Industrilization study for 12 GHz Accelerating Structures for CLIC 380

The Compact Linear Collider (CLIC) is a multi-TeV electron-positron machine under development by the CLIC accelerator collaboration for few decades. To be compact, the design aims to provide a very high accelerating gradient (100 MV/m) achieved by incorporating normal conductive radiofrequency (RF) cavities operating in X-band range (12 GHz). Each accelerating structure is a challenging component involved ultra-precise machining and diffusion bonding techniques. The first stage of CLIC operates at collision energy of 380 GeV for a site length of 11 km. It demands about 21630 accelerating structures. The present number of qualified suppliers for both machining and joining techniques is limited. Therefore, an industrialization study was done through a technical survey with qualified hi-tech companies. The aim is to evaluate capabilities of the current suppliers, to ensure the necessary manufacturing yield, schedule, and cost for mass production. Moreover, the strategy for ramping-up the production volume is individual to each supplier. The study will be followed by preparing an implementation strategy, which includes organization of the supply among different companies and quality assurance scheme. This note presents the results of the industrialization study for 12 GHz accelerating structures for CLIC 380 GeV, highlighting the principal challenges towards mass production.