SBIR Phase I: Advanced Positron Beam Source

这个小企业创新研究第一阶段项目将建立开发先进正电子束源（APBS）的可行性，该源可以提供高质量的脉冲正电子束，适用于材料科学的一系列分析仪器。该项目基于使用缓冲气体在Penning捕集器中从放射源积累正电子的最新技术发展。第一阶段的技术目标是：(1)实验证明可以从磁场中提取正电子，并增强重调节亮度；(2)获得设计最先进的新型小型捕集器所需的实验数据；(3)设计APBS系统的实验室样机。实验将在UCSD正电子阱上进行。如果成功，该项目将为第二阶段实验室原型APBS的演示提供基础。正电子束可用于评价金属、半导体和聚合物的各种性能。这些技术商业化开发的一个主要障碍是缺乏合适的低能量正电子束源。APBS将通过提供一种紧凑、低成本、用户友好的正电子束源来满足这一需求，该正电子束源可以作为工业环境中的交钥匙系统。APBS将具有任何其他系统所不具备的性能特征。

9861217 This Small Business Innovation Research Phase I project will establish the feasibility of developing an Advanced Positron Beam Source (APBS) that can a provide high quality pulsed positron beam suitable for a range of analytical instruments for materials science. The project is based on the latest developments in techniques to accumulate positrons from a radioactive source in Penning traps using a buffer gas. The technical objectives of Phase I are: (1) to demonstrate experimentally that positrons can be extracted from the magnetic field and remoderation brightness enhanced; (2) to obtain experimental data required for the design of a new state-of-the art compact trap; and (3) to design a laboratory prototype of the APBS system. The experiments will be performed on the UCSD positron trap. If successful, this project will provide the basis for demonstration of a laboratory prototype APBS in Phase II. Positron beams can be used for the evaluation of a wide range of properties of metals, semiconductors and polymers. A major obstacle to the commercial exploitation of these techniques is the lack of a suitable low-energy positron beam source. The APBS will fill this need by providing a compact, low-cost, user-friendly positron beam source that can function as a turnkey system in an industrial environment. The APBS will have performance characteristics that are not available from any other system.