Galante, B, Tranquille, GA, Welsch, CP 
ORCID: 0000-0001-7085-0973 and López, JR
(2021)
OPTIMIZATION OF THE ELECTRON EMISSION FROM CARBON NANOTUBES FOR ELECTRON COOLING IN ELENA.
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Abstract
Electron cooling guarantees beam quality in low energy antimatter facilities. The ELENA e-cooler permits to reduce the emittance blow-up of the p¯ beam, thus delivering highly focused and bright beams at the unprecedented low energy of 100 keV to the experiments. To have a "cold"beam at such low energy, the electron gun must emit a mono-energetic and relatively intense electron beam. Efficient cooling can be achieved with a 5 mA electron beam having transverse energy spread < 100 meV and longitudinal energy spread ∼ 1 meV. The thermionic gun used in operation limits the cooling performances due to a relatively high transverse energy of the emitted beam (≫ 100 meV). An optimization of the e-gun is being studied, aiming to develop a cold cathode gun based on carbon nanotubes (CNTs). The use of CNTs implies the need of an extracting grid to allow for a stable and uniform emission, although the grid's features are critical to control the electron beam properties.
| Item Type: | Conference or Workshop Item (Unspecified) |
|---|---|
| Depositing User: | Symplectic Admin |
| Date Deposited: | 11 Oct 2022 14:16 |
| Last Modified: | 18 Jan 2023 20:36 |
| DOI: | 10.18429/JACoW-COOL2021-P1010 |
| Open Access URL: | https://jacow.org/cool2021/papers/p1010.pdf |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3165376 |
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