SRF2025 - 22nd International Conference on RF Superconductivity

Commissioning of the first HElmholtz LInear ACcelerators (HELIAC) cryomodule with heavy ion beam

MOB05

22 Sept 2025, 12:20

20m

Ito International Research Center

Board: MOB05

Invited Oral Presentation MC1: SRF Facilities Monday Oral Session: B

Speaker

Maksym Miski-Oglu (GSI Helmholtz Centre for Heavy Ion Research)

Description

The superconducting heavy ion HELmholtz LInear ACcelerator (HELIAC) is designed to meet the needs of the Super Heavy Element (SHE) research and material sciences user programs at GSI in Darmstadt. The HELIAC is planned for construction at GSI in Darmstadt. The beam energy can be varied smoothly between 3.5 and 7.3 MeV/u, with an average current of up to 1 emA and a duty cycle of 100 %. Recently, the first cryomodule CM1, was fully commissioned and tested w/o beam. CM1 comprises three Crossbar H-mode (CH)-type accelerator cavities, a CH-rebuncher, and two superconducting solenoid lenses. Following the commissioning of the cryogenic supply and the RF-systems, successful beam tests were conducted at the end of 2023 and mid of 2024. A helium as well as an argon ion beam was successfully accelerated to the design energy. The beam energy could be varied continuously between 1.3 and 3.1 MeV/u without any significant particle losses being measured in the cryomodule. This contribution covers the construction and commissioning of the first HELIAC cryomodule and the results of the beam test campaign.