ARCS Sample Environment
Overview
Many Sample environments are available for ARCS, Magnets, Cryostats, Furnaces and more. Details are provided on the sample environment website
Arcs can handle sample environement up to 1 m in diamater.
Oscillating Radial Collimator
Inside the sample chamber there is an oscillating radial collimator on a vertical translation table. The oscillation is 1.6 o in a period of 21s. Details of the Collimator are provided in: M. B. Stone et al. Rev. Sci. Instrum. 85, 085101 (2014) For Sample environments that have several heat shields, this can significantly reduce the background. However for experiments using very low background sample environment this is not necessary and can be lowered out of the beam. For the largest Sample environment the Radial Collimator can not be used.
CCR 16
This is a top loading Closed Cycle Refrigerator with relatively low background. The in sample chamber shielding needs to be in the off center position. The radial collimator is usually used for this device. There are two stick options for this device a low temperature stick which can go from 5 to 300 K and a High temperature stick that can go from 20K to 700K More information on this device can be found on the Sample environment CCR-016 webpage
CCR 12
This is the lowest background Closed Cycle Refrigerator. Samples are loaded from the bottom. Usually only a thin Al foil heat shield is between the sample and the detectors for this device. This device can be used above room temperature by installing the Hot stage. This device adds an additional 1.75” between the mounting position and the center of the beam and provides a maximum temperature of 450 K. The sample chamber shielding needs to be in the center position. Usually the Radial collimator is not used for this device For more information on this CCR, see the sample environment CCR-012 webpage
Micas
The sample chamber shielding needs to be in the center position The radial collimator is usually used for this device. For more information on the Micas furnace, see the sample environment HOT-010 wepbage
Mag-001
This 5 T vertical field magnet can be used with the radial collimator For more information on this magnet, see the Sample environment MAG-001 webpage
MAG-005
This 8T vertical field magnet is used without the radial collimator. For more information, see the Sample environment MAG-005
Room Temperature stick
This stick mounts on a 16 inch flange and provides a simple way of putting as sample in the beam. The height of the flange to the beam center is 29.5 in.