Overview of the Semiconductor Photocathode Research in China

With the growing demand from scientific projects such as the X-ray free electron laser (XFEL), ultrafast electron diffraction/microscopy (UED/UEM) and electron ion collider (EIC), the semiconductor photocathode, which is a key technique for a high brightness electron source, has been widely studied...

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Autor principal:	Huamu Xie
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	photocathode accelerator electron gun electron source Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/17a33d284fb24e1c9388a2861bc035a1
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id	oai:doaj.org-article:17a33d284fb24e1c9388a2861bc035a1
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spelling	oai:doaj.org-article:17a33d284fb24e1c9388a2861bc035a12021-11-25T18:23:31ZOverview of the Semiconductor Photocathode Research in China10.3390/mi121113762072-666Xhttps://doaj.org/article/17a33d284fb24e1c9388a2861bc035a12021-11-01T00:00:00Zhttps://www.mdpi.com/2072-666X/12/11/1376https://doaj.org/toc/2072-666XWith the growing demand from scientific projects such as the X-ray free electron laser (XFEL), ultrafast electron diffraction/microscopy (UED/UEM) and electron ion collider (EIC), the semiconductor photocathode, which is a key technique for a high brightness electron source, has been widely studied in China. Several fabrication systems have been designed and constructed in different institutes and the vacuum of most systems is in the low 10<sup>−8</sup> Pa level to grow a high QE and long lifetime photocathode. The QE, dark lifetime/bunch lifetime, spectral response and QE map of photocathodes with different kinds of materials, such as bialkali (K<sub>2</sub>CsSb, K<sub>2</sub>NaSb, etc.), Cs<sub>2</sub>Te and GaAs, have been investigated. These photocathodes will be used to deliver electron beams in a high voltage DC gun, a normal conducting RF gun, and an SRF gun. The emission physics of the semiconductor photocathode and intrinsic emittance reduction are also studied.Huamu XieMDPI AGarticlephotocathodeacceleratorelectron gunelectron sourceMechanical engineering and machineryTJ1-1570ENMicromachines, Vol 12, Iss 1376, p 1376 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	photocathode accelerator electron gun electron source Mechanical engineering and machinery TJ1-1570
spellingShingle	photocathode accelerator electron gun electron source Mechanical engineering and machinery TJ1-1570 Huamu Xie Overview of the Semiconductor Photocathode Research in China
description	With the growing demand from scientific projects such as the X-ray free electron laser (XFEL), ultrafast electron diffraction/microscopy (UED/UEM) and electron ion collider (EIC), the semiconductor photocathode, which is a key technique for a high brightness electron source, has been widely studied in China. Several fabrication systems have been designed and constructed in different institutes and the vacuum of most systems is in the low 10<sup>−8</sup> Pa level to grow a high QE and long lifetime photocathode. The QE, dark lifetime/bunch lifetime, spectral response and QE map of photocathodes with different kinds of materials, such as bialkali (K<sub>2</sub>CsSb, K<sub>2</sub>NaSb, etc.), Cs<sub>2</sub>Te and GaAs, have been investigated. These photocathodes will be used to deliver electron beams in a high voltage DC gun, a normal conducting RF gun, and an SRF gun. The emission physics of the semiconductor photocathode and intrinsic emittance reduction are also studied.
format	article
author	Huamu Xie
author_facet	Huamu Xie
author_sort	Huamu Xie
title	Overview of the Semiconductor Photocathode Research in China
title_short	Overview of the Semiconductor Photocathode Research in China
title_full	Overview of the Semiconductor Photocathode Research in China
title_fullStr	Overview of the Semiconductor Photocathode Research in China
title_full_unstemmed	Overview of the Semiconductor Photocathode Research in China
title_sort	overview of the semiconductor photocathode research in china
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/17a33d284fb24e1c9388a2861bc035a1
work_keys_str_mv	AT huamuxie overviewofthesemiconductorphotocathoderesearchinchina
_version_	1718411181425688576

Overview of the Semiconductor Photocathode Research in China

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