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Journals and Conferences
We have developed a tiny neutron probe detector as a monitor of a thermal neutron flux for boron neutron capture therapy. The detector consists of an optical fibre and a small neutron probe. We have used a film-like ZnS(Ag) scintillator and a 6LiF neutron converter for the neutron probe. In order to improve the gamma-neutron discrimination ability, vacuum… (More)
The KEKB B-factory is an energy-asymmetric e+edouble-ring collider at KEK. It has been operated since December 1998, and has recently marked the peak luminosity of 7.35 /nb/s which is the highest value in the history of colliders. By several improvements such as solenoid windings in LER, new moving-chamber masks in HER, etc., the luminosity performance of… (More)
This report summarizes observed phenomena related to the beam-beam effects in the KEKB collider. A general performance of the beam-beam effect is described. An emphasis is put on the reduction of the specific luminosity with shorter bunch spacing.