The invention relates to a system meant to be used for measurements of absorbed dose and dose distribution in intense radiation beams. According to the invention, the system comprises a dosimetric cell consisting of a glass tube closed at one end, with an external diameter of 15 mm and a height adequate to the electrons useful path in the dosimetric solution, and a cover with a thickness of a few microns, made of natural mica, polyester or polystyrene foil, and a device for positioning the dosimetric cells, which comprises a top support plate, a dosimetric cell extraction assembly and a positioning support, where the system may be used both in vertical and horizontal plane.