Speaker
Crispin Contreras-Martinez
(Fermi National Accelerator Laboratory)
Description
The LCLS-II HE superconducting linac can produce multi-energy beams by supporting multiple undulator lines simultaneously. This could be achieved by using the cavity SRF tuner in the off-frequency detune mode. This off-frequency operation method was tested in 8 cryomodules at Fermilab at 2 K. In all the tests the tuners successfully achieved a frequency shift of -565±80 kHz from the 1.3 GHz value. This study discusses the cavity frequency during each stage of assembly from the cryomodule string to when they are finally tested at 2 K. Monitoring the cavity frequency from this initial stage contributed in reaching this large frequency shift. The specific procedures of tuner setting during assembly will be presented.
| Region represented | North America |
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Primary author
Crispin Contreras-Martinez
(Fermi National Accelerator Laboratory)
Co-authors
Andrew Cravatta
(Fermi National Accelerator Laboratory)
Brian Hartsell
(Fermi National Accelerator Laboratory)
Gennady Romanov
(Fermi National Accelerator Laboratory)
Joshua Kaluzny
(Fermi National Accelerator Laboratory)
Sam Posen
(Fermi National Accelerator Laboratory)
Timergali Khabiboulline
(Fermi National Accelerator Laboratory)
Tug Arkan
(Fermi National Accelerator Laboratory)
Yuriy Pischalnikov
(Fermi National Accelerator Laboratory)
