The magnet field is in the horizontal direction, with a four-way optical cross through the coil.
An integrated Variable Temperature Inset VTI provides 25 mm sample access vertically to the magnet center.
On the end of the VTI is a sample pot with four windows providing optical access to the sample. There are corresponding windows on the radiation shields and on the outer vessel. All these windows are from Z-cut quartz order to have transmission in the THz range.
The VTI sample access can be controlled at temperatures in the range 1.6 K-325K.