High-Vacuum Simulations and Measurements on the SSR1 Cryomodule Beam-Line

Passarelli, Donato; Nicol, Thomas; Parise, Mattia; Ristori, Leonardo

doi:10.18429/JACoW-SRF2015-TUPB074

High-Vacuum Simulations and Measurements on the SSR1 Cryomodule Beam-Line

Dec, 2015

3 pages

Part of Proceedings, 17th International Conference on RF Superconductivity (SRF2015) : Whistler, Canada, September 13-18, 2015

Contribution to:

- SRF2015

Published: Dec, 2015

DOI:

10.18429/JACoW-SRF2015-TUPB074

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Abstract: (JACoW)

In order to guarantee an effective cool-down process for the SSR1 cryomodule, a high-vacuum level must be achieved at room temperature in the beam-line before introducing gaseous and liquid helium. The SSR1 cavities in the beamline have a small beam aperture compared to the size of their internal volume. To avoid unnecessary complications for the vacuum piping of the cryomodule cold-mass, a pilot study was conducted on the string prior to processing and qualification of the components to investigate the vacuum level achievable by pumping only through the beam-line. To estimate the pressure distribution inside the cavity string we used a mathematical model implemented in a test-particle Monte-Carlo simulator for ultra-high-vacuum systems.

vacuum
cavity
cryomodule
simulation
niobium

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