photo of the first barrel toroid magnet of
 ATLAS being lowered into position in the cavern. The toroid weighs
 about 20 tons, and is the first of eight which will eventually
 provide the magnetic field for the ATLAS external muon
 spectrometer. The toroids are superconducting (22kA current) and will
 provide a 4 Tesla field.

 Given the limited diameter of the access shaft, the toroid had to be
 lowered at an angle. Apparently the clearance between the toroid and
 the shaft wall was less than 10cm. In the photo, the tilted toroid
 can be seen emerging from the equipment access shaft.

 The operation was carried out yesterday and took most of the day.

 I have prepared a short photo sequence of the whole operation. You
 can find it at:

 http://www.pp.rhul.ac.uk/~ptd/bt1.html

 Enjoy,

 - Pedro.