Lines 5-7 were replaced by lines 5-7 |
- risk of problems, especially at the beginning of an experiment. In order to |
- minimize beam time losses due to ... 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 to be established: |
Lines 9-16 were replaced by lines 9-10 |
- ''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'' |
+ * The experiments must start on a working day, early in the morning. |
Lines 19-23 were replaced by lines 13-17 |
- ''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. |
+ ''Dilution refrigerator experiments'' |
+ * Sample changes must be planned on working days |
+ * Experiments should not start on Fridays or at a day before a holiday. |
+ If a beam block begins at such a day, the mounting and cooldown of the |
+ dilution refrigerator should be planned for the day before. |
Lines 25-26 were replaced by line 19 |
- for the case where the stick is already used immediately before. In this |
- case the rules for sample changes apply. |
+ for the case where the stick is already used immediately before. |
Lines 28-38 were replaced by lines 21-24 |
- 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 the number |
- of dilution experiments by the number of SINQ beam days divided by 7. |
- This limit is based on an average experiment length of less than 6 days, |
- and will allow to establish a schedule, where most of the time only |
- one dilution refrigerator is running at a time. |
+ sample must start early in the morning. |
+ * The number of dilution refrigerator experiments is limited. Experiments |
+ during internal beam time have to be approved by Joël Mesot (scientific |
+ relevance for LNS) and by Markus Zolliker (availability). |