SBIR Phase II: A Compact Betatron for Nondestructive Evaluation

这个小企业创新研究第11阶段项目可以显着降低放射无损评估的成本。 Adelphi建议建造一个廉价的紧凑型电子感应加速器，能够发射高通量X射线，用于民用结构的无损评估（NDE）。 拟议的X射线源将取代更昂贵的RF直线加速器，从而降低放射设备的成本。 在传统的电子感应加速器中，铁中的涡流损耗限制了频率和最大场，从而限制了输出束功率。 通过使用专有的低损耗、高频材料，更高的驱动频率允许更高的X射线通量，同时仍然减小了源的尺寸。 放射性无损检测需要这样一种廉价的X射线源来提供快速、高信噪比的分析。 作为原理的证明，将建造和测试一个原型电子感应加速器x射线源。 拟议的研究将表明，电子感应加速器将提供快速评估高达70厘米厚的混凝土结构所需的X射线通量。 根据这一建议开发的基于电子感应加速器的X射线源将立即获得商业应用，作为目前工业无损检测中使用的直线加速器的替代品。 这种廉价的高通量X射线源的第二个应用是发展中国家癌症的放射治疗。

This Small Business Innovation Research Phase 11 project could significantly reduce the cost of radiologic nondestructive assessment. Adelphi proposes to construct an inexpensive compact betatron, capable of high-flux x-ray emisson, for the purpose of Nondestructive Evaluation (NDE) in civil structures. The proposed x-ray source would replace more expensive RF linacs and thereby reduce the cost of radiological equipment. In conventional betatrons, eddy-current losses in the iron limit the frequency and the maximum field, thereby limiting the output beam power. With the use of proprietary low-loss, high-frequency materials, higher driving frequencies permit much higher x-ray fluxes while still reducing the size of the source. Radiologic NDE requires just such an inexpensive x-ray source to provide rapid, high signal-to-noise analyses. As a proof of principle, a prototype betatron x-ray source will be constructed and tested. The proposed research will demonstrate that the betatron will provide an x-ray flux necessary for rapid evaluation of concrete structures up to 70 cm thick. The betatron-based x-ray source developed under this proposal will find immediate commercial application as a replacement for the linacs currently used in industrial NDE. A second application for such an inexpensive high-flux x-ray source is radiotherapy treatment of cancer in developing countries.