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SampleEnvironment |
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This is version 37.
It is not the current version, and thus it cannot be edited. Sample environment at SINQ
StaffStephan Fischer, Walter Latscha (technicians)Ton Konter (magnets) Markus Zolliker (software, general aspects) Ben van den Brandt (group leader "Sample Environment and Polarized Targets")
Device ListsOn this page, there is some general information about sample environment. For details go to one of
The documentation of sample environment at SINQ may not be complete. Please write to MissingSamEnvDocumentation what you want to see here.
EquipmentThe broad range of research topics investigated at SINQ requires not only a large zoo of neutron scattering instruments but also a large collection of sample environment devices. At present, any temperature between 100 mK to 1400 K, any magnetic fields up to 9 T and any high pressure up to 30 kbar may be achieved. The PSI-Risø collaboration helped to complete the sample environment park in the direction to higher magnetic fields and very low temperatures for single crystals.
Closed Cycle RefrigeratorsFor temperatures between 4 K and 325 K, in general, closed cycle refrigerators are the best choice, as they are very easy to use. Our closed cycle refrigerators are mostly from CTI-Cryogenics, and from
APD Cryogenics.
The 4 K closed cycle machines are from
Sumitomo Heavy Industries.
The accuray of the temperature in a closed cycle machine (cold finger principle) is limited. See
CTI Test Report on a CTI.
For details see closed cycle refrigerators.
Helium CryostatsFor temperature down to 1.5 K, or if a precise temperature is required, helium cryostats should be used. The working horse is the ILL Orange cryostat, manufactured at AS Scientific Products Ltd.
For details see He cryostats.
Dilution CryostatsDilution cryostats are used for very low temperatures down to millikelvin temperatures.
FurnacesActually, three furnaces are available covering the temperature range between RT and 1800 K. Two are constructed at the PSI. A third device was manufactured at the ILL (now available for AS Scientific). Please contact the sample environment group before any experiment with a furnace, as different aspects have to be discussed in advance. For details see furnace list.
MagnetsSupraconducting magnets are used to achieve magnetics fields up to 15 Tesla. The old 4 Tesla Magnet manufactured by Thor is limited in the temperature range, but has less stray fields and is therefore preferred on instruments with a magnetic environment. The Oxford Instruments Cryomagnets MA02 and MA09 from Risø may be used with sample temperatures from 300 K down to 0.1 K when combined with the dilution stick.
For details see magnet list.
Pressure DevicesThe clamp cell pressure devices are manufactured at the Institute for High Pressure Physics (RAS Moscow). Pressures up to 30 kbar (3 GPa) may be achieved. For details see pressure devices.
Additional EquipmentThe main temperature controller is the LakeShore Model 340. It is controlled with the TECS software. A quick help on TECS? is available. Under Additional Equipment information on additional equipment might be found.
TECSThe temperature control on most devices is handled with the TECS? software.
Additional information
Attachments: furs.gif mag.gif ill.gif dil_cryomagnet.jpg ccr.gif This particular version was published on 19-Dec-2005 08:07:26 UTC by MarkusZolliker. |
