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KEKにおけるITNクライオモジュール用空洞チューナーの開発

Development of a cavity tuner for the ITN cryomodule at KEK

○オメット マチュー，梅森 健成，山本 康史，道前 武，クマール アシーシ，山田 智宏，山本 明（KEK），--，--（FNAL）

○Mathieu Omet, Kensei Umemori, Yasuchika Yamamoto, Takeshi Dohmae, Ashish Kumar, Tomohiro Yamada, Akira Yamamoto (KEK), Yuriy Pischalnikov, Crispin Contreras-martinez (FNAL)

In this contribution we report on the status of the development of a cavity tuner. It will be used in a cryomodule, which is being developed and will be built and tested in the scope of the International Linear Collider (ILC) Technology Network (ITN) at KEK until 2027. Simulations of Lorentz-force detuning of the according SRF 1.3 GHz 9-cell TESLA-type cavities were performed in order to understand the tuner requirements better. The LCLS-II double-lever tuner was selected as the base of the ITN cavity tuner design. In a collaboration with Fermilab an LCLS-II tuner on an LCLS-II cavity was tested at room temperature and atmospheric pressure at KEK. Furthermore, a domestically produced prototype tuner was tested on the same cavity at the same conditions. Design adjustments are being considered based on the gained experience. The driving electronics for the slow and fast tuner were partially selected.