MA7

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6.8 Tesla Horizontal Field Cryomagnet MA7

The horizontal high field cryomagnet has a restricted neutron access. There are 4 windows of 45 deg each, valid for a sample of 15 mm diameter.

MA7/MA7coils.png

For access with polarized neutrons, an asymmetric mode (max. 6.2 Tesla) is available. This is needed when a beam perpendicular to the field is used.

This cryomagnet has strong stray fields due to the size of its coils. Before it may be used on any instrument, force tests have to be done. The specifications allow forces up to 1000 N vertically and 500 N horizontally.

MA7 Restrictions

MA7/MA7pict.jpg

Asymetric mode

For changing for symmetric mode to asymmetric and vice versa:

  • change a cable on the top of the magnet under the aluminium cyclinder
  • change the configuration of the IPS, (Test 07):

Parameter Value for Sym Value for Asym
S02 (max. current) 96.636 100.657
S01 (max. field: second value) 6.8 6.2
S11 (coil inductance) 112 78.7

Attachments:  asysym.jpg  MA7pict.jpg  MA7coils.png  P3010088.JPG 
This particular version was published on 09-Jun-2011 09:31:02 UTC by MarkusZolliker.