Conceptual Design of an L-Band Recirculating Superconducting Traveling Wave Accelerating Structure for ILC.

Avrakhov, P. ; Kanareykin, A. ; Liu, Z. ; Kazakov, S. ; Solyak, N.

Technical Information Center Oak Ridge Tennessee

关键词: Accelerators;    Travelling waves;    Linear colliders;    Design;    Gradients;   

RP-ID  :  DE2007917865

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

With this paper, we propose the conceptual design of a traveling wave accelerating structure for a superconducting accelerator. The overall goal is to study a traveling wave (TW) superconducting (SC) accelerating structure for ILC that allows an increased accelerating gradient and, therefore reduction of the length of the collider. The conceptual studies were performed in order to optimize the acceleration structure design by minimizing the surface fields inside the cavity of the structure, to make the design compatible with existing technology, and to determine the maximum achievable gain in the accelerating gradient. The proposed solution considers RF feedback system redirecting the accelerating wave that passed through the superconducting traveling wave acceleration (STWA) section back to the input of the accelerating structure. The STWA structure has more cells per unit length than a TESLA structure but provides an accelerating gradient higher than a TESLA structure, consequently reducing the cost. In this paper, the STWA cell shape optimization, coupler cell design and feedback waveguide solution are considered.