DYNAflow cryostat

The DYNAflow cryostat is a helium exchange gas continuous flow cryostat. A cooling liquid is drawn from a helium  dewar and circulates through the cryostat. The helium flow is regulated by a needle valve on the transfer line and and by a regulator in the exhaust line. Precise temperature control is obtained using a temperature controller. 

The sample can be changed while the cryostat stays at low temperature.

Specifications:

• Temperature range:                                                                  3.8 - 300 K
• Temperature stability:                                                              ±0.1 K
• Cooldown time (initial from ambient):                                 90 min
• Sample change time:                                                                <1 min
• Weight:                                                                                          2 kg
• Temperature controller:                                                            LakeShore
• Temperature sensors:                                                              Cernox (close to heat exchange)
                                                                                                          Si diode (close to sample)