Positron beam facility at Kyoto University Research Reactor

Q. Xu, K. Sato, T. Yoshiie, T. Sano, H. Kawabe, Y. Nagai, K. Nagumo, K. Inoue, T. Toyama, N. Oshima, A. Kinomura, Y. Shirai

Research output: Contribution to journalConference articlepeer-review

17 Citations (Scopus)


A positron beam facility is presently under construction at the Kyoto University Research Reactor (KUR), which is a light-water moderated tank-type reactor operated at a rated thermal power of 5 MW. A cadmium (Cd) - tungsten (W) source similar to that used in NEPOMUC was chosen in the KUR because Cd is very efficient at producing γ-rays when exposed to thermal neutron flux, and W is a widely used in converter and moderator materials. High-energy positrons are moderated by a W moderator with a mesh structure. Electrical lenses and a solenoid magnetic field are used to extract the moderated positrons and guide them to a platform outside of the reactor, respectively. Since Japan is an earthquake-prone country, a special attention is paid for the design of the in-pile positron source so as not to damage the reactor in the severe earthquake.

Original languageEnglish
Article number012030
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2014
Event13th International Workshop on Slow Positron Beam Techniques and Applications, SLOPOS 2013 - Munich, Germany
Duration: 2013 Sept 152013 Sept 20


Dive into the research topics of 'Positron beam facility at Kyoto University Research Reactor'. Together they form a unique fingerprint.

Cite this