| Lines 2-6 were replaced by lines 2-7 |
| - 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. |
| + partly by |
| + * [PSI|http://www.psi.ch] |
| + * the [Carlsberg Foundation|http://www.carlsbergfondet.dk/] |
| + and the Danish National Science Foundation (danish: [FNU|http://www.forsk.dk]) |
| + * [MaNEP|http://www.manep.ch] |
| + * [SNF|http://www.snf.ch] |
| At line 7 added 1 line. |
| + [ma15d.jpg] |
| Line 9 was replaced by lines 11-14 |
| - [Specifications|MA15Specifications] |
| + 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. |
| At line 10 added 22 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. |
| + |
| + !Restrictions |
| + |
| + __after several quenches, operation above 12.5 without lambda stage is not recommended [see|http://samenv:8080/sample_environment/61]__ |
| + |
| + Due to force limits, restrictions are defined for the use of MA15. |
| + ||Instrument ||Allowed Max. Field [[Tesla] |
| + |RITA-2 |11.5 ... 14.9, see [MA15 Rita Restrictions] |
| + |TASP |14.9, see [MA15 TASP Restrictions] |
| + |EIGER |13, see [MA15 Eiger Restrictions] |
| + |ZEBRA |14.9 for the longer distance as defined for MA15 |
| + On all other instruments, MA15 can not yet be used. |
| + |
| + [Specifications / Ramp Limits|MA15Specifications] |
| + |
| + More information on intranet page (Drawing): [LdmWiki:MA15] |
| + |
| + [Omega Motor Change on Rita2] |
| + |
| Line 13 was replaced by lines 40-59 |
| - !Actual Problems |
| + !Pending Issues |
| + |
| + * The automatic needle valve does not always work properly. |
| + A mechanical problem was solved by Oxford Instruments. |
| + It is still a problem that sometimes the needle valve bar |
| + gets frozen. This problem might be avoided when keeping warm |
| + the top of the needle valve during fill. However, at high |
| + fields, the air dryer might not work! |
| + |
| + * The nitrogen level gauge does not work. This has to be fixed, but |
| + it seems that it may appear often. |
| + |
| + * During He-fill, LN2 has to be filled again in order to avoid |
| + air sucking into the LN2 dewar. |
| + |
| + * 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. |
| At line 14 added 3 lines. |
| + [ma15b.jpg] |
| + [ma15a.jpg] |
| + [ma15c.jpg] |
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