Diff: MA15

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JSPWiki v2.0.52


Difference between version 5 and version 4:
At line 7 added 3 lines.
+ A rotatable sample stick has been made at PSI using a similar design at the
+ ILL. This allows to leave the magnet in a fixed omega position and to
+ turn the sample orientation within the magnet.
At line 8 added 3 lines.
+ At present, MA15 can only be used on RITA2. However, some
+ [Restrictions|MA15RitaRestrictions] have to be obeyed.
+
Line 13 was replaced by lines 19-27
- !Actual Problems
+ !Hanging Issues
+
+ * The automatic needle vavle control does not work properly. It seems that this
+ is a mechanical problem of the cold valve. The Magnet has to be sent back to
+ Oxford Instruments.
+
+ * The rotatable sample stick has a relatively bad thermal contact. Therefore the
+ minimal sample temperature is increased. It is not sure if putting more
+ exchange gas can elimate this problem.
At line 14 added 6 lines.
+ * In order to be used possibly on other instruments, the instruments have to be
+ checked for magnetic materials around the sample table. After some force
+ tests, and after eventual modifications of the instrument, the conditions
+ for a safe operations have to be defined. The next candidate for these
+ tests is TASP.
+

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