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@inproceedings{cultrera:ipac2021-moxc02,
author = {L. Cultrera},
title = {{Improved Lifetime of a High Spin Polarization Superlattice Photocathode}},
booktitle = {Proc. IPAC'21},
pages = {31--36},
eid = {MOXC02},
language = {english},
keywords = {electron, cathode, polarization, gun, vacuum},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-MOXC02},
url = {https://jacow.org/ipac2021/papers/moxc02.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-MOXC02},
abstract = {{Highly spin polarized electron beams are required for the operation of a wide range of accelerators and instruments. The production of such electrons requires the use of Negative Electron Affinity (NEA) activated GaAs-based cathodes operated in photoelectron guns. Because of their extreme sensitivity to poor vacuum conditions the degradation of the photoemission process is so strong that NEA activated GaAs-based photocathodes can only survive in the extreme vacuums typical of DC gun. State-of-the-art on photocathode technology for spin polarized beam productions are summarized. Recent results on the use of robust NEA coating based on the Cs-Te and Cs-Sb leading to improved operational lifetime of a high spin polarization photocathode are reviewed.}},
}