MA15

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JSPWiki v2.0.52


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The superconducting magnet MA15 was acquired in 2004. It was paid partly by PSI, Risø, MaNEP and SNF. 14.9 Tesla is the maximum field achievable with nowadays technology for a split pair coil (which is needed for wide angle access). This limit could in principle be increased to 17.5 by means of a dysprosium insert for small samples. This option is not (yet) available at SINQ.

Specifications

field at sample 14.9 Tesla
" without lambda stage13.5 Tesla
diameter of sample space20 mm
max. useable sample height20 mm
split access angle+- 2 deg
sample height for +-2 deg access(visible by neutrons) 14 mm
horizontal access angle> 330 deg
homogeneity over a 10 mm diameter sphere0.5%
distance from base of cryostat
to scattering plane		240 mm
operating current for 14.9 T120 A
maximum allowed vertical and horiontal magnetic forces1000 N
total weight including cryogens650+-30 kg
field stability in persistent mode0.01 % / hour
total radial aluminium window thickness43.4 mm
total radial aluminium in entrance window8.6 mm
entrance window size (radiussed corners 3 mm)15 x 15 mm
useable LHe capacity55 l
LHe boil off (static mode)<350 cc/hr
LN2 capacity60 l
typical LN2 boil off600 cc/hr
diameter for transfer tube12 mm
temperature range (no field dependend limitations)1.6 ... 300 K
temperature stability+- 0.1 K
automatic needle valve control only above3 K
exchange gas needed in sample space (measured at RT)<15 mbar
sample space diameter above magnet49.5 mm

Attachments:  ma15c.jpg  ma15b.jpg  ma15d.jpg  ma15a.jpg 
This particular version was published on 26-Jan-2005 09:39:45 UTC by MarkusZolliker.