Open-type heater manufacturing method used for synchronous-radiation in-situ test

The invention discloses an open-type heater manufacturing method used for a synchronous-radiation in-situ test. Center areas of a front side wall and a rear side wall of a heater are embedded with slices so as to form thin sidewalls. A ray incidence hole and a ray outgoing hole are arranged on the thin sidewalls of the heater. An upper portion and a lower portion of a good heat conduction block of the heater are provided with a plurality of vent hole channels. According to the vent hole channels, through alternatively arranging ventilation channels between adjacent vent hole channel ports on a front end surface and a rear end surface, and using two end socket plugging blocks with flat surfaces to plug two end sockets of the good heat conduction block of the heater which is provided with the vent hole channels, the vent hole channels are unidirectionally connected. By using the method, connection among ventilation pipelines is convenient to realize, a flowing path and heating time of a gas in the good heat con