Introduction to nuclear reactor experiments This open access book is a pedagogical text on nuclear reactor experiments covering almost all the experiments that can be carried out at the University Training Reactor Kindai University (UTR KINKI) with respect to reactor physics and radiation detection and additionally including academic materials of test and research reactors nuclear instrumentation nuclear laws and regulations in this main body. The book is an excellent primer for students who are interested in reactor physics radiation detection nuclear laws and regulations at universities and the best textbook for students who have started to study the nuclear energy related fields to understand the basic theories and principles of the experiments in the fields of reactor physics and radiation detection. UTR KINKI has been used for educational reactor experiments and basic research in a wide range of fields related to the use of radiation (neutrons gamma ray beta ray alpha ray and X ray) including reactor physics radiation detection radiation health physics activation analysis radiation biology medical applications and archaeology. Also UTR KINKI has been actively engaged in nuclear education with its long history of operation and has gained extensive experience in educational activities for undergraduate and graduate students elementary junior high and high school teachers junior high and high school students and general audiences.