Beam Tests of Diamond-Like Carbon Coating for Mitigation of Electron Cloud
- Fermilab
- KEK, Tsukuba
Electron cloud beam instabilities are an important consideration in virtually all high-energy particle accelerators and could pose a formidable challenge to forthcoming high-intensity accelerator upgrades. Our results evaluate the efficacy of a diamond-like carbon (DLC) coating for the mitigation of electron in the Fermilab Main Injector. The interior surface of the beampipe conditions in response to electron bombardment from the electron cloud and we track the change in electron cloud flux over time in the DLC coated beampipe and uncoated stainless steel beampipe. The electron flux is measured by retarding field analyzers placed in a field-free region of the Main Injector. We find the DLC coating reduces the electron cloud signal to roughly 2\% of that measured in the uncoated stainless steel beampipe.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1423251
- Report Number(s):
- FERMILAB-CONF-17-581-APC; 1627467
- Resource Relation:
- Conference: 8th International Particle Accelerator Conference, Copenhagen, Denmark, 05/14-05/19/2017
- Country of Publication:
- United States
- Language:
- English
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