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[en] We have studied a hot-wall heating system to produce GdBa2Cu3Oy (GdBCO) films with large critical currents (Ic) at a high production rate by a pulsed-laser-deposition (PLD) method. GdBCO films fabricated at a production rate of 30 m/h under the optimized conditions, especially a distance of 95 mm between the target and the substrate (T-S), exhibited high critical current densities (Jc) of about 3 MA/cm2 and Ic over 300 A at a thickness of 1-2 μm. Furthermore, long GdBCO tapes prepared by repeated depositions at each tape-passing speed of 80 m/h showed uniform Ic distribution along the longitudinal direction, because the hot-wall system enabled to stabilize temperature within a few degrees at 800 deg. C. A 170 m long tape with Ic over 600 A was successfully fabricated at a production rate of 16 m/h using a laser power of 360 W.