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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 12: Radiofrequency and Instrumentation I

AKBP 12.1: Vortrag

Freitag, 4. April 2025, 09:00–09:15, ZHG004

Refurbishment of TESLA Cavities for future ERL upgrades at MESA (*)(**) — •Paul Plattner, Florian Hug, and Timo Stengler — Institut für Kernphysik, Mainz, Deutschland

A future upgrade from 1 mA to 10 mA beam current is planned for the Mainz Energy-Recovering Superconducting Accelerator (MESA), an Energy-Recovering (ER) LINAC. Calculations show a potential limitation of the Higher Order Mode (HOM) antennas, which couple the stored power from HOM out. Through the upgrade of the beam current a quench at the HOM antenna would happen. This limit can be increased by using a superconducting material with a higher ctritical temperature than Niobium. For the studies are chosen NbTiN and Nb3Sn, which are applied as a thin film on substrates like Niobium and Copper. The modified antennes will be tested in an cryomodule from the decomissioned ALICE. This cryomodule need to be refurbished and modified for fulfill the requirements for MESA. (*)We would like to thank STFC Daresbury for their generous gift. (**)The work received funding by BMBF through 05H21UMRB1.

Keywords: Superconductivity; Radio frequency; Surface treatment