The setup is intended for studying spectral dependences of the quantum yiel
d and the degree of polarization of a beam of photoelectrons emitted from s
emiconductor heterostructures irradiated by circularly polarized light in a
wavelength range of 360-1200 nm. The beam polarization vector direction ca
n be reversed without affecting the main electron-optical features of the b
eam. The polarization of electrons is measured by a mini-Mott polarimeter w
ith an operating voltage of 30 kV. The vacuum setup has a load-lock system
for quick loading of samples and a cryostat. The setup is fully computer-co
ntrolled. Electron beams with a polarization of up to 88% were obtained wit
h photocathodes at room temperature.