A cryogenically cooled 200 kV DC photoemission electron gun for ultralow emittance photocathodes

G Gevorkyan, C Sarabia-Cardenas… - Review of Scientific …, 2023 - pubs.aip.org
Novel photocathode materials like ordered surfaces of single crystal metals, epitaxially
grown high quantum efficiency thin films, and topologically non-trivial materials with dirac …

Investigating Limits of Ultra-low Emittance Photocathodes

GS Gevorkyan - 2023 - search.proquest.com
Producing a brighter electron beams requires the smallest possible emittance from the
cathode with the highest possible current. Several materials like ordered surface, single …

[PDF][PDF] FIRST DEMONSTRATION OF SPIN-POLARIZED ELECTRONS FROM GALLIUM NITRIDE PHOTOCATHODES

SJ Levenson, MB Andorf, IV Bazarov, J Encomendero… - inspirehep.net
For the first time, photoemission of a spin-polarized electron beam from a gallium nitride
(GaN) photocathode is observed and characterized. The spin polarization of the emitted …

[PDF][PDF] CHARACTERIZATION OF VARIOUS GaN SAMPLES FOR PHOTOINJECTORS

SJ Levenson, MB Andorf, IV Bazarov, J Encomendero… - accelconf.web.cern.ch
Photoemission properties (quantum efficiency, spectral response, and lifetime) of various
GaN based photocathodes are summarized, including p-doped samples in its hexagonal …