Design of a magnetically shielded helium cryostat insert with a variable temperature regulated stage

This note describes the design and realization of a liquid helium cryostat insert comprising a variable temperature regulated stage. The latter is magnetically shielded by a superconducting lead pot bathing in liquid helium. This apparatus is intended for the study of high Tc superconducting films and superconducting quantum interference devices submitted to different applied magnetic fields for temperatures ranging from 50 to 100 K.