IPAC'25 - the 16th International Particle Accelerator Conferece

Development of a variable power divider for the ILC power distribution system

WEPB072

4 Jun 2025, 16:00

2h

Exhibiton Hall A _Bear (TWTC)

Poster Presentation MC7.T07 Superconducting RF Wednesday Poster Session

Speaker

Prakash Joshi (The Graduate University for Advanced Studies, SOKENDAI)

Description

The R&D of the radio frequency (RF) power distribution system (PDS) for the International Linear Collider is ongoing. The PDS is designed to drive 39 superconducting RF (SRF) cavities by a 10 MW multibeam klystron. The key feature of the PDS is the usage of power dividers and phase shifters, which allow driving all cavities below their respective operational limits over the whole flattop. This is necessary to maximize the beam energy. Following the design of the variable power divider (VPD) developed at SLAC, we intend to combine power dividing and phase shifting capabilities in a single device. The VPD consists of two folded magic tees (FMTs), four small WR650 waveguides, and two U-bends. The U-bends serve as variable phase shifters. The FMTs have been designed, fabricated, and tested. A prototype for the checking the working mechanism of U-bend phase shifter was produced. Preparations for its high-power testing are currently underway.

Funding Agency

Expected from IPAC25 organizers.