Cryo stage

Principle

A LN2 reservoir is filled from outside the vessel. Its OFHC copper base situated inside the SXM vacuum at 77K is connected to a “floating” copper exchanger by flexible braids. This exchanger is held in thermal contact with the sample holder by samarium cobalt magnets (0.2mm clearance). The sample is insulated by a Polyetheretherketone (Peek) spacer ring (k = 0.25 W m-1 K-1). A 4 micron Ultralene window limits sublimation of the sample during pump down. 

Insertion of the cryo sample holder in the SXM stage (Design by E. Gagliardini, ESRF ISDD)

Sample holders

Principle of the sample holder (Design by R. Baker, B. Fayard, E. Gagliardini)

Different versions of the cryo sample holder are available