| Line 1 was replaced by lines 1-27 |
| - HEOX is a |
| + !Oxford Intruments 3He Sorption Cryostat |
| + |
| + HEOX is a 3He cryostat with a sorption 3He pump. All gas handling is |
| + inside the cryostat, there are therefore no tubes to a pump outside. |
| + |
| + After putting into operation, some questions are still open: |
| + |
| + * The sample space has a diameter of about 40 mm. Around this tube, |
| + there is 4.5 mm liquid helium. This may produce background, |
| + especially on inelastic measurements. |
| + |
| + * In principle, it should be possible to combine the 3He insert with |
| + the MA09 cryomagnet. It is not yet clear, if it really works, and |
| + there will also be the problem with the LHe background. |
| + |
| + * For powders, it is not clear if the thermal contact inside the |
| + sample container is good enough to ensure the expected sample |
| + temperature. |
| + |
| + ''Some test results'' |
| + |
| + Hold times: |
| + |
| + !0.33 K|22h |
| + !0.5 K|25h |
| + !0.7 K|32h |
| + |
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