Low sample temperature (~ 100 K)
Cold sample coil and RF circuit
3.2 mm MAS rotor (15 kHz max at 100 K)
WB triple or double resonance probe (HCN, HXY, or HX NMR circuits)
Insert/eject of cold samples
Dry low-temperature nitrogen gas supply
3 cold gas lines: bearing, drive and VT
The automatic refill of liquid nitrogen supply
Waveguide for microwave irradiation
Long term operation (days, weeks)