[en] The performance evaluation of a cryopump made in USSR, to which special surface treatment was applied, was carried out. The surface area inside the pump is about 4400 cm², the dimensions of the pump are 250 mm in diameter and 500 mm in length, and the cryosurface is at the liquid helium temperature. The total capacity of the liquid helium vessel is about 6 liters. The main material of the pump is titanium. The attained pressure with the pump alone by attaching a blank flange to the exhaust port reached 10^-9 Pa without baking, about 30 hours after liquid helium was let in, and after 1400 hours, 2 x 10^-10 Pa was shown. On all the internal surfaces of the pump, aluminum was vapor deposited, and the crystal grain size is 2 - 3 μm, and the deposited film thickness is 2 - 3 μm. The surface roughness is Rmax = 0.16 μm. The quantity of helium evaporation is 0.075 liter/day in terms of liquid. This pump can be used for two and a half months by filling helium once. The cryopump, the vapor deposition method of metals, the evaluation experiment and the surface analysis are reported. (K.I.)