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Description
The NSRRC Taiwan Photon Source (TPS) LINAC system consists of a DC thermionic electron gun, a Sub-Harmonic Pre-Buncher, a Primary Buncher, a Final Buncher, three S-band LINAC sections, and three 35-MW S-band klystrons. The TPS LINAC was designed by Research Instruments (RI). In the original design, the S-band klystrons were Thales TH2100A tubes. Due to unstable production quality in recent years and the resulting reduction in tube lifetime, NSRRC initiated a klystron upgrade program to replace the TH2100A with the E37310A klystron manufactured by CETD.
The primary objective of this work is to analyze the RI-designed LINAC system and complete the necessary modification design so that it can operate with the CETD E37310A klystron and supply the required RF power. Leveraging the technology and experience gained from the in-house development of the THz FEL pulse RF system, NSRRC successfully upgraded the Taiwan Light Source LINAC pulse RF system in August 2023. After six months of stable operation, planning for upgrading the three TPS LINAC pulse RF systems began in 2024. Compared with the TLS system, the RI turnkey LINAC is more complex and requires additional study to support an in-house upgrade.
This paper presents the upgrade work and results of the first and second TPS LINAC pulse RF systems completed in September 2025 and January 2026, including system installation, modulator modification design, testing results, and current operational status.
| Paper status | Proceeding files received |
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