[en] The photon dose distribution along the beam direction of the 2.5 MeV electrostatic generator of the Nuclear Physics Department, AEE of Egypt has been measured by different type of detectors. The experiments were carried out under different machine operating conditions while the (p,α) reaction on a Co⁵⁹ target takes place. In this case, detectors of high sensitivity and known energy dependence are required to measure only one sort of radiation (photons). The detectors were located at sites where personnel might possibly be exposed to an adverse amount of radiation. The results affored, give useful estimate of the photon dose distribution at the different Van De Graaff areas. (author)