Patent ID: 9192037
Filing Date: 2015-11-17
Classification: H05G

Abstract:
1. A control method for a target supply device that is provided in an EUV light generation apparatus and that includes a target generator having a nozzle and holding a target material, a pressure control unit configured to control a pressure within the target generator, and a heating unit configured to heat the target material within the target generator, the method comprising: melting the target material by heating the target material within the target generator using the heating unit; pushing out the target material in the target generator from a nozzle hole in the nozzle by pressurizing the interior of the target generator using the pressure control unit; determining whether or not the size of an adhering area of the target material that forms when the target material is pushed out from the nozzle hole and adheres to a leading end of the nozzle has reached a set size that covers the entire nozzle hole; stopping the pressurization of the interior of the target generator by the pressure control unit when the size of the adhering area has reached the set size; and hardening the target material in the target generator and the adhering area by stopping the heating of the target material by the heating unit.