A Programme of Research and Development on the Improvement of SRF Cavities for Future Accelerators

未来加速器 SRF 腔改进的研究与开发计划

• 批准号: 436258-2013
• 负责人: Merminga, Nikolitsa
• 金额: $ 3.72万
• 依托单位: TRIUMF
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Project
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=574330
• 关键词: Programme; Research; Development; Improvement; SRF

Owing to the tremendous advances in RF superconductivity in recent years and to the successful operation of large scale SRF accelerator installations, superconducting RF (SRF) has become the technology of choice for modern particle accelerators. This proposal comprises a set of interlinked and complementary projects aiming towards improving the performance of SRF cavities for future accelerators, and advancing the field of RF superconductivity. This application requests funds for undergraduate and graduate students and postdocts to participate in SRF research, thereby receiving valuable training in this active and ever-expanding field, and is accompanied by five RTIs that request funds for associated experimental equipment. Building on recent experiments at TRIUMF's muSR facility, we propose to perform fundamental studies of RF superconductivity using magnetometry, muSR and the proposed high-field extension of the betaNMR spectrometer to obtain information on the penetration of magnetic flux near the surface of the Nb superconductor, and to explore correlations between magnetic response of Nb and rf measurements of Nb cavities. To obtain a detailed and precise picture of the rf characteristics of cavities, we will develop a temperature mapping system. Aiming to devise new, cost-effective heat treatments for cavities, we propose to develop a UHV rf induction oven for processing both samples of niobium as well as single cell 1.3GHz cavities, that will help increase the Q value of the resonator. To expand the capability of the ARIEL e-linac, students will design, construct and test a novel SRF separator cavity capable of high transverse deflecting fields and CW operation, that will enable the simultaneous operation of the e-linac for RIB delivery and for production of ERL/FEL driven radiation. In support of all activities in this programme, we will develop instrumentation, techniques and infrastructure to perform rf measurements of fundamental and higher order modes in accelerating and deflecting cavities.

由于近年来射频超导性的巨大进步和大规模SRF加速器装置的成功运行，超导射频（SRF）已成为现代粒子加速器的首选技术。 该提案包括一系列相互关联和互补的项目，旨在改善未来加速器SRF腔的性能，并推进RF超导领域。该申请要求为本科生、研究生和博士后提供资金，以参与SRF研究，从而在这一活跃和不断扩大的领域接受有价值的培训，并附有五个RTIs，要求为相关实验设备提供资金。 在TRIUMF的muSR设施最近的实验的基础上，我们建议使用磁力测量，muSR和拟议的高场扩展的β NMR光谱仪进行RF超导性的基础研究，以获得有关Nb超导体表面附近的磁通量渗透的信息，并探索Nb的磁响应和Nb腔的RF测量之间的相关性。为了获得腔体射频特性的详细而精确的图像，我们将开发一个温度测绘系统。为了设计新的，具有成本效益的腔体热处理，我们建议开发一种用于处理铌样品以及单电池1.3GHz腔体的UHV射频感应炉，这将有助于提高谐振器的Q值。为了扩大ARIEL电子直线加速器的能力，学生将设计，建造和测试一种新型的SRF分离器腔，能够进行高横向偏转场和CW操作，这将使电子直线加速器能够同时操作RIB交付和ERL/FEL驱动辐射的生产。为了支持本计划的所有活动，我们将开发仪器、技术和基础设施，以进行加速腔和偏转腔中基模和高阶模的射频测量。