塔形喇叭照射器的参数优化设计

作为照射器的馈源，反射面天线和透镜天线主要要求两主面相心应尽量靠近，两主面波办应尽量相等，波导尺寸应与塔形嗽叭匹配，由此建立电性与照射器的几何结构参数的优化数学模型。通过寻优，得到了较为满意的优化结果，为照射器的二次开发设计提供了可靠的依据。     

Neutron Capture Therapy （NCT） ＆ In-Hospital Neutron Irradiator （IHNI）-a new technology on binary targeting radiation therapy of cancer

BNCT is finally becoming ＂a new option against cancer＂. The difficulties for its development progress of that firstly is to improve the performance of boron compounds, secondly, it is the requirements of quantification and accuracy upon radiation dosimetry evaluation in clinical trials. Furthermore, that is long anticipation on hospital base neutron sources. It includes dedicated new NCT reactor, accelerator based neutron sources, and isotope source facilities. In ad- dition to reactors, so far, the technology of other types of sources for clinical trials is not yet completely proven. The In- Hospital Neutron lrradiator specially designed for NCT, based on the MNSR successfully developed by China, can be installed inside or near the hospital and operated directly by doctors. The Irradiator has two neutron beams for respective treatment of the shallow and deep tumors. It is expected to initiate operation in the end of this year. It would provide a safe, low cost, and effective treatment tool for the NCT routine application in near future.