| Line 1 was replaced by line 1 |
| - !Draft: Rules concerning Superconducting Magnets and Dilution Refrigerator Experiments |
| + !Rules concerning Superconducting Magnets and Dilution Refrigerator Experiments |
| Removed lines 3-4 |
| - |
| - |
| Lines 7-8 were replaced by lines 5-7 |
| - risk of problems, especially at the beginning of an experiment. We therefore |
| - suggest to implement rules for this type of experiments. |
| + risk of problems, especially at the beginning of an experiment. In the evening |
| + and on weekends, there is only very limited technical support. In order to |
| + minimize beam time losses, some rules have been established: |
| Lines 10-17 were replaced by line 9 |
| - ''Restrictions concerning magnets and/or dilution refrigerator experiments'' |
| - * On weekends or holidays, is not possible to start magnet or dilution |
| - refrigerator experiments |
| - * Support during weekend or in the evening may not be provided (there is no |
| - sample environment stand-by). If problems occur, it should be tried to |
| - contact the sample environment staff, but not during the night |
| - (10 p.m. - 8 a.m.). In the case that the contact can not be established, |
| - the experiment might have to be suspended until the next working day. |
| + ''Experiments with superconducting magnets and/or dilution refrigerator experiments'' |
| Lines 20-27 were replaced by lines 12-16 |
| - ''Restrictions concerning dilution refrigerator experiments'' |
| - * On weekends or holidays, sample changes are not possible |
| - * Experiments starting on Fridays (or at a day before a holiday) are only |
| - allowed at the beginning of a beam block, i.e. when the refrigerator |
| - can already be mounted on the instrument the day before. |
| - * The sample must be ready a workday before starting the experiment, except |
| - for the case where the stick is already used immediately before. In this |
| - case the rules for sample changes apply. |
| + ''Dilution refrigerator experiments'' |
| + * Sample changes must be done on working days |
| + * The sample must in general be ready (put on/into a suitable holder) |
| + in the morning of a workday before starting |
| + the experiment, except when the stick is already used immediately before. |
| Lines 29-36 were replaced by line 18 |
| - sample must start before 8 a.m. Be aware that a delay of a working day |
| - may occur after a sample change. |
| - |
| - ''Dilution Scheduling Policy'' |
| - |
| - Since we have 2 dilution sticks, the number of experiments with this type |
| - of equipment has raised severely. We suggest to implement a limit of |
| - 13 dilution experiments for a 4 month cycle. |
| + sample must start early in the morning. |
| Lines 38-41 were replaced by lines 20-21 |
| - The following table shows the situation for the last and for the next cycle. |
| - With such a high number of experiments, it is unavoidable to have periods, |
| - where 2 dilution refrigerators run at the same time. This is an highly |
| - undesirable situation. |
| + See also [Scheduling Policy for Superconducting Magnets and Dilution Refrigerators|MagnetDilutionSchedulingPolicy] (intended mainly for |
| + instrument responsibles) |
| Removed lines 43-52 |
| - |Period | Aug-Dez 2006 |Apr-Aug 2007 |
| - |SINQ beam days |95 |93 |
| - |total dilution usage [[days] |88 |96 |
| - |dil1 & dil2 running simultanously [[days] |15 |35 |
| - |number of dilution expts. |15 |17 |
| - |
| - As the schedule for the next period is already done, we try to handle |
| - the large number of experiments as well as possible. But for the next |
| - cycle (Sept-Dec 2007) we want to agree about a scheduling policy. This |
| - should ideally be done before the proposal deadline in May. |
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