MA09

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MagnetList
Spacerlist
Efield
EarlierProgress
TemperatureSensors

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JSPWiki v2.0.52


This is version 33. It is not the current version, and thus it cannot be edited.
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Specifications

MA09 Detailed Manual

Temperature Sensors

  • 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[1]: > 22 cm
Rita-II 4 Tesla with goniometer, goniometer motors removed
DMC 1.4 Tesla
HRPT 4 Tesla without RC shielding
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

[1] on TASP: MA09/taspFilterMA09.png

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 10-Oct-2008 09:20:37 UTC by MarkusZolliker.