Development of NbTi CCT superconducting magnet technology for radiotherapy applications

用于放射治疗应用的NbTi CCT超导磁体技术的开发

• 批准号: 2487059
• 金额: --
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2487059
• 关键词: Development; NbTi; CCT; superconducting; magnet

Start-of-the-art particle radiotherapy facilities benefit from superconducting (SC) magnet technology to allow a significant reduction in their size. This is particularly important in the next generation of ion therapy systems that will deliver carbon-ion beams to patients and will significantly expand the range of treatments offered to patients; present-generation particle sources can be reduced from c.80m to c25m in size by using superconducting magnets utilizing industrially-proven niobium-titanium cable technology delivering fields around 5T. However, no suitable design of superconducting prototype magnet has yet been demonstrated.This project aims to develop the science and engineering of a novel canted-cosine-theta (CCT) combined-function (CF) dipole in a curved cryostat with large (>80mm) central aperture. The first aim of this study will be applied to a compact synchrotron utilizing a highly-novel hybrid rapid cycling design that has not been previously proposed; a rapid-cycling compact C6+ synchrotron would deliver a step change in therapy by delivering both high dose rates and rapid, precise variation of the dose delivery at different treatment depths in patients. The development of a suitable CF magnet is the key enabler for this project, which would deliver the next-generation of ion therapy system to be applied in Europe, and which has been identified in the UK as a future needed treatment facility. Other applications include use of similar technology for the final dose delivery, and for other applications in particle sources for x-ray imaging science.Working with our project partners in the CERN superconducting magnet design group and at STFC Daresbury Laboratory/University of Melbourne, we will use our previous experience of CCT design to develop a curved (90-degree) dipole/quadrupole magnet with alternating-gradient focusing in a single cryo-cooled rotating cryostat; this has not previously been done. CERN collaboration will provide their extensive engineering knowledge of winding and assembling similar magnet systems, and we intend to prototype a candidate magnet during the PhD duration. Later options include the use of alternative conductor materials such as NbSn and REBCO to achieve larger aperture magnets.There is significant scope to translate the technology into UK industry. Several UK companies have existing SC production in areas such as MRI magnet systems, and we will explore partnerships with suitable suppliers to look forward to later construction of a UK ion treatment facility.

最先进的粒子放射治疗设施受益于超导(SC)磁体技术，使其尺寸得以显著缩小。这在下一代离子治疗系统中尤其重要，该系统将向患者提供碳离子束，并将显著扩大为患者提供的治疗范围；通过使用超导磁体，当前一代粒子源的尺寸可以从约80m减小到c25m，该系统利用经过工业验证的Nb-Ti电缆技术，提供约5T的电场。然而，目前还没有合适的超导原型磁体的设计。该项目旨在发展一种新型的斜余弦-西塔(CCT)组合函数(CF)偶极子的科学和工程技术，该偶极子位于中心孔径为80 mm的弯曲恒温器中。这项研究的第一个目标将应用于紧凑型同步加速器，该加速器利用一种以前没有提出过的高度新颖的混合快速循环设计；快速循环紧凑型C6+同步加速器将通过在患者的不同治疗深度提供高剂量率和快速、精确的剂量输送来实现治疗的阶段性变化。开发合适的CF磁体是该项目的关键推动因素，该项目将提供将在欧洲应用的下一代离子治疗系统，该系统已在英国被确定为未来所需的治疗设施。其他应用包括将类似的技术用于最终剂量传输，以及用于粒子源的其他应用，用于X射线成像科学。与我们在CERN超导磁体设计组和STFC达累斯伯里实验室/墨尔本大学的项目合作伙伴合作，我们将利用我们以前的CCT设计经验，开发一种在单个低温冷却旋转恒温器中具有交替梯度聚焦的弯曲(90度)偶极/四极磁体；这是以前从未做过的。CERN的合作将提供他们在绕组和组装类似磁体系统方面的广泛工程知识，我们打算在博士期间制作候选磁体的原型。后来的选择包括使用替代的导体材料，如NbSnO和REBCO，以实现更大口径的磁体。将该技术转化为英国工业的空间很大。几家英国公司已经在核磁共振磁体系统等领域进行了SC生产，我们将探索与合适的供应商建立合作伙伴关系，以期待稍后在英国建设一座离子处理设施。