Graduate student support for accelerator physics projects on ARIEL

2010年6月，加拿大创新基金会(CFI)批准了对TRIUMF超导电子直线加速器(e-linac)的资本资助，作为先进稀有同位素实验室(Ariel)的第一阶段。加速器于2014年9月成功试运行。CFI已经批准了第二阶段(ARIEL-II)的资金，省级对匹配资金的批准即将敲定。ARIELII包括两个新靶站的基础设施，以及电子诱导的光裂变和质子诱导的裂变、层裂和碎裂反应产生的同位素的离子束输送系统。这些放射性同位素随后被提供给核、核天体物理和材料科学研究以及医学应用的实验。*此申请是为了续订NSERC对我们的研究生的支持，使他们能够继续参与Ariel，从而获得在加速器物理方面的宝贵培训。虽然资本成本由批准的CFI资金支付，但CFI并不支持研究生的培训。*我们的学生在许多领域为Ariel做出了宝贵的贡献。学生们参与了观察屏光束轮廓监视器的设计、建造和操作，并在电子直线加速器的调试中得到了广泛的应用。一名学生利用超导射频开发了一种新的光束偏转器设计，这是电子直线加速器未来升级所必需的，原型将很快进行测试。其他学生正在进行模拟和测试，以最终确定目标站具有挑战性的要素的设计。这包括光电转换器和离子提取光学系统，前者能在靶体前方产生光能裂变所需的高能光子，后者能加速和聚焦从靶体释放的稀有同位素离子。几年内，电子直线加速器将开始为科学生产同位素，大大扩大了TRIUMF的同位素研究计划。本课程将为学生提供一个学习加速器物理重要技能的绝佳机会。

Capital funding for a superconducting electron linear accelerator at TRIUMF, known as the e-linac, was approved through the Canada Foundation for Innovation (CFI) in June 2010, as the first phase of the advanced rare isotope laboratory (ARIEL). The accelerator was successfully commissioned in September 2014. CFI has approved funding for the second phase (ARIEL-II) and provincial approval for matching funding is nearly finalized. ARIEL II includes infrastructure for two new target stations and ion beam delivery systems for isotopes produced by electron-induced photo-fission as well as by proton-induced fission, spallation and fragmentation reactions. These radioisotopes are then delivered to experiments for nuclear, nuclear astrophysics, and material science research, as well as for medical applications.******This application is a request to renew NSERC support for our graduate students to allow them to continue to participate in ARIEL, thereby receiving valuable training in accelerator physics. While capital costs are covered through the approved CFI funding, CFI does not support the training of graduate students.******Our students have made valuable contributions to ARIEL in many areas. Students participated in the design, construction, and operation of view screen beam profile monitors, that have been used extensively in the commissioning of the e-linac. A student has developed a novel design for a beam deflector, necessary for future upgrades of the e-linac, using superconducting RF, and a prototype will be tested soon. Other students are working on simulation and tests to finalize the design of challenging elements of the target station. This includes the photo-converter, that produces the high energy photons needed for photo-fission immediately in front of the target, and the ion extraction optics system, that accelerates and focuses the rare isotope ions released from the target.******Within a few years, the e-linac will begin producing isotopes for science, significantly expanding the isotope research program at TRIUMF. This period will offer an excellent opportunity for students to learn important skills in accelerator physics.