[en] The described detector for imaging of explosions (DIMEX) has been in operation on the synchrotron radiation (SR) beam-line on the VEPP-3 electron ring at Budker INP since 2002. DIMEX is based on a one-coordinate gas ionization chamber filled with a Xe-CO₂(3:1) mixture at 7atm and active Frisch-grid made of a Gas Electron Multiplier (GEM). The detector has a spatial resolution of 0.2mm and dynamic range of ∼100, which allows one to achieve a signal measurement precision of a few percent. The frame rate can be tuned up to 8 MHz (125 ns per image) and as many as 32 images can be stored in one shot. At present DIMEX is used with the X-ray beam from a 2T wiggler with an average energy of 20 keV. The future possibility to install a similar detector on the SR beam-line on the VEPP-4 electron ring is discussed