Studies on an S-band bunching system with hybrid buncher

Abstract

Generally, a standard bunching system is composed by an SW pre-buncher, a TW buncher and a standard accelerating section. However, there is one way to simplify the whole system to some extent by using the hybrid buncher, which is a combined structure of the SW pre-buncher and the TW buncher. Here the beam dynamics studies on an S-band bunching system with the hybrid buncher is presented, and simulation results show that similar beam performance can be obtained at the linac exit by using this kind of bunching system rather than the standard one. In the meantime, the structure design of the hybrid buncher is also described. Furthermore, the standard accelerating section can also be integrated with the hybrid buncher, which can further simplify the usual bunching system and lower the construction cost.

Design studies on an s-band hybrid accelerating structure

“…unit length (1) P is the power flow through the surface, which is parallel to the direction of the group velocity v g for the TW. W TW is the energy stored per unit length, which is half of W SW .…”

“…In an electron linac, the standard bunching system is composed of a standing-wave (SW) pre-buncher (PB), a travelling-wave (TW) buncher and a standard accelerating structure [1]. In the industrial area, the bunching system is usually simplified to reduce the cost by eliminating the PB and integrating the B and the standard accelerating structure together to form the β-varied accelerating structure.…”