experimenter

noun
1
a person who carries out a scientific experiment or experiments in order to study what happens and to gain new knowledge
آزمایشگر, آزمایش‌کننده, آزمایش‌گر
2
a person who tries or tests new ideas, methods, etc. to find out what effect they have
آزمایشگر, تجربه‌گر
This writer was one of the early experimenters with the new machine.