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This is version 30.
It is not the current version, and thus it cannot be edited.
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Specifications
MA09 Detailed Manual
- on sample stick: x22642
- on VTI heat exchanger: c17844
- common, very rough calibration for all Allen-Bradley test sensors:
cplus70
Restrictions
| Instrument | Field Limit | Comment |
|---|
| TASP | 6 Tesla | with goniometer, goniometer motors removed, distance to Be filter: > 20 cm |
| TASP | 9 Tesla | without goniometer unit, monochromator 2theta > 75, distance to Be filter: > 24 cm |
| Rita-II | 4 Tesla | with goniometer, goniometer motors removed |
| DMC | 1.4 Tesla | |
| HRPT | ?? | force measurements to be redone |
| FOCUS | 9 Tesla | magnetic rail and motor of radial collimator removed
distance magnet center to mono center 2 m, 2theta < 132 deg or magnet surface to guide surface > 0.9 m |
| TriCS | 4 Tesla | |
| Morpheus | 3.5 Tesla | with X-Y table, dist. to diaphragmas at least 250 mm, omega motor not in use |
| Morpheus | 2 Tesla | with omega motor |
Pending Issues
- The magnet seems not to work reliably with the lambda stage
(2 quenches during an expt. in November 2006). The reason is not
yet clear. A user claimed that the switch heater power is too low
when using the lambda stage. It seems that this is not the case
(see MA09switchHeater).
A test in February 2007 showed no quench up to 9 Tesla. However,
if we extrapolate the force measurements at 5 Tesla, we get forces
near 1000 kN both vertically and horizontally (with shortened distance
sample - mono). At normal distance, the horizontal forces are much lower,
and the vertical forces should be reduced after replacing the A3 motor box.
- The magnet has a cold leak, occuring only occasionaly at low temperatures.
As a workaround the main vacuum has to be pumped constantly. (Oct 2006)
Solved issues
- There seem to be a problem with the He level gauge. As a workaround, an
additional gauge is placed in the He filling port. (2005-10-19)
Solved in winter 2006.
Attachments:
ma09b.jpg
taspMa9_1.jpg
ma09b.JPG
RCshielding.jpg
ma09a.jpg
RCmotor.jpg
ma09c.JPG
taspMa9_2.jpg
taspFilterMA09.png
This particular version was published on 26-Jun-2008 12:40:19 UTC by MarkusZolliker.
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