No. 54 (2011): Linear Collider Sub-Systems

Issue Editor: J. Gao, Editor-in-Chief: W. Chou

The editor of this issue is Prof. Jie Gao, a panel member and a senior scientist at IHEP, China. Jie collected a number of excellent review articles in the theme sections 2–4 on three important linear collider subsystems—the positron source, the damping rings and the final focus test facility. 
In this issue, in contrast to No. 32, instead of focusing on accelerator structures, we present material on three key subsystems of the ILC: the polarized positron source, the damping rings and the final focus system (ATF2). These elements are challenged by the design goal requirements, for example, a highly polarized positron beam, and extreme low emittance and extreme small beam size at the IP. Thanks to the three ILC TDR subsystem chairpersons, we have been able to collect high level articles, reflecting the state of the art of the corresponding fields. In the remaining part of this issue, we provide laboratory reports from different accelerator laboratories, mainly from China this time.