Establishment of a new detection system for measuring primary knock-on atoms and fission fragments

Tsai, P.-E.; Iwamoto, Yosuke   ; Hagiwara, Masayuki*; Sato, Tatsuhiko   ; Satoh, Daiki   ; Ito, Masatoshi*; Watabe, Hiroshi*

A new detection system has been designed and constructed dedicating for the measurements of primary knock-on atoms and fission fragments, whose cross sections are critical in the design of accelerator driven systems. The detection system consists of two fast timing detectors and one dE-E energy detector. The particle species are identified by two relationships: the time-of-flight (ToF) vs E and dE vs E, and then the kinetic energy of the identified particles can be derived from the ToF. The PHITS Monte Carlo simulation code was employed for designing detectors and estimating the performance of the detection system. The new detection system will be tested at the JAEA Tandem Facility and the Cyclotron and Radioisotope Center (CYRIC) at the Tohoku University in 2017. The preliminary test results along with the PHITS simulations will be presented at the Workshop.